JP2018108553A - Liquid ejector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably maintain an assembly of a nozzle member.SOLUTION: A liquid ejector 1 comprising: an ejector body 2 having an injection cylinder part 11 in which a content fluid is circulated; a relay member 4 which is mounted to a front end part of the injection cylinder part; and a nozzle member 5 in which a nozzle hole 6 is formed and which is assembled to the relay member. The relay member comprises a closing wall part 90, and an installation cylinder part 92 to which the nozzle member is mounted, and the nozzle member comprises a nozzle wall part 100 in which the nozzle hole is formed, and an outer fitting cylinder part 101 which is fitted to an outer side of the installation cylinder part. The nozzle member is assembled to the relay member so as to be rotatable in a circumferential direction along a circumference of an axis of the installation cylinder part, and can be rotated between an injection possible position at which the content fluid can be injected and an injection regulation position at which injection of the content fluid is regulated. A regulation part 125 is provided on the outer fitting cylinder part, and the relay member comprises an engaging part 126 which is engaged with the regulation part from the front of regulation part when the nozzle member is present at at least the injection regulation position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid ejector.

  2. Description of the Related Art Conventionally, there has been known a liquid ejector that can regulate ejection of content liquid at an arbitrary timing. As this type of liquid ejector, for example, a liquid ejector having a closing member that simply closes the nozzle hole so that the nozzle hole can be opened, or a liquid ejector that can switch between ejection and stop of the content liquid by operating the nozzle member The vessel is known.

For example, the liquid ejector disclosed in Patent Document 1 below is a double cylindrical nozzle member that is rotatably mounted on the mounting cylinder portion of the ejector body, and the jetting is performed in accordance with the rotation of the nozzle member with respect to the mounting cylinder portion. And a switching mechanism for switching between communication between the liquid flow path communicating with the inside of the container main body and the nozzle hole and blocking of the nozzle hole, and it is possible to perform switching of injection and stop of the content liquid by rotating the nozzle member. Yes. Specifically, by rotating the nozzle member with respect to the mounting cylinder portion at every predetermined rotation, the liquid flow path and the nozzle hole communicate with each other to enable the ejection of the content liquid, and the liquid flow It is possible to switch between an injection restricted state in which the communication between the passage and the nozzle hole is blocked and the injection of the content liquid is restricted.
Thereby, for example, it is possible to regulate the injection of the content liquid at the time of merchandise distribution or storage.

JP 2007-252998 A

  By the way, in the conventional liquid ejector, for example, when an operation of ejecting the content liquid is performed in the ejection restricted state, the internal pressure rises in the liquid ejector because the ejection of the content liquid to the outside is regulated. Resulting in. In this case, since the internal pressure also increases in the mounting cylinder, a stress that pushes the nozzle member out of the mounting cylinder acts on the nozzle member due to the increase in internal pressure.

  As described above, in the above-described conventional liquid ejector, a stress that pushes the nozzle member out of the mounting cylinder portion may be applied to the nozzle member in the ejection restricted state. For example, the mounting of the nozzle member to the mounting cylinder portion ( Assembling) may become unstable, and the nozzle member may be detached from the mounting cylinder.

  This invention is made | formed in view of such a situation, The objective is to provide the liquid ejector which can maintain the assembly | attachment of the nozzle member especially at the time of an injection control state stably. .

(1) A liquid ejector according to the present invention is attached to a container body that contains a content liquid, and is attached to an ejector body having an injection cylinder portion through which the content liquid flows, and a front end portion of the injection cylinder portion. A relay member, and a nozzle member in which a nozzle hole is formed and combined from the front with respect to the relay member, and the relay member covers a front end opening of the injection tube portion from the front, A mounting cylinder portion projecting forward from the blocking wall portion, to which the nozzle member is mounted, and the nozzle member includes a nozzle wall portion in which the nozzle hole is formed, and the nozzle wall portion. And an external fitting cylinder portion that projects outwardly and fits outside the attachment cylinder portion, and the nozzle member is circumferentially along the axis of the attachment cylinder portion with respect to the relay member Injectable that can be rotated and combined to inject the liquid. And an injection restricting position where the injection of the content liquid is restricted. The outer fitting tube portion is provided with a restricting portion, and the relay member includes at least the nozzle member. An engagement portion is provided that engages with the restriction portion from the front of the restriction portion when in the injection restriction position.

According to the liquid ejector according to the present invention, when the nozzle member is at least at the ejection restricting position, the engaging portion provided in the relay member is moved from the front of the restricting portion provided in the outer fitting tube portion of the nozzle member to the restricting portion. Engage. Therefore, when the nozzle member is in the injection restricted state by being located at the injection restricted position, the internal pressure of the liquid ejector rises for some reason, and there is a stress that pushes the nozzle member away from the mounting cylinder. Even if the nozzle member that has been subjected to this stress tries to move forward from the relay member, the forward movement of the nozzle member can be restricted because the engaging part is engaged with the restricting part. it can. That is, the engaging portion that engages with the restricting portion can receive a stress that pushes the nozzle member away from the mounting cylinder portion.
Accordingly, it is possible to suppress the nozzle member from being detached from the relay member particularly in the injection restricted state. Thereby, it can be set as the state which combined the relay member and the nozzle member stably, and the assembly | attachment of the nozzle member with respect to a relay member can be maintained stably.

(2) When the nozzle member is in the injectable position, the restricting portion may be separated from the engaging portion in the circumferential direction.

In this case, at the time of assembling the liquid ejector, the restricting portion interferes with the engaging portion by combining the nozzle member with the relay member from the front in a state where the restricting portion is separated from the engaging portion in the circumferential direction. Without doing so, the nozzle member can be mounted at a predetermined mounting position of the relay member. Therefore, when the nozzle member is mounted, for example, it is not necessary to perform an operation such as temporarily deforming the engaging portion and disposing the restricting portion behind the engaging portion, and the liquid ejector can be easily assembled. As a result, assembly costs can be reduced.
Further, when the nozzle member is in the ejectable position, for example, when an operation of ejecting the content liquid is performed, the content liquid is appropriately ejected from the nozzle hole, so that the internal pressure of the mounting cylinder portion is unlikely to increase. Therefore, even when the restricting portion is not engaged with the engaging portion, the assembly of the nozzle member to the relay member can be stably maintained.

