Trigger-type dispenser with stopper

Abstract

To prepare a configuration as a biasing member of a pump mechanism for a stopper for preventing a nozzle head from being pushed down, thereby eliminating the need for separation at the time of disposal and providing (maintaining) a biasing force to the biasing member for a long period of time.SOLUTION: The trigger-type dispenser according to the invention comprises a base cap 2, a base 3, a hollow stem 41, a nozzle head 4, and an operation lever 5 pivotably supported on a support arm 61 connected to the base 3. The content in a container body 1 is dispensed from the nozzle head 4 by towing and turning the operation lever 5 to push the nozzle head 4. The base 3 is provided with a stopper 6 which is rotatably held on the side wall thereof to restrict the nozzle head from being pushed down when in contact with the lower surface of the nozzle head 4 and to allow the nozzle head to be pushed down when being separated from the lower surface of the nozzle head 4. The stopper 6 is provided with a biasing part 67 for elastically supporting the nozzle head 4 together with the operation lever 5 only when the lock state of the nozzle head 4 is released.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a trigger-type discharger including a nozzle head that discharges a content composed of a liquid material through a nozzle portion, and a stopper that restricts the depression of the nozzle head.

Background Art

[0002] Conventionally, as a container for discharging a content composed of a liquid material such as cosmetics and detergents, a trigger-type liquid ejector that sucks up the content from inside the container body by operating a trigger and discharges it from a nozzle is known.

[0003] In such a container, since the pump is configured to operate by pulling the trigger so that the content can be easily discharged through the nozzle, a stopper has been proposed to prevent the trigger from being unintentionally operated during distribution, handling, etc. (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the above trigger-type liquid ejector, generally, in order to bias the hollow stem constituting the pump upward, a biasing member made of a metal material such as a spring is housed in the cylinder of the pump. When disposing of such an ejector, it is necessary to separate the biasing member made of a metal material from a member made of another synthetic resin material, but there is a problem in that it is difficult to take out the biasing member from the cylinder and it is very time-consuming.

[0006] Therefore, conventionally, using a synthetic resin material instead of a metal material for the biasing member has also been considered. However, a biasing member made of a synthetic resin material has low durability. In particular, when the biasing member is kept in a compressed and deformed state for a long time during the distribution or storage of the dispenser, the biasing member sags in that shape, and there is a problem in that the biasing force of the biasing member cannot be maintained.

[0007] Therefore, in the present invention, a stopper for preventing unintentional depression of the nozzle head is provided with a configuration as a biasing member of a pump mechanism, which can save the labor of sorting at the time of disposal, and a trigger-type dispenser provided with a stopper capable of applying (maintaining) a biasing force to the biasing member over a long period of time is provided.

Means for Solving the Problems

[0008] The trigger-type dispenser provided with the stopper of the present invention developed to achieve the above object is mounted on the neck portion of a container body for containing a content, a base cap having an opening on the top wall, a cylindrical base provided on the top wall of the base cap and having a through-opening connected to the opening, a nozzle head having a hollow stem inserted through the opening and the through-opening and held in an upright posture, and located above the base cap, having an engaging portion capable of engaging with a shaft portion formed on the outer wall of the nozzle head, and an operation lever rotatably supported at the tip of a support arm connected to the cylindrical base via a pivot, By pulling and rotating the operation lever about the pivot, the nozzle head is repeatedly pushed in together with the hollow stem to drive a pump mechanism suspended and held inside the neck portion of the container body, and the content inside the container body is discharged from the nozzle portion of the nozzle head. It is a trigger-type dispenser, The cylindrical base is rotatably held via an engagement shaft portion provided on its side wall, abutted against the lower surface of the nozzle head to restrict the downward pressing of the nozzle head and the hollow stem, and maintained in a locked state. On the other hand, when separated from the lower surface of the nozzle head, a stopper is provided to release the locked state and allow the downward pressing of the nozzle head and the hollow stem. The stopper is characterized in that a biasing portion is provided which elastically supports the nozzle head and the hollow stem together with the operation lever only when the locked state of the nozzle head is released.

