Ejector

Abstract

To provide an ejector capable of suppressing liquid leakage while suppressing an increase in size even when a shaft part of a piston receives a lateral load.SOLUTION: There are provided a body including an injection nozzle portion extending in a first direction, a cap that houses a base portion of an intake and fixes and holds the body to a mouth portion of a container, an operation lever swingably supported by the body via a rotation shaft extending in a second direction orthogonal to the first direction, and a pump including a cylinder having an opening hole for replacing air in the container through the intake and a piston that reciprocates in the first direction in the cylinder. The operation lever has engagement portions respectively provided on both sides in the second direction across a penetrating portion penetrating along the first direction. The injection nozzle part has a fitting part inserted into the penetration part in the first direction and fitted to the engagement part in the second direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an ejector. [Background technology]

[0002] Conventionally, trigger-type ejectors that eject liquid by pulling an operating lever (trigger lever) have been known as ejectors for ejecting liquid. Such trigger-type ejectors are equipped with a pump consisting of a piston and a cylinder that pressurizes and pumps the liquid in a container by repeatedly pulling the trigger lever (for example, Patent Document 1).

[0003] In the above-mentioned sprayer, due to the structure of the user's fingers, the fingers rotate from the joint at the base of the hand, so when the trigger lever is operated, a lateral load (a direction intersecting the direction of movement of the piston) is also applied. Therefore, the sprayer described in Patent Document 2 discloses a configuration in which the trigger is provided with a pair of guide parts that extend along the pulling direction, and the guide parts are fitted into a cover member as part of the main body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-105919 [Patent Document 2] Japanese Patent Publication No. 2022-48500 Summary of the Invention [Problem to be solved by the invention]

[0005] In the ejector described in Patent Document 2, the cover member needs to be made larger because of the need to increase its rigidity, which results in a problem of the ejector being made larger.

[0006] The present invention has been made in consideration of the above points, and aims to provide an ejector that can suppress liquid leakage while preventing an increase in size, even when a lateral load is applied to the shaft portion of the piston. [Means for solving the problem]

[0007] According to a first aspect of the present invention, there is provided an ejector comprising: a body having an injection nozzle portion extending in a first direction; a cap that houses the base of an intake and fixes and holds the body to the mouth of a container; an operating lever that is swingably supported on the body via a rotation axis that extends in a second direction perpendicular to the first direction; and a pump that has a cylinder with an opening that replaces air in the container through the intake and a piston that moves back and forth in the first direction within the cylinder, wherein the operating lever has engaging portions provided on both sides in the second direction, sandwiching a through portion that passes through along the first direction, and the injection nozzle portion has a fitting portion that is inserted into the through portion in the first direction and fits into the engaging portion in the second direction. [Effects of the Invention]

[0008] The present invention can provide an ejector that can suppress liquid leakage while suppressing an increase in size, even when a lateral load is applied to the shaft portion of the piston. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view showing a trigger-type ejector according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the injection nozzle portion 50 as seen from the -X side. [Figure 3] FIG. 2 is a side view of the injection nozzle portion 50 as seen from the +Y side. [Figure 4] FIG. 2 is a plan view of the injection nozzle portion 50 as seen from the +Z side. [Figure 5] FIG. 2 is a partially enlarged view showing a reciprocating pump. [Figure 6] FIG. 10 is a view of the operating lever 31 as seen from the -Y side. [Figure 7]FIG. 10 is a view of the operating lever 31 as seen from the -X side. [Figure 8] FIG. 10 is a view of the operating lever 31 as seen from the -Y side. [Figure 9] FIG. 2 is a perspective view of the injection nozzle body and a part of the intake. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of an ejector of the present invention will be described with reference to FIGS. The following embodiment shows one aspect of the present invention, does not limit the present invention, and can be modified as desired within the scope of the technical concept of the present invention. In addition, in the following drawings, the scale and number of each structure are different from the actual structure to make each configuration easier to understand.

[0011] In the following description, an XYZ coordinate system is set, and the positional relationship of each component is described with reference to this XYZ coordinate system. Here, the vertical direction is the Z-axis direction, the upper side of the vertical direction is the +Z side, the lower side of the vertical direction is the -Z side, the horizontal direction in which the piston 30 (see FIG. 1) slides is the Y-axis direction, and the direction perpendicular to the Y-axis and Z-axis directions is the X-axis direction. In the following description, the ejection direction refers to the main direction in which the liquid composition is ejected to the outside, and in this embodiment, it is the +Y direction. The Y-axis direction corresponds to the first direction, and the X-axis direction corresponds to the second direction.