(3) The nozzle member includes a nozzle cylinder portion projecting rearward from a portion located on the inner side of the outer fitting cylinder portion of the nozzle wall portion. A guide shaft portion that protrudes forward and is in close contact with the inside of the nozzle tube portion is formed at a portion located inside the tube portion, and the nozzle tube portion and the guide shaft portion A switching passage for switching between communication between the injection cylinder and the nozzle hole and blocking of the nozzle hole through the mounting cylinder and the nozzle cylinder is formed between the relay member and the nozzle member relative to the relay member. When the nozzle member is in the injectable position, the inside of the injection cylinder portion communicates with the nozzle hole, and when the nozzle member is in the injection restriction position, the inside of the injection cylinder portion and the nozzle hole Communication is interrupted It may be.

  In this case, the nozzle member is relatively rotated with respect to the relay member, and an operation of rotating between the injectable position and the injection restricting position is performed, so that the inside of the injection cylinder portion and the nozzle hole are made using the switching passage. Can be switched between communication and disconnection. As described above, since it is possible to quickly switch between the injectable state and the injection restricted state with a simple operation by simply rotating the nozzle member with respect to the relay member, the operability can be further improved.

  According to the liquid ejector according to the present invention, it is possible to stably maintain the assembly of the nozzle member particularly in the injection restricted state.

It is a longitudinal section showing an embodiment of a trigger type liquid ejector which is a liquid ejector concerning the present invention. It is the longitudinal cross-sectional view which expanded the periphery of the nozzle member shown in FIG. It is sectional drawing along the BB line shown in FIG. It is sectional drawing which shows the state which rotated the nozzle member from the state shown in FIG. 3, and was located in the injectable position from the injection control position. It is the front view which looked at the nozzle member and relay member in an injection control position from the front. It is the front view which looked at the nozzle member and relay member in a jettable position from the front.

  Hereinafter, an embodiment of a liquid ejector according to the present invention will be described with reference to the drawings. In the present embodiment, a trigger type liquid ejector will be described as an example of the liquid ejector.

As shown in FIG. 1, the trigger type liquid ejector 1 of the present embodiment is mounted on a container body A containing a content liquid via a mounting cap 3 and sucks up the content liquid and the vertical supply cylinder 10. An ejector body 2 having an injection cylinder portion 11 through which liquid flows, a relay member 4 attached to the injection cylinder portion 11, and a nozzle hole 6 that is combined with the relay member 4 and injects the content liquid are formed. And a nozzle member 5.
Each component of the trigger type liquid ejector 1 is a molded product using a synthetic resin unless otherwise specified.

  In the present embodiment, the central axis of the vertical supply cylinder portion 10 is defined as an axis O1, the container body A side along the axis O1 is referred to as the lower side, and the opposite side is referred to as the upper side, and the direction along the axis O1 is referred to as the vertical direction. Further, in a plan view seen from the vertical direction, one direction orthogonal to the axis O1 is referred to as the front-rear direction, and a direction orthogonal to both the vertical direction and the front-rear direction is referred to as the horizontal direction.

The ejector body 2 includes the vertical supply cylinder part 10 extending in the vertical direction, the injection cylinder part 11 disposed in front of the vertical supply cylinder part 10, and the inside communicating with the inside of the vertical supply cylinder part 10, And is formed in an L shape in a side view as viewed from the left-right direction.
Of the front and rear directions, the direction in which the injection cylinder 11 is located with respect to the vertical supply cylinder 10 is referred to as the front side or the front, and the opposite direction is referred to as the rear or the rear.

The vertical supply cylinder portion 10 includes a top cylinder-shaped outer cylinder 12 and an inner cylinder 13 fitted into the outer cylinder 12.
The outer cylinder 12 includes a large-diameter portion 12a, a small-diameter portion 12b disposed above the large-diameter portion 12a and having a smaller diameter than the large-diameter portion 12a, an upper end portion of the large-diameter portion 12a, and a lower end portion of the small-diameter portion 12b. And a flange portion 12c for connecting the two. The small diameter portion 12b is closed at the upper opening portion by the top wall portion 12d.

  The inner cylinder 13 includes a large-diameter portion 13a, a small-diameter portion 13b that is disposed above the large-diameter portion 13a and has a smaller diameter than the large-diameter portion 13a, and an upper end portion of the large-diameter portion 13a and a lower end portion of the small-diameter portion 13b. And a flange portion 13c for connecting the two.

  In the small diameter portion 13b of the inner cylinder 13, an upper portion of a pipe 15 disposed in the container body A and having a lower end opening located at a bottom portion (not shown) of the container body A is fitted. The flange portion 13c of the inner cylinder 13 is positioned below the flange portion 12c of the outer cylinder 12 in a state where a clearance S1 is secured between the flange portion 12c of the outer cylinder 12 and the flange portion 12c.

In the large diameter portion 13 a of the inner cylinder 13, an annular flange portion 13 d that protrudes outward in the radial direction is formed at a portion protruding downward from the large diameter portion 12 a of the outer cylinder 12. The flange portion 13d is disposed in the upper end portion of the mounting cap 3 that is mounted (for example, screwed) to the mouth portion A1 of the container body A, and locks the upper end portion of the mounting cap 3 so as to be rotatable about its axis. .
The collar 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.
In addition, the axis O1 of the vertical supply cylinder portion 10 constituted by the outer cylinder 12 and the inner cylinder 13 is eccentric rearward with respect to the container axis of the container body A.

  The injection cylinder part 11 is connected to the front side of the upper end part in the vertical supply cylinder part 10 at the rear end part, and injects the content liquid toward the front. The inside of the injection cylinder part 11 communicates with the inside of the vertical supply cylinder part 10 through an outer discharge hole 16 formed in the outer cylinder 12 and an inner discharge hole 17 formed in the inner cylinder 13. In the present embodiment, the central axis of the injection cylinder portion 11 is referred to as an axis O2. The axis O2 extends in the front-rear direction.

A discharge valve 30 that is elastically deformable in the vertical direction is disposed on the inner side of the upper end portion of the inner cylinder 13.
The discharge valve 30 is fitted in the inner cylinder 13, is disposed below the base part 31 with the base part 31 in contact with the lower surface of the top wall part 12 d of the outer cylinder 12, and has a step on the inner peripheral surface of the inner cylinder 13. And a hollow spring portion 34 that vertically connects the base portion 31 and the valve body 33 to the valve seat 32 formed in a shape.

