Trigger type liquid ejector

Abstract

To provide a trigger type liquid ejector capable of switching an ejection form of a liquid through an ejection hole without directly operating a switching nozzle.SOLUTION: A switching nozzle 13 has a mesh part 71A which is positioned in front of an ejection hole 12A and changes an ejection form of a liquid by passing of the liquid ejected from an ejection hole 12A, and can move with respect to a nozzle member 12 between a first ejection form position where the mesh part 71A is positioned in front of the ejection hole 12A and a second ejection form position where the mesh part 71A is shifted from the front of the ejection hole 12A. A switching member 14 has first and second linkage parts 82 linked with the switching nozzle 13. The switching nozzle 13 is moved from the first ejection form position to the second ejection form position in linkage with rotation movement from a first rotation position to a second rotation position in a nozzle circumferential direction with respect to the nozzle member 12.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a trigger-type liquid ejector.

Background Art

[0002] A trigger-type liquid ejector includes an ejector body attached to a container body containing a liquid and having an ejection cylinder portion for ejecting the liquid, a cylindrical nozzle member attached to the front end portion of the ejection cylinder portion and having an ejection hole for ejecting the liquid forward, and a plate-shaped switching nozzle hingedly connected to the front end portion of the nozzle member and positioned in front of the ejection hole. The user operates the switching nozzle with a finger or the like and rotates it around the hinge to switch the ejection form (spray form, bubble form) of the liquid from the ejection hole (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in order to switch the ejection form of the liquid, the user needs to directly operate the switching nozzle, on which the previously ejected liquid may be attached.

[0005] Therefore, an object of the present invention is to provide a trigger-type liquid ejector capable of switching the ejection form of the liquid from the ejection hole without directly operating the switching nozzle.

Means for Solving the Problems

[0006] The present invention adopts the following means to solve the above problems. That is, the trigger-type liquid ejector of the present invention includes an ejector body mounted on a container body in which a liquid is stored, a cylindrical nozzle member mounted on the front end portion of the ejector body and having an ejection hole for ejecting the liquid forward, a switching nozzle mounted on the front end portion of the nozzle member, and a switching member externally mounted on the front end portion of the nozzle member so as to be rotatable around the nozzle axis of the nozzle member. The switching nozzle is located in front of the ejection hole and has an ejection form changing portion for changing the ejection form of the liquid by allowing the liquid ejected from the ejection hole to pass therethrough. The ejection form changing portion is movable relative to the nozzle member between a first ejection form position where the ejection form changing portion is located in front of the ejection hole and a second ejection form position where the ejection form changing portion is displaced from in front of the ejection hole. The switching member has a linking portion linked to the switching nozzle, and is characterized in that the switching nozzle is moved from the first ejection form position to the second ejection form position in conjunction with the rotational movement of the nozzle member around the nozzle axis from a first rotational position to a second rotational position along the nozzle axis.

[0007] In this invention, when the switching member is rotated in one direction around the nozzle axis with respect to the nozzle member from the first rotational position to the second rotational position, the switching nozzle moves from the first ejection form position to the second ejection form position in conjunction with the rotation of the switching member, and the ejection form of the liquid can be changed without touching the switching nozzle. In this way, since the ejection form of the liquid ejected can be switched by operating the switching member instead of the switching nozzle located in front of the ejection hole, it is possible to avoid touching the liquid that may have been ejected from the ejection hole and adhered to the switching nozzle previously.

[0008] Further, in the trigger-type liquid ejector of the present invention, the switching nozzle has a switching body portion provided with the ejection form changing portion, and a pair of switching leg portions extending rearward from the switching body portion and engaging with the linking portion. The switching member has a switching cylinder portion surrounding the front end portion of the nozzle member and the switching leg portions. The linking portion projects inward in the nozzle diameter direction from the inner peripheral surface of the switching cylinder portion, and when the switching cylinder portion rotates between the first rotation position and the second rotation position, the linking portion engages with the switching leg portions to move the switching nozzle between the first ejection form position and the second ejection form position. In this invention, the cylindrical switching cylinder portion is rotated around the nozzle axis between the first rotation position and the second rotation position, and the linking portion moves the switching leg portions, so that the switching nozzle is switched between the first ejection form position and the second ejection form position as the switching cylinder portion rotates.