[0012] Fig. 1 is a cross-sectional view showing a first embodiment of a trigger-type ejector, and Fig. 2 is a partially enlarged view showing a reciprocating pump of the trigger-type ejector.

[0013] As shown in Figure 1, the trigger-type sprayer (sprayer) 1 comprises a container 21, a trigger-type spray device 2 fixedly held at the mouth 21a of the container 21 by a cap 22 for spraying the liquid composition contained in the container 21, and an intake 10.

[0014] The jetting device 2 includes a reciprocating pump 3, a body 4, a liquid supply tube 23, a valve portion 24, a liquid guide plug 27, a nozzle member (jet portion) 26, and an operating lever 31. The trigger-type sprayer 1 has a reciprocating pump (pump) 3 that is operated by an operating lever 31 built into the spray device 2, and by operating the reciprocating pump 3 in conjunction with the operation of the operating lever 31, the liquid composition in the container 21 is sucked up and sprayed out. The shape of the container 21 is not particularly limited and may be any shape as long as it can accommodate the liquid composition.

[0015] The liquid delivery tube 23 is used to suck and deliver the liquid composition in the container 21 , and has one end disposed in the container 21 and the other end connected to a valve portion 24 attached to the body 4 .

[0016] The intake 10 has a cylindrical body 10a that fits within the passage R1 of the jetting device 2, and a base 10b that is integrated with the cylindrical body 10a and fits at the lower end of the body 4. The liquid supply tube 23 is fitted and held in the opening of the intake 10. The base of the intake 10 is housed inside the cap 22.

[0017] The body 4 is molded from a synthetic resin (for example, PP, PE, Ny, PET, PS, POM, PAN, ABS, etc.). The body 4 includes a valve portion 24 provided therein, an injection nozzle portion 50, a liquid passage (feed path) 25 that communicates with the inside of the cylinder chamber 29a via the valve portion 24, and a cylindrical liquid passage portion 38 in which the liquid passage 25 is formed. The valve portion 24 is provided inside the cylindrical body 10a of the intake 10.

[0018] A liquid guide plug 27 is fitted to the tip of the liquid passage part 38 of the body 4, and a nozzle member 26 is attached to the tip of the liquid guide plug 27. In addition, the outside of the body 4 is covered with a cover 5 molded from synthetic resin.

[0019] Fig. 2 is a front view of the injection nozzle unit 50 seen from the -X side, Fig. 3 is a side view of the injection nozzle unit 50 seen from the +Y side, and Fig. 4 is a plan view of the injection nozzle unit 50 seen from the +Z side.

[0020] As shown in Figures 1 to 4, the spray nozzle part 50 extends in the Y-axis direction. The spray nozzle part 50 has a spray nozzle part main body 51, a protrusion part 52, a fitting part 53, a second engagement part 54, and a fitting protrusion part 55. The spray nozzle part main body 51 is cylindrical and extends in the Y-axis direction. The spray nozzle part main body 51 has an insertion hole 56 into which the liquid passage part 38 is inserted from the -Y side.

[0021] The protrusion 52 extends downward from the injection nozzle main body 51 toward the -Z side. The fitting portion 53 has a first fitting portion 53A and a second fitting portion 53B. The first fitting portion 53A is plate-shaped and protrudes downward from the injection nozzle main body 51, extending in the Y-axis direction. The first fitting portions 53A are provided in pairs on both sides of the center of the injection nozzle main body 51 in the Y-axis direction, with a gap between them.

[0022] The second fitting portion 53B has a rectangular pillar shape extending toward the -Y side in the Y-axis direction from a position on the -Z side of the first fitting portion 53A on the protrusion 52. The second fitting portion 53B has a fitting protrusion 55. The fitting protrusion 55 has a cylindrical shape that protrudes and extends toward the -Y side from the second fitting portion 53B.

[0023] 2 and 3, the second engagement portion 54 extends and protrudes locally toward the -Y side from the cylindrical injection nozzle main body 51. The second engagement portion 54 protrudes toward the -Y side from the injection nozzle main body 51 on the -Z side of the center of the injection nozzle main body 51, and is arc-shaped when viewed from the -Y side. As shown in FIG. 4, the second engagement portions 54 are provided on both sides in the X-axis direction, sandwiching a groove portion 54A located at the center in the X-axis direction. The groove portion 54A extends in the X-axis direction.