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

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 is formed with an annular tapered cylinder portion 35 that protrudes inward. Yes.
The tapered cylindrical portion 35 is gradually reduced in diameter as it goes downward. A ball valve 36 that is detachably seated on the inner peripheral surface of the tapered cylindrical portion 35 is disposed inside the tapered cylindrical portion 35. In the inner cylinder 13, the ball valve 36 communicates and blocks a space located above the tapered cylinder part 35 and a space located below the taper cylinder part 35.

In the outer cylinder 12, a cylinder cylinder portion 40 that protrudes forward is formed integrally with a portion located below the injection cylinder portion 11.
The cylinder cylinder portion 40 is open toward the front and is partially formed integrally with the flange portion 12c of the outer cylinder 12.

  The ejector main body 2 extends downward from the injection cylinder portion 11, and is arranged in a forward biased state so as to be swingable (movable) backward, in conjunction with the swing of the trigger portion 51. A main piston 52 that moves in the front-rear direction, a main cylinder 53 that is pressurized and depressurized as the main piston 52 moves, an elastic plate portion 54 that biases the trigger portion 51 forward, and the vertical supply cylinder portion 10 And the cover body 55 which covers the whole injection | emission cylinder part 11 from upper direction, the left-right direction, and back is further provided.

  The discharge valve 30, the ball valve 36, the trigger part 51, the main piston 52, the main cylinder 53, and the elastic plate part 54 inject the content liquid from the inside of the vertical supply cylinder part 10 by swinging the trigger part 51 backward. A trigger mechanism 50 is configured to be introduced into the cylindrical portion 11 and to be injected from the injection cylindrical portion 11 to the nozzle hole 6 side.

  The main cylinder 53 protrudes forward from the outer cylinder part 60 that opens forward, the rear wall part 61 that closes the rear end opening part of the outer cylinder part 60, and the central part of the rear wall part 61. In addition, a topped cylindrical piston guide 62 whose front end is closed is provided.

The piston guide 62 has a rear opening on the inner side, and a fitting protrusion 41 protruding forward from the rear wall (the small diameter portion 12b of the outer cylinder 12) of the cylinder cylinder portion 40 is provided in the opening. It is mated.
The outer cylinder part 60 is fitted inside the cylinder cylinder part 40. The inner peripheral surface of the cylinder cylinder portion 40 and the outer peripheral surface of the outer cylinder portion 60 are in close contact with each other at both ends in the front-rear direction. On the other hand, an annular gap S2 is secured in an intermediate portion located between both end portions in the front-rear direction among the inner peripheral surface of the cylinder tube portion 40 and the outer peripheral surface of the outer tube portion 60. Yes.

  The outer cylinder part 60 is formed with a first air vent 63 that allows the inside of the outer cylinder part 60 to communicate with the gap S2. A second ventilation hole 64 that communicates the gap S2 with the flange portion 12c of the outer cylinder 12 and the gap S1 defined between the flange portion 12c of the outer cylinder 12 and the flange portion 13c of the inner cylinder 13. Is formed. Further, the flange portion 13 c of the inner cylinder 13 is formed with a third ventilation hole 65 that communicates the gap S <b> 1 with the inside of the large diameter portion 13 a of the inner cylinder 13 and the mounting cap 3.

  A first through hole 66 that penetrates the outer cylinder 12 and the main cylinder 53 in the front-rear direction is formed in the rear wall portion 61 of the main cylinder 53 in a portion located above the piston guide 62. In the illustrated example, a cylindrical portion protruding rearward is formed at the opening peripheral edge portion of the first through hole 66 in the rear wall portion 61, and this cylindrical portion is formed in the small diameter portion 12 b of the outer cylinder 12. It is fitted in the through hole.

The first through hole 66 communicates with the space located between the discharge valve 30 and the ball valve 36 in the inner cylinder 13 through the second through hole 67 formed in the inner cylinder 13 of the vertical supply cylinder portion 10. doing.
Accordingly, the inside of the main cylinder 53 communicates with the space located between the discharge valve 30 and the ball valve 36 in the inner cylinder 13 through the first through hole 66 and the second through hole 67.
Accordingly, the discharge valve 30 switches communication between the injection cylinder portion 11 and the main cylinder 53 and shuts off the same, and the ball valve 36 switches communication between the container body A and the main cylinder 53 and shuts off.

The main piston 52 includes a columnar connecting portion 70 connected to the trigger portion 51, and a piston cylinder 71 positioned rearward of the connecting portion 70 and having a larger diameter than the connecting portion 70, and as a whole. It is formed in a cylindrical shape that opens rearward.
The main cylinder 53 and the main piston 52 are disposed on a common axis (not shown) extending along the front-rear direction.

  The piston cylinder 71 opens rearward and has a piston main body 72 into which the piston guide 62 is inserted. The piston cylinder 71 projects outward from the rear end of the piston main body 72 in the radial direction. For example, a sliding cylinder portion 73 that closely contacts the inner peripheral surface of the portion 60 is provided.

The piston main body 72 has an inner diameter larger than the outer diameter of the piston guide 62. In the illustrated example, there is a slight gap between the inner peripheral surface of the piston main body 72 and the outer peripheral surface of the piston guide 62.
The sliding cylinder part 73 is formed in a tapered shape that gradually increases in diameter from the center part in the front-rear direction toward the front and rear, and lip parts 73 a located at both ends in the front-rear direction are formed on the inner peripheral surface of the outer cylinder part 60. Abuts slidably.

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

  When the trigger part 51 is in the foremost swing position (the foremost movement position), the sliding cylinder part 73 of the main piston 52 closes the first vent hole 63. When the main piston 52 moves backward by a predetermined amount due to the backward swing of the trigger portion 51, the sliding cylinder portion 73 opens the first vent hole 63. Accordingly, the inside of the container body A communicates with the outside through the third ventilation hole 65, the gap S 1, the second ventilation hole 64, the gap S 2, and the first ventilation hole 63.

  The trigger portion 51 has a main plate member 80 having a front surface that is concavely curved toward the rear in a side view as viewed from the left and right directions, and a pair of side plate members 81 that stand rearward from the left and right side edge portions of the main plate member 80. And.

  A pair of connecting plates 82 are formed at the upper end portions of the pair of side plate members 81 so as to extend upward to the side of the injection tube portion 11 and sandwich the injection tube portion 11 from the left-right direction. The pair of connecting plates 82 are provided with a rotating shaft portion 83 projecting outward in the left-right direction. These rotary shaft portions 83 are rotatably supported by bearing portions provided on an upper plate member 84 that covers the upper side of the injection cylinder portion 11. Thereby, the trigger part 51 can be swung in the front-rear direction around the rotation shaft part 83.