[0009] In the trigger-type discharger provided with the stopper of the present invention, it is preferable that the biasing portion is composed of a cantilever spring piece which, when the locked state of the nozzle head is released, abuts its free end below the linking portion and the shaft portion to elastically support the nozzle head and the hollow stem together with the operation lever.

[0010] Also, in the trigger-type discharger provided with the stopper of the present invention, it is preferable that the free end has a locking claw portion which catches on the linking portion and the shaft portion when the locked state of the nozzle head is released, and positions the spring piece with respect to the linking portion and the nozzle head.

[0011] Also, in the trigger-type discharger provided with the stopper of the present invention, it is preferable that the biasing portion is composed of a cantilever spring piece which, when the locked state of the nozzle head is released, abuts its free end against the inner surface of the gripping portion of the operation lever to elastically support the nozzle head and the hollow stem together with the operation lever.

[0012] Further, in the trigger-type dispenser provided with the stopper of the present invention, the stopper includes a pair of legs that can be held in an upright posture at opposing positions sandwiching the hollow stem, and is provided between the pair of legs. When the pair of legs are in the upright posture, it fits onto the body portion of the hollow stem and a stopper body whose upper end surface can abut against the lower surface of the nozzle head, and is connected to the side ends of the pair of legs respectively, and has a peripheral wall having a U-shaped configuration for housing the support arm inside. The peripheral wall preferably has a window hole that guides the rotation of the stopper along an edge to an induction convex portion formed on the support arm when the stopper is rotated.

[0013] Furthermore, in the trigger-type dispenser provided with the stopper of the present invention, the window hole preferably has fitting recesses for undercut fitting the induction convex portions at at least two places at the dead-end of the edge portion.

Advantages of the Invention

[0014] In the trigger-type dispenser provided with the stopper of the present invention, a biasing portion is provided on the stopper that regulates the pushing down of the nozzle head and the hollow stem. Due to the separation posture of the stopper from the lower surface of the nozzle head, the state in which the regulation of the pushing down of the nozzle head and the hollow stem by the stopper is released (hereinafter, the state in which the pushing down of the nozzle head and the hollow stem by the stopper is regulated is also referred to as the "locked state", and the state in which the regulation is released is also referred to as the "unlocked state"). Only in this state, the biasing portion is configured to abut against the lower end of the nozzle head or the operation lever and elastically support the nozzle head and the hollow stem from below together with the operation lever.

[0015] Therefore, according to the trigger-type dispenser provided with the stopper of the present invention, the biasing portion only needs to be provided so as to elastically support the nozzle head and the hollow stem from below together with the operation lever only in the unlocked state. There is no risk that the biasing portion will sag while being compressed and deformed over a long period during distribution or storage. When using the dispenser, it is possible to prevent the biasing portion from being difficult to elastically deform and recover.

[0016] Further, according to the present invention, as the pressing portion presses down the nozzle head and the hollow stem, it abuts against the lower end of the nozzle head or the operation lever and compresses, while by releasing the pressing force, an upward biasing force is exerted to move the nozzle head from the bottom dead center toward the top dead center, and the posture of the nozzle head at the top dead center can be maintained as it is. Therefore, there is no need to use a biasing member made of a metal material such as a spring that has been incorporated in a cylinder to apply a biasing force to the hollow stem, and the entire pump mechanism can be formed of a synthetic resin material, saving the labor of sorting at the time of disposal.

[0017] Furthermore, according to the present invention, by making the biasing portion a spring piece, when the nozzle head is pressed down with the spring piece in contact with the lower end of the nozzle head or the operation lever, it can be easily elastically deformed without fear of breakage or the like, and it can quickly return when the pressing on the nozzle head is released.