[0024] The reciprocating pump 3 has a cylinder 29 connected to the valve section 24, a piston 30 that forms a cylinder chamber 29a between itself and the cylinder 29 and moves in a sliding manner in the Y direction along an inner peripheral surface 29f of the cylinder 29, and a ring member 9 through which a portion of the piston 30 is inserted and that holds the piston 30 movably in the direction of its sliding movement, and is connected to the body 4. The cylinder 29 has an opening 29e that replaces air in the container 21 through the intake 10. When an operating lever 31 adjacent to the piston 30 is operated, the reciprocating pump 3 sucks the liquid composition from the container 21 and pressurizes and pumps it to the body 4 side via the valve section 24.

[0025] Next, the specific configuration of each component will be described. 1 and 5, the reciprocating pump 3 includes a cylindrical cylinder 29 that opens toward the ejection direction, and a piston 30 that opens toward the axially opposite side of the ejection direction and is housed within the cylinder 29. An annular cylinder chamber 29a is formed between the cylinder 29 and the piston 30 within the cylinder 29. The cylinder chamber 29a is formed not only inside the cylinder 29 but also inside the piston 30, and is capable of containing the liquid composition supplied from the container 21 via the valve section 24. The maximum volume of the cylinder chamber 29a (volume in the state shown in FIG. 1) is equal to or greater than the amount of liquid composition that is ejected from the nozzle member 26 with one pulling operation of the operating lever 31.

[0026] Cylinder 29 has an inner circumferential surface 29f, a cylindrical main body 41 that is open on the +Y side and has a bottom wall 42 at its end on the -Y side, and an inner core 29b that extends coaxially with main body 41 along the Y direction from a bottom surface 42a of bottom wall 42 that faces cylinder chamber 29a toward the open side (+Y side) of main body 41. A piston 30 is housed within cylinder 29 so as to cover the outer periphery of inner core 29b. A gas-liquid inlet hole 29c is formed on the lower side (-Z side), which is a part of the cylindrical side wall of cylinder 29, through which residual pressure and liquid within cylinder 29 are introduced into gas-liquid inlet path 14. Gas-liquid inlet path 14 is formed as a space between cylinder 29 and body 4 and is in communication with the interior of container 21. Specifically, gas-liquid inlet path 14 is in communication with the interior of container 21 via a communication hole 4a formed in the lower part of body 4 and a communication hole 24g formed in the lower part of valve portion 24.

[0027] Piston 30 is connected to operating lever 31 on the +Y side, and has a shaft portion 30a having a hollow portion 43 that opens to the -Y side and extends in the Y direction and into which inner core portion 29b is inserted, a flange portion (connecting portion) 30b provided on the outer peripheral surface of the opening side of shaft portion 30a, and a sliding portion 30c provided around the periphery of flange portion 30b. Piston 30 is assembled by inserting inner core portion 29b of cylinder 29 into shaft portion 30a.

[0028] The sliding portion 30c is provided around the entire circumference around the Y axis centered on the shaft portion 30a. The sliding portion 30c is provided in close contact with the inner peripheral surface 29f of the cylinder 29 and moves in a sliding manner along the inner peripheral surface 29f of the cylinder 29. The sliding portion 30c has a recess 30e that is recessed radially inward at the center in the direction in which the piston 30 moves in a sliding manner (Y axis direction). The position of the -Y side end of the sliding portion 30c is the same as the position of the -Y side end of the shaft portion 30a of the piston 30.

[0029] Recess 30e is a portion that functions to retain the liquid composition that has flowed out from inside cylinder chamber 29a along inner circumferential surface 29f of cylinder 29 and to allow it to flow into gas-liquid introducing hole 29c. The tip end of piston 30 on the +Y side is engaged with the back side of operating lever 31, and is able to move in a sliding manner in the Y-axis direction in conjunction with operating lever 31.