The trigger portion 51 is formed with an opening portion 51a penetrating the main plate member 80 in the front-rear direction, and a connecting cylinder 85 is formed so as to extend rearward from the peripheral portion of the opening portion 51a.
A pair of connecting shafts 86 projecting in the left-right direction toward the inner side of the connecting cylinder 85 are formed on a portion of the inner peripheral surface of the connecting cylinder 85 positioned on the rear side. These connecting shafts 86 are inserted into connecting holes formed in the connecting portion 70 of the main piston 52. Thereby, the trigger part 51 and the main piston 52 are mutually connected.

  The connecting portion 70 of the main piston 52 is connected to the connecting shaft 86 so as to be rotatable about its axis and to be movable by a predetermined amount in the vertical direction. Thereby, the main piston 52 can be moved back and forth as the trigger portion 51 swings in the front-rear direction.

The horizontal plate-like upper plate member 84 connected to the top wall portion 12 d of the outer cylinder 12 in the vertical supply cylinder portion 10 is attached to the upper surface of the injection cylinder portion 11.
The elastic plate portions 54 are integrally formed on the left and right sides of the upper plate member 84 so as to be formed in an arc shape protruding forward in a side view as viewed from the left and right directions and extending to the lower side of the injection cylinder portion 11. Yes. The elastic plate portion 54 is formed in a concentric arc shape in a side view as viewed from the left-right direction, and includes a pair of leaf springs arranged in the front-rear direction.

Of the pair of leaf springs, the leaf spring located on the front side is the main leaf spring 54a, and the leaf spring located on the rear side is the sub leaf spring 54b.
The lower ends of the main plate spring 54a and the sub plate spring 54b are integrally connected via an arcuate folded portion 54c. A locking piece 54d projects downward from the folded portion 54c, and the locking piece 54d is inserted into and engaged with a pocket portion 81a formed in the side plate member 81 of the trigger portion 51 from above. ing.
Thereby, the elastic board part 54 is urging | biasing the trigger part 51 toward the front via the latching piece 54d and the pocket part 81a.

The upper end portion of the main plate member 80 of the trigger portion 51 is in contact with the lower end portion of the partition wall 90 in the relay member 4 to be described later from the rear by the biasing by the elastic plate portion 54. Thereby, the trigger part 51 is positioned in the foremost swing position.
Note that when the trigger portion 51 is pulled backward and moved from the foremost swing position, the elastic plate portion 54 is elastically deformed so as to move the folded portion 54c backward via the locking piece 54d. At this time, in the elastic plate portion 54, the sub leaf spring 54b is elastically deformed larger than the main leaf spring 54a.

  Even if the trigger piece 51 is pulled rearward, the locking piece 54d is pulled upward from the pocket portion 81a until the trigger portion 51 reaches the rearmost swing position (the rearmost movement position). The engaged state with the pocket portion 81a is maintained.

  As shown in FIGS. 1 and 2, the relay member 4 is attached to the front end portion (tip end portion) of the injection cylinder portion 11. The relay member 4 is located on the front side of the front end opening of the injection cylinder part 11 and is disposed opposite to the front end opening of the injection cylinder part 11 so as to cover the front end opening from the front (blocking wall part). ) 90, an outer fitting cylinder 91 that extends rearward from the partition wall 90 and is externally fitted to the injection cylinder part 11, and a mounting cylinder part that protrudes forward from the partition wall 90 and to which the nozzle member 5 is mounted. 92 and a guide shaft portion 94 projecting forward from a portion of the partition wall 90 located inside the mounting cylinder portion 92.

  The mounting cylinder portion 92 and the guide shaft portion 94 extend forward from the partition wall 90 along a center axis (hereinafter referred to as an axis O3) that is eccentric downward with respect to the axis O2 of the injection cylinder portion 11, and the axis O3 and It is arranged coaxially. In the present embodiment, the direction orthogonal to the axis O3 in a front view viewed from the direction of the axis O3 is referred to as the nozzle radial direction, and the direction along the axis O3 (that is, the axis of the mounting cylinder 92) is referred to as the nozzle circumferential direction. . The axis O3 extends in the front-rear direction.

  The lower end portion of the partition wall 90 is in contact with the upper end portion of the main plate member 80 in the trigger portion 51 from the front. Thereby, as described above, the trigger portion 51 is positioned at the foremost swing position. Further, the cover body 55 is assembled in a state of being arranged at the upper end edge of the partition wall 90.

The guide shaft portion 94 is formed in a crested cylindrical shape whose front end is closed and opened rearward. However, the shape of the guide shaft portion 94 is not limited to this case. For example, the guide shaft portion 94 may be formed in a solid cylindrical shape.
The guide shaft portion 94 is formed so as to fit inside the mounting cylinder portion 92 without protruding forward from the mounting cylinder portion 92.

  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 inside the mounting cylinder portion 92. Thereby, the annular space 96 defined between the guide shaft portion 94 and the mounting cylinder portion 92 is communicated with the inside of the injection cylinder portion 11 through the communication hole 95.

  As shown in FIGS. 2 and 3, a first switching groove 97 that extends linearly along the front-rear direction and opens forward is formed on the outer peripheral surface of the guide shaft portion 94 on the front end side. . In the illustrated example, two first switching grooves 97 are formed at equal intervals in the nozzle circumferential direction. However, the number of the first switching grooves 97 is not limited to two, and for example, one or three or more may be formed.

  As shown in FIGS. 1 and 2, the nozzle member 5 is attached to the relay member 4 via the mounting cylinder 92 so as to be integrally combined with the relay member 4 from the front. In this embodiment, the nozzle member 5 is combined with the relay member 4 so as to be rotatable in the nozzle circumferential direction along the axis O3.

  The nozzle member 5 is disposed so as to face the front end surface of the guide shaft portion 94, and is provided so as to protrude rearward from the nozzle wall portion 100 in which the nozzle hole 6 is formed. The external fitting cylinder part 101 fitted to an outer side, and the nozzle cylinder part 102 projected toward the back from the part located inside the external fitting cylinder part 101 among the nozzle wall parts 100 are provided.

  The external fitting cylinder portion 101 is externally fitted to the mounting cylinder portion 92 so as to be rotatable around the axis O3. A first protrusion 101 a that protrudes inward in the nozzle radial direction and extends in the nozzle circumferential direction is formed on the inner peripheral surface of the outer fitting cylindrical portion 101, and the nozzle diameter is formed on the outer peripheral surface on the front end side of the mounting cylindrical portion 92. A second protrusion 92a that protrudes outward in the direction and extends in the nozzle circumferential direction is formed, and the first protrusion 101a engages with the second protrusion 92a from the rear of the second protrusion 92a.

