JP7055086B2 - Triggered liquid ejector - Google Patents

Description

The present invention relates to a trigger type liquid ejector.

Conventionally, for example, the trigger type liquid ejector described in Patent Document 1 is known. The trigger type liquid ejector is attached to a container body containing the content liquid, and has an ejector main body having an ejection cylinder portion through which the content liquid flows, and a nozzle hole is formed and is arranged in front of the ejector main body. It is provided with a nozzle member.
The trigger type liquid ejector atomizes the content liquid into a mist or foam and ejects it from the nozzle hole.

Japanese Unexamined Patent Publication No. 2018-108553

In the conventional trigger type liquid ejector, the liquid adhering to the inner surface of the nozzle hole (spout hole) may be dried and solidified. In this case, the ejection hole may be blocked, the ejection direction of the liquid may be changed, or the mist quality or foam quality of the ejected liquid may be changed.

In view of the above circumstances, one of the objects of the present invention is to provide a trigger type liquid ejector capable of suppressing solidification of the liquid adhering to the inner surface of the ejection hole or the like.

One aspect of the trigger type liquid injector of the present invention is an ejector main body mounted on a container body containing a liquid, and an ejector hole provided in front of the ejector main body to eject the liquid. A nozzle member and a cover member that can open the ejection hole are provided, and the ejector main body extends in the vertical direction to suck up the liquid in the container, and the front of the vertical supply cylinder portion. A trigger mechanism that has a trigger portion that is movably arranged rearward in a forward urged state, and that the liquid is circulated from the inside of the vertical supply cylinder portion toward the ejection hole side by the rearward movement of the trigger portion. The cover member has a closing portion that openably closes the ejection hole, and a hanging portion that extends downward from the closing portion and is arranged in front of the trigger portion and overlaps with the trigger portion when viewed from the front. And a pair of stopper portions that are arranged on both sides of the hanging portion in the left-right direction and are connected to the hanging portion and extend in the front-rear direction, and the stopper portions are elastically deformable to be connected to the hanging portion. A connecting portion, an operating portion arranged in front of the connecting portion, a contact portion arranged behind the connecting portion and located in front of the vertical supply cylinder portion of the ejector main body, and the trigger. When the operating portions of the pair of stopper portions move closer to each other in the left-right direction, the abutting portion and the restricting portion that are inserted between the portions and come into contact with the contact portion and the trigger portion in the front-rear direction are provided. The restricting portions move apart from each other in the left-right direction with each connecting portion as a fulcrum, and the restricting portion is separated from the contact portion and the trigger portion.

In this trigger type liquid ejector, when the closed state of the ejection hole by the cover member is released to open the ejection hole and the trigger portion is moved to the rear, the liquid flows from the inside of the vertical supply cylinder portion toward the ejection hole side. , Is ejected from the ejection hole. After the liquid is ejected, the ejection hole is closed again by the closing portion of the cover member. As a result, even if the liquid adheres to the inner surface of the ejection hole and remains, or adheres to the front end of the nozzle member when the liquid is ejected from the ejection hole, the trigger type liquid ejector is stored. In the meantime, it is possible to prevent the liquid from drying and solidifying. Therefore, it is possible to prevent the ejection holes from being blocked, the direction in which the liquid is ejected, and the mist quality and foam quality of the ejected liquid from being changed.

Since the cover member includes a hanging portion and a stopper portion, it is possible to suppress unintended liquid ejection due to an erroneous operation of the trigger portion. Specifically, since the hanging portion is located in front of the trigger portion, it is possible to prevent the operator's finger or other member from coming into contact with the trigger portion from the front, and the backward movement of the trigger portion is suppressed. To.
Since the restricting portion of the stopper portion is inserted between the abutting portion and the trigger portion in the front-rear direction and abuts against the trigger portion from the rear, the backward movement of the trigger portion is stably suppressed. Since the restricting portion is sandwiched between the abutting portion and the trigger portion in the front-rear direction, it is possible to prevent the regulating portion from being unintentionally separated from the abutting portion and the trigger portion.
When the liquid is ejected, the restricted state of the backward movement of the trigger portion by the restricting portion can be released by a simple operation of pinching and bringing each operating portion of the pair of stopper portions close to each other.

Further, in the trigger type liquid ejector, the cover member includes a rotating portion connected to the nozzle member, the ejection hole opens toward the front, and the closing portion opens the ejection hole forward. It is preferable that when the cover member rotates about the rotating portion, the closing portion opens the ejection hole and the trigger portion is allowed to move backward.

In this case, a simple operation of rotating the cover member around the rotating portion allows the trigger portion to move backward, and the liquid can be ejected from the ejection hole. Further, after the liquid is ejected, the ejection hole can be closed from the front by the closing portion, so that the ejection hole can be closed more reliably. According to the above configuration, it is not necessary to perform a troublesome operation of attaching / detaching the cover member to / from the trigger type liquid ejector before and after ejecting the liquid, and the operability at the time of use is good. In particular, since the closed portion approaches and separates from the ejection hole in the front-rear direction, the operability is further improved.

Further, in the trigger type liquid ejector, the nozzle member includes an ejection cylinder portion in which the ejection hole is formed, and the closing portion includes a closing plate for closing the opening of the ejection cylinder portion and the closing plate. It is preferable to provide a closing cylinder that protrudes from the plate surface of the above-mentioned plate surface and fits on the outside of the ejection cylinder portion.

In this case, the closing plate and the closing cylinder of the closing portion further suppress the drying and solidification of the liquid in the ejection hole.

Further, in the trigger type liquid ejector, the trigger portion is provided with a pair of overcoming portions extending inward in the left-right direction toward the front at both ends in the left-right direction of the trigger portion, and the restricting portion includes the restricting portion. It is preferable that the connecting portion is elastically deformed so that the overcoming portion can be overcome from the front to the rear.

In this case, when the cover member is returned from the state in which the ejection hole is opened to the state in which the ejection hole is closed, each regulating portion of the pair of stopper portions gets over each overcoming portion of the trigger portion toward the rear. That is, when the cover member is returned to the original position (the position where the ejection hole is closed) after the liquid is ejected, it is not necessary to operate each operating portion of the pair of stopper portions, so that the operability is good.

Further, in the trigger type liquid ejector, the trigger mechanism includes a piston that moves in the front-rear direction in conjunction with the trigger portion, a cylinder into which the piston is inserted, and a cylinder in which the inside communicates with the inside of the vertical supply cylinder portion. It is preferable that the contact portion is the front end portion of the cylinder.

In this case, the restricting portion is removably inserted between the cylinder located behind the trigger portion and the trigger portion. According to the above configuration, the stopper portion can function stably while suppressing the increase of the constituent members of the trigger type liquid ejector.

According to the trigger type liquid ejector according to one aspect of the present invention, it is possible to suppress the solidification of the liquid adhering to the inner surface of the ejection hole or the like.

It is a front view which shows the trigger type liquid ejector of one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. It is sectional drawing explaining the closed position and the open position of a cover member. It is a front view of a cover member. It is a VV cross-sectional view of FIG. It is a bottom view of a cover member. FIG. 1 is a cross-sectional view taken along the line VII-VII of FIG. 1 and is a diagram illustrating the function of the stopper portion.

Hereinafter, the trigger type liquid ejector 1 according to the embodiment of the present invention will be described with reference to the drawings.
The trigger type liquid ejector 1 of the present embodiment has a vertical supply cylinder portion 10 for sucking up the liquid in the container body A, and has an ejector main body 2 mounted on the container body A in which the liquid is stored, and the liquid. It includes a nozzle member 5 in which the ejection hole 6 for ejection is formed, a relay member 4 for connecting the ejector main body 2 and the nozzle member 5, and a cover member 7 for opening the ejection hole 6 so as to be open. Unless otherwise specified, each component of the trigger type liquid ejector 1 is a molded product using a synthetic resin.