[0030] The ring member 9 is attached to the tip of the cylinder 29 in the Y-axis direction and closes the open side of the cylinder 29. An insertion hole 9a is provided in the center of the ring member 9, through which the shaft portion 30a of the piston 30 is inserted. The ring member 9 holds the piston 30 in the insertion hole 9a so that it can move freely in the Y-axis direction. The insertion hole 9a has a diameter slightly larger than the outermost diameter of the shaft 30a of the piston 30, and is sized so as not to hinder the sliding movement of the piston 30. The inner circumferential surface of the insertion hole 9a slides against the shaft 30a of the piston 30, restricting the movement of the piston 30 in a direction intersecting the sliding movement direction, thereby holding the piston 30 within the cylinder 29 without rattle. This prevents lateral displacement of the piston 30 relative to the cylinder 29, even when the user pulls the operating lever 31 at an angle, preventing a gap from forming between them and preventing the liquid composition in the reciprocating pump 3 from leaking to the outside.

[0031] The ring member 9 also has a fitting hole 9b that penetrates in the Y-axis direction. The fitting hole 9b is provided at a position facing the second fitting portion 53B (fitting protrusion 55) in the Y-axis direction. The fitting hole 9b and the fitting protrusion 55 are fitted together.

[0032] Fig. 6 is a view of the operating lever 31 as seen from the -Y side, and Fig. 7 is a view of the operating lever 31 as seen from the -X side. As shown in Figures 6 and 7, the operating lever 31 has a main body portion 31A that is formed in an approximately U-shape with a cross section perpendicular to the longitudinal direction opening toward the -Y side, a rotation axis A provided in the main body portion 31A, and a connecting portion 31C provided in the main body portion 31A and connected to the piston 30.

[0033] Main body 31A has a pair of side walls 61 that are parallel to the YZ plane and spaced apart in the X direction, and a side wall 62 that connects +Y side ends of the pair of side walls 61. As shown in Fig. 6, main body 31A, when viewed from the front from the -Y side (hereinafter referred to as viewed in the -Y direction), is formed in the shape of a rectangular frame that is surrounded by side walls 61, 62, opens toward the -Y side, and has a recess 63 that is open on the +Z side.

[0034] The rotation axis A is fitted to a hole (not shown) provided in the body 4 so as to be able to swing freely. With the rotation axis A fitted to the body 4, the operating lever 31 is supported to be able to swing relative to the body 4 via the rotation axis A. The rotation axis A is disposed near the +Z side end of each side wall 61. The rotation axis A extends coaxially outward in the X-axis direction.

[0035] As shown in Fig. 6, the recess 63 of the main body 31A is provided with a rectangular rib 70 and a plate-shaped rib 71 when viewed in the -Y direction. The rib 70 is disposed on the -Z side of the rotation axis A. The rib 70 has a first rib 70a extending in the X direction, which is the direction of the short sides of the rectangular frame-shaped main body 31A, and a second rib 70b extending in the Z direction, which is the direction of the long sides. The rib 70 protrudes from the side wall 62 toward the -Y side.

[0036] The connecting portion 31C is provided on each of the second ribs 70b of the rib 70. As shown in FIG. 7, each connecting portion 31C is formed around an axis extending in the X-axis direction and is formed in a cylindrical shape protruding from the main body portion 31A to the -Y side. The connecting portions 31C are arranged coaxially. Each connecting portion 31C protrudes more inward than the second ribs 70b in the X-axis direction. The operating lever 31 is connected to the piston 30 at the connecting portion 31C.

[0037] The operating lever 31 has a through-hole 32 that penetrates in the X-axis direction. The through-hole 32 has a first through-hole 32A located on the +Z side of the first rib 70a, and a second through-hole 32B located on the -Z side of the first rib 70a.

[0038] FIG. 8 is a view of the operating lever 31 as seen from the -Y side. As shown in FIG. 8, the first fitting portion 53A of the injection nozzle main body 51 is inserted into the first through portion 32A from the +Y side. The first fitting portion 53A inserted into the first through portion 32A fits in the X-axis direction with the operating levers 31 located on both sides of the first through portion 32A in the X-axis direction. The first fitting portion 53A fits in the X-axis direction with side walls 62 located on both sides of the first through portion 32A in the X-axis direction. The first fitting portion 53A, which fits in the X-axis direction with the side walls 62, engages with the side walls 62 in the X-axis direction, thereby restricting movement of the operating lever 31 in the X-axis direction. In other words, the side walls 62 located at the first through portion 32A form the engaging portion 62A.

