JP6681276B2 - Liquid ejector - Google Patents

Description

  The present invention relates to a liquid ejector.

Conventionally, there has been known a liquid ejector capable of ejecting the content liquid in a desired manner by switching the ejection mode of the content liquid.
For example, as shown in Patent Document 1 below, a double-cylindrical support member that has an outer cylinder portion and an inner cylinder portion and is combined with the tip of the discharge nozzle, and is rotatably arranged inside the inner cylinder portion. The rotary member is provided with a cover member that closes the opening of the support member, and the flow channel for the stream and the flow channel for the spray are formed in parallel to each other in the rotary member. There is known a liquid ejector in which a stream outflow hole communicating with a passage and a spray outflow hole communicating with a spray flow passage are formed, and a discharge port is formed in a cover member.

  In this liquid ejector, it is possible to selectively connect the stream outflow hole or the spray outflow hole to the discharge port by rotating the rotating member. Thereby, for example, the content liquid can be linearly jetted by connecting the stream outflow hole and the discharge port, and the content liquid can be jetted in a mist state by connecting the spray outflow hole and the discharge port. be able to.

JP, 9-85142, A

  However, in the conventional liquid ejector, in order to eject the content liquid in two injection modes of a straight line or a mist state, a stream channel and a stream outflow hole, a spray channel and a spray outflow hole, Are formed separately. Therefore, the configuration is likely to be complicated, and for example, the cost is high and the workability of the assembling work is likely to be deteriorated.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a liquid ejector capable of changing the ejection mode of the content liquid with a simple configuration.

(1) A liquid ejector according to the present invention is mounted on a container body containing a content liquid, has an ejector main body having an ejection cylinder portion for ejecting the content liquid, a guide shaft portion, and the ejection cylinder portion. A guide member attached to the tip of the nozzle, a nozzle hole through which the content liquid supplied from the injection cylinder is jetted, and a nozzle wall arranged to face the tip of the guide shaft, A nozzle member that is provided so as to project from the nozzle wall portion toward the guide member side, and has a nozzle tube portion that is fitted to the outer peripheral surface of the guide shaft portion so as to be movable in the axial direction of the guide shaft portion, An operating member having an enclosing tube portion surrounding the nozzle member from the outside, and an operating tube portion connected to the enclosing tube portion and rotatably attached to the guide member around the axis. , the outer peripheral surface of the guide shaft and of the nozzle tube portion Between the surface, the contact grooves content liquid is supplied from the injection tube portion is formed, the distal end surface of the guide shaft, or positioned inside of the nozzle tubular portion of the inner surface of the nozzle wall in part, the concave spin chamber for swirling the liquid content in the axis line communicated with said nozzle hole, extending outwardly from said spin chamber, spin groove communicating with said spin chamber and said connecting groove Is formed, and the surrounding cylinder portion is rotatable together with the operation cylinder portion around the axis, and the surrounding cylinder portion has a spiral extending in the axial direction toward the circumferential direction. A groove is formed, the nozzle member is formed with a guide protrusion protruding from the nozzle member toward the surrounding cylinder portion and slidably fitted in the spiral groove, and the guide protrusion is the spiral. While penetrating the groove, By engaging in a front and rear groove formed in the member so as to extend in the axial direction, the member is immovable in the circumferential direction and movable in the axial direction, and with the movement of the nozzle member in the axial direction. Thus, the distance between the tip end surface of the guide shaft portion and the nozzle wall portion along the axial direction changes, and the swirling force of the content liquid in the spin chamber changes.

  According to the liquid ejector according to the present invention, by rotating the operating member around the axis, the surrounding cylinder portion in which the spiral groove is formed can be rotated around the axis. Can be moved relative to. At this time, since the nozzle member having the guide projection is movable in the axial direction of the guide shaft portion, the guide projection relatively moves in the axial direction while sliding in the spiral groove. That is, the spiral groove and the guide protrusion can convert the rotational movement of the operation member into the linear movement movement of the nozzle member, and the nozzle member can be moved in the axial direction. Therefore, by rotating the operation member, the nozzle member can be moved in the axial direction, and the interval between the nozzle wall portion in which the nozzle hole is formed and the tip end surface of the guide shaft portion along the axial direction can be changed. it can.

Here, at the time of jetting the content liquid, the content liquid is supplied from the inside of the injection cylinder portion into the spin groove through the communication groove and also into the spin chamber through the spin groove. As a result, the content liquid can be swirled in the spin chamber, and the spin-loaded content liquid can be sprayed from the nozzle hole to the outside in the form of mist.
At the time of this injection, for example, when the nozzle member is arranged at the position closest to the guide member side, the nozzle wall portion and the tip end surface of the guide shaft portion are swung in the spin chamber because the distance between them is narrow. The content liquid can be jetted from the nozzle hole while maintaining a state in which the spin is properly applied. Therefore, the content liquid can be ejected at a large ejection angle (spread angle), and mist-like ejection with a wide diffusion state can be performed.

  On the other hand, when the operation member is rotated to move the nozzle member to a position away from the guide member, the distance between the nozzle wall portion and the tip end surface of the guide shaft portion increases, so that the nozzle wall portion The internal volume of the internal space (including the spin chamber) defined between the tip surface of the guide shaft portion and the tip surface increases. Therefore, the swirling force of the content liquid in the spin chamber can be reduced (the degree of spin is reduced), and the content liquid can be ejected at a smaller ejection angle than in the above case. Therefore, it is possible to perform mist-like injection in which the diffusion state is narrow, or to perform injection that is even in a straight line by further reducing the injection angle.

  In this way, by rotating the operation member to move the nozzle member in the axial direction, it is possible to change the ejection mode of the content liquid. In particular, since the injection mode can be changed by a simple operation of simply rotating the operation member, it is easy to use and the operability can be improved. Moreover, since the spin chamber, the spin groove, and the communication groove can be commonly used regardless of the ejection mode, the configuration can be simplified. Therefore, the cost can be reduced, and the assembling work can be efficiently performed.