  The nozzle cylinder portion 102 extends rearward from the first switching groove 97 formed on the outer peripheral surface of the guide shaft portion 94, and the rear end portion thereof is disposed with a gap between the partition wall 90 in the front-rear direction. Has been. At this time, the guide shaft portion 94 is in close contact with the inside of the nozzle tube portion 102 so as to be rotatable about the axis O3.

As shown in FIGS. 2 and 3, a second switching groove 103 that extends linearly in the front-rear direction and opens rearward is formed on the inner peripheral surface of the nozzle cylinder portion 102. In the illustrated example, two second switching grooves 103 are formed at equal intervals in the circumferential direction of the nozzle, and when the nozzle member 5 is positioned at an injectable position P1, which will be described later, the first switching groove 97 It is formed so as to communicate with each other.
The number of the second switching grooves 103 is not limited to two. For example, one or three or more may be formed, and the second switching grooves 103 are preferably arranged corresponding to the number of the first switching grooves 97. .

  As shown in FIG. 2, the nozzle member 5 is located between the outer fitting tube portion 101 and the nozzle tube portion 102, extends rearward from the nozzle wall portion 100, and extends around the axis O <b> 3 inside the mounting tube portion 92. Further, a support cylinder portion 105 that is rotatably fitted is provided.

The support tube portion 105 is fitted inside the mounting tube portion 92 so as to sandwich the mounting tube portion 92 in the nozzle radial direction with the outer fitting tube portion 101. Thereby, the external fitting cylinder part 101 can be fitted to the mounting cylinder part 92 in a more stable state. Therefore, the support cylinder part 105 supports the fitting of the outer fitting cylinder part 101, and contributes to the more stable mounting performance of the nozzle member 5 with respect to the relay member 4.
However, the support cylinder part 105 is not essential and may not be provided.

The nozzle hole 6 is formed in the nozzle wall portion 100 in a state of being arranged coaxially with the axis O3.
As shown in FIGS. 2 and 3, the rear surface of the nozzle wall portion 100 is located inside the nozzle cylinder portion 102 and communicates with the nozzle hole 6 and swirls the content liquid in the nozzle circumferential direction. A concave spin chamber 110 and a spin groove 111 that extends from the spin chamber 110 toward the inner peripheral surface of the nozzle cylinder 102 and feeds the content liquid into the spin chamber 110 are formed.

The spin chamber 110 is formed so as to be recessed forward, and is formed in a circular shape when viewed from the front when viewed from the front-rear direction.
The spin groove 111 is formed, for example, so as to extend in the tangential direction of the inner peripheral wall in the spin chamber 110, and feeds the content liquid from the first switching groove 97 described above into the spin chamber 110. As a result, a spin that rotates in the circumferential direction of the nozzle in the spin chamber 110 can be applied to the content liquid, and the spinned content liquid can be guided to the nozzle hole 6.

  In the illustrated example, two spin grooves 111 are formed at intervals in the nozzle circumferential direction. At this time, the inlet of the spin groove 111 positioned on the inner peripheral surface side of the nozzle cylinder portion 102 and the second switching groove 103 formed on the inner peripheral surface of the nozzle cylinder portion 102 are in the nozzle circumferential direction as viewed from the front-rear direction. The positions are formed to be the same position.

Therefore, the nozzle member 5 is rotated about the axis O3 with respect to the relay member 4, and the nozzle circumferential direction position of the second switching groove 103 formed on the inner peripheral surface of the nozzle cylinder portion 102 is set as shown in FIG. By aligning the position of the first switching groove 97 formed on the outer peripheral surface of the guide shaft portion 94 with the nozzle circumferential direction, the inside of the spin groove 111 and the annular space are interposed via the first switching groove 97 and the second switching groove 103. 96 can be communicated with each other.
That is, the nozzle hole 6 and the inside of the injection cylinder 11 can be communicated with each other through the spin chamber 110, the spin groove 111, the first switching groove 97, the second switching groove 103, the annular space 96, and the communication hole 95. Can be supplied to the nozzle hole 6 from within the injection cylinder portion 11.

As described above, in the present embodiment, the nozzle member 5 is rotated around the axis O <b> 3, thereby passing through the spin chamber 110, the spin groove 111, the first switching groove 97, the second switching groove 103, the annular space 96 and the communication hole 95. The communication between the nozzle hole 6 and the inside of the injection cylinder 11 and the blocking thereof can be switched. That is, the nozzle hole 6 can be communicated with the inside of the injection cylinder portion 11 only when the nozzle member 5 is rotated about the axis O3 and is positioned at a predetermined rotational position, and the non-communication state is established at other rotational positions. can do.
The rotational position of the nozzle member 5 where the nozzle hole 6 and the inside of the injection cylinder portion 11 communicate with each other as shown in FIG. 4 is referred to as an injectable position P1, and the nozzle hole 6 and the injection cylinder portion as shown in FIG. A rotation position at which communication with the inside of the motor 11 is blocked is referred to as an injection restriction position P2. Therefore, the nozzle member 5 is rotatable around the axis O3 between the injectable position P1 and the injection restricting position P2.

  The nozzle hole 6 is in an injectable state in which the content liquid can be ejected when the nozzle member 5 is positioned at the injectable position P1, and the content liquid is ejected when the nozzle member 5 is positioned in the injection regulation position P2. It becomes the controlled injection state. Therefore, it is possible to switch between the injectable state and the injectable state by rotating the nozzle member 5 between the injectable position P1 and the injectable restriction position P2.

  The first switching groove 97 and the second switching groove 103 described above are formed between the nozzle cylinder portion 102 and the guide shaft portion 94, and the inside of the mounting cylinder portion 92 is associated with the relative rotation of the nozzle member 5 with respect to the relay member 4. In addition, a switching passage 115 for switching communication between the injection cylinder portion 11 and the nozzle hole 6 through the nozzle cylinder portion 102 and the blocking thereof is configured.

  That is, the switching passage 115 is formed on the outer peripheral surface of the guide shaft portion 94, is formed on the first switching groove 97 that communicates with the nozzle hole 6, and the inner peripheral surface of the nozzle cylinder portion 102, and communicates with the injection cylinder portion 11. And a second switching groove 103. The second switching groove 103 communicates with the first switching groove 97 when the nozzle member 5 is positioned at the injectable position P1, and the first switching groove 97 when the nozzle member 5 is positioned at the injection restricting position P2. Communication with is interrupted. 1 and 2 show a state in which the nozzle member 5 is located at the injection restriction position P2.