[0039] The second fitting portion 53B of the injection nozzle main body 51 is inserted into the second through-portion 32B from the +Y side. The second fitting portion 53B inserted into the second through-portion 32B fits in the X-axis direction with the operating levers 31 located on both sides in the X-axis direction with the second through-portion 32B sandwiched therebetween. The second fitting portion 53B fits in the X-axis direction with side walls 62 located on both sides in the X-axis direction with the second through-portion 32B sandwiched therebetween. The second fitting portion 53B fits in the X-axis direction with the side walls 62, which fit in the X-axis direction, and engages with the side walls 62 in the X-axis direction, thereby restricting movement of the operating lever 31 in the X-axis direction. In other words, the side walls 62 located at the second through-portion 32B form the engaging portion 62B.

[0040] Furthermore, when the second fitting portion 53B is inserted into the second through portion 32B and fitted with the side wall 62 in the X-axis direction, the fitting protrusion 55 is fitted into the fitting hole 9b of the ring member 9. By fitting the fitting protrusion 55 into the fitting hole 9b of the ring member 9, the movement of the operating lever 31 fitted with the second fitting portion 53B in the X-axis direction is further restricted.

[0041] From the standpoint of operability and usability, the distance in the X-axis direction between the first through portion 32A and the first fitting portion 53A and the distance in the X-axis direction between the second through portion 32B and the second fitting portion 53B are preferably 0 mm or more and 1 mm or less, more preferably 0.1 mm or more and 0.5 mm or less, and even more preferably 0.1 mm or more and 0.3 mm or less. If the distance is less than 0 mm, the sliding operation will be poor, and if it exceeds 1 mm, the gap will be too large and the effect of preventing lateral pulling will be lost.

[0042] The diameter of the fitting protrusion 55 to be fitted into the fitting hole 9b of the ring member 9 is as follows: It is preferably 1 mm or more and 3 mm or less, and more preferably 2 mm or more and 2.5 mm or less. If the diameter of the fitting protrusion 55 is less than 1 mm, the strength of the fitting protrusion 55 will be low and it may break during sliding, and if it exceeds 3 mm, it may be too large for the size of the cylinder 29 and may not be able to fit.

[0043] FIG. 9 is a perspective view showing a portion of the injection nozzle main body 51 and the intake 10. As shown in FIG. 9, the base 10b of the intake 10 has a tubular portion 10c and a rib portion 10d. The tubular portion 10c is cylindrical and extends in the Y-axis direction, and is disposed on the +Z side of the second engagement portion 54 of the injection nozzle main body 51. The rib portion 10d protrudes from the outer peripheral surface of the tubular portion 10c to the -Z side. The rib portion 10d extends in the Y-axis direction. The rib portion 10d is inserted into the groove portion 54A of the injection nozzle main body 51 from the -Y side.

[0044] By inserting the rib portion 10d into the groove portion 54A, the second engagement portion 54 engages with the rib portion 10d on both sides in the X-axis direction, sandwiching the rib portion 10d. By the second engagement portion 54 engaging with the rib portion 10d on both sides in the X-axis direction, sandwiching the rib portion 10d, movement of the injection nozzle main body 51 in the X-axis direction is restricted. This further firmly restricts movement of the operating lever 31 in the X-axis direction, which engages with the first fitting portion 53A and the second fitting portion 53B provided on the injection nozzle main body 51.

[0045] From the viewpoint of fit and strength, the distance between the rib portion 10d of the intake 10 and the mating second engagement portion 54 is preferably 0 mm or more and 0.4 mm or less, and more preferably 0 mm or more and 0.2 mm or less. If the gap is less than 0 mm, it will be difficult to fit together, which may result in damage to the second engaging portion 54. If the gap exceeds 0.4 mm, the fit will be insufficient, resulting in a loss of fixing effect.

[0046] In the trigger-type sprayer 1 configured as described above, when the user grips or loosens the operating lever 31, the piston 30 moves in a sliding state along the horizontal direction (Y-axis direction) in which the inner core portion 29b of the cylinder 29 protrudes. Specifically, when the user grips the operating lever 31 and moves it closer to the container 21, the piston 30 moves toward the valve portion 24 (-Y side). Furthermore, when the operating lever 31 is loosened, the elastic restoring force of the spring piece 13 moves the piston 30 toward the operating lever 31 (+Y side).