(2) A support body fitted inside the tip end portion of the injection cylinder portion is provided, and the guide member is provided with a fitting cylinder portion fitted to the support body so as to be rotatable around the axis. Between the outer peripheral surface of the body and the inner peripheral surface of the fitting tubular portion, the communication between the inside of the communication groove and the inside of the injection tubular portion, and the interruption thereof, are caused by the rotation of the guide member with respect to the support body. A switching groove for switching may be formed.

  In this case, by rotating the guide member around the axis, the switching groove switches communication between the inside of the communication groove and the inside of the injection cylinder part and cuts off the same, so that, for example, communication between the inside of the communication groove and the inside of the injection cylinder part is cut off. It can be stored in the stored state.

  According to the liquid ejector according to the present invention, it is possible to change the ejection mode of the content liquid with a simple configuration, for example, ejecting the content liquid in a mist state while changing the diffusion state, or a linearly equal ejection. And so on. Therefore, for example, the content liquid can be ejected in an optimal ejection mode according to the object to which the content liquid is ejected, the place of use, and the like, which is easy to use.

It is a longitudinal cross-sectional view showing an embodiment of a trigger type liquid ejector which is an ejector according to the present invention. It is the longitudinal cross-sectional view which expanded the front-end | tip part periphery of the injection cylinder part shown in FIG. It is a longitudinal cross-sectional view of the support body shown in FIG. FIG. 3 is a vertical sectional view taken along the line AA shown in FIG. 2. FIG. 5 is a vertical cross-sectional view showing a state in which the guide member is rotated from the state shown in FIG. 4 to disconnect the communication between the first switching groove and the second switching groove. FIG. 3 is a vertical sectional view taken along line BB shown in FIG. 2. It is the front view which looked at the front-end | tip part periphery of the injection cylinder part shown in FIG. 2 from the front side. It is a longitudinal cross-sectional view of the surrounding cylinder part of the operation member shown in FIG. It is a longitudinal cross-sectional view in the case of rotating the surrounding cylinder portion shown in FIG. 8 by 90 degrees around the axis. It is a front view which shows the state which rotated the operating member around the axis line from the state shown in FIG. It is a longitudinal cross-sectional view which shows the state which moved the nozzle member forward by rotation of an operation member from the state shown in FIG.

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

As shown in FIG. 1, a trigger type liquid ejector 1 of the present embodiment is attached to a container body A containing a content liquid via a mounting cap 3, and an injection cylinder portion for ejecting the content liquid forward. 4, the ejector main body 2 having a support body 4, a support body 5 fitted inside the front end portion (tip portion) of the injection cylinder portion 4, and a guide attached to the front end portion of the injection cylinder portion 4 via the support body 5. A member 6 is provided, a nozzle member 8 movably attached to the guide member 6 and having a nozzle hole 7 for ejecting a content liquid, and an operation member 9 rotatably attached to the guide member 6. .
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 suction cylinder portion 10 described later is the axis O1, the container body A side along the axis O1 is the lower side, and the opposite side is the upper side. In addition, one of the two directions orthogonal to the axis O1 is referred to as a front-back direction L1 and the other direction is referred to as a left-right direction L2.

The ejector main body 2 extends in the up-down direction and sucks the content liquid in the container body A, and extends from the suction cylinder portion 10 along the front-rear direction L1. 10, a trigger mechanism 12 having the above-mentioned injection cylinder part 4 communicating with the inside of the injection cylinder 10, a trigger part 11 extending downward from the injection cylinder part 4 and swingably arranged rearward in a biased state. The cylinder unit 10, the injection cylinder unit 4, and a reciprocating pump 25, which will be described later, are provided with a cover body 13 that covers from above, from the rear, and from the left and right.
In this embodiment, in the front-rear direction L1, the direction in which the injection cylinder portion 4 extends from the suction cylinder portion 10 is referred to as the front side or the front side, and the opposite direction is referred to as the rear side or the rear side.

  The suction cylinder portion 10 includes an outer cylinder 15 having a cylindrical shape with a top, an inner cylinder 16 arranged inside the outer cylinder 15, and a pipe unit 17 arranged inside the inner cylinder 16. It is arranged in a state of being eccentric to the rear side with respect to the central axis (container axis) of A.

  The outer cylinder 15 is formed in a two-stage cylindrical shape having a large diameter portion 15a and a small diameter portion 15b arranged above the large diameter portion 15a and having an outer diameter smaller than that of the large diameter portion 15a. The large-diameter portion 15a of the outer cylinder 15 is formed with a flange portion 15c which projects outward and is arranged on the opening edge of the mouth portion of the container body A with a packing 18 interposed therebetween. 3 is attached.

The inner cylinder 16 has a two-stage tubular shape having a large diameter portion 16a arranged inside the large diameter portion 15a of the outer cylinder 15 and a small diameter portion 16b arranged inside the small diameter portion 16b of the outer cylinder 15. Has been formed.
The pipe unit 17 has a lower end opening toward the bottom side of the container A, and includes a pipe 19 fitted inside the small diameter portion 16b of the inner cylinder 16.
As a result, the inside of the inner cylinder 16 communicates with the inside of the container body A through the pipe 19 and the inside of the injection cylinder portion 4.

A first suction valve 20 is arranged inside the inner cylinder 16, and a second suction valve 21 is arranged in a portion located below the first suction valve 20.
In the inner cylinder 16, the first suction valve 20 connects and disconnects a space located above the first suction valve 20 and a space located below the first suction valve 20. That is, the first suction valve 20 opens when the inside of the cylinder 27 of the reciprocating pump 25 described later is pressurized so that the inside of the inner cylinder 16 and the inside of the injection cylinder 4 are communicated with each other, and the inside of the cylinder 27 is depressurized. At times, the valve is closed to cut off the communication between the inner cylinder 16 and the injection cylinder part 4.