[0009] Further, in the trigger-type liquid ejector of the present invention, guide portions for guiding the movement of the switching nozzle between the first ejection form position and the second ejection form position with respect to the nozzle member may be separately formed on the front end portion of the nozzle member and the pair of switching leg portions. In this invention, since the position of the switching leg portion with respect to the front end portion of the nozzle member is guided by the guide portion, the movement of the switching nozzle between the first ejection form position and the second ejection form position is stabilized.

[0010] In addition, in the trigger-type liquid ejector of the present invention, the nozzle member includes a cylindrical guide member attached to the front end portion of the ejector body, and a cylindrical nozzle body rotatably externally mounted on the front end portion of the guide member. Communication grooves for switching the communication and interruption between the inside of the ejector body and the ejection holes by rotating the nozzle body relative to the guide member around the nozzle axis are respectively formed in the guide member and the nozzle body. The communication groove communicates with the ejection hole when the switching member is in the first rotation position. The nozzle body and the switching member may be respectively provided with co-rotation portions that engage with each other around the nozzle axis when the switching member in the first rotation position is rotated to the other side around the nozzle axis, so as to integrally rotate the nozzle body and the switching member relative to the guide member. In the present invention, by rotating the switching member together with the nozzle body relative to the guide member to the other side around the nozzle axis, the communication and interruption between the ejection hole and the inside of the ejector body can be switched.

[0011] In addition, in the trigger-type liquid ejector of the present invention, when the switching member rotates from the first rotation position to the other side around the nozzle axis to the third rotation position, the communication with the ejection hole is blocked. At least one of the switching member and the nozzle body and the guide member may be respectively provided with rotation restricting portions for restricting the rotation of the switching member to the other side around the nozzle axis when the switching member is in the third rotation position. In the present invention, since the position of the switching member relative to the guide member around the nozzle axis is positioned at predetermined positions (the first rotation position and the third rotation position), it is possible to easily switch the communication and interruption between the inside of the ejector body and the ejection hole through the communication groove.

Effects of the Invention

[0012] According to the trigger-type liquid ejector of the present invention, the injection pattern of the liquid to be ejected can be switched by rotating a switching member with respect to the nozzle member instead of a switching nozzle located in front of the ejection hole. Therefore, it is possible to avoid touching the liquid that may have been ejected from the ejection hole and adhered to the switching nozzle before.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0014] Hereinafter, an embodiment of the trigger-type liquid ejector according to the present invention will be described with reference to the drawings.

[0015] The trigger-type liquid ejector 1 according to this embodiment is configured to eject the liquid stored in the container body A. As shown in FIG. 1, it includes an ejector main body 11 into which the liquid in the container body A is supplied, a nozzle member 12 attached to the ejector main body 11 and having an ejection hole 12A for ejecting the liquid, a switching nozzle 13, and a cylindrical switching member 14. Note that each component of the trigger-type liquid ejector 1 is a molded product made of synthetic resin unless otherwise specified.

[0016] The ejector main body 11 includes a vertical supply cylinder portion 21 and a trigger mechanism 22. Here, the direction along the central axis O1 of the vertical supply cylinder portion 21 is referred to as the vertical direction. The bottom side of the container body A along the vertical direction is referred to as the lower side, and the opposite side is referred to as the upper side. Also, the side on which the nozzle member 12 is located with respect to the vertical supply cylinder portion 21 when viewed in the vertical direction is referred to as the front side, and the opposite side is referred to as the rear side. Further, the direction orthogonal to the front-rear direction when viewed in the vertical direction is referred to as the left-right direction.

[0017] The vertical supply cylinder portion 21 extends in the vertical direction and is inserted into the mouth portion A1 of the container body A to suck up the liquid in the container body A. The inside of the vertical supply cylinder portion 21 communicates with the inside of a supply pipe 23 that extends to the inside of the container body A.

[0018] The trigger mechanism 22 includes a trigger portion 31 that extends in the vertical direction and is provided in front of the vertical supply cylinder portion 21 so as to be movable rearward in a forward-biased state, a piston 32 that moves back and forth in conjunction with the movement of the trigger portion 31, and a cylinder 33 into which the piston 32 is inserted and whose inside communicates with the inside of the vertical supply cylinder portion 21. The trigger mechanism 22 causes the liquid to flow from the inside of the vertical supply cylinder portion 21 into the injection cylinder portion 34 and then toward the ejection hole 12A by moving the trigger portion 31 rearward.