In FIGS. 1 and 2, in the present embodiment, the direction in which the central axis O1 of the vertical supply cylinder portion 10 extends, that is, the direction along the central axis O1 is referred to as a vertical direction. Of the vertical directions, the direction from the ejector body 2 toward the container body A is called the lower side (lower side), and the direction from the container body A toward the ejector body 2 is called the upper side (upper side).
Of the directions orthogonal to the central axis O1 when viewed from the vertical direction, the direction connecting the vertical supply cylinder portion 10 and the nozzle member 5 is referred to as a front-rear direction. Of the front-rear directions, the direction from the vertical supply cylinder portion 10 toward the nozzle member 5 is referred to as the front side (front side), and the direction from the nozzle member 5 toward the vertical supply cylinder portion 10 is referred to as the rear side (rear side).
Of the directions orthogonal to the central axis O1 when viewed from the vertical direction, the direction orthogonal to the front-rear direction is called the left-right direction. Of the left-right directions, the direction approaching the central axis O1 is referred to as the inner side (center side) in the left-right direction, and the direction away from the central axis O1 is referred to as the outer side (end side) in the left-right direction.

The ejector main body 2 is arranged in front of the vertical supply cylinder portion 10 extending in the vertical direction and the vertical supply cylinder portion 10, and the liquid in the vertical supply cylinder portion 10 is circulated toward the ejection hole 6 side. 11, a trigger mechanism T having a trigger portion 51 arranged in front of the vertical supply cylinder portion 10 so as to be movable rearward in a forward urged state, a vertical supply cylinder portion 10, an injection cylinder portion 11, and a cylinder 53 described later. A cover body 55 that integrally covers the above, rear, and left-right directions, and a contact portion 56 that is located in front of the vertical supply cylinder portion 10 of the ejector main body 2 are provided.

The vertical supply cylinder portion 10 includes a topped cylinder-shaped outer cylinder 12 and an inner cylinder 13 fitted in the outer cylinder 12.
The outer cylinder 12 has a large diameter portion 12a, a small diameter portion 12b arranged above the large diameter portion 12a and having an inner diameter and an outer diameter smaller than that of the large diameter portion 12a, and an upper end portion and a small diameter portion 12b of the large diameter portion 12a. A flange portion 12c for connecting the lower end portion is provided. The upper end opening of the small diameter portion 12b is closed by the top wall portion 12d.
The inner cylinder 13 has a large diameter portion 13a, a small diameter portion 13b arranged above the large diameter portion 13a and having an inner diameter and an outer diameter smaller than that of the large diameter portion 13a, and an upper end portion and a small diameter portion 13b of the large diameter portion 13a. A flange portion 13c for connecting the lower end portion is provided.

In the small diameter portion 13b of the inner cylinder 13, the upper portion of the pipe 15 arranged in the container body A and in which the lower end opening is located at the bottom portion of the container body A (not shown) is fitted. The flange portion 13c of the inner cylinder 13 is located below the flange portion 12c of the outer cylinder 12. A gap S1 is provided between the flange portion 13c of the inner cylinder 13 and the flange portion 12c of the outer cylinder 12.

In the large-diameter portion 13a of the inner cylinder 13, an annular flange portion 13d protruding outward in the radial direction is formed in a portion protruding downward from the large-diameter portion 12a of the outer cylinder 12. The flange portion 13d is disposed in the upper end portion of the mounting cap 3 mounted (for example, screwed) on the mouth portion A1 of the container body A, and rotatably locks the upper end portion of the mounting cap 3 around its axis. The flange portion 13d is sandwiched in the vertical direction by the mounting cap 3 and the upper end opening edge of the mouth portion A1 of the container body A.
The central axis O1 of the vertical supply cylinder portion 10 composed of the outer cylinder 12 and the inner cylinder 13 is located rearward with respect to the container axis of the container body A which is coaxial with the central axis of the mouth portion A1.

A discharge valve 30 formed so as to be elastically deformable in the vertical direction is arranged in the upper end portion of the inner cylinder 13.
The discharge valve 30 is fitted in the inner cylinder 13 and is arranged below the base portion 31 and the base portion 31 that abuts on the lower surface of the top wall portion 12d of the outer cylinder 12, and has a step on the inner peripheral surface of the inner cylinder 13. A valve body 33 that comes into contact with the valve seat 32 formed in a shape from above, and a hollow spring portion 34 that vertically connects the base portion 31 and the valve body 33 are provided.

The valve body 33 is pressed from above by the hollow spring portion 34, and is in close contact with the valve seat 32. The valve body 33 blocks communication between the space above the valve seat 32 and the space below the valve seat 32 in the inner cylinder 13. The valve body 33 rises against the urging force of the hollow spring portion 34 and separates from the valve seat 32 so that the space located above the valve seat 32 in the inner cylinder 13 and the valve seat 32 It communicates with the space located below.

An annular tapered cylinder portion 35 protruding inward is formed on a portion of the inner peripheral surface of the inner cylinder 13 located below the valve seat 32 and above the upper end of the pipe 15. There is. The diameter of the tapered cylinder portion 35 is reduced toward the bottom. Inside the tapered cylinder portion 35, a ball valve 36 that is seated on the inner peripheral surface of the tapered cylinder portion 35 so as to be separable is arranged.
The ball valve 36 blocks communication between the space located above the tapered cylinder portion 35 and the space located below the tapered cylinder portion 35 in the inner cylinder 13. The ball valve 36 rises and separates from the inner peripheral surface of the tapered cylinder portion 35, so that the space is located above the tapered cylinder portion 35 and below the tapered cylinder portion 35 in the inner cylinder 13. Communicate with the space to be used.

The injection cylinder portion 11 extends in the front-rear direction, and the rear end portion is connected to the front side portion of the upper end portion of the vertical supply cylinder portion 10. The inside of the injection cylinder portion 11 communicates with the inside of the vertical supply cylinder portion 10 through the outer discharge hole 16 formed in the outer cylinder 12 and the inner discharge hole 17 formed in the inner cylinder 13. The inner discharge hole 17 opens in the inner cylinder 13 in a space located above the valve seat 32.

A cylinder mounting cylinder 40 projecting forward from the outer peripheral surface of the outer cylinder 12 is formed in a portion of the outer cylinder 12 located below the injection cylinder portion 11. That is, the vertical supply cylinder portion 10 includes a cylinder mounting cylinder 40. The cylinder mounting cylinder 40 extends in the front-rear direction. The cylinder mounting cylinder 40 has a bottomed cylinder shape that opens toward the front and the rear end is closed. A cylinder 53, which will be described later, is fitted inside the cylinder mounting cylinder 40. The lower end of the cylinder mounting cylinder 40 is integrally formed with the flange portion 12c of the outer cylinder 12.

The trigger mechanism T circulates the liquid from the inside of the vertical supply cylinder portion 10 through the inside of the injection cylinder portion 11 toward the ejection hole 6 side by moving the trigger portion 51 to the rear. The trigger mechanism T includes a trigger portion 51 arranged in front of the vertical supply cylinder portion 10 so as to be movable rearward in a forward urged state, a piston 52 that moves in the front-rear direction in conjunction with the trigger portion 51, and a piston 52. The cylinder 53 is provided, and the inside thereof communicates with the inside of the vertical supply cylinder portion 10.