  The second suction valve 21 connects and disconnects the space located between the first suction valve 20 and the second suction valve 21 and the space located below the second suction valve 21 in the inner cylinder 16. To do. That is, the second suction valve 21 is closed when the cylinder 27 of the reciprocating pump 25 is pressurized to block the communication between the inner cylinder 16 and the pipe 19, and when the cylinder 27 is depressurized. The valve is opened to connect the inside of the inner cylinder 16 and the inside of the pipe 19.

  The trigger mechanism 12 includes a reciprocating pump 25 whose inside is pressurized and depressurized as the trigger portion 11 swings, and an elastic member 26 which biases the trigger portion 11 forward.

  The reciprocating pump 25 is assembled on the front side of the outer cylinder 15 in the suction cylinder section 10, and has a cylinder 27 that opens toward the front, and a plunger 28 that is assembled inside the cylinder 27 so as to be slidable back and forth from the front side. , Are provided.

The inside of the cylinder 27 is formed with a first vent hole 29 formed in the cylinder 27, a second vent hole 30 formed in the outer cylinder 15 of the suction cylinder portion 10, and an inner cylinder 16 of the suction cylinder portion 10. It is communicated with the inside of the mounting cap 3 through the formed third ventilation hole 31. Further, the inside of the cylinder 27 is also communicated with the space between the first suction valve 20 and the second suction valve 21 in the inner cylinder 16 through the through hole 32 that continuously penetrates the outer cylinder 15 and the inner cylinder 16. are doing.
A front end portion of the plunger 28 is connected to the trigger portion 11 via a connecting shaft 33. As a result, the plunger 28 moves back and forth with respect to the cylinder 27 as the trigger portion 11 swings, so that the inside of the cylinder 27 is pressurized and depressurized.

  It should be noted that the plunger 28 closes the first vent hole 29 when the trigger portion 11 is at the frontmost swing position. Then, when the plunger 28 is moved rearward by a predetermined amount due to the backward swing of the trigger portion 11, the plunger 28 opens the first vent hole 29. Accordingly, the inside of the container body A communicates with the outside through the third ventilation hole 31, the second ventilation hole 30, and the first ventilation hole 29, so that air can be introduced into the container body A.

At the upper end of the trigger portion 11, a rotary shaft portion 36 rotatably supported by a bearing portion 35 integrally formed with the injection cylinder portion 4 is formed. As a result, the trigger portion 11 is swingable in the front-rear direction L1 about the rotary shaft portion 36.
One pair of elastic members 26 are provided so as to sandwich the injection cylinder 4 from the left-right direction L2 with one end fixed to the injection cylinder 4 and the other end fixed to the trigger 11. It urges forward.

As shown in FIGS. 1 and 2, the injection cylinder portion 4 extends in the front-rear direction L1 and opens forward. The injection cylinder 4 of the illustrated example includes a base cylinder 40 that extends forward from the upper end of the outer cylinder 15 of the suction cylinder 10 along a central axis (hereinafter, referred to as axis O2), and a base cylinder 40. The front end portion of the end tubular portion 40 is provided with a cylindrical tip tubular portion 41 that extends further forward along a central axis (hereinafter, referred to as an axis O3).
In the present embodiment, in a plan view when viewed from the direction of the axis O3, the direction orthogonal to the axis O3 is called the radial direction, and the direction around the axis O3 is called the circumferential direction.

  The axis O3 of the distal end tubular portion 41 is eccentric to the upper side of the axis O2 of the proximal end tubular portion 40. As a result, the injection cylinder portion 4 has a stepped shape in which the distal end cylinder portion 41 is displaced upward from the proximal end cylinder portion 40. Therefore, a connecting wall portion 42 facing forward is formed at a connecting portion between the distal end tubular portion 41 and the proximal end tubular portion 40.

A partition wall 43 protruding upward is formed on the distal end tubular portion 41, and a retaining projection 44 is projected outward in the radial direction. The retaining projections 44 are arranged in front of the partition wall 43 and are formed in plural at intervals in the circumferential direction.
The cover body 13 is assembled in a state of being arranged on the upper edge of the partition wall 43.

  As shown in FIGS. 2 and 3, the support 5 is fitted inside the distal end tube portion 41, which is the distal end portion of the injection cylinder portion 4, and is arranged coaxially with the axis O3. The support body 5 includes a shaft portion 50 extending along the axis O3, and a protruding portion 51 protruding radially outward from a rear end portion of the shaft portion 50, and the injection cylinder portion 4 and the guide member 6. Are formed separately.

The shaft portion 50 is formed in a topped cylinder shape having a front end portion closed and an opening rearward. However, the shape of the shaft portion 50 is not limited to the top-end cylindrical shape, and may be formed in a solid cylindrical shape, for example.
The overhanging portion 51 is fitted inside the distal end tubular portion 41 while being in contact with the connecting wall portion 42 from the front. As a result, the support body 5 is positioned inside the distal end tubular portion 41 in the front-rear direction L1 and is fitted in a state in which it is prevented from rotating.

  As shown in FIGS. 3 and 4, the outer peripheral surface of the shaft portion 50 is provided with a first switching groove 52 that extends linearly along the direction of the axis O3 and opens forward. In the illustrated example, two first switching grooves 52 are formed at equal intervals in the circumferential direction. However, the number of the first switching grooves 52 is not limited to two, and one or three or more may be formed.