[0019] An injection cylinder portion 34 is provided in front of the vertical supply cylinder portion 21. The injection cylinder portion 34 causes the liquid in the vertical supply cylinder portion 21 to flow toward the ejection hole 12A. The injection cylinder portion 34 extends forward from the upper end portion of the vertical supply cylinder portion 21. The inside of the injection cylinder portion 34 communicates with the inside of the vertical supply cylinder portion 21. Inside the vertical supply cylinder portion 21, a valve mechanism 35 is provided. When the internal pressure of the cylinder 33 increases as the trigger portion 31 moves rearward, the valve mechanism 35 blocks the communication between the inside of the cylinder 33 and the inside of the container body A, while allowing the inside of the cylinder 33 to communicate with the inside of the injection cylinder portion 34. When a negative pressure is generated inside the cylinder 33 due to the restoration deformation toward the front of the trigger portion 31, the valve mechanism 35 blocks the communication between the inside of the cylinder 33 and the inside of the injection cylinder portion 34, while allowing the inside of the cylinder 33 to communicate with the inside of the container body A.

[0020] As shown in FIGS. 2 to 8, the nozzle member 12 includes a cylindrical guide member 41 and a cylindrical nozzle body 42. These guide member 41 and nozzle body 42 are arranged coaxially with a common axis extending in the front-rear direction. Hereinafter, this common axis is referred to as axis O2. The guide member 41 is located in front of the front opening of the injection cylinder portion 34 and is disposed opposite to the front opening of the injection cylinder portion 34. The guide member 41 has a partition wall 51, a mounting cylinder portion 52 extending rearward from the partition wall 51 and externally fitted to the injection cylinder portion 34, a guide cylinder portion 53 extending forward from the partition wall 51, and a guide shaft portion 54 located radially inside the nozzle diameter direction with respect to the guide cylinder portion 53 and extending forward from the partition wall 51.

[0021] The guide cylinder portion 53 and the guide shaft portion 54 extend forward along a central axis eccentric downward with respect to the axis O2 of the injection cylinder portion 34. Hereinafter, this central axis is referred to as nozzle axis O3, the direction intersecting the nozzle axis O3 is referred to as the nozzle diameter direction, and the direction circulating around the nozzle axis O3 is referred to as the nozzle circumferential direction.

[0022] The partition wall 51 is provided at the connection portion between the front end portion and the rear portion of the guide member 41. A communication hole 51A communicating with the inside of the injection cylinder portion 34 is formed in the partition wall 51. The communication hole 51A is formed in a portion located above the guide shaft portion 54 and inside the guide cylinder portion 53 above the nozzle axis O3. Thereby, the annular space 12B defined between the guide cylinder portion 53 and the guide shaft portion 54 communicates with the inside of the injection cylinder portion 34 through the communication hole 51A.

[0023] On the outer peripheral surface at the rear end portion of the guide cylinder portion 53, a rotation restricting protrusion (rotation restricting portion) 53A protruding upward is formed. The outer edge in the nozzle diameter direction of the rotation restricting protrusion 53A is located inside the nozzle diameter direction of the switching member 14, and the rear edge of the rotation restricting protrusion 53A is continuous with the front surface of the partition wall 51. The guide shaft portion 54 is formed in a toped cylindrical shape with its front end portion closed and opening rearward. Note that the guide shaft portion 54 may have other shapes such as a solid columnar shape. The guide shaft portion 54 does not protrude forward of the guide cylinder portion 53. On the outer peripheral surface of the front end portion of the guide shaft portion 54, a pair of first communication groove portions (communication groove portions) 54A extending in the front-rear direction and opening forward are formed. The first communication groove portions 54A are formed at intervals in the nozzle circumferential direction and are formed on both sides sandwiching the nozzle axis O3 in the nozzle diameter direction.

[0024] The nozzle body 42 is externally mounted rotatably in the nozzle circumferential direction on the front end portion of the guide member 41, and is formed in a toped cylindrical shape with its front wall portion closed and opening rearward. The nozzle body 42 includes a nozzle wall portion 61 having a jet hole 12A formed in the central portion thereof, an outer fitting cylinder portion 62 extending rearward from the nozzle wall portion 61 and fitted rotatably in the nozzle circumferential direction from the front to the guide cylinder portion 53, and a nozzle cylinder portion 63 disposed inside the nozzle diameter direction of the outer fitting cylinder portion 62 and extending rearward from the nozzle wall portion 61 and fitted rotatably in the nozzle circumferential direction from the front to the outer peripheral surface of the guide shaft portion 54.