  As shown in FIGS. 2 and 5, the nozzle member 5 includes a surrounding tube portion 120 that protrudes forward from the nozzle wall portion 100 while surrounding the nozzle hole 6, and a surrounding tube portion of the nozzle wall portion 100. And an outer cylinder 121 projecting forward from a portion located on the outer side in the nozzle radial direction of 120. 5 shows a front view of the nozzle member 5 and the relay member 4 in FIG. 2 as viewed from the front in the front-rear direction, and thus shows a state in which the nozzle member 5 is located at the injection restriction position P2. Yes. The surrounding cylinder part 120 and the outer cylinder part 121 are arranged coaxially with the axis O3. The front end of the outer cylinder portion 121 is located in front of the front end of the surrounding cylinder portion 120. The outer peripheral surface of the outer cylinder portion 121 is formed in an octagonal shape when viewed from the front and back.

  Between the surrounding tube portion 120 and the outer tube portion 121, two connecting portions 122 that connect both the tube portions 120 and 121 are provided. The two connecting portions 122 are arranged at equal intervals in the nozzle circumferential direction, and connect the outer peripheral surface of the surrounding tube portion 120 and the inner peripheral surface of the outer tube portion 121, respectively.

Two restricting portions 125 are arranged in the external fitting cylinder portion 101. The restricting portion 125 protrudes outward in the nozzle radial direction from the outer peripheral surface of the outer fitting cylinder portion 101. The two restricting portions 125 are arranged at equal intervals in the nozzle circumferential direction, that is, are arranged separately at positions opposite to the nozzle radial direction across the axis O3, and the nozzle member 5 is at the injection restricting position P2. The outer fitting cylinder portion 101 is provided so as to be positioned separately at the upper end and the lower end. The restricting portion 125 is formed so as to extend in the nozzle circumferential direction, and is disposed at the same position as the connecting portion 122 in the nozzle circumferential direction when viewed from the front-rear direction. The thickness of the restricting portion 125 in the front-rear direction is constant over the entire area. The outer end edge in the nozzle radial direction of the restricting portion 125 is formed in an arc shape around the axis O3 when viewed from the front and back.
In addition, although the regulation part 125 of this embodiment is provided in the outer peripheral surface of the rear-end part of the external fitting cylinder part 101, it is not limited to such a structure, It is forward from the rear-end part of the external fitting cylinder part 101. It may be provided at a position separated from each other.

  The relay member 4 further includes two engaging portions 126 that respectively engage with the restricting portions 125 from the front of the two restricting portions 125 when the nozzle member 5 is at the injection restricting position P2. The two engaging portions 126 are arranged at equal intervals in the circumferential direction of the nozzle, that is, are arranged separately at opposite positions in the nozzle radial direction across the axis O3, and are respectively provided at the upper end and the lower end of the mounting cylinder portion 92. It is provided separately. The length of the engaging portion 126 in the nozzle circumferential direction is longer than the length of the restricting portion 125 in the nozzle circumferential direction. The engaging portion 126 is arranged in a wider range in the nozzle circumferential direction than the restricting portion 125 when the nozzle member 5 is at the injection restricting position P2.

  The engaging portion 126 has a first protruding portion 127 that protrudes outward in the nozzle radial direction from the outer peripheral surface of the rear end portion of the mounting cylinder portion 92, and a forward direction from the outer end portion in the nozzle radial direction of the first protruding portion 127. A projecting second projecting portion 128 and an engaging claw 129 projecting inward in the nozzle radial direction from the front end portion of the second projecting portion 128 are provided.

  The first protrusion 127 is a plate-like member that is formed integrally with a part of the front surface of the partition wall 90 and extends in the left-right direction. Moreover, the 1st protrusion part 127 is arrange | positioned so that a slight clearance may be formed between the rear surface of the control part 125 when the nozzle member 5 exists in the injection control position P2. The inner surface in the nozzle radial direction of the second protrusion 128 extends in both the front-rear direction and the left-right direction. Moreover, the 2nd protrusion part 128 is arrange | positioned so that a slight clearance may be formed between the nozzle member 5 and the outer end edge in the nozzle radial direction of the restricting part 125 when the nozzle member 5 is at the injection restricting position P2. The rear surface of the engaging claw 129 extends in both the nozzle radial direction and the left-right direction. The inner end edge in the nozzle radial direction of the engaging claw 129 extends in the left-right direction. The restricting portion 125 can come into contact with the rear surface of the engaging claw 129 while sliding, and the engaging claw 129 is in close contact with the restricting portion 125 when the nozzle member 5 is at the injection restricting position P2. Has been placed. The distance in the front-rear direction between the front surface of the first protrusion 127 and the rear surface of the engaging claw 129 is constant over the entire area. The restricting portion 125 may be able to contact the front surface of the first projecting portion 127 and the inner surface in the nozzle radial direction of the second projecting portion 128 while sliding.

  As shown in FIG. 6, when the nozzle member 5 is in the injectable position P <b> 1, the restricting portion 125 is separated from the engaging portion 126 in the nozzle circumferential direction. That is, a gap in which the restricting portion 125 can be disposed is formed between the engaging portions 126 adjacent in the nozzle circumferential direction.

  The engaging portion 126 of the present embodiment is provided on the outer peripheral surface of the mounting cylinder portion 92, but is not limited to such a configuration, and is provided in another portion of the relay member 4 (for example, the partition wall 90). Also good. Further, although the engaging portion 126 is provided on the outer peripheral surface of the rear end portion of the mounting cylinder portion 92, it may be provided at a position spaced forward from the rear end portion.

  The trigger type liquid ejector 1 according to the present embodiment includes two restriction portions 125 and two engagement portions 126, respectively. Also good. Even in a configuration in which three or more are provided, the restricting portion 125 may be arranged at equal intervals in the nozzle circumferential direction, and the engaging portion 126 may be arranged at equal intervals in the nozzle circumferential direction. A gap in which the restricting portion 125 can be disposed may be formed between the engaging portions 126 adjacent in the nozzle circumferential direction.