The cylinder 53 has an outer cylinder portion 60 that is fitted in the cylinder mounting cylinder 40 and opens toward the front, a rear wall portion 61 that closes the rear end opening of the outer cylinder portion 60, and a central portion of the rear wall portion 61. It is provided with a ridged cylindrical piston guide 62 that protrudes forward from the piston and has a front end closed.
The outer cylinder portion 60, the piston guide 62, and the cylinder mounting cylinder 40 are arranged coaxially with the cylinder shaft O2 extending in the front-rear direction.

The inside of the piston guide 62 is opened rearward, and a protrusion protruding forward from the rear wall of the cylinder mounting cylinder 40 (small diameter portion 12b of the outer cylinder 12) is fitted in the opening.
The outer peripheral surface of the outer cylinder portion 60 and the inner peripheral surface of the cylinder mounting cylinder 40 are in close contact with each other at both ends in the front-rear direction. An annular gap S2 is provided in an intermediate portion between the outer peripheral surface of the outer cylinder portion 60 and the inner peripheral surface of the cylinder mounting cylinder 40, which is located between both ends in the front-rear direction.

The outer cylinder portion 60 is formed with a first ventilation hole 63 that communicates the inside of the outer cylinder portion 60 with the gap S2. A second ventilation hole 64 is formed in the flange portion 12c of the outer cylinder 12 to communicate the gap S2 and the gap S1 between the flange portion 12c of the outer cylinder 12 and the flange portion 13c of the inner cylinder 13. A third ventilation hole 65 that communicates the gap S1 with the large diameter portion 13a of the inner cylinder 13 and the inside of the mounting cap 3 is formed in the flange portion 13c of the inner cylinder 13.

The rear wall portion 61 of the cylinder 53 is formed with a cylinder portion 66 that projects rearward and opens in the front-rear direction. The tubular portion 66 is formed in a portion of the rear wall portion 61 located above the piston guide 62. The cylinder portion 66 is fitted into a through hole formed in the rear wall of the cylinder mounting cylinder 40 (small diameter portion 12b of the outer cylinder 12).
A second through hole 67 communicating with the inside of the cylinder portion 66 is formed in the small diameter portion 13b of the inner cylinder 13. The second through hole 67 opens in the inner cylinder 13 in a space located below the valve seat 32 and above the tapered cylinder portion 35.

The inside of the cylinder 53 and the inside of the vertical supply cylinder portion 10 communicate with each other through the inside of the cylinder portion 66 and the second through hole 67. Further, the discharge valve 30 switches the communication between the inside of the injection cylinder portion 11 and the inside of the cylinder 53 and the cutoff thereof, and the ball valve 36 switches the communication between the inside of the container body A and the inside of the cylinder 53 and the cutoff thereof.

The front end portion of the cylinder 53 projects forward from the front end opening of the cylinder mounting cylinder 40. The outer peripheral portion of the front end portion of the cylinder 53 abuts from the front with respect to the front end of the peripheral wall of the cylinder mounting cylinder 40. In the cylinder 53, the upper end portion of the outer peripheral portion of the front end portion of the cylinder 53 protrudes upward from the portion other than the upper end portion. The cylinder 53 includes a mounting protrusion 53a extending rearward from the upper end portion. A gap is provided between the mounting protrusion 53a and the outer peripheral surface of the outer cylinder portion 60. The mounting protrusion 53a is formed in a plate shape in which a pair of plate surfaces (front and back surfaces) face in the vertical direction. At the center of the mounting protrusion 53a in the left-right direction, a slit that penetrates the mounting protrusion 53a in the vertical direction and extends in the front-rear direction and opens rearward is formed. An insertion plate 115 that connects the upper end portion of the cylinder mounting cylinder 40 and the lower end portion at the rear portion of the injection cylinder portion 11 and has a pair of plate surfaces facing in the left-right direction is inserted into this slit.

The piston 52 includes a cylindrical trigger connecting portion 70 connected to the trigger portion 51, and a piston cylinder 71 located behind the trigger connecting portion 70 and having a diameter larger than that of the trigger connecting portion 70. It is formed in the shape of a cylinder that opens rearward. The piston 52 is arranged coaxially with the cylinder shaft O2.

The piston cylinder 71 is an outer cylinder that opens rearward and protrudes outward in the radial direction from the piston main body 72 into which the piston guide 62 is inserted and the rear end of the piston main body 72. A sliding cylinder portion 73 that is in close sliding contact with the inner peripheral surface of the portion 60 is provided.
The inner diameter of the piston body 72 is larger than the outer diameter of the piston guide 62. A gap is provided between the inner peripheral surface of the piston body 72 and the outer peripheral surface of the piston guide 62.
The diameter of the sliding cylinder portion 73 increases from the central portion in the front-rear direction of the sliding cylinder portion 73 toward the front and the rear. A pair of lip portions located at both ends of the sliding cylinder portion 73 in the front-rear direction slide with respect to the inner peripheral surface of the outer cylinder portion 60.

The trigger connecting portion 70 of the piston 52 is connected to the trigger portion 51 via a connecting shaft 86 described later. As a result, the piston 52 is urged forward together with the trigger portion 51 by the elastic plate portion 54 described later, and moves rearward as the trigger portion 51 moves rearward and is pushed into the cylinder 53.

When the trigger portion 51 is located at the frontmost moving position (frontmost end position), the sliding cylinder portion 73 of the piston 52 closes the first ventilation hole 63. Then, when the piston 52 moves backward by a predetermined amount due to the backward movement of the trigger portion 51, the sliding cylinder portion 73 opens the first ventilation hole 63. As a result, the inside of the container body A communicates with the outside through the third ventilation hole 65, the gap S1, the second ventilation hole 64, the gap S2, and the first ventilation hole 63.

The trigger portion 51 includes a main plate portion 80 in which a pair of plate surfaces face in the front-rear direction, a pair of side plate portions 81 projecting rearward from both ends of the main plate portion 80 in the left-right direction, and a pair of lower end portions and a pair of main plate portions 80. A lower plate portion 87, which is connected to the lower end portion of the side plate portion 81 of the above, is provided.
Of the pair of plate surfaces of the main plate portion 80, the front surface of the main plate portion 80 is concavely curved toward the rear when viewed from the left and right directions. In the main plate portion 80, the rear surface of the pair of plate surfaces of the main plate portion 80 is curved in a convex shape toward the rear when viewed from the left-right direction.

At the upper ends of the pair of side plate portions 81, a pair of connecting plates 82 extending upward and sandwiching the injection cylinder portion 11 in the left-right direction are formed. Each of the pair of connecting plates 82 is separately provided with a rotating shaft portion 83 projecting outward in the left-right direction. The rotary shaft portion 83 is rotatably supported by a bearing portion provided on the upper plate member 84 that covers the upper part of the injection cylinder portion 11. As a result, the trigger portion 51 can swing in the front-rear direction by rotating around the rotation shaft portion 83.

A connecting cylinder 85 extending rearward is formed at the upper end portion of the main plate portion 80. A pair of connecting shafts 86 protruding in the left-right direction toward the inside of the connecting cylinder 85 are formed at the rear portion of the inner peripheral surface of the connecting cylinder 85. The connecting shaft 86 is inserted into a connecting hole formed in the trigger connecting portion 70 of the piston 52. As a result, the trigger portion 51 and the piston 52 are connected to each other.
The trigger connecting portion 70 of the piston 52 is rotatably connected to the connecting shaft 86 around the axis thereof, and is movably connected to the connecting shaft 86 by a predetermined amount in the vertical direction.