As shown in FIGS. 2 and 3, the overhang portion 51 is formed with a communication hole 53 that penetrates the overhang portion 51 in the front-rear direction L1. In the illustrated example, a plurality of communication holes 53 are arranged at intervals in the circumferential direction, and are formed at positions displaced in the circumferential direction with respect to the first switching groove 52 when viewed from the direction of the axis O3.
A communication groove 54 is formed in the rear end surface of the shaft portion 50, that is, in the opening edge on the rear end side so as to radially communicate the plurality of communication holes 53 formed in the overhang portion 51. In the illustrated example, the communication grooves 54 are formed so as to be parallel to each other in the left-right direction L2 with the central axis O3 interposed therebetween.

  Since the support 5 is configured as described above, the content liquid supplied from the inside of the proximal end tubular portion 40 is passed through the plurality of communication holes 53 while utilizing the communication groove 54, and the outer peripheral surface of the shaft portion 50 and the tip end. It can be introduced into the first annular space 55 between the inner peripheral surface of the tubular portion 41.

  As shown in FIGS. 1 and 2, the guide member 6 is arranged in front of the support body 5 coaxially with the axis O3, and extends inside the distal end tubular portion 41 and the guide shaft portion 60 extending along the front-rear direction L1. An inner tubular portion 61 that is rotatably fitted around the axis O3, an annular wall portion 62 that radially connects the rear end portion of the inner tubular portion 61 and the rear end portion of the guide shaft portion 60, and the annular wall portion 62. And a fitting tubular portion 63 that is fitted to the outer peripheral surface of the shaft portion 50 so as to be rotatable around the axis O3.

The annular wall portion 62 is arranged inside the distal end tubular portion 41 with a gap provided between the annular wall portion 62 and the distal end surface of the shaft portion 50. The fitting tubular portion 63 is arranged inside the tip tubular portion 41 and extends rearward from the first switching groove 52 formed in the shaft portion 50.
As shown in FIGS. 2 and 4, a second switching groove 64 that linearly extends along the axis O3 and opens rearward is formed on the inner peripheral surface of the fitting tubular portion 63 on the rear end side. There is.

In the illustrated example, two second switching grooves 64 are formed at equal intervals in the circumferential direction, and when the guide member 6 is rotated around the axis O3 to be positioned at an injection position described later, The first switching groove 52 is formed to communicate with the first switching groove 52 and to be disconnected from the first switching groove 52 when the guide member 6 is positioned at a stop position described later, as shown in FIG.
The number of the second switching grooves 64 is not limited to two, and for example, one or three or more may be formed, and it is preferable to arrange the second switching grooves 64 according to the number of the first switching grooves 52. .

The first switching groove 52 and the second switching groove 64 described above are switches for switching communication and disconnection between a communication groove 68 and an injection cylinder portion 4 described later with the rotation of the guide member 6 with respect to the support body 5. The groove 65 is formed.
The first switching groove 52 and the second switching groove 64 communicate with each other so that the content liquid introduced into the first annular space 55 is passed through the second switching groove 64 and the first switching groove 52 to form an annular wall. It can be introduced into the gap between the portion 62 and the tip surface of the shaft portion 50.

  As shown in FIG. 2, the guide shaft portion 60 extends forward from the annular wall portion 62 and projects further forward than the distal end tubular portion 41. In the illustrated example, the guide shaft portion 60 has a front end portion closed and is formed in a cylindrical shape having a rear opening. However, the shape of the guide shaft portion 60 is not limited to this case, and may be formed in a solid cylindrical shape, for example.

On the rear end side of the guide shaft portion 60, a plurality of through holes 66 that radially penetrate the peripheral wall of the guide shaft portion 60 are formed at intervals in the circumferential direction. As a result, the content liquid introduced into the gap between the annular wall portion 62 and the tip end surface of the shaft portion 50 is defined as the second liquid defined between the guide shaft portion 60 and the inner cylinder portion 61 through the through hole 66. It can be introduced into the annular space 67.
When the guide shaft portion 60 is formed into a solid columnar shape, for example, the through hole 66 may be formed so as to penetrate the annular wall portion 62 in the front-rear direction L1.

As shown in FIGS. 2 and 6, the outer peripheral surface of the guide shaft portion 60 on the front end side is formed with a communication groove 68 that extends linearly along the axis O3 direction and opens toward the front. As a result, the liquid content introduced into the second annular space 67 can be introduced into the communication groove 68.
In the illustrated example, two connecting grooves 68 are formed on the outer peripheral surface of the guide shaft portion 60 at equal intervals in the circumferential direction. However, the present invention is not limited to this case, and one or three or more connecting grooves 68 may be formed, or may be formed in an annular shape over the entire circumference of the guide shaft portion 60.

  As shown in FIG. 2, the guide member 6 connects the outer tubular portion 70 surrounding the distal end tubular portion 41 from the outside in the radial direction, the front end portion of the inner tubular portion 61 and the front end portion of the outer tubular portion 70 in the radial direction. An annular flange portion 71 located forward of the front open end of the distal end tubular portion 41, and a guide tubular portion 72 projecting forward from the flange portion 71 and surrounding the guide shaft portion 60 from the outside in the radial direction. A guide cylinder portion 72, an outer cylinder portion 70, and a retaining projection 44 that surrounds the retaining projection 44 from the outside in the radial direction; and an outer shell portion 74 that further surrounds the restricting cylinder portion 73 from the outside in the radial direction. ing.

The outer tubular portion 70 surrounds a portion of the distal end tubular portion 41 located in front of the retaining projection 44. The guide cylinder portion 72 extends forward to such an extent that the position of the front end edge is substantially the same as the position of the tip end surface of the guide shaft portion 60 in the direction of the axis O3.
The restriction tube portion 73 extends so that the rear end portion thereof is located rearward of the retaining protrusion 44. A locking projection 75 is formed at the rear end portion of the restriction tube portion 73 so as to project inward in the radial direction and locks the retaining projection 44 from the rear. In the illustrated example, a plurality of locking protrusions 75 are formed at intervals in the circumferential direction. As a result, the restricting cylinder portion 73 restricts the forward movement of the guide member 6.