[0047] The operating lever 31 is provided so as to be able to swing about the rotation axis A. When the operating lever 31 is not being operated, it extends vertically downward (towards the -Z side) as it moves in the ejection direction (towards the +Y side). The operating lever 31 is connected to the body 4 via a return spring 6, and a spring piece 13 hanging down from a horizontal base plate 12 is elastically deformed in response to operation of the operating lever 31. The horizontal base plate 12 of the return spring 6 receives a large force as the spring piece 13 is deformed by operation of the operating lever 31, but it also functions to cause the spring piece 13 to exert an elastic restoring force as soon as the pulling action of the operating lever 31 is released.

[0048] By operating the operating lever 31, the piston 30 in the cylinder 29 is caused to reciprocate in the Y-axis direction, thereby changing the volume of the cylinder chamber 29a and transferring the liquid composition in the container 21 to the nozzle member 26.

[0049] When a user grips the operating lever 31 and receives a lateral load via the operating lever 31 while the inner core portion 29b is not fully seated in the hollow portion 43 of the shaft portion 30a, the end portion on the +Y side of the shaft portion 30a is displaced in the lateral direction. At this time, the engaging portions 62A and 62B provided on both sides of the through portion 32 of the operating lever 31 in the lateral direction (X-axis direction) engage with the fitting portion 53 in the X-axis direction.

[0050] As a result, in the trigger-type ejector 1 of this embodiment, the movement of the operating lever 31 in the X-axis direction is restricted, so that it is possible to suppress liquid leakage even when a lateral load is applied to the shaft portion 30a of the piston 30, without the trigger-type ejector 1 becoming larger, as would be the case, for example, if the lateral displacement of the shaft portion 30a were suppressed using a cover 5.

[0051] More specifically, the first fitting portion 53A constituting the fitting portion 53 engages with the side wall 62 constituting the engagement portion 62A of the operating lever 31 in the X-axis direction, thereby restricting the movement of the operating lever 31 in the X-axis direction, and making it possible to suppress fluid leakage even when a lateral load is applied to the shaft portion 30a of the piston 30.

[0052] Furthermore, the second fitting portion 53B constituting the fitting portion 53 engages with the side wall 62 constituting the engagement portion 62B of the operating lever 31 in the X-axis direction, thereby restricting movement of the operating lever 31 in the X-axis direction, and making it possible to suppress fluid leakage even when a lateral load is applied to the shaft portion 30a of the piston 30.

[0053] Furthermore, when the second fitting portion 53B is inserted into the second through portion 32B and fits with the side wall 62 in the X-axis direction, the fitting protrusion 55 fits into the fitting hole 9b of the ring member 9, thereby further restricting the movement of the operating lever 31 that fits with the second fitting portion 53B in the X-axis direction, thereby making it possible to further suppress liquid leakage even when a lateral load is applied to the shaft portion 30a of the piston 30.

[0054] Additionally, in the trigger-type sprayer 1 of this embodiment, the rib portion 10d is inserted into the groove portion 54A in the injection nozzle body 51 from the -Y side, so that the second engagement portion 54 engages with the rib portion 10d on both sides in the X-axis direction, sandwiching the rib portion 10d. This restricts movement of the injection nozzle body 51 in the X-axis direction, and further firmly restricts movement in the X-axis direction of the operating lever 31, which engages with the first fitting portion 53A and the second fitting portion 53B provided on the injection nozzle body 51. As a result, it is possible to further suppress liquid leakage even when a lateral load is applied to the shaft portion 30a of the piston 30.

[0055] As described above, in the trigger-type ejector 1 of this embodiment, even when a lateral load is applied to the shaft portion 30a of the piston 30, it is possible to prevent liquid leakage while preventing an increase in size.

[0056] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to these examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention.

[0057] For example, in the above embodiment, the fitting portion 53 has two fitting portions, the first fitting portion 53A and the second fitting portion 53B, but is not limited to this configuration. The fitting portion 53 may have one or three or more fitting portions.

[0058] In the above embodiment, the fitting protrusion is provided in the second fitting portion 53B, and the fitting hole is provided in the ring member 9, but the present invention is not limited to this configuration. For example, the fitting hole may be provided in the second fitting portion 53B, and the fitting protrusion may be provided in the ring member 9.