[0025] The nozzle wall portion 61 has a square shape with rounded corners when viewed in the front-rear direction, and the front surface of the nozzle wall portion 61 is curved so as to bulge slightly forward from the upper and lower end edges toward the middle portion in the vertical direction. Further, on both left and right side surfaces of the nozzle wall portion 61, a pair of switching guide groove portions (guide portions) 61A recessed toward each other inward in the left-right direction are respectively formed. The switching guide groove portions 61A extend in the vertical direction along the side surface of the nozzle wall portion 61. The jet hole 12A is formed in the central portion of the nozzle wall portion 61. Further, on the nozzle wall portion 61, a seal cylinder portion 64 is formed which is located between the externally fitted cylinder portion 62 and the nozzle cylinder portion 63, extends rearward from the nozzle wall portion 61, and fits inside the guide cylinder portion 53.

[0026] The externally fitted cylinder portion 62 is rotatably mounted in the circumferential direction of the nozzle in a state of being prevented from coming off forward with respect to the guide cylinder portion 53. At the rear end portion of the externally fitted cylinder portion 62, a notch portion (rotation restricting portion) 62A that is recessed forward from the rear end edge of the externally fitted cylinder portion 62 is formed. The notch portion 62A extends over approximately 90 degrees in the circumferential direction of the nozzle. One circumferential edge portion (the edge portion in the counterclockwise direction in the circumferential direction of the nozzle when viewed from the front in FIG. 7) of the externally fitted cylinder portion 62 that defines the notch portion 62A abuts or is close to one side surface (the side surface in the clockwise direction forward in the circumferential direction of the nozzle when viewed from the front in FIG. 7) of the rotation restricting protrusion 53A. Further, at the front end portion of the externally fitted cylinder portion 62, a rotation guide groove portion 62B that is recessed inward in the nozzle diameter direction is formed. The rotation guide groove portion 62B has a C shape that opens to the left when viewed from the front in FIG. 5. By this rotation guide groove portion 62B, a co-rotation protrusion portion (co-rotation portion) 62C is defined at the front end portion of the externally fitted cylinder portion 62.

[0027] The nozzle cylinder portion 63 extends rearward from the first communication groove portion 54A formed on the guide shaft portion 54. On the inner peripheral surface of the nozzle cylinder portion 63 on the rear end portion side, a pair of second communication groove portions (communication groove portions) 63A that extend linearly in the front-rear direction and open rearward are formed. The second communication groove portions 63A are formed at intervals in the circumferential direction of the nozzle and are formed on both sides sandwiching the nozzle axis O3 in the nozzle diameter direction. The pair of second communication groove portions 63A can be individually aligned in the circumferential direction with the pair of first communication groove portions 54A. Note that the number of the first and second communication groove portions 54A, 63A is not limited to a pair (two), and may be other numbers such as one or three or more, and the first and second communication groove portions 54A, 63A do not need to be the same number.

[0028] The switching nozzle 13 has a switching main body portion 71 in the shape of a rectangular plate that is long in the left - right direction, and a pair of switching leg portions 72 that extend rearward from both the left and right end portions of the switching main body portion 71 respectively. The rear surface of the switching main body portion 71 is curved so as to bulge slightly forward as it goes from the upper and lower end edges toward the middle portion in the vertical direction. The curved shape of the rear surface of the switching main body portion 71 is the same as the curved shape of the front surface of the nozzle wall portion 61. Also, a mesh portion (jet form changing portion) 71A is formed in the middle portion of the switching main body portion 71 in the left - right direction. The mesh portion 71A is formed by, for example, perforating the switching main body portion 71.

[0029] On the inner surface of the switching leg portion 72 in the left - right direction, there is formed a switching guide protrusion (guide portion) 72A that protrudes inward in the left - right direction and is arranged to be vertically movable along the switching guide groove portion 61A within the switching guide groove portion 61A. Thereby, the switching nozzle 13 is guided to move in the vertical direction along the switching guide groove portion 61A. Note that the switching nozzle 13 can move vertically with respect to the nozzle wall portion 61 between a first jet ejection form position where the mesh portion 71A is located in front of the ejection hole 12A as shown in FIGS. 3 and 5, and a second jet ejection form position where the vertical position of the switching main body portion 71 is shifted upward from the position of the ejection hole 12A as shown in FIGS. 4 and 6.