On the upper surface of the injection cylinder portion 11, the horizontal plate-shaped upper plate member 84 connected to the top wall portion 12d of the outer cylinder 12 of the vertical supply cylinder portion 10 is attached.
The upper plate member 84 has an arc shape that is convex forward when viewed from the left and right directions at both ends of the upper plate member 84 in the left-right direction, and is an elastic plate that can be elastically deformed and extends to the lower side of the injection cylinder portion 11. It has a part 54. The elastic plate portion 54 has an arcuate shape concentric with each other when viewed from the left and right directions, and includes a pair of leaf springs arranged in the front-rear direction. The pair of leaf springs are formed by being curved in an arc shape that is convex forward, respectively, when viewed from the left and right directions.

The elastic plate portion 54 has a folded portion that connects the lower ends of each of the pair of leaf springs and forms an arc shape that is convex downward when viewed from the left and right sides. The elastic plate portion 54 has a locking piece 54d that projects downward from the folded portion. The locking piece 54d is inserted from above into the pocket portion 81a formed in the side plate portion 81 of the trigger portion 51.
As a result, the elastic plate portion 54 urges the trigger portion 51 forward via the locking piece 54d and the pocket portion 81a.

In the present embodiment, a pair of pocket portions 81a are provided at both ends of the trigger portion 51 in the left-right direction. The pocket portion 81a is formed so as to project outward from the side plate portion 81 in the left-right direction. The pocket portion 81a is arranged in the upper portion of the side plate portion 81, that is, the portion of the trigger portion 51 on the rotation shaft portion 83 side (root side).

The upper end portion of the main plate portion 80 of the trigger portion 51 is in contact with the lower end portion of the partition wall 90 in the relay member 4, which will be described later, from below and behind by the urging by the elastic plate portion 54. As a result, the trigger portion 51 is positioned at the most forward moving position.
When the trigger portion 51 is pulled backward and moves from the foremost moving position, the locking piece 54d moves backward and the elastic plate portion 54 is elastically deformed. At this time, the locking piece 54d rises with respect to the pocket portion 81a while maintaining the engaged state with the pocket portion 81a.

As shown in FIG. 7, the trigger portion 51 includes a pair of overcoming portions 81b extending inward in the left-right direction toward the front at both ends of the trigger portion 51 in the left-right direction. In the present embodiment, the pair of overcoming portions 81b are arranged in the pair of pocket portions 81a of the trigger portion 51, respectively. The overcoming portion 81b is located at the front end portion of the pocket portion 81a, and in the example of the present embodiment, it has a curved surface shape that is convex outward and forward in the left-right direction. Specifically, in a cross-sectional view perpendicular to the central axis O1 shown in FIG. 7, the overcoming portion 81b has a convex curve shape extending inward in the left-right direction toward the front.

As shown in FIG. 2, in the example of the present embodiment, the contact portion 56 is the front end portion of the cylinder 53. The contact portion 56 is a front surface facing forward at the front end portion of the cylinder 53. In the example of this embodiment, the contact portion 56 is an annular shape extending around the cylinder shaft O2. The contact portion 56 has a planar shape perpendicular to the cylinder shaft O2. A predetermined distance is provided between the contact portion 56 and the trigger portion 51 in the front-rear direction.

The relay member 4 is arranged in front of the ejector main body 2. The relay member 4 is attached to the injection cylinder portion 11 and projects forward from the ejector main body 2. The relay member 4 has a partition wall 90 that covers the front end opening of the injection cylinder portion 11 from the front, an outer fitting cylinder portion 91 that extends rearward from the partition wall 90 and is externally fitted to the injection cylinder portion 11, and a partition wall 90 forward. It includes a first mounting cylinder portion 92 extending toward the surface and mounting the nozzle member 5, and a guide shaft portion 94 extending forward from a portion of the partition wall 90 located inside the first mounting cylinder portion 92. ..

The front-rear position of the front surface of the partition wall 90 and the front-rear position of the front end edge of the cover body 55 are the same as each other. The first mounting cylinder portion 92 and the guide shaft portion 94 are arranged coaxially with the nozzle shaft O3 extending in the front-rear direction. The nozzle shaft O3 is located below the central axis of the injection cylinder portion 11.
In the present embodiment, the direction orthogonal to the nozzle axis O3 when viewed from the front-rear direction is referred to as the nozzle radial direction. Of the nozzle radial directions, the direction approaching the nozzle shaft O3 is referred to as the inner side in the nozzle radial direction, and the direction away from the nozzle shaft O3 is referred to as the outer side in the nozzle radial direction. The direction that orbits around the nozzle axis O3 is called the nozzle circumferential direction.

The guide shaft portion 94 is formed in a ridged cylinder shape in which the front end portion is closed and the guide shaft portion 94 is opened rearward. The guide shaft portion 94 is formed so as to fit inside the first mounting cylinder portion 92 without protruding forward from the first mounting cylinder portion 92.
The shape of the guide shaft portion 94 is not limited to the example of the present embodiment, and may be formed into, for example, a solid columnar shape.

A communication hole 95 communicating with the inside of the injection cylinder portion 11 is formed in a portion of the partition wall 90 located above the guide shaft portion 94 and located inside the first mounting cylinder portion 92. As a result, the annular space 96 defined between the guide shaft portion 94 and the first mounting cylinder portion 92 communicates with the inside of the injection cylinder portion 11 through the communication hole 95.

The nozzle member 5 is provided in front of the ejector main body 2. The nozzle member 5 is mounted on the first mounting cylinder portion 92 and projects forward from the relay member 4. The nozzle member 5 is connected to the ejector main body 2 via the relay member 4.

The nozzle member 5 extends rearward from the nozzle wall portion 100 that covers the front end opening of the first mounting cylinder portion 92 from the front and the nozzle wall portion 100, and is prevented from coming off forward with respect to the first mounting cylinder portion 92. The second mounting cylinder portion 101 externally fitted in the state, extends rearward from the nozzle wall portion 100, is arranged inside the second mounting cylinder portion 101 in the nozzle radial direction, and the guide shaft portion 94 is inserted inside. The guide cylinder portion 102, the exterior cylinder portion 103 which is arranged outside the nozzle radial direction of the second mounting cylinder portion 101 and surrounds the second mounting cylinder portion 101 from the outside over the entire circumference in the nozzle circumferential direction, and the nozzle wall portion 100. A support cylinder 105 that extends rearward from the surface, is arranged inside the nozzle radial of the second mounting cylinder 101 and outside the nozzle radial of the guide cylinder 102, and is fitted inside the first mounting cylinder 92. , A nozzle plug portion 109 that protrudes forward from the nozzle wall portion 100 and has an ejection hole 6 formed therein, a nozzle plug portion 109 fitted in the ejection cylinder portion 108, and a front end portion of the nozzle member 5. A rotation support portion 110 located above the ejection cylinder portion 108, and a cover support surface 111 located behind the rotation support portion 110, extending upward toward the rear and facing forward and upward. Be prepared.

The nozzle wall portion 100 has a plate shape in which a pair of plate surfaces face in the front-rear direction. The front end of the first mounting cylinder portion 92 is in contact with the rear surface of the pair of plate surfaces of the nozzle wall portion 100 facing rearward. In the example of the present embodiment, the position of the rear surface of the nozzle wall portion 100 in the front-rear direction is ahead of the position of the front end surface of the guide shaft portion 94 in the front-rear direction. A through hole that penetrates the nozzle wall portion 100 in the front-rear direction is formed in a portion of the nozzle wall portion 100 located on the nozzle shaft O3. By forming a through hole in the nozzle wall portion 100, the inside of the guide cylinder portion 102 and the inside of the ejection cylinder portion 108 communicate with each other.