Therefore, the entire guide member 6 is attached to the distal end cylinder portion 41 of the injection cylinder portion 4 via the support body 5 in a state where the guide member 6 is prevented from coming off forward.
The restriction tube portion 73 is integrally connected to the outer tube portion 70 via an annular connecting wall portion 76 that projects from the outer tube portion 70 radially outward. Formed through holes 77 are formed in the connecting wall portion 76 so as to correspond to the locking protrusions 75.

  The outer shell tubular portion 74 includes a front outer shell tubular portion 78 arranged on the front side of the flange portion 71, and a rear outer shell tubular portion 79 arranged behind the front outer shell tubular portion 78.

The front outer cylindrical portion 78 is formed in a cylindrical shape, and has a tapered cross-section whose diameter decreases from the connecting portion with the rear outer cylindrical portion 79 toward the front. That is, the front outer cylindrical portion 78 is formed so as to narrow toward the front. Further, the front outer cylindrical portion 78 projects further forward than the guide shaft portion 60 and the guide cylindrical portion 72.
The shape of the front outer cylindrical portion 78 is not limited to the above-described case, and may be formed, for example, in a cylindrical shape extending in the front-rear direction L1 with the same diameter. The front outer tubular portion 78 is integrally connected to the regulating tubular portion 73 via an annular connecting wall portion 80 that projects radially outward from the front end portion of the regulating tubular portion 73.

A front-rear groove 78a that extends in the front-rear direction L1 and opens toward the front is formed on the inner peripheral surface of the portion of the front outer tubular portion 78 that is located forward of the connecting wall portion 80. In the illustrated example, two front and rear grooves 78a are formed at equal intervals in the circumferential direction.
However, the number of front and rear grooves 78a is not limited to two, and for example, one or three or more may be formed.

The rear outer cylindrical portion 79 extends rearward to a position close to the front edge portion of the cover body 13.
As shown in FIG. 7, the rear outer cylindrical portion 79 is formed in a quadrangular shape in a plan view when viewed from the direction of the axis O3. However, the rear outer cylindrical portion 79 may be formed in a polygonal shape (for example, a triangular shape) other than a circular shape or a quadrangular shape in a plan view when viewed from the direction of the axis O3.

  The rear outer tubular portion 79 of the illustrated example is formed in a quadrangular shape in which the first wall portion 81, the second wall portion 82, the third wall portion 83, and the fourth wall portion 84 are connected in the circumferential direction. The guide member 6 of the present embodiment is reciprocally rotatable about the axis O3 at a rotation angle of about 90 degrees, and the two surfaces of the first wall portion 81 or the second wall portion 82 are located on the upper surface side of the cover body 13. It is possible to locate it at.

Then, when the guide member 6 is rotated so that the first wall portion 81 faces upward, the circumferential position of the first switching groove 52 and the circumferential position of the second switching groove 64 are changed as shown in FIG. When the guide member 6 is rotated so that the second wall portion 82 is aligned and the second wall portion 82 faces upward, the first switching groove 52 and the second switching groove 64 are largely separated in the circumferential direction as shown in FIG. In addition, the positional relationship between the first switching groove 52 and the second switching groove 64 is defined.
Therefore, the rotation position of the guide member 6 when the first wall portion 81 faces upward is the injection position that enables the ejection of the content liquid, and the rotation position of the guide member 6 when the second wall portion 82 faces upward. The rotation position is a stop position that regulates the injection of the content liquid.

A positioning means for positioning the rotation position of the guide member 6 may be provided between the guide member 6 and the injection cylinder portion 4, and the guide member 6 may be positioned at the injection position or the stop position.
Further, the present invention is not limited to the case where the guide member 6 is reciprocally rotated about the axis O3 at a rotation angle of about 90 degrees, and may be configured to be rotatable about the axis O3 by 360 degrees, for example.

  As shown in FIG. 2, the nozzle member 8 is attached to the guide shaft portion 60 and the guide cylinder portion 72 from the front, and the front-rear direction L1 (axis O3 direction) with respect to the guide shaft portion 60 and the guide cylinder portion 72. It is mounted so that it can move freely.

  The nozzle member 8 is disposed so as to face the front end surface (tip surface) of the guide shaft portion 60, extends from the nozzle wall portion 85 in which the nozzle hole 7 is formed, and extends rearward from the nozzle wall portion 85, and guide cylinder portion. An outer tubular portion 86 that surrounds 72 from the outside in the radial direction and an outer tubular portion 86 that is disposed inside the outer tubular portion 86 and extends rearward from the nozzle wall portion 85, and extends from the front to the front-rear direction L1 on the outer peripheral surface of the guide shaft portion 60. The nozzle cylinder portion 87 movably fitted is located between the outer cylinder portion 86 and the nozzle cylinder portion 87, extends rearward from the nozzle wall portion 85, and is closely fitted inside the guide cylinder portion 72. And a sealing tubular portion 88 that fits.

  The outer tubular portion 86 is arranged inside the front outer tubular portion 78 and the regulation tubular portion 73. The nozzle cylinder portion 87 extends rearward with a length that does not block the communication groove 68 formed in the guide shaft portion 60. Thereby, the communication groove 68 and the second annular space 67 are always in communication with each other.

The nozzle hole 7 is formed in the nozzle wall portion 85 while being arranged coaxially with the axis O3.
As shown in FIGS. 2 and 6, a portion of the rear surface of the nozzle wall portion 85 located inside the nozzle tubular portion 87 has a recessed shape that communicates with the nozzle hole 7 and swirls the content liquid inside in the circumferential direction. A spin chamber 90, and a spin groove 91 extending from the spin chamber 90 toward the inner peripheral surface of the nozzle cylinder portion 87 and feeding the content liquid into the spin chamber 90.