  The restricting portion 125 may be formed in a flange shape extending over the entire circumference on the outer peripheral surface of the outer fitting cylindrical portion 101. Further, the engaging portion 126 may be formed so as to extend over the entire circumference around the axis O3. That is, regardless of the relative rotation position of the nozzle member 5 with respect to the relay member 4, regardless of whether the nozzle member 5 is located at either the injectable position P <b> 1 or the injection restriction position P <b> 2, the restriction portion 125 and the engagement portion 126. It may be configured such that the engagement with is always maintained. In these cases, it is preferable that at least one of the restricting portion 125 and the engaging portion 126 is made of a material that can be restored to the shape shown in FIG. 2 even if temporarily deformed.

(Operation of trigger type liquid ejector)
Next, the case where the trigger type liquid ejector 1 comprised as mentioned above is used is demonstrated. It is assumed that the content liquid is filled in each part of the trigger type liquid ejector 1 by a plurality of operations of the trigger unit 51 and the content liquid can be sucked up from the vertical supply cylinder part 10. Moreover, as shown in FIG.4 and FIG.6, the nozzle member 5 shall be positioned in the jettable position P1.

  When the trigger 51 shown in FIG. 1 is pulled backward against the urging force of the elastic plate 54, the main piston 52 moves backward with the rearward movement of the trigger 51. It can be introduced into the inner cylinder 13 of the vertical supply cylinder part 10 through the first through hole 66 and the second through hole 67. Then, the content liquid introduced into the inner cylinder 13 pushes down the ball valve 36 and closes it, and pushes up the discharge valve 30 to open the valve, so that the inside of the injection cylinder portion 11 passes through the inner discharge hole 17 and the outer discharge hole 16. The content liquid can be supplied in a pressurized state.

  Then, since the nozzle member 5 is positioned at the injectable position P <b> 1, the content liquid supplied into the injection cylinder portion 11 is passed through the communication hole 95, the annular space 96, the second switching groove 103 and the first switching groove 97. It can be supplied into the spin groove 111. Accordingly, the content liquid can be supplied into the spin chamber 110 while flowing along the spin groove 111, and the content liquid can be ejected forward from the nozzle hole 6. In particular, since the content liquid can be sufficiently swirled in the spin chamber 110, the content liquid on which the spin is applied can be sprayed forward from the nozzle hole 6 in the form of a mist.

When the trigger part 51 is released after the injection of the content liquid, the trigger part 51 is urged forward by the elastic restoring force of the elastic plate part 54 to return to the original position. Move forward. Therefore, a negative pressure is generated in the main cylinder 53, and the content liquid in the container A can be sucked up to the vertical supply cylinder portion 10 through the pipe 15 with the discharge valve 30 closed by the negative pressure.
Then, the newly sucked content liquid pushes up the ball valve 36 to open it, and is introduced into the main cylinder 53. Thereby, it can prepare for the next injection.

On the other hand, when the trigger type liquid ejector 1 is stored after the content liquid is ejected, or when the product is distributed, the nozzle member 5 is rotated around the axis O3 with respect to the relay member 4, and FIG. 3 and FIG. As shown, it is positioned at the injection restriction position P2.
Thereby, since the communication between the first switching groove 97 and the second switching groove 103 can be blocked, the supply of the content liquid from the inside of the injection cylinder portion 11 to the nozzle hole 6 side through the switching passage 115 can be restricted. . Therefore, the trigger liquid ejector 1 can be stored and distributed in a state in which the injection of the content liquid through the nozzle hole 6 is restricted and the liquid leakage from the nozzle hole 6 is suppressed. be able to.

  In the trigger type liquid ejector 1 of the present embodiment, when the nozzle member 5 is at least at the injection restriction position P2, the engaging portion 126 provided in the relay member 4 is the restriction portion provided in the external fitting cylinder portion 101 of the nozzle member 5. The restriction portion 125 is engaged from the front of 125. Therefore, when the nozzle member 5 is in the injection restricting state due to being positioned at the injection restricting position P2, the internal pressure of the trigger type liquid ejector 1 rises for some reason, and the nozzle member 5 is removed from the mounting cylinder 92. Even if the nozzle member 5 receiving the stress tries to move forward from the relay member 4, the engaging portion 126 is engaged with the restricting portion 125. The forward movement of the member 5 can be restricted. That is, the engaging portion 126 that engages with the restricting portion 125 can receive a stress that pushes the nozzle member 5 out of the mounting cylinder portion 92.

  Moreover, since the trigger type liquid ejector 1 of the present embodiment includes the two engaging portions 126 arranged at equal intervals in the nozzle circumferential direction, the nozzle member 5 is pushed away from the mounting cylinder portion 92. These stresses can be uniformly received by these engaging portions 126. Therefore, it is possible to prevent the nozzle member 5 from being inclined with respect to the axis O3 when stress is generated.

  Accordingly, it is possible to suppress the nozzle member 5 from being detached from the relay member 4 particularly in the injection restricted state. Thereby, it can be set as the state which combined the relay member 4 and the nozzle member 5 stably, and the assembly | attachment of the nozzle member 5 with respect to the relay member 4 can be maintained stably.

Further, when the nozzle member 5 is in the injectable position P1, the restricting portion 125 is separated from the engaging portion 126 in the nozzle circumferential direction.
Therefore, when the trigger type liquid ejector 1 is assembled, the restriction member 125 is combined with the relay member 4 from the front in a state where the restriction portion 125 is separated from the engagement portion 126 in the nozzle circumferential direction. The nozzle member 5 can be mounted at a predetermined mounting position of the relay member 4 without interfering with the engaging portion 126. Therefore, when the nozzle member 5 is mounted, for example, it is not necessary to perform an operation such as temporarily deforming the engaging portion 126 and disposing the restricting portion 125 behind the engaging portion 126, and the trigger type liquid ejector 1. Assembling work can be easily performed, and the assembling cost can be reduced.

  When at least one of the restricting portion 125 and the engaging portion 126 is formed to extend over the entire circumference around the axis O3, at least one of the restricting portion 125 and the engaging portion 126 is temporarily If the material can be restored to the shape shown in FIG. 2 even if it is deformed, the restricting portion 125 is engaged with the engaging portion 126 by temporarily deforming one of the members when the nozzle member 5 is attached to the relay member 4. It can be arranged behind.