[0030] The switching member 14 has a cylindrical switching cylinder portion 81 that forms a square cylinder with rounded corners when viewed in the front - rear direction, and a first coupling portion (coupling portion, co - rotating portion) 82 and a second coupling portion (coupling portion) 83 that protrude inward in the nozzle diameter direction from a pair of corner portions that sandwich the nozzle axis O3 in the nozzle diameter direction of the cylindrical switching cylinder portion 81 with rounded corners. The position of the front edge of the switching cylinder portion 81 in the front - rear direction is the same as or behind the front surface of the nozzle wall portion 61. The first and second coupling portions 82, 83 protrude inward in the nozzle diameter direction from a pair of corner portions that sandwich the nozzle axis O3 in the nozzle diameter direction of the cylindrical switching cylinder portion 81 with rounded corners.

[0031] The first connection part 82 is formed at the lower left corner part of the switching cylinder part 81. The inner edge of the first connection part 82 has an arc shape along the outer peripheral surface of the externally fitted cylinder part 62. The inner end part of the first connection part 82 in the nozzle diameter direction has entered into the rotation guide groove part 62B. The edge part of the first connection part 82 in the clockwise direction in the nozzle circumferential direction when viewed from the front abuts or is close to the edge part of the co-rotating protrusion part 62C in the counterclockwise direction in the nozzle circumferential direction when viewed from the front. Therefore, the first connection part 82, and thus the switching cylinder part 81, is restricted from rotating in the clockwise direction in the nozzle circumferential direction when viewed from the front with respect to the externally fitted cylinder part 62. Further, this edge part of the first connection part 82 abuts or is close to the lower end edge of the left switching leg part 72 among the pair of switching leg parts 72.

[0032] The second connection part 83 is formed at the upper right corner part of the switching cylinder part 81. Similar to the first connection part 82, the inner edge of the second connection part 83 has an arc shape along the outer peripheral surface of the externally fitted cylinder part 62. The inner end part of the second connection part 83 in the nozzle diameter direction has entered into the rotation guide groove part 62B. The edge part of the second connection part 83 in the clockwise direction in the nozzle circumferential direction when viewed from the front abuts or is close to the upper end edge of the right switching leg part 72 among the pair of switching leg parts 72. Thereby, the first and second connection parts 82, 83 define the vertical position of the switching nozzle 13.

[0033] Subsequently, a method of using the trigger type liquid ejector 1 having the above-described configuration will be described. It is assumed that the inside of each part of the ejector main body 11 is filled with liquid by operating the trigger part 31 a plurality of times. When the trigger part 31 is pulled backward against the forward biasing force, the piston 32 retreats as the trigger part 31 moves backward. Therefore, the liquid in the cylinder 33 is introduced into the vertical supply cylinder part 21. The liquid introduced into the vertical supply cylinder part 21 is not supplied into the container body A while operating the valve mechanism 35, but after being supplied into the injection cylinder part 34, it reaches the ejection hole 12A through the communication hole 51A, the front end part of the guide cylinder part 53, the second communication groove part 63A, and the first communication groove part 54A, and is ejected from the ejection hole 12A.

[0034] Since the switching nozzle 13 is in the first injection mode position and the mesh portion 71A is located in front of the ejection hole 12A, the liquid ejected from the ejection hole 12A collides with the mesh portion 71A of the switching nozzle 13 and foams. As a result, the liquid passing through the mesh portion 71A is ejected from the mesh portion 71A in a foamy state. After the liquid is ejected, when the trigger portion 31 is released, the trigger portion 31 moves forward and returns, and accordingly, the piston 32 moves forward. Therefore, a negative pressure is generated in the cylinder 33, and due to this negative pressure, the valve mechanism 35 operates, and the liquid in the container body A is sucked up into the supply pipe 23 and the vertical supply cylinder portion 21, and then is introduced into the cylinder 33 instead of being introduced into the injection cylinder portion 34.