[0059] The present disclosure includes the following aspects. [1] An ejector comprising: a body having an injection nozzle portion extending in a first direction; a cap that houses the base of an intake and fixes and holds the body to the mouth of a container; an operating lever that is swingably supported on the body via a rotation axis that extends in a second direction perpendicular to the first direction; and a pump that has a cylinder with an opening that replaces air in the container through the intake and a piston that moves back and forth in the first direction within the cylinder, wherein the operating lever has engaging portions provided on both sides in the second direction, sandwiching a through portion that penetrates along the first direction, and the injection nozzle portion has a fitting portion that is inserted into the through portion in the first direction and fits into the engaging portion in the second direction.

[0060] [2] The ejector described in [1], wherein the injection nozzle portion has an injection nozzle portion main body and a protrusion portion extending downward from the injection nozzle portion main body, and the fitting portion has a first fitting portion that is provided protruding downward from the injection nozzle portion main body, extends in the first direction and is inserted into the through-hole, and fits with the engaging portion in the second direction, and a second fitting portion that extends in the first direction from a position on the protrusion portion lower than the first fitting portion and is inserted into the through-hole, and fits with the engaging portion in the second direction.

[0061] [3] The ejector described in [2] above has a ring member attached to the tip side of the cylinder in the first direction and holding the piston so that it can move freely in the first direction, the ring member having a fitting hole and one of a fitting protrusion that fit together at a position opposite the second fitting portion in the first direction, and the second fitting portion having the other fitting hole and one of the fitting protrusions that fit together at a position opposite the fitting hole and one of the fitting protrusions.

[0062] [4] An ejector as described in any one of [1] to [3], wherein the intake has a rib portion extending in the first direction, and the injection nozzle portion has second engagement portions extending in the first direction toward the intake and engaging with the rib portion on both sides of the rib portion in the second direction. [Explanation of symbols]

[0063] 1...Trigger type sprayer (sprayer), 2...Spray device, 3...Reciprocating pump (pump), 4...Body, 9...Ring member, 9b...Fitting hole, 10...Intake, 10d...Rib portion, 21...Container, 21a...Mouth portion, 22...Cap, 29...Cylinder, 29a...Cylinder chamber, 29e...Opening, 30...Piston, 30a...Shaft portion, 31...Operating lever, 32...Through portion, 32A...First through portion, 32B...Second through portion, 41...Main body portion, 43...Cavity portion, 50...Injection nozzle portion, 51...Injection nozzle portion main body, 52...Protrusion portion, 53...Fitting portion, 53A...First fitting portion, 53B...Second fitting portion, 54...Second engagement portion, 55...Fitting protrusion, 62A, 62B...Engagement portion (side wall), A...Rotation axis, Y-axis direction...First direction, X-axis direction...Second direction

Claims

1. a body having an injection nozzle portion extending in a first direction; a cap that houses the base of the intake and fixes and holds the body to the mouth of the container; an operating lever supported on the body so as to be swingable via a rotation shaft extending in a second direction perpendicular to the first direction; a pump having a cylinder with an opening for replacing air in the container through the intake and a piston that reciprocates in the cylinder in the first direction; Equipped with the operating lever has engaging portions provided on both sides in the second direction across a through-portion that penetrates along the first direction, The injection nozzle portion is an ejector having a fitting portion that is inserted into the through-hole in the first direction and fits into the engagement portion in the second direction.

2. The injection nozzle portion is An injection nozzle body, a protrusion extending downward from the injection nozzle body; and The fitting portion is a first fitting portion that is provided to protrude downward from the injection nozzle body, extends in the first direction, is inserted into the through-hole, and fits with the engaging portion in the second direction; a second fitting portion that extends in the first direction from a position on the protrusion that is lower than the first fitting portion and is inserted into the through-hole and is fitted with the engaging portion in the second direction; having The ejector of claim 1 .

3. a ring member attached to a tip end side of the cylinder in the first direction and holding the piston movably in the first direction; the ring member has one of a fitting hole and a fitting protrusion that fit together at a position facing the second fitting portion in the first direction, the second fitting portion has, at a position facing one of the fitting hole and the fitting protrusion, the other of the fitting hole and the fitting protrusion that fits with the one of the fitting hole and the fitting protrusion; The ejector of claim 2.

4. The intake has a rib portion extending in the first direction, the injection nozzle portion extends in the first direction toward the intake and has second engagement portions that engage with the rib portion on both sides in the second direction across the rib portion. An ejector according to any one of claims 1 to 3.

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