[0018] Furthermore, according to the present invention, a locking claw portion is provided at the free end of the spring piece, and in the unlocked state, by causing the locking claw portion to catch on the fitting position between the outer wall (shaft portion) of the nozzle head and the operation lever (linkage portion), when the stopper is rotated, the spring piece can be prevented from coming off from the lower end position of the nozzle head, and the spring piece can be arranged at a predetermined position.

[0019] Furthermore, according to the present invention, by providing a window hole in the peripheral wall of the stopper and rotating the stopper while guiding convex portions are arranged along the edge of the window hole, the stopper can be rotated stably and smoothly. In particular, by providing a fitting recess at the end of the edge of the window hole where it ends, and making the guiding convex portions be undercut-fitted into the fitting recess, the stopper can be maintained in the locked state and the unlocked state.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

[0021] Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view showing an embodiment of a trigger-type dispenser equipped with a stopper according to the present invention in a state where the pushing down of the nozzle head by the stopper is restricted (locked state), (a) is a plan view, and (b) is a side view. FIG. 2 is a view showing an embodiment of a rotating part among the stoppers constituting the trigger-type dispenser equipped with the stopper shown in FIG. 1, (a) is a plan view, (b) is a front view, and (c) is a right side view. FIG. 3 is a view showing the structure inside the operation lever of the trigger-type dispenser equipped with the stopper of FIG. 1 in a cross section at the A-A position in FIG. 1(c) (only the operation lever is shown in cross section), (a) is a locked state by the stopper, (b) is an unlocked state by the stopper, and (c) is a view showing a state where the operation lever is pushed backward to push down the nozzle head. FIG. 4 is another embodiment of a dispenser equipped with a stopper according to the present invention, and is a view showing the structure inside the operation lever in a cross section at the A-A position in FIG. 1(c) (only the operation lever is shown in cross section), (a) is a locked state by the stopper, (b) is an unlocked state by the stopper, and (c) is a view showing a state where the operation lever is pushed backward to push down the nozzle head.

[0022] In FIGS. 1 to 4, reference numeral 1 denotes a container body for storing contents, reference numeral 2 denotes a base cap screwed to the neck portion of the container body 1, reference numeral 3 denotes a cylindrical base provided on the top wall 22 of the base cap 2, reference numeral 4 denotes a nozzle head located above the base cap and connected to a hollow stem, reference numeral 5 denotes an operation lever for pressing the nozzle head 4 and discharging the contents from the nozzle portion 42, and reference numeral 6 denotes a stopper for switching the nozzle head 4 between a locked state and an unlocked state.

[0023] The container body 1 has a filling space for the contents inside and is provided with a cylindrical neck portion at the top. The container body 1 can be manufactured using a material such as synthetic resin, but the material of the material is not particularly limited. Further, in the present embodiment, a cylindrical container body 1 is shown as an example, but the shape of the container body can be appropriately changed based on the type of contents, the design of the container, the use, etc., and is not limited to the illustrated shape.

[0024] The base cap 2 has a peripheral wall 21 and a top wall 22. The female screw provided on the inner wall surface of the peripheral wall 21 is screwed onto the male screw provided on the outer peripheral wall of the neck portion of the container body 1, and is detachably attached by an undercut fitting. The base cap 2 can be manufactured using a material such as synthetic resin, but the material of the material is not particularly limited. Further, in the present embodiment, a cylindrical one is shown as an example, but it is not limited to the illustrated shape.

[0025] The central portion of the top wall 22 has an opening, and a hollow stem 41 for driving a pump mechanism that is suspended and held inside the neck portion of the container body 1 by an undercut fitting or the like is inserted therethrough.