[0035] As shown in FIGS. 4 and 6, when the switching member 14 is rotated 90 degrees counterclockwise in the nozzle circumferential direction when viewed from the front, the first engagement portion 82 of the switching member 14 abuts against the lower end edge of the right switching leg portion 72 of the pair of switching leg portions 72 of the switching nozzle 13 and pushes the switching leg portion 72 upward. At the same time that the first engagement portion 82 pushes the right switching leg portion 72 upward, the second engagement portion 83 abuts against or approaches the upper end edge of the left switching leg portion 72 of the switching nozzle 13 and abuts against the edge portion in the clockwise direction in the nozzle circumferential direction when viewed from the front of the co-rotation protrusion 62C defined by the rotation guide groove portion 62B. As a result, the position of the switching body portion 71 of the switching nozzle 13 is shifted upward with respect to the ejection hole 12A, and the switching nozzle 13 moves from the first ejection mode position where the mesh portion 71A is located in front of the ejection hole 12A to the second ejection mode position where the mesh portion 71A is displaced upward with respect to the ejection hole 12A. When the trigger portion 31 is pulled backward against the forward biasing force in this state, the liquid in the injection cylinder portion 34 is ejected from the ejection hole 12A, but the liquid ejected from the ejection hole 12A is ejected in a mist state without colliding with the switching body portion 71 of the switching nozzle 13.

[0036] Subsequently, as shown in FIGS. 7 and 8, when the switching member 14 in the first switching position is rotated 90 degrees clockwise about the nozzle axis O3 when viewed from the front, since the first engaging portion 82 of the switching member 14 abuts on the co-rotating projection 62C, the externally fitted cylinder portion 62 rotates 90 degrees clockwise in the circumferential direction of the nozzle when viewed from the front with respect to the nozzle cylinder portion 63 together with the switching member 14. The nozzle cylinder portion 63, that is, the nozzle member 12, rotates clockwise about the nozzle axis O3 with respect to the guide shaft portion 54, that is, the guide member 41, shifting the position in the circumferential direction of the nozzle of the second communication groove portion 63A of the nozzle cylinder portion 63 and the position in the circumferential direction of the nozzle of the first communication groove portion 54A of the guide shaft portion 54, and blocking the communication between the first communication groove portion 54A and the second communication groove portion 63A. Note that the other circumferential edge portion of the externally fitted cylinder portion 62 that defines the notch portion 62A (the edge portion in the clockwise direction in the circumferential direction of the nozzle when viewed from the front in FIG. 8) abuts or is close to the other side surface of the rotation restricting projection 53A (the side surface in the counterclockwise direction and forward in the circumferential direction of the nozzle when viewed from the front in FIG. 8). Thereby, further rotation of the switching member 14 and the nozzle member 12 counterclockwise in the circumferential direction of the nozzle with respect to the guide member 41 is restricted. In this way, the switching member 14 moves from the first rotation position to the third rotation position. As described above, the liquid is ejected from the trigger-type liquid ejector 1.

[0037] According to the trigger-type liquid ejector 1 according to the present embodiment configured as described above, the ejection form of the ejected liquid can be switched by rotating the switching member 14 with respect to the nozzle member 12 without operating the switching nozzle 13 located in front of the ejection hole 12A. Thus, it is possible to more surely avoid touching the liquid that has been ejected previously and may adhere to the switching nozzle 13. Here, in conjunction with rotating the cylindrical switching cylinder portion 81 in the circumferential direction of the nozzle, the first and second engaging portions 82 and 83 move the pair of switching leg portions 72, thereby switching the switching nozzle 13 between the first ejection form position and the second ejection form position as the switching cylinder portion 81 rotates.

[0038] In addition, when the switching nozzle 13 moves between the first ejection form position and the second ejection form position, the switching guide protrusion 72A of the switching leg portion 72 is guided along the switching guide groove portion 61A of the nozzle wall portion 61, so that the movement of the switching nozzle 13 between the first ejection form position and the second ejection form position is stabilized. Furthermore, since the nozzle body 42 is rotatable in the nozzle circumferential direction with respect to the guide member 41, by switching the communication and interruption between the ejection hole 12A and the communication hole 51A through the first and second communication groove portions 54A and 63A, it is possible to suppress the unintentional ejection of liquid from the ejection hole 12A. Here, since the positioning of the switching member 14 in the nozzle circumferential direction with respect to the guide member 41 is performed, the switching of the communication and interruption between the ejection hole 12A and the communication hole 51A through the first and second communication groove portions 54A and 63A can be easily performed.