The spin chamber 90 is formed so as to be recessed toward the front and is formed in a circular shape in a plan view as seen from the direction of the axis O3.
The spin groove 91 is formed, for example, so as to extend in the tangential direction of the inner peripheral wall of the spin chamber 90, and feeds the content liquid from the above-described communication groove 68 into the spin chamber 90. As a result, a spin that swirls in the circumferential direction in the spin chamber 90 can be applied to the content liquid, and the spin-loaded content liquid can be guided to the nozzle hole 7.

In the illustrated example, two spin grooves 91 are formed at intervals in the circumferential direction. At this time, the inlet of the spin groove 91 located on the inner peripheral surface side of the nozzle tubular portion 87 and the connecting groove 68 formed on the outer peripheral surface of the guide shaft portion 60 overlap each other when viewed from the axis O3 direction.
The number of the spin grooves 91 is not limited to two, and may be one or three or more, for example, and may be formed in the circumferential direction with respect to the connecting groove 68 when viewed from the axis O3 direction. It only needs to overlap.

In the nozzle member 8 configured as described above, the rotation around the axis O3 is regulated by the circumferential engagement of the guide projection 115 and the front-rear groove 78a described later. This allows the nozzle member 8 to move relative to the guide member 6 in the front-rear direction L1.
In addition, between the nozzle member 8 and the guide member 6, it is possible to provide a restricting means for restricting the rotation of the nozzle member 8 about the axis O3 in stages.

  As shown in FIG. 2, the operation member 9 is a member for moving the nozzle member 8 in the front-rear direction L1, and is connected to the surrounding cylinder portion 95 surrounding the nozzle member 8 from the outside in the radial direction and the surrounding cylinder portion 95. In addition, the operation tube portion 96 is attached to the guide member 6 so as to be rotatable about the axis O3.

  The surrounding tubular portion 95 is disposed between the outer tubular portion 86 and the front outer tubular portion 78, and surrounds the outer tubular portion 86 from the radial outer side, and the radial direction from the front end portion of the surrounding tubular body 100. An annular flange wall 101 that protrudes outward and is arranged in front of the front end edge of the front outer cylindrical portion 78.

A slight gap is secured between the surrounding cylinder body 100 and the outer cylinder portion 86. As shown in FIGS. 8 and 9, in the surrounding cylinder body 100, there are two spiral grooves 102 that penetrate the surrounding cylinder body 100 in the radial direction and are spaced apart in the circumferential direction in correspondence with the number of front and rear grooves 78a. Has been formed.
In the illustrated example, the spiral groove 102 is formed in a spiral shape that opens rearward and extends forward from the rear opening toward the circumferential direction. The spiral groove 102 is formed, for example, over about 1/4 of the surrounding cylinder body 100.

  However, the number of spiral grooves 102 is not limited to two, and one or three or more spiral grooves 102 may be formed, and it is preferable to correspond to the number of front and rear grooves 78a. Further, the length of the spiral groove 102, the ratio of the movement amount in the front-rear direction L1 to the movement amount in the circumferential direction, and the like may be appropriately changed.

  As shown in FIG. 2, the outer peripheral edge portion of the flange wall 101 projects radially outward from the front outer tubular portion 78. A plurality of first locking ribs 103 projecting outward in the radial direction and arranged at intervals in the circumferential direction are formed on the outer peripheral edge of the flange wall 101.

  The operation tube portion 96 is fitted into the front outer tube portion 78 rotatably around the axis O3, and the operation tube body 110 projects radially inward from the front end of the operation tube body 110, and the flange wall 101. And an annular front cover portion 111 arranged in front of the.

  The operation tube main body 110 surrounds the entire circumference of the front outer tubular section 78 and is rotatably attached to the front outer tubular section 78 about the axis O3 in a state where the front outer tubular section 78 is prevented from slipping forward. A plurality of second locking ribs 112 are formed on the inner peripheral surface of the operation tube main body 110 on the front end side and project inward in the radial direction and are arranged at intervals in the circumferential direction. The second locking ribs 112 are locked to the first locking ribs 103 formed on the flange wall 101 from both sides in the circumferential direction.

  Thereby, when the operation tube portion 96 is rotated around the axis O3 with respect to the guide member 6, the surrounding tube portion 95 can be rotated together with the operation member 9. An operation piece 113 is provided on the operation tube main body 110 so as to project radially outward (upward in FIG. 2).

A guide protrusion 115 is provided on the outer tubular portion 86 of the nozzle member 8 so as to extend radially outward, and is slidably fitted in the spiral groove 102.
Two guide protrusions 115 are formed at intervals in the circumferential direction corresponding to the spiral groove 102. In the illustrated example, the guide protrusion 115 penetrates the spiral groove 102 and enters the front-rear groove 78 a formed on the inner peripheral surface of the front outer cylindrical portion 78. At this time, the guide protrusion 115 is immovable in the circumferential direction and is engaged in the front-rear groove 78a so as to be movable in the front-rear direction L1.
As described above, the guide projection 115 that has passed through the spiral groove 102 is engaged with the front-rear groove 78a, so that the rotation of the nozzle member 8 around the axis O3 is restricted. 8 can be moved in the front-rear direction L1.

(Operation of trigger type liquid ejector)
Next, a case of using the trigger type liquid ejector 1 configured as described above will be described.
In addition, it is assumed that the content liquid is filled in each member of the trigger type liquid ejector 1 by a plurality of operations of the trigger portion 11 and the content liquid can be sucked up from the suction cylinder portion 10. Further, in the guide member 6, it is assumed that the first wall portion 81 is located at the injection position in which the first wall portion 81 faces upward, and the first switching groove 52 and the second switching groove 64 are in communication with each other. . Further, it is assumed that the nozzle member 8 is arranged at the position closest to the guide member 6 side.