[0026] The top wall 22 is provided with a cylindrical base portion 3 having a through-opening connected to the opening. In the present embodiment, an example in which a large-diameter cylindrical portion 3a and a small-diameter cylindrical portion 3b disposed on the upper surface of the large-diameter cylindrical portion 3a are combined as the base portion 3 is shown, but it is not limited to the illustrated one. The hollow stem 41 is inserted through the opening of the top wall 22 and the through-openings of the base portion 3 (the large-diameter cylindrical portion 3a and the small-diameter cylindrical portion 3b), and is held so as to stand upright from the upper end portion of the base portion 3.

[0027] As the pump mechanism, by pushing in the nozzle head 4, it is driven through the hollow stem 41 connected to the nozzle head 4, and the content accommodated in the container body 1 is sucked into the cylinder through the suction pipe, and pressurized and compressed to be discharged from the nozzle portion 42 in the nozzle head 4. A conventionally known one (for example, FIG. 2 of Japanese Patent Application Laid-Open No. 2009-131813) can be applied.

[0028] The nozzle head 4 is attached to the upper end of the hollow stem 41. The nozzle head 4 includes a nozzle portion 42 that discharges the content pumped from inside the container body 1 to the outside through the internal flow path of the hollow stem 41, and a fitting cylinder (not shown) provided at the base end portion of the nozzle portion 42 and fixing the nozzle head 4 to the hollow stem 41 by fitting to the inner peripheral surface of the hollow stem 41. Further, on the outer wall of the nozzle head 41, in the vicinity of the fitting position with the hollow stem 41, a shaft portion 43 that can be linked to an operation lever 5 described later is provided.

[0029] The operation lever 5 is composed of a grip portion 51 that can be gripped by the user's fingers and pulled backward, and a support portion 52 that is connected to the grip portion 51 and holds the operation lever 5 rotatably. The grip portion 51 and the support portion 52 are integrally formed by a top surface wall 53 and a pair of side walls 54 that are vertically held from both side edges of the top surface wall 53 and are substantially parallel to the rotation direction of the operation lever 5, and the inside is hollow. An opening 53a is provided in the top surface wall 53 between the grip portion 51 and the support portion 52, and as shown in Fig. 1(a), the nozzle portion 42 of the nozzle head 4 is exposed to the outside through the opening 53a.

[0030] The support portion 52 is provided with an engagement portion 55 that is a recess capable of engaging with the shaft portion 43 provided on the nozzle head 4, and an engagement portion 56 that is a recess capable of engaging with a pivot 62a provided on a stopper 6 described later, which is rotatably held by the base portion 3. As shown in Fig. 3(c), when the grip portion 51 of the operation lever 5 is pulled backward with a finger, the engagement portion 55 slides around the shaft portion 43, and the operation lever 5 rotates about the pivot 62a via the engagement portion 56, whereby the nozzle head 4 is pushed down.

[0031] The stopper 6 is composed of a fixed part including a support arm 61 extending obliquely upward from the side wall 31 of the cylindrical base 3 and a support part 62 erected in the direction of the axis L of the container body 1 from the end of the support arm 61, a pair of legs 63 positioned opposite to each other with the hollow stem 41 interposed therebetween, a stopper body 64 positioned between the pair of legs 63, a peripheral wall 65 having a U-shaped configuration that is respectively connected to one side end of the pair of legs 63 and houses the support arm 51 inside, and a biasing part 67 composed of spring pieces respectively held in a cantilever manner at the other side end of the pair of legs 63, and a rotating part.

[0032] The rotating part of the stopper 6 is configured to be integrally rotatable by engaging an opening 63a provided at the lower part of the pair of legs 63 with a pair of engaging shaft parts 32 provided on the side wall 31 of the base 3. Further, as shown in FIGS. 1(b) and 3(a), the stopper 6 aligns the stopper body 64 having a C-shaped configuration in plan view with the body part of the hollow stem 41 with its elastic deformation, and can regulate the pushing-in of the nozzle head 4 (locked state) by bringing its upper end surface into contact with the lower surface of the nozzle head 4. On the other hand, as shown in FIG. 3(b), the stopper 6 is configured to be able to release the regulation of the pushing-in of the nozzle head 4 (unlocked state) by separating the stopper body 64 from the body part of the hollow stem 41.