[0039] Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the configuration of the ejector body only needs to be able to eject liquid, and may have a configuration that enables continuous ejection of liquid by having a storage cylinder, for example. The switching nozzle has a mesh portion as an ejection form changing portion, but it only needs to be able to change the ejection form of the liquid ejected from the ejection hole, and may have other configurations other than the mesh portion. Further, the mesh portion is formed by perforating the central portion of the switching main body portion, but may also be formed by forming an opening in the central portion of the switching main body portion and providing a net covering this opening. Furthermore, the switching nozzle may have a plurality of ejection form changing portions corresponding to a plurality of ejection form positions, such as having different bubble ejection forms. The switching nozzle may have a configuration other than the pair of switching leg portions as long as it is positioned at a plurality of ejection form positions as the switching member rotates in the nozzle circumferential direction. The switching member has a cylindrical switching cylinder portion, but it does not have to be cylindrical as long as it can rotate in the nozzle circumferential direction between the first rotational position and the second rotational position with respect to the nozzle member. Further, the switching member has a pair of linking portions, but it may have other configurations as long as it can move the switching nozzle between a plurality of ejection form positions in conjunction with the rotation in the nozzle circumferential direction. Rotation restricting portions are respectively provided on the switching member and the guide member to switch the communication and interruption between the ejection hole and the communication hole, but the rotation restricting portions do not have to be provided. The nozzle member includes a guide member and a nozzle body that can rotate in the nozzle circumferential direction with respect to the guide member, but the nozzle body may not be rotatable in the nozzle circumferential direction with respect to the guide member.

[0040] [Appended Claim 1] An ejector body mounted on a container body containing a liquid, A cylindrical nozzle member mounted on the front end portion of the ejector body and having an ejection hole for ejecting the liquid forward, A switching nozzle mounted on the front end portion of the nozzle member, A switching member externally mounted on the front end portion of the nozzle member so as to be rotatable about the nozzle axis of the nozzle member with respect to the nozzle member, Comprising: The switching nozzle is located in front of the ejection hole and has an ejection form changing portion that changes the ejection form of the liquid by allowing the liquid ejected from the ejection hole to pass therethrough. The ejection form changing portion is movable with respect to the nozzle member between a first ejection form position where the ejection form changing portion is located in front of the ejection hole and a second ejection form position where the ejection form changing portion is displaced from in front of the ejection hole, The switching member has a linking portion that links to the switching nozzle, and in conjunction with the rotational movement of the switching member with respect to the nozzle member from a first rotational position to a second rotational position along the nozzle axis, moves the switching nozzle from the first ejection form position to the second ejection form position. A trigger type liquid ejector characterized by this. [Appended Claim 2] The switching nozzle has a switching main body portion provided with the ejection form changing portion, and a pair of switching leg portions extending rearward from the switching main body portion and engaging with the linking portion. The switching member has a switching cylinder portion surrounding the front end portion of the nozzle member and the switching leg portions. The linking portion projects inward in the nozzle diameter direction from the inner peripheral surface of the switching cylinder portion. The trigger-type liquid ejector according to claim 1, wherein when the switching cylinder portion rotates between the first rotation position and the second rotation position, the linking portion engages with the switching leg portions to move the switching nozzle between the first ejection form position and the second ejection form position. [Additional item 3] The trigger-type liquid ejector according to claim 2, wherein guide portions for guiding the movement of the switching nozzle between the first ejection form position and the second ejection form position with respect to the nozzle member are respectively formed on the front end portion of the nozzle member and the pair of switching leg portions. [Additional item 4] The nozzle member has a cylindrical guide member mounted on the front end portion of the ejector main body, and a cylindrical nozzle main body rotatably externally mounted on the front end portion of the guide member. Communication groove portions for switching the communication and interruption between the inside of the ejector main body and the ejection holes by rotating the nozzle main body with respect to the guide member around the nozzle axis are respectively formed in the guide member and the nozzle main body. The communication groove portion communicates with the ejection holes when the switching member is in the first rotation position. The trigger-type liquid ejector according to any one of claims 1 to 3, wherein the switching member and the nozzle main body are respectively provided with co-rotating portions that engage with each other around the nozzle axis when the switching member in the first rotation position is rotated to the other side around the nozzle axis, so as to integrally rotate the nozzle main body and the switching member with respect to the guide member. [Additional item 5] When the switching member rotates from the first rotational position to the third rotational position on the other side around the nozzle axis, the communication with the ejection hole is blocked in the communication groove portion. The trigger-type liquid ejector according to claim 4, wherein at least one of the switching member and the nozzle body and the guide member are each provided with a rotation restricting portion that restricts rotation of the switching member to the other side around the nozzle axis when the switching member is in the third rotational position.