The rear end opening edge of the second mounting cylinder portion 101 faces the front surface of the partition wall 90 with a gap.
The guide cylinder portion 102 is arranged in the annular space 96. The guide cylinder portion 102 is arranged inside the first mounting cylinder portion 92 in the nozzle radial direction with a gap between the guide cylinder portion 102 and the first mounting cylinder portion 92. The guide cylinder portion 102 is arranged outside the guide shaft portion 94 in the nozzle radial direction with a gap between the guide shaft portion 94 and the guide shaft portion 94.
The outer cylinder portion 103 extends in the front-rear direction. In the example of this embodiment, the outer cylinder portion 103 has a substantially triangular tubular shape. The diameter of the outer cylinder portion 103 slightly increases toward the rear.

The ejection cylinder portion 108 extends in the front-rear direction. The inside of the ejection cylinder portion 108 opens toward the front. The ejection cylinder portion 108 has a plurality of locking protrusions 108a. The plurality of locking protrusions 108a project inward in the nozzle radial direction from the inner peripheral surface of the ejection cylinder portion 108, and are arranged at intervals in the nozzle peripheral direction from each other. Of the inner peripheral surface of the ejection cylinder portion 108, the portion located in front of the locking protrusion 108a extends outward in the nozzle radial direction toward the front. That is, the inner diameter of the ejection cylinder portion 108 increases toward the front in the portion located in front of the locking protrusion 108a. Of the inner peripheral surface of the ejection cylinder portion 108, the portion located behind the locking protrusion 108a is the inner side in the nozzle radial direction from the portion connected to the front end of the inner peripheral surface of the guide cylinder portion 102 toward the front. Extend towards. That is, the inner diameter of the ejection cylinder portion 108 is reduced toward the front in the portion located behind the locking protrusion 108a.
In the example of the present embodiment, the outer diameter of the ejection cylinder portion 108 is substantially constant along the front-rear direction.

The nozzle plug portion 109 has a locking groove 109a and a plurality of ejection grooves 109b.
The locking groove 109a is arranged on the outer peripheral surface of the nozzle plug portion 109. The locking groove 109a is recessed inward in the nozzle radial direction on the outer peripheral surface of the nozzle plug portion 109 and extends over the entire circumference in the nozzle circumferential direction. Inside the locking groove 109a, inner end portions of a plurality of locking protrusions 108a in the nozzle radial direction are inserted. That is, a plurality of locking protrusions 108a are locked in the locking groove 109a, whereby the nozzle plug portion 109 is prevented from coming off in the front-rear direction with respect to the ejection cylinder portion 108 (movement in the front-rear direction is restricted). Has been done.

The portion of the nozzle plug portion 109 located in front of the locking groove 109a is fitted in the ejection cylinder portion 108. The outer diameter of the portion of the nozzle plug portion 109 located in front of the locking groove 109a increases toward the front. The front end surface of the nozzle plug portion 109 facing forward is a flat surface perpendicular to the nozzle shaft O3. In the example of the present embodiment, the position of the front end surface of the nozzle plug portion 109 in the front-rear direction is the same as the position of the front end opening edge of the ejection cylinder portion 108 in the front-rear direction (that is, flush with each other).

The plurality of ejection grooves 109b are arranged on the outer peripheral surface of the nozzle plug portion 109 located in front of the locking groove 109a. The plurality of ejection grooves 109b extend in the front-rear direction and are arranged at intervals in the circumferential direction of the nozzle. The rear end of the ejection groove 109b opens into the locking groove 109a. The front end portion of the ejection groove 109b opens to the front end surface of the nozzle plug portion 109. The outer opening of the ejection groove 109b in the nozzle radial direction is closed by the inner peripheral surface of the ejection cylinder portion 108.

The space defined by the ejection groove 109b and the inner peripheral surface of the ejection cylinder portion 108 is defined as the ejection hole 6. The ejection hole 6 opens toward the front. A plurality of ejection holes 6 are formed in the ejection cylinder portion 108 at intervals in the circumferential direction of the nozzle. The ejection hole 6 extends outward in the radial direction of the nozzle toward the front.
The ejection hole 6 communicates with each other in the ejection cylinder portion 11 through the annular space 96 and the communication hole 95 between the locking protrusions 108a adjacent to each other in the peripheral direction of the nozzle.

The rotation support portion 110 is connected to the rotation portion 24 described later of the cover member 7. The rotation support portion 110 has a pair of rotation support holes extending in the left-right direction. The pair of rotation support holes are arranged apart from each other in the left-right direction, and each opens inward in the left-right direction.
The cover support surface 111 supports the closing portion 21 of the cover member 7, which will be described later. The front surface of the closed portion 21 of the cover member 7 in the open position comes into contact with the cover support surface 111. The cover support surface 111 is, for example, flat.

As shown in FIG. 3, the cover member 7 closes the ejection hole 6 and restricts the backward movement of the trigger portion 51, and opens the ejection hole 6 and allows the trigger portion 51 to move backward. It is movable between the open position and. In FIG. 3, the cover member 7 arranged at the closed position is shown by a solid line and a broken line, and the cover member 7 arranged at the open position is shown by a two-dot chain line. The cover member 7 moves between the closed position and the open position by rotating around the rotating portion 24.
In the example of this embodiment, the cover member 7 is integrally formed by a single member.

As shown in FIGS. 1 to 7, the cover member 7 includes a closing portion 21, a hanging portion 22, a pair of stopper portions 23, and a rotating portion 24.
The closing portion 21 closes the ejection hole 6 so as to be openable. In the present embodiment, the closing portion 21 closes the ejection hole 6 so as to be open from the front. The closing portion 21 includes a closing plate 21a, a closing cylinder 21b, and a lower plate 21c.

The block plate 21a has a plate shape in which a pair of plate surfaces face in the front-rear direction. The closing plate 21a closes the opening of the ejection cylinder portion 108. Of the pair of plate surfaces of the block plate 21a, the rear surface facing the rear abuts from the front or faces the front end opening of the ejection cylinder portion 108 with a gap. The rear surface of the closing plate 21a abuts from the front with respect to the front end surface of the nozzle plug portion 109, or faces the front end surface with a gap.
The obstruction cylinder 21b protrudes from the plate surface of the obstruction plate 21a and fits on the outside of the ejection cylinder portion 108. Specifically, the obstruction cylinder 21b protrudes rearward from the rear surface of the obstruction plate 21a and is externally fitted to the outside of the ejection cylinder portion 108 in the nozzle radial direction.

The lower plate 21c projects rearward from the lower part of the closing plate 21a. The lower plate 21c is substantially V-shaped in a cross-sectional view perpendicular to the nozzle shaft O3. The central portion of the lower plate 21c in the left-right direction is located at the lowermost position, and the lower plate 21c extends upward from the central portion toward the outside in the left-right direction. The lower plate 21c covers the lower part of the outer cylinder portion 103 from below.

The hanging portion 22 extends downward from the closing portion 21, is arranged in front of the trigger portion 51, and overlaps with the trigger portion 51 when viewed from the front. The hanging portion 22 is hung downward from the rear end portion of the lower plate 21c. The hanging portion 22 is located behind the obstruction plate 21a. In the present embodiment, the hanging portion 22 covers the main plate portion 80 of the trigger portion 51 from the front. The hanging portion 22 includes a front cover plate 22a and a pair of side cover plates 22b.