[0033] The stopper body 64 may have any shape as long as it can be detachably fitted to the body part of the hollow stem 41 between the nozzle head 4 and the base 3, contacts the nozzle head 4 from below, and contacts the base 3 from above to regulate the downward pushing-in of the nozzle head 4, and is not limited to the illustrated one.

[0034] The support arm 61 is U-shaped. When the stopper 6 is separated from the body portion of the hollow stem 41 as shown in Fig. 3(b) to be in the unlocked state, the stopper body 64 can be accommodated inside the support arm 61. Note that the support arm 61 may be composed of a pair of plate-like pieces, and the stopper body 64 may be accommodated between the plate-like pieces. Further, a guiding convex portion 61a is provided on the upper outer wall of the support arm 61.

[0035] The support portion 62 is provided with a pivot 62a at the upper end, and the engaging portion 56 of the operating lever 5 is rotatably fitted to the pivot 62a. Note that the support portion 62 may be integrally formed with the support arm 61.

[0036] The peripheral wall 65 having a U-shape has a window hole 66 on at least one side wall surface, and a pair of guiding convex portions 61a provided on the support arm 61 are engaged with the edge portion of the window hole 66. Thereby, the stopper 6 can be rotated while the edge portion of the window hole 66 is along the guiding convex portion 61a, and the window hole 66 serves as a guiding mechanism to rotate the stopper 6 in the desired direction without wobbling left and right. Further, fitting recesses 66a are provided at at least two places at the end points of the edge portion of the window hole 66, and by undercut fitting with the guiding convex portion 61a, the stopper 6 can be stably held in the locked state shown in Fig. 3(a) and the unlocked state shown in Fig. 3(b). Further, the peripheral wall 65 has a protruding portion 65a with a stepped portion formed at the upper end on the back side (the side opposite to the extending direction of the biasing portion 67). Since the protruding portion 65a is easy to grip with fingers and the stepped portion serves as an anti-slip, the stopper 5 can be easily rotated by fingers.

[0037] The biasing portion 67 is composed of spring pieces each formed by a pair of annular springs that are cantilever-supported from the side ends of the pair of leg portions 63. The biasing portion 67 is configured such that, only in the unlocked state shown in Fig. 3(b) where the stopper 6 is rotated about the engagement shaft portion 32 as a base point to separate the stopper main body 64 from the body portion of the hollow stem 41, the free end abuts below the engagement fitting portion between the linking portion 55 of the operation lever 5 and the shaft portion 43 of the nozzle holder 4, and the nozzle head 4 is elastically supported from below together with the operation lever 5. Therefore, in the locked states shown in Fig. 1(b) and Fig. 3(a) where the downward pressing of the nozzle head 4 is restricted during flow or storage, etc., no load is applied to the biasing portion 67, and the elastic deformation and restoring force of the biasing portion 67 can be maintained over a long period of time.

[0038] As shown in Fig. 3(c), when the nozzle head 4 is pushed down by the rotation of the operation lever 5 about the pivot 62a as a base point, the biasing portion 67 is compressed and deformed, and when the pressing of the nozzle head 4 is released, the biasing portion 67 returns to its original position by the biasing force (elastic restoring force) directed upward, and the nozzle head 4 can be pushed up from the bottom dead center to the top dead center together with the operation lever 5, enabling reciprocating movement. The biasing portion 67 is preferably composed of a synthetic resin material having high elasticity, and may be integrally formed with other members constituting the stopper 6 or may be formed separately.