Industrial Applicability

[0041] According to the present invention, industrial applicability is recognized in providing a trigger-type liquid ejector capable of switching the ejection form of the liquid from the ejection hole without directly operating the switching nozzle.

Explanation of Reference Numerals

[0042] 1 Trigger-type liquid ejector, 11 Ejector body, 12 Nozzle member, 12A Ejection hole, 13 Switching nozzle, 14 Switching member, 21 Vertical supply cylinder portion, 41 Guide member, 42 Nozzle body, 53A Rotation restricting protrusion (rotation restricting portion), 54A First communication groove portion (communication groove portion), 61A Switching guide groove portion (guide portion), 62A Notch portion (rotation restricting portion), 62C Co-rotation protrusion (co-rotation portion), 63A Second communication groove portion (communication groove portion), 71 Switching main body portion, 71A Mesh portion (ejection form changing portion), 72 Switching leg portion, 72A Switching guide protrusion (guide portion), 81 Switching cylinder portion, 82 First connection portion (connection portion, co-rotation portion), 83 Second connection portion (connection portion), A Container body, O3 Nozzle axis

Claims

1. An ejector body mounted on a container body containing a liquid, a cylindrical nozzle member mounted on the front end portion of the ejector body and having an ejection hole for ejecting the liquid forward, a switching nozzle mounted on the front end portion of the nozzle member, a switching member externally mounted on the front end portion of the nozzle member so as to be rotatable about the nozzle axis of the nozzle member with respect to the nozzle member, comprising: the switching nozzle has an ejection form changing portion located in front of the ejection hole and changing the ejection form of the liquid by allowing the liquid ejected from the ejection hole to pass therethrough, and the ejection form changing portion is movable with respect to the nozzle member between a first ejection form position located in front of the ejection hole and a second ejection form position where the ejection form changing portion is displaced from in front of the ejection hole, the switching member has an engaging portion that engages with the switching nozzle, and moves the switching nozzle from the first ejection form position to the second ejection form position in conjunction with a rotational movement of the nozzle member with respect to the nozzle member from a first rotational position along the nozzle axis to a second rotational position. A trigger-type liquid ejector characterized by that.

2. the switching nozzle has a switching main body portion provided with the ejection form changing portion, and a pair of switching leg portions extending rearward from the switching main body portion and engaging with the engaging portion, the switching member has a switching cylinder portion surrounding the front end portion of the nozzle member and the switching leg portions, the engaging portion projects radially inward in the nozzle diameter direction from the inner peripheral surface of the switching cylinder portion, The trigger-type liquid ejector according to claim 1, wherein when the switching cylinder portion rotates between the first rotational position and the second rotational position, the engaging portion engages with the switching leg portion to move the switching nozzle between the first ejection form position and the second ejection form position.

3. Guiding portions for guiding the movement of the switching nozzle with respect to the nozzle member between the first ejection form position and the second ejection form position are respectively formed on the front end portion of the nozzle member and the pair of switching leg portions. The trigger-type liquid ejector according to claim 2, characterized by that.

4. the nozzle member a cylindrical guide member mounted on the front end portion of the ejector body, a cylindrical nozzle body rotatably externally mounted on the front end portion of the guide member, having: In the guide member and the nozzle body, communication grooves are respectively formed for switching the communication and interruption between the inside of the ejector body and the ejection hole by rotating the nozzle body relative to the guide member around the nozzle axis. The communication groove communicates with the ejection hole when the switching member is in the first rotational position. The trigger-type liquid ejector according to claim 1, wherein the nozzle body and the switching member are respectively provided with co-rotation portions that engage with each other around the nozzle axis when the switching member in the first rotational position is rotated to the other side around the nozzle axis, so that the nozzle body and the switching member are integrally rotated relative to the guide member. **Claim 5** The communication groove is interrupted from communicating with the ejection hole when the switching member rotates from the first rotational position to the third rotational position on the other side around the nozzle axis. The trigger-type liquid ejector according to claim 4, wherein at least one of the switching member and the nozzle body and the guide member are respectively provided with rotation restricting portions for restricting the rotation of the switching member to the other side around the nozzle axis when the switching member is in the third rotational position.

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