The front cover plate 22a overlaps with the trigger portion 51 when viewed from the front, and the pair of plate surfaces face in the front-rear direction. The front surface of the pair of plate surfaces of the front cover plate 22a is concavely curved toward the rear when viewed from the left-right direction. In the front cover plate 22a, the rear surface of the pair of plate surfaces of the front cover plate 22a is curved in a convex shape toward the rear when viewed from the left-right direction. The rear surface of the front cover plate 22a and the front surface of the main plate portion 80 are arranged so as to face each other with a substantially constant gap. The front cover plate 22a covers the main plate portion 80 from the front.

The pair of side cover plates 22b project rearward from both ends of the front cover plate 22a in the left-right direction. The pair of side cover plates 22b are arranged on both sides of the trigger portion 51 in the left-right direction and overlap with the trigger portion 51 when viewed from the left-right direction. The side cover plate 22b is arranged so as to overlap the front end portions of the main plate portion 80 and the side plate portion 81 when viewed from the left and right directions. In the illustrated example, the length of the side cover plate 22b in the front-rear direction increases from the lower end portion of the side cover plate 22b toward the upper side.

The pair of stopper portions 23 are arranged on both sides of the hanging portion 22 in the left-right direction, are connected to the hanging portion 22, and extend in the front-rear direction. The stopper portion 23 is connected to the upper portion of the hanging portion 22. The stopper portion 23 is located in front of the vertical supply cylinder portion 10 and the cylinder 53, and is located below the injection cylinder portion 11, the relay member 4, and the nozzle member 5. The stopper portion 23 overlaps with the contact portion 56 (front end portion of the cylinder 53) when viewed from the front. In the present embodiment, the stopper portion 23 is arranged inside the cover body 55 in the left-right direction (see FIG. 1).

The stopper portion 23 includes a connecting portion 23a, an operating portion 23b, a stopper arm 23c, and a regulating portion 23d.
The connecting portion 23a is connected to the hanging portion 22 and is elastically deformable. In the present embodiment, the connecting portion 23a is located at the rear end portion of the operating portion 23b and is connected to the side cover plate 22b of the hanging portion 22. A plurality of connecting portions 23a are provided on the stopper portion 23. The plurality of connecting portions 23a are arranged apart from each other in the vertical direction. In the present embodiment, a pair of connecting portions 23a are provided on the surface of the operating portion 23b facing inward in the left-right direction at intervals in the vertical direction.

The operation unit 23b is arranged in front of the connecting unit 23a. The vertical length of the operating portion 23b is longer than the vertical length of the stopper arm 23c and the vertical length of the restricting portion 23d. The operation unit 23b has the largest length in the vertical direction in the stopper unit 23. The front end portion of the operating portion 23b is located behind the closing plate 21a. In the present embodiment, the position of the front end portion of the operation unit 23b in the front-rear direction is rearward of the position of the front end portion of the nozzle member 5 in the front-rear direction. Specifically, the front end portion of the operation portion 23b is located behind the front end portion of the ejection cylinder portion 108 and the front end portion of the nozzle plug portion 109.

The operation unit 23b includes an operation plate unit 23e and a protrusion 23f.
The operation plate portion 23e is arranged in front of the connecting portion 23a, and has a plate shape in which a pair of plate surfaces face in the left-right direction. In the present embodiment, the operation plate portion 23e has a substantially quadrangular plate shape.
The protrusion 23f projects outward in the left-right direction from the front end of the operation plate 23e. In the example of the present embodiment, the protrusion 23f is rib-shaped, is arranged at the front end of the operation plate 23e, and extends in the vertical direction.

The stopper arm 23c has a plate shape in which a pair of plate surfaces face in the left-right direction, and extends in the front-rear direction. The stopper arm 23c extends rearward from the rear end portion of the operating portion 23b. The stopper arm 23c projects rearward from the rear end portion of the operation plate portion 23e, which is located between the pair of connecting portions 23a in the vertical direction. In the example of the present embodiment, the stopper arm 23c is located below the cylinder shaft O2 and above the lower end of the cylinder 53.

The regulating portion 23d is arranged behind the connecting portion 23a. The restricting portion 23d is arranged at the rear portion of the stopper arm 23c and projects inward in the left-right direction from the stopper arm 23c. The regulation unit 23d extends in the front-rear direction. The regulating portion 23d has a substantially square shape when viewed from the left-right direction. The vertical position of the upper end surface of the restricting portion 23d is the same as the vertical position of the upper end surface of the stopper arm 23c. The vertical position of the lower end surface of the restricting portion 23d is the same as the vertical position of the lower end surface of the stopper arm 23c. Therefore, in the present embodiment, the regulating portion 23d is also located below the cylinder shaft O2 and above the lower end portion of the cylinder 53.

The position of the rear end surface of the restricting portion 23d in the front-rear direction is the same as the position of the rear end surface of the stopper arm 23c in the front-rear direction. As shown in FIG. 7, of the rear end portions of the restricting portion 23d, the inner end portion in the left-right direction has a curved surface shape that is convex inward and rearward in the left-right direction. Specifically, in a cross-sectional view perpendicular to the central axis O1 shown in FIG. 7, the inner end portion in the left-right direction at the rear end portion of the restricting portion 23d has a convex curve shape extending forward toward the inside in the left-right direction. Is. The portion of the rear end surface of the restricting portion 23d other than the inner end portion in the left-right direction is a flat surface perpendicular to the cylinder shaft O2. The front end surface of the restricting portion 23d is a flat surface that inclines and extends rearward as it goes upward. The restricting portion 23d is arranged so as to overlap the trigger portion 51 and the contact portion 56 when viewed from the front-rear direction. Specifically, the restricting portion 23d is arranged so as to overlap the pocket portion 81a of the side plate portion 81 and the front end portion of the cylinder 53 when viewed from the front-rear direction.

As shown in FIGS. 2 and 7, the restricting portion 23d is inserted between the abutting portion 56 and the trigger portion 51, and abuts on the abutting portion 56 and the trigger portion 51 in the front-rear direction. The restricting portion 23d is sandwiched by the contact portion 56 and the trigger portion 51 from the front-rear direction. In the present embodiment, the rear end portion of the restricting portion 23d abuts from the front to the abutting portion 56 facing forward at the front end portion of the cylinder 53. The front end portion of the restricting portion 23d abuts from the rear with respect to the pocket portion 81a of the side plate portion 81 of the trigger portion 51.

As shown in FIG. 7, when the operating portions 23b of the pair of stopper portions 23 move closer to each other in the left-right direction from the state where the cover member 7 is arranged at the closed position, each regulation is performed with each connecting portion 23a as a fulcrum. The portions 23d move apart from each other in the left-right direction, and the restricting portion 23d separates from the contact portion 56 and the trigger portion 51. This makes it possible to move the cover member 7 to the open position.

As shown in FIGS. 1 to 5, the rotating portion 24 is arranged at the upper end portion of the cover member 7. A pair of rotating portions 24 are provided on the upper end portion of the closed portion 21 at intervals in the left-right direction. The rotating portion 24 has a shaft shape that protrudes in the left-right direction from the upper end portion of the closing portion 21. The pair of rotating portions 24 project outward in the left-right direction at the upper end portion of the closing plate 21a. The pair of rotating portions 24 are each inserted into the pair of rotating support holes of the rotating support portion 110. As a result, the rotating portion 24 is connected to the nozzle member 5. By connecting the rotating portion 24 to the nozzle member 5, the cover member 7 can rotate between the closed position and the open position around the rotating portion 24.