  When the trigger portion 11 shown in FIG. 1 is pulled backward against the urging force of the elastic member 26, the plunger 28 retracts with respect to the cylinder 27 as the trigger portion 11 moves rearward, so that the liquid content in the cylinder 27 increases. Can be introduced into the inner cylinder 16 of the suction cylinder portion 10. As a result, the second suction valve 21 can be pushed down to be closed and the first suction valve 20 can be pushed up to be opened, so that the liquid content from the inner cylinder 16 into the proximal end cylinder part 40 of the injection cylinder part 4 can be increased. Can be introduced under pressure.

  Then, as shown in FIG. 4, since the first switching groove 52 and the second switching groove 64 are in communication with each other, the content liquid supplied into the proximal end tubular portion 40 is transferred to the communication groove 54, the communication hole 53, It can be supplied into the spin groove 91 through the first annular space 55, the second switching groove 64, the first switching groove 52, the through hole 66, the second annular space 67 and the connecting groove 68.

At this time, as shown in FIG. 6, when viewed from the direction of the axis O3, the inlet of the spin groove 91 completely overlaps the front opening of the communication groove 68 in the direction of the axis O3. The content liquid can flow into the entire inlet of the spin groove 91.
Thereby, the content liquid can be supplied into the spin chamber 90 through the spin groove 91 at an appropriate pressure and flow rate. Therefore, the content liquid can be sufficiently swirled in the spin chamber 90, and the content liquid spun from the nozzle holes 7 can be sprayed to the outside in the form of mist.

When the trigger portion 11 is released after the content liquid is ejected, as shown in FIG. 1, the elastic restoring force of the elastic member 26 urges the trigger portion 11 forward and returns to the original position. Accordingly, the plunger 28 moves forward with respect to the cylinder 27. Therefore, a negative pressure is generated in the cylinder 27, the second suction valve 21 is opened, and the first suction valve 20 is closed, so that the content liquid in the container A is sucked up into the tubular portion 10 through the pipe 19. be able to.
As a result, the sucked content liquid can be introduced into the cylinder 27 to prepare for the next injection.

When the trigger type liquid ejector 1 is stored after the content liquid is ejected, the guide member 6 is rotated around the axis O3 so that the second wall portion 82 of the rear outer tubular portion 79 faces upward. The guide member 6 is positioned at the stop position.
As a result, as shown in FIG. 5, the first switching groove 52 and the second switching groove 64 are displaced from each other in the circumferential direction, so that the communication between the two can be blocked. Therefore, the communication between the spin groove 91 and the injection cylinder portion 4 through the communication groove 68 can be blocked, and the trigger type liquid ejector 1 can be stored while the injection of the content liquid is stopped. .

  As described above, by rotating the guide member 6 about the axis O3 and positioning the guide member 6 at the injection position or the stop position, the switching groove 65 allows the communication groove 68 to communicate with the injection cylinder portion 4, and Switch the cutoff. Therefore, it is possible to quickly switch between the injection mode in which the content liquid is injected and the stop mode in which the injection of the content liquid is stopped.

  Further, when ejecting the content liquid, the ejection mode can be changed by moving the nozzle member 8 in the front-rear direction L1 using the operation member 9.

For example, when the operation tube portion 96 is rotated around the axis O3 as shown in FIG. 10 while gripping the operation piece 113, the first locking rib 103 and the second locking rib 112 are locked to each other. The surrounding tubular portion 95 can be co-rotated about the axis O3, and the entire operation member 9 can be rotated about the axis O3.
By rotating the surrounding tubular portion 95 in which the spiral groove 102 is formed around the axis O3, the guide protrusion 115 shown in FIG. 2 can be relatively moved along the spiral groove 102. At this time, the nozzle member 8 having the guide projection 115 formed therein is restricted from rotating about the axis O3 by the engagement of the guide projection 115 in the front-rear groove 78a. It is supposed to be movable to L1. Therefore, the guide protrusion 115 moves in the front-rear direction L1 while sliding in the spiral groove 102.

  That is, the front-rear groove 78a, the spiral groove 102, and the guide protrusion 115 can convert the rotational movement of the operating member 9 into the linear movement movement of the nozzle member 8, and the nozzle member 8 can be moved in the front-back direction L1. This makes it possible to change the distance between the nozzle wall portion 85 in which the nozzle hole 7 is formed and the front end surface of the guide shaft portion 60 along the axis O3 direction.

As shown in FIG. 2, when the nozzle wall portion 85 is in contact with the front end surface of the guide shaft portion 60, the inlet of the spin groove 91 and the front opening portion of the communication groove 68 are in contact with each other without a gap. . Therefore, as described above, the entire amount of the content liquid from the communication groove 68 can be supplied into the spin groove 91. Therefore, the content liquid swirling in the spin can be jetted from the nozzle hole 7 while maintaining the state of being properly spun.
As a result, the content liquid can be ejected at a large ejection angle (spread angle) θ1, and mist-like ejection with a wide diffusion state can be performed.

  On the other hand, when the operation member 9 is rotated around the axis O3 and the nozzle member 8 is moved forward to be separated from the guide member 6 as shown in FIG. 11, the nozzle wall portion 85 and the guide shaft portion 60 are provided. The space between the front end face of and becomes large. Therefore, the internal volume of the internal space (including the spin chamber 90) defined between the nozzle wall portion 85 and the front end surface of the guide shaft portion 60 increases. Therefore, the turning force in the spin chamber 90 can be reduced (the degree of spin can be reduced).

  In particular, since a gap is formed between the inlet of the spin groove 91 and the front opening of the communication groove 68, a part of the content liquid supplied from the communication groove 68 does not pass through the spin groove 91 and the inside of the spin chamber 90 is prevented. Get in. Therefore, the turning force in the spin chamber 90 is easily reduced.