[0039] In the present embodiment, the biasing portion 67 is composed of an annular spring, the spring piece body is arranged in a double layer, and the annular body has a window hole formed therebetween. Therefore, when the nozzle head 4 is pushed down, the annular body can be easily elastically deformed, the biasing force when the pressing is released can be improved, and the biasing portion 67 can be prevented from being difficult to elastically deform and restore (such as sagging due to deterioration over time), thereby improving durability. Note that the biasing portion 67 is not limited to what is shown, and as long as the free end abuts below the engagement fitting portion between the linking portion 55 of the operation lever 5 and the shaft portion 43 of the nozzle holder 4 in the unlocked state shown in Fig. 3(b) and can elastically support the nozzle head 4 from below, it may have any shape.

[0040] Further, a locking claw portion 67a is provided at the free end of the biasing portion 67. The locking claw portion 67a is configured to catch on the linking fitting portion between the linking portion 55 of the operation lever 5 and the shaft portion 43 of the nozzle holder 4 in the unlocking state shown in FIG. 3(b), and when the stopper 6 is rotated, the biasing portion 67 is prevented from coming off from below the linking fitting portion.

[0041] To discharge the contents in the container body 1 from the locked state shown in FIG. 3(a), first, as shown in FIG. 3(b), the stopper 6 is rotated about the engaging shaft portion 32, and the stopper body 64 of the stopper 6 is elastically deformed to separate from the body portion of the hollow stem 41 (between the nozzle head 4 and the small-diameter cylinder portion 3b) to set it in the unlocking state.

[0042] Next, as shown in FIG. 3(c), when the gripping portion 51 of the operation lever 5 is pulled backward by a finger, the linking portion 55 of the support portion 52 slides around the shaft portion 43 provided on the nozzle head 4, and the operation lever 5 rotates about the pivot 62a via the engaging portion 56, and the nozzle head 4 is pushed downward. As a result, as described above, the pump mechanism is driven through the hollow stem 41 connected to the nozzle head 4, and by repeating this, the contents in the container body 1 are discharged from the nozzle portion 42 of the nozzle head 4. At this time, the biasing portion 67 of the stopper 6 is also compressed and deformed as the operation lever 5 rotates. However, when the pressing on the gripping portion 51 of the operation lever 5 is released, the elastic restoring force of the biasing portion 67 pushes up the nozzle head 4 and the operation lever 5 to restore them from the bottom dead center to the top dead center.

[0043] FIG. 4 is a view showing another embodiment of the discharge container according to the present invention. The description of the same parts as in the previous embodiment will be omitted. In this embodiment, the biasing portion 67 is composed of spring pieces each formed of an annular spring extending from the side ends of a pair of leg portions 63. Only in the unlocked state shown in FIG. 4(b) where the stopper 6 is rotated about the engagement shaft portion 32 and the stopper body 64 is separated from the body portion of the hollow stem 41, the free end of the biasing portion 67 abuts against the inner surface (the lower surface of the top surface wall 53) of the gripping portion 51 of the operation lever 5, and the nozzle head 4 is configured to be elastically supported downward together with the operation lever 5.

[0044] As shown in FIG. 4(c), when discharging the content, if the gripping portion 51 of the operation lever 5 is pulled backward by a finger, the linking portion 55 of the support portion 52 slides around the shaft portion 43 provided on the nozzle head 4, and the operation lever 5 rotates about the pivot shaft 62a provided on the support portion 62 of the stopper 6 via the engaging portion 56, and the nozzle head 4 is pushed downward. At this time, the biasing portion 67 is compressed and deformed while sliding along the inner surface of the gripping portion 51 as the operation lever 5 rotates. However, when the pressing of the gripping portion 51 of the operation lever 5 is released, the elastic restoring force of the biasing portion 67 pushes up the nozzle head 4 and the operation lever 5 and restores them from the bottom dead center toward the top dead center. Note that it is important that the discharger having the structure shown in FIG. 4 is configured such that when the lock of the nozzle head 4 is released, the shaft portion 43 provided on the nozzle head 4 and the linking portion 55 provided on the operation lever 5 are surely held in the linked state, whereby the nozzle head 4 can be elastically supported together with the operation lever 5.