As shown in FIG. 3, when the cover member 7 rotates about the rotating portion 24 from the state where the cover member 7 is arranged at the closed position, the closing portion 21 opens the ejection hole 6 and the ejection hole 6 is opened. The rearward movement of the trigger portion 51 is allowed. That is, in the state where the cover member 7 is arranged in the open position, the trigger portion 51 can move backward and can eject the liquid from the ejection hole 6.

Next, the operation of the trigger type liquid ejector 1 configured as described above will be described.
It is assumed that the liquid is filled in each part of the trigger type liquid ejector 1 by a plurality of operations of the trigger part 51.

First, the cover member 7 is moved from the closed position to the open position so that the front surface of the closed plate 21a of the cover member 7 comes into contact with the cover support surface 111 of the nozzle member 5. By arranging the cover member 7 in the open position, the front opening of the ejection hole 6 is exposed.

Then, when the trigger portion 51 is pulled backward against the urging force of the elastic plate portion 54, the piston 52 retracts with the backward movement of the trigger portion 51, and the liquid in the cylinder 53 flows inside the cylinder portion 66 and in the cylinder portion 66. It is introduced into the inner cylinder 13 of the vertical supply cylinder portion 10 through the second through hole 67. The liquid introduced into the inner cylinder 13 pushes down the ball valve 36 to close the valve, and pushes up the discharge valve 30 to open the valve. The liquid is pressurized through the inner discharge hole 17 and the outer discharge hole 16. It is supplied into the injection cylinder portion 11.

The liquid supplied into the injection cylinder portion 11 reaches the ejection hole 6 through the communication hole 95, the annular space 96, and the locking protrusions 108a adjacent to each other in the circumferential direction of the nozzle, and reaches the ejection hole 6 from the front end opening of the ejection hole 6. It is ejected. The liquid is atomized or foamed and ejected from the ejection hole 6.

When the trigger portion 51 is released after the liquid is ejected, the trigger portion 51 is urged forward by the restoring force of the elastic plate portion 54 to return to the original position, and the piston 52 moves forward accordingly. At this time, a negative pressure is generated in the cylinder 53, and the ball valve 36 rises and opens in a state where the discharge valve 30 is closed due to this negative pressure, and the liquid in the container body A vertically passes through the pipe 15. It is sucked up by the supply cylinder portion 10 and introduced into the cylinder 53 through the inside of the second through hole 67 and the cylinder portion 66.

Then, the cover member 7 is rotated around the rotating portion 24 to move from the open position to the closed position as shown in FIG. In the present embodiment, the restricting portion 23d can overcome the overcoming portion 81b from the front to the rear by elastically deforming the connecting portion 23a. That is, when the cover member 7 is returned from the open position to the closed position, each regulating portion 23d of the pair of stopper portions 23 naturally rides over each overcoming portion 81b of the trigger portion 51 toward the rear. Therefore, when returning the cover member 7 to the closed position, it is not necessary to operate the operation portion 23b of the pair of stopper portions 23.
As a result, the closing portion 21 closes the ejection hole 6, and the restricting portion 23d is inserted between the trigger portion 51 and the abutting portion 56 to restrict the backward movement of the trigger portion 51.

In the trigger type liquid ejector 1 of the present embodiment described above, when the closed state of the ejection hole 6 by the cover member 7 is released to open the ejection hole 6 and the trigger portion 51 is moved rearward, the liquid is vertically supplied. It circulates from the inside of the cylinder portion 10 toward the ejection hole 6 side, and is ejected from the ejection hole 6. After the liquid is ejected, the ejection hole 6 is closed again by the closing portion 21 of the cover member 7. As a result, even if the liquid adheres to the inner surface of the ejection hole 6 and remains, or adheres to the front end portion of the nozzle member 5, when the liquid is ejected from the ejection hole 6, the trigger type liquid ejector 1 can be used. During storage, this liquid can be prevented from drying and solidifying. Therefore, it is possible to prevent the ejection hole 6 from being blocked, the liquid ejection direction to change, and the mist quality and foam quality of the ejected liquid from changing.

Since the cover member 7 includes the hanging portion 22 and the stopper portion 23, it is possible to suppress unintended liquid ejection due to an erroneous operation of the trigger portion 51. Specifically, since the hanging portion 22 is located in front of the trigger portion 51, it is possible to prevent the operator's finger or other member from coming into contact with the trigger portion 51 from the front, and the rear of the trigger portion 51. Movement is suppressed.
Since the restricting portion 23d of the stopper portion 23 is inserted between the abutting portion 56 and the trigger portion 51 in the front-rear direction and abuts against the trigger portion 51 from the rear, the backward movement of the trigger portion 51 is stably suppressed. Be done. Since the restricting portion 23d is sandwiched between the abutting portion 56 and the trigger portion 51 in the front-rear direction, it is possible to prevent the restricting portion 23d from unintentionally disconnecting from the abutting portion 56 and the trigger portion 51. ..
When the liquid is ejected, the restricted state of the backward movement of the trigger portion 51 by the restricting portion 23d can be released by a simple operation of pinching and approaching each operating portion 23b of the pair of stopper portions 23.

Further, in the present embodiment, when the closing portion 21 closes the ejection hole 6 that opens toward the front so as to be openable from the front, and the cover member 7 rotates about the rotating portion 24, the closing portion 21 opens. The ejection hole 6 is opened and the trigger portion 51 is allowed to move backward.
In this case, a simple operation of rotating the cover member 7 around the rotating portion 24 allows the trigger portion 51 to move backward, and the liquid can be ejected from the ejection hole 6. Further, after the liquid is ejected, the ejection hole 6 can be closed from the front by the closing portion 21, so that the ejection hole 6 can be closed more reliably. According to the above configuration, it is not necessary to perform a troublesome operation of attaching / detaching the cover member 7 to / from the trigger type liquid ejector 1 before and after ejecting the liquid, and the operability at the time of use is good. In particular, since the closing portion 21 approaches and separates from the ejection hole 6 in the front-rear direction, the operability is further improved.

Further, in the present embodiment, the closing portion 21 includes a closing plate 21a that closes the opening of the ejection cylinder portion 108, and a closing cylinder 21b that fits on the outside of the ejection cylinder portion 108.
In this case, the closing plate 21a and the closing cylinder 21b of the closing portion 21 further suppress the drying and solidification of the liquid in the ejection hole 6.

Further, in the present embodiment, when the cover member 7 is returned from the state in which the ejection hole 6 is opened to the state in which the ejection hole 6 is closed, each regulating portion 23d of the pair of stopper portions 23 causes each overcoming portion 81b of the trigger portion 51. Get over to the rear. That is, when the cover member 7 is returned to the original position (the position where the ejection hole 6 is closed) after the liquid is ejected, it is not necessary to operate each operation portion 23b of the pair of stopper portions 23, so that the operability is improved. good.

Further, in the present embodiment, the inner end portion in the left-right direction at the rear end portion of the regulation portion 23d is formed in a convex curved surface shape. Further, the pocket portion 81a on which the overcoming portion 81b is formed is arranged on the upper portion (the portion on the root side) of the trigger portion 51.
Therefore, the restricting unit 23d can easily get over the overcoming portion 81b more stably and backward, and when the restricting unit 23d gets over the overcoming portion 81b, the trigger unit 51 is suppressed from unintentionally moving backward.

Further, in the present embodiment, the contact portion 56 is the front end portion of the cylinder 53, and the restricting portion 23d is removably inserted between the cylinder 53 located behind the trigger portion 51 and the trigger portion 51. According to the above configuration, the stopper portion 23 can be stably functioned while suppressing the increase of the constituent members of the trigger type liquid ejector 1.