  Therefore, as compared with the case where the nozzle member 8 is located on the guide member 6 side, the content liquid can be ejected at a smaller ejection angle θ2, and as shown in FIG. Can be made even smaller to perform linear injection and the like.

In this way, the nozzle member 8 is moved in the front-rear direction L1 by the rotation of the operation member 9, so that the mode of ejecting the content liquid can be changed, and thus the desired mode of spraying can be easily changed.
In particular, since the injection mode can be changed by a simple operation of simply rotating the operation member 9, it is easy to use and the operability can be improved. Further, since the spin chamber 90, the spin groove 91, and the communication groove 68 can be commonly used regardless of the ejection mode, the configuration can be simplified. Therefore, the cost can be reduced, and the assembling work can be efficiently performed.

As described above, according to the trigger type liquid ejector 1 of the present embodiment, it is possible to change the ejection mode of the content liquid with a simple configuration. For example, the content liquid is ejected in a mist state while changing the diffusion state. It is also possible to perform the same injection in a straight line.
Therefore, for example, the content liquid can be ejected in an optimal ejection mode according to the object to which the content liquid is ejected, the place of use, and the like, which is easy to use.

  Further, according to the rotation amount of the operating member 9, for example, the movement amount of the nozzle member 8 along the front-back direction L1 can be freely adjusted in a stepless manner. From the contact state, the nozzle member 8 can be moved forward by an arbitrary amount. This makes it possible to finely adjust the ejection angle of the content liquid and is easy to use.

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

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

  Further, in the above embodiment, the connecting groove 68 is formed on the outer peripheral surface of the nozzle shaft portion 50, but the connecting groove 68 may be formed on the inner peripheral surface of the nozzle tubular portion 87. Further, although the spin chamber 90 and the spin groove 91 are formed on the rear surface of the nozzle wall portion 85, the spin chamber 90 and the spin groove 91 may be formed on the front end surface of the guide shaft portion 60.

Further, in the above-described embodiment, for example, the front cover portion 111 of the operation member 9 or the nozzle wall portion 85 is provided with a switching unit including a switching plate for switching the content liquid atomized from the nozzle holes 7 into a foam state. It doesn't matter.
In this case, for example, the switching plate having the foam holes may be rotatably (openably and closably) connected to the front cover portion 111 and the nozzle wall portion 85 via a hinge portion. Thus, by opening the switching plate, the mist-like content liquid injected from the nozzle hole 7 is ejected as it is, and by closing the switching plate, the gap between the nozzle hole 7 and the switching plate is closed. It is possible to mix the mist-like content liquid with the outside air to form a foam.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with known constituent elements within the scope of the present invention, and it is also possible to appropriately combine the modified examples.

O3 ... Axis of guide shaft A ... Container body 1 ... Trigger type liquid ejector (liquid ejector)
2 ... Ejector body 4 ... Injection cylinder part 6 ... Guide member 5 ... Support member 7 ... Nozzle hole 8 ... Nozzle member 9 ... Operation member 60 ... Guide shaft part 63 ... Fitting cylinder part 65 ... Switching groove 68 ... Communication groove 73 ... Regulating cylinder part 85 ... Nozzle wall part 87 ... Nozzle cylinder part 90 ... Spin chamber 91 ... Spin groove 95 ... Enclosing cylinder part 96 ... Operation cylinder part 102 ... Spiral groove 115 ... Guide protrusion

Claims (2)

An ejector main body, which is attached to a container body containing the content liquid and has an injection cylinder portion for ejecting the content liquid,
A guide member having a guide shaft portion and attached to the tip end portion of the injection cylinder portion;
A nozzle hole is formed in which the content liquid supplied from the injection cylinder portion is ejected, and the nozzle wall portion is arranged to face the tip end surface of the guide shaft portion, and the nozzle wall portion faces the guide member side. Nozzle member that is provided so as to protrude, and is fitted to the outer peripheral surface of the guide shaft portion so as to be movable in the axial direction of the guide shaft portion,
An operating member having an enclosing tube portion surrounding the nozzle member from the outside, and an operating tube portion connected to the enclosing tube portion and rotatably attached to the guide member around the axis. ,
Between the outer peripheral surface of the guide shaft portion and the inner peripheral surface of the nozzle cylinder portion, a communication groove for supplying the content liquid from the injection cylinder portion is formed,
A concave spin chamber that communicates with the nozzle hole and swirls the content liquid around the axis at a tip end surface of the guide shaft portion or a portion of the inner surface of the nozzle wall portion that is located inside the nozzle cylinder portion. When extending outwardly from said spin chamber, and spin grooves communicating with said spin chamber and said contact groove, it is formed,
The surrounding tubular portion is capable of co-rotating around the axis along with the rotation of the operating tubular portion,
The surrounding tubular portion is formed with a spiral groove extending in the axial direction toward the circumferential direction,
A guide protrusion is formed on the nozzle member, the guide protrusion protruding from the nozzle member toward the surrounding tubular portion and slidably fitted in the spiral groove.
The guide protrusion penetrates the spiral groove and engages with the front and rear grooves formed in the guide member so as to extend in the axial direction, so that the guide protrusion cannot move in the circumferential direction and can move in the axial direction. Be free,
With the movement of the nozzle member in the axial direction, the distance between the tip end surface of the guide shaft portion and the nozzle wall portion along the axial direction changes, and the swirling force of the content liquid in the spin chamber is changed. Liquid ejector that changes. The liquid ejector according to claim 1,
A support body fitted inside the tip of the injection cylinder;
The guide member includes a fitting tubular portion that is fitted to the support body so as to be rotatable around the axis.
Between the outer peripheral surface of the support body and the inner peripheral surface of the fitting cylinder portion, the communication between the inside of the communication groove and the inside of the injection cylinder portion is accompanied by the rotation of the guide member with respect to the support body, and A liquid ejector in which a switching groove for switching the cutoff is formed.

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