  When the nozzle member 5 is in the injectable position P1, for example, when an operation of injecting the content liquid is performed, the content liquid is appropriately ejected from the nozzle hole 6, so that the internal pressure of the mounting cylinder portion 92 is unlikely to increase, and the mounting cylinder portion The stress that pushes the nozzle member 5 away from 92 is unlikely to occur. Further, the first protrusion 101 a formed on the inner peripheral surface of the outer fitting cylinder portion 101 is engaged with the second protrusion 92 a from the rear side of the second protrusion 92 a formed on the outer peripheral surface of the mounting cylinder portion 92. Therefore, the nozzle member 5 located at the injectable position P1 is also restricted from moving forward from the relay member 4. Therefore, even when the restricting portion 125 is not engaged with the engaging portion 126, the assembly of the nozzle member 5 to the relay member 4 can be stably maintained.

  As described above, the switching passage 115 is used by performing an operation of rotating the nozzle member 5 around the axis O3 with respect to the relay member 4 to move between the injectable position P1 and the injection restricting position P2. Thus, the communication between the inside of the injection cylinder 11 and the nozzle hole 6 and the blocking thereof can be switched. Therefore, since it is possible to quickly switch between the injectable state and the injection restricted state with a simple operation of simply rotating the nozzle member 5 with respect to the relay member 4, the operability is excellent.

  In particular, when the nozzle member 5 is located at the injection restricting position P2, the content liquid does not flow through the switching passage 115 formed between the nozzle cylinder portion 102 and the guide shaft portion 94. The liquid content can be retained in the annular space 96 defined between the inner peripheral surface of the portion 92 and the outer peripheral surface of the guide shaft portion 94. Therefore, even if the internal pressure in the trigger type liquid ejector 1 rises when the nozzle member 5 is in the injection restricted state by being positioned at the injection restricted position P2, the internal pressure in the annular space 96 is not reduced. Since it acts on the member 5, the area for the guide shaft portion 94 can be excluded, and the pressure receiving area of the nozzle member 5 can be reduced as compared with the injectable state. Therefore, in the injection restricted state, in addition to the engagement portion 126 engaging with the restriction portion 125, the pressure receiving area of the nozzle member 5 is also reduced compared to the injectable state. Assembly can be maintained more stably.

  The pressure receiving area of the nozzle member 5 is, for example, the projected area of the annular space 96 that appears coaxially with the axis O3 on the projection plane when the nozzle member 5 and the relay member 4 are projected onto a virtual projection plane orthogonal to the axis O3. It corresponds to.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

In the said embodiment, the structure which protrudes toward the outer side of a nozzle radial direction from the outer peripheral surface of the external fitting cylinder part 101 is shown as the control part 125, and the 1st protrusion part 127 and the 2nd protrusion part 128 are shown as the engaging part 126. Although the configuration including the engaging claw 129 is shown, the restricting portion 125 and the engaging portion 126 are not limited to this configuration, and may be appropriately changed.
For example, the engaging portion protrudes from the outer peripheral surface of the mounting tube portion 92 or the outer peripheral edge of the partition wall 90 toward the outer side in the nozzle radial direction, while the outer fitting tube portion 101 has a nozzle from the outer peripheral surface of the outer fitting tube portion 101. A rising protrusion projecting radially outward and an extending part extending rearward from the nozzle radial outer end of the rising protrusion are disposed, and the restricting part is a rear end part of the extending part Further, it is possible to adopt a configuration that engages with the engaging portion from the rear of the engaging portion by projecting inward in the nozzle radial direction. In this configuration, the restricting portion is disposed on the outer side of the outer fitting tube portion 101 in the nozzle radial direction. Moreover, the regulation part and the external fitting cylinder part 101 may be comprised separately.

  For example, in the above-described embodiment, the trigger type liquid ejector 1 is described as an example of the liquid ejector. However, the present invention is not limited to this case. For example, the present invention may be applied to a pump type liquid ejector having a pressing head, or may be applied to a liquid ejector attached to an aerosol container.

  In the above embodiment, the spin chamber 110 and the spin groove 111 are formed on the rear surface of the nozzle wall 100. However, the spin chamber 110 and the spin groove 111 are not essential and may not be provided.

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

A ... container body P1 ... injectable position P2 ... injection restricting position O3 ... axis of mounting cylinder 1 ... trigger type liquid ejector (liquid ejector)
2 ... ejector body 4 ... relay member 5 ... nozzle member 6 ... nozzle hole 11 ... injection cylinder part 90 ... partition wall (blocking wall part)
92 ... Installation cylinder part 94 ... Guide shaft part 100 ... Nozzle wall part 101 ... Outer fitting cylinder part 102 ... Nozzle cylinder part 115 ... Switching passage 125 ... Restriction part 126 ... Engagement part

Claims (3)

An ejector body mounted on a container body containing the content liquid, and having an injection cylinder part through which the content liquid flows;
A relay member attached to the front end of the injection cylinder,
A nozzle member formed with a nozzle hole combined from the front with respect to the relay member,
The relay member includes a closed wall portion that covers a front end opening of the injection tube portion from the front, and a mounting tube portion that protrudes forward from the closed wall portion and to which the nozzle member is mounted,
The nozzle member includes a nozzle wall part in which the nozzle hole is formed, and an external fitting cylinder part that protrudes rearward from the nozzle wall part and fits outside the mounting cylinder part,
The nozzle member is combined with the relay member so as to be rotatable in a circumferential direction along the axis of the mounting cylinder portion, and an ejectable position where the content liquid can be ejected and the ejection of the content liquid are regulated. It is possible to rotate between the injection restriction position and
The outer fitting tube portion is provided with a restriction portion,
The said relay member is a liquid ejector provided with the engaging part engaged with this control part from the front of the said control part when the said nozzle member exists in the said injection control position at least.   The liquid ejector according to claim 1, wherein when the nozzle member is in the ejectable position, the restricting portion is separated from the engaging portion in the circumferential direction. The nozzle member includes a nozzle cylinder portion projecting rearward from a portion located inside the outer fitting cylinder portion of the nozzle wall portion,
Of the blocking wall portion, a portion positioned on the inner side of the mounting cylinder portion is provided with a guide shaft portion that protrudes forward and in close contact with the inner side of the nozzle cylinder portion,
Between the nozzle cylinder part and the guide shaft part, in the injection cylinder part and the nozzle hole through the mounting cylinder part and the nozzle cylinder part as the nozzle member rotates relative to the relay member. A switching passage for switching between communication and blocking is formed,
When the nozzle member is in the injectable position, the inside of the injection tube portion communicates with the nozzle hole, and when the nozzle member is in the injection restriction position, the inside of the injection tube portion communicates with the nozzle hole. The liquid ejector according to claim 1 or 2, wherein is interrupted.

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