Further, in the present embodiment, since the hanging portion 22 covers the main plate portion 80 from the front, the hanging portion 22 stabilizes the contact of, for example, an operator's finger or another member from the front with the main plate portion 80. Can be suppressed.

Further, in the present embodiment, the hanging portion 22 includes a front cover plate 22a and a pair of side cover plates 22b. With the above configuration, the rigidity of the hanging portion 22 is increased, and the function of suppressing the backward movement of the trigger portion 51 by the hanging portion 22 becomes more stable.

Further, in the present embodiment, the vertical length of the operation unit 23b is longer than the vertical length of the regulation unit 23d. Further, the operation portion 23b includes an operation plate portion 23e and a protrusion portion 23f protruding outward in the left-right direction from the front end portion of the operation plate portion 23e. With the above configuration, the operability of the operation unit 23b is further improved.

Further, in the present embodiment, the position of the front end portion of the operation unit 23b in the front-rear direction is rearward of the position of the front end portion of the nozzle member 5 in the front-rear direction. Since the operation unit 23b is arranged behind the nozzle member 5, it is possible to prevent the outer shape of the trigger type liquid ejector 1 from becoming large in the front-rear direction due to the provision of the operation unit 23b.

Further, in the present embodiment, a plurality of connecting portions 23a are provided on the stopper portion 23, and the plurality of connecting portions 23a are arranged apart from each other in the vertical direction. Therefore, when the operation portion 23b is operated, the stopper portion 23 can stably rotate in a predetermined direction (horizontal direction) with the connecting portion 23a as a fulcrum, and can prevent the stopper portion 23 from rotating in an unintended vertical direction or the like. ..

Further, in the present embodiment, since the cover member 7 is integrally formed by a single member, the number of members constituting the trigger type liquid ejector 1 can be suppressed to a small number, and the assembly becomes easy.

The present invention is not limited to the above-described embodiment, and the configuration can be changed without departing from the spirit of the present invention, for example, as described below.

In the above-described embodiment, the contact portion 56 is the front end portion of the cylinder 53, but the present invention is not limited to this. The contact portion 56 may be a portion of the constituent member located in front of the vertical supply cylinder portion 10 in the ejector main body 2.
Further, it is assumed that the restricting portion 23d abuts on the pocket portion 81a of the trigger portion 51, but the present invention is not limited to this. The restricting portion 23d may abut against a portion of the trigger portion 51 other than the pocket portion 81a.
Further, each component of the stopper portion 23 is not limited to the shape described in the above-described embodiment.

An example is given in which the overcoming portion 81b is arranged in the pocket portion 81a of the trigger portion 51, but the present invention is not limited to this. The overcoming portion 81b may be arranged in a portion (for example, a side plate portion 81 or the like) other than the pocket portion 81a of the trigger portion 51.
Further, the overcoming portion 81b is not limited to the convex curved surface shape described in the above-described embodiment, and may be, for example, an inclined planar shape extending inward in the left-right direction toward the front.

With the cover member 7 arranged in the open position, a fixing portion for detachably fixing the cover member 7 and the nozzle member 5 may be provided. In this case, it is suppressed that the cover member 7 is unintentionally returned to the closed position when the liquid is ejected, and the operability is further improved.

In the above-described embodiment, the nozzle member 5 includes a plurality of ejection holes 6 arranged in the circumferential direction of the nozzle, but the present invention is not limited to this. Only one ejection hole 6 may be formed in the nozzle member 5.
Further, the nozzle member 5 may include a foam-forming portion that surrounds the ejection hole 6 and has an outside air introduction hole formed inside to introduce outside air.
Further, the nozzle member 5 may include a pressure accumulating mechanism in which the on-off valve opens and the liquid is ejected from the ejection hole 6 when the pressure in the internal space exceeds a predetermined value.

In addition, it is possible to replace the constituent elements in the above-described embodiment with well-known constituent elements as appropriate without departing from the spirit of the present invention, and the above-described embodiments and modifications may be appropriately combined.

1 ... Trigger type liquid ejector, 2 ... Ejector body, 5 ... Nozzle member, 6 ... Ejection hole, 7 ... Cover member, 10 ... Vertical supply cylinder, 21 ... Closure, 21a ... Closure plate, 21b ... Closure cylinder , 22 ... hanging part, 23 ... stopper part, 23a ... connecting part, 23b ... operating part, 23d ... regulating part, 24 ... rotating part, 51 ... trigger part, 52 ... piston, 53 ... cylinder, 56 ... contact part , 81b ... Overcoming part, 108 ... Ejection cylinder part, A ... Container body, T ... Trigger mechanism

Claims (5)

The ejector body attached to the container containing the liquid,
A nozzle member provided in front of the ejector main body and having an ejection hole for ejecting a liquid, and a nozzle member.
A cover member that can open the ejection hole is provided.
The ejector body is
A vertical supply cylinder that extends in the vertical direction and sucks up the liquid in the container,
A trigger portion is provided in front of the vertical supply cylinder portion so as to be movable rearward in a forward urged state, and the liquid is discharged from the inside of the vertical supply cylinder portion to the ejection hole side by moving the trigger portion rearward. Equipped with a trigger mechanism to distribute toward
The cover member is
A closed portion that can open the ejection hole and
A hanging portion extending downward from the closed portion, arranged in front of the trigger portion, and overlapping the trigger portion when viewed from the front.
It is provided with a pair of stopper portions that are arranged on both sides of the hanging portion in the left-right direction, are connected to the hanging portion, and extend in the front-rear direction.
The stopper portion is
An elastically deformable connecting portion that connects to the hanging portion,
An operation unit arranged in front of the connecting unit and
It is arranged behind the connecting portion and inserted between the contact portion located in front of the vertical supply cylinder portion and the trigger portion of the ejector main body, and the contact portion and the trigger are inserted in the front-rear direction. It is equipped with a regulating part that comes into contact with the part.
When the operating portions of the pair of stopper portions move close to each other in the left-right direction, the restricting portions move apart from each other in the left-right direction with the connecting portion as a fulcrum, and the restricting portion moves to the contact portion. A trigger-type liquid ejector that separates from the trigger portion. The trigger type liquid ejector according to claim 1.
The cover member includes a rotating portion connected to the nozzle member.
The ejection hole opens toward the front and
The closed portion closes the ejection hole so as to be open from the front.
A trigger-type liquid ejector in which when the cover member rotates about the rotating portion, the closing portion opens the ejection hole and the trigger portion is allowed to move backward. The trigger type liquid ejector according to claim 1 or 2.
The nozzle member includes an ejection cylinder portion in which the ejection hole is formed.
The closed part is
A closing plate that closes the opening of the ejection tube, and
A trigger-type liquid ejector including a closing cylinder that protrudes from the plate surface of the closing plate and is fitted to the outside of the ejection cylinder portion. The trigger type liquid ejector according to any one of claims 1 to 3.
The trigger portion is provided with a pair of overcoming portions extending inward in the left-right direction toward the front at both ends of the trigger portion in the left-right direction.
The restricting portion is a trigger type liquid ejector capable of overcoming the overcoming portion from the front to the rear by elastically deforming the connecting portion. The trigger type liquid ejector according to any one of claims 1 to 4.
The trigger mechanism is
A piston that moves in the front-back direction in conjunction with the trigger portion,
A cylinder into which the piston is inserted and whose inside communicates with the inside of the vertical supply cylinder portion is provided.
A trigger type liquid ejector in which the contact portion is the front end portion of the cylinder.

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