Industrial Applicability

[0045] The trigger-type discharger provided with the stopper of the present invention can be suitably used as a container for filling liquid, cream, viscous, etc. food and drink products, cosmetics, pharmaceuticals, detergents, and the like.

Explanation of Reference Numerals

[0046] 1 Container body 2 Base cap 21 Peripheral wall 22 Top surface wall 3 Base 3a Large-diameter cylindrical portion 3b Small-diameter cylindrical part 31 Side wall 32 Engaging shaft part 4 Nozzle head 41 Hollow stem 42 Nozzle part 43 Shaft part 5 Operating lever 51 Gripping part 52 Support part 53 Top wall 53a Opening 54 Side wall 55 Linking part 56 Engaging part 6 Stopper 61 Support arm 61a Guide convex part 62 Support part 62a Pivot 63 Leg part 63a Opening 64 Stopper body 65 Peripheral wall 65a Protruding part 66 Window hole 66a Fitting concave part 67 Biasing part (spring piece) 67a Locking claw part

Claims

1. A base cap attached to the neck portion of a container body for containing contents, having an opening on the top wall, a cylindrical base provided on the top wall of the base cap and having a through opening connected to the opening, a nozzle head having a hollow stem inserted through the opening and the through opening and held in an upright position, and located above the base cap, an operating lever having an engaging portion engageable with a shaft portion formed on the outer wall of the nozzle head and pivotally supported at the tip of a support arm connected to the cylindrical base via a pivot, and by pulling and pivoting the operating lever about the pivot to repeatedly push down the nozzle head together with the hollow stem, driving a pump mechanism suspended and held inside the neck portion of the container body to discharge the contents inside the container body from a nozzle portion of the nozzle head, a trigger-type discharger, wherein the cylindrical base is rotatably held via an engaging shaft portion provided on its side wall, abuts against the lower surface of the nozzle head to restrict pushing down of the nozzle head and the hollow stem, and maintains a locked state, while being disengaged from the lower surface of the nozzle head to release the locked state and allow pushing down of the nozzle head and the hollow stem, and includes a stopper, the stopper is provided with a biasing portion that elastically supports the nozzle head and the hollow stem together with the operating lever only when the locked state of the nozzle head is released, a trigger-type discharger comprising a stopper characterized by this.

2. The trigger-type discharger comprising a stopper according to claim 1, wherein the biasing portion comprises a cantilever spring piece that abuts its free end below the engaging portion and the shaft portion when the locked state of the nozzle head is released to elastically support the nozzle head and the hollow stem together with the operating lever.

3. The trigger-type discharger comprising a stopper according to claim 2, wherein the free end has a locking claw portion that catches on the engaging portion and the shaft portion when the locked state of the nozzle head is released, and positions the spring piece with respect to the engaging portion and the nozzle head.

4. When the locked state of the nozzle head is released, the biasing portion is a cantilever spring piece that abuts the free end against the inner surface of the gripping portion of the operation lever to elastically support the nozzle head and the hollow stem together with the operation lever. The trigger-type ejector comprising the stopper according to claim 1, characterized in that it consists of.

5. The stopper includes a pair of legs that can be held in an upright posture at opposing positions sandwiching the hollow stem, and is provided between the pair of legs. When the pair of legs are in the upright posture, it fits onto the body portion of the hollow stem and a stopper body whose upper end surface can abut against the lower surface of the nozzle head, and is connected to the side ends of the pair of legs respectively, and has a peripheral wall having a U-shape for housing the support arm inside. The peripheral wall has a window hole that guides the rotation of the stopper by running along the edge of the guide convex portion formed on the support arm when the stopper is rotated. The trigger-type ejector comprising the stopper according to claim 1, characterized in that it has.

6. The window hole has fitting recesses for undercut fitting the guide convex portion at at least two places at the end points of the edge portion. The trigger-type ejector comprising the stopper according to claim 5, characterized in that it has.

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