JP2003126739A - Trigger type liquid discharging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembling workability and to reduce cost by decreasing the number of parts constituting a trigger type fluid discharging device. SOLUTION: In a trigger pump 1 provided with a cylinder 10s provided in a body 10, a trigger 11 attached to the body 10s to be freely rotatable and a piston 12 freely slidable in the cylinder 10s corresponding to the movement of the trigger 11, the trigger 11 is engaged with the piston 12 and provided integrally with an elastic part 11d producing pressing force to pull back the piston from the inside of the cylinder 10s and the end part 11d(e) of the elastic part 11d is held by the inside surface 10W of the body 10. The elastic part 11d is formed ring like shaped to have a flexible part ΔL, the end part 11d(e) of the elastic part 11d is brought into contact with the inside surface 10W of the body 10. The inside surface 10W of the body 10 is provided with guides 10W1 and 10W2 for limiting the movement of the upper part and the right and left parts of the elastic part 11d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes a cylinder provided in a body, a trigger rotatably attached to the body, and a piston slidable in the cylinder according to the movement of the trigger. The present invention relates to a trigger type fluid ejector.

[0002]

2. Description of the Related Art A trigger type fluid ejector is one which causes a pump action by a user pulling a finger hooked on a trigger (trigger) to discharge the contents filled in the container body. .

FIG. 12 is an exploded sectional view showing a trigger pump exemplified as a conventional trigger type fluid discharger and a mouth portion of a container to which the trigger pump is attached.

The trigger pump 100 is a spray type that discharges the contents in a mist state, and the trigger 1 is attached to the body 101 so as to be rotatable around a pin Po.
02, a piston 103 slidable along the cylinder 101s that forms a closed space R1 in the cylinder 101s formed in the body 101 and contacts the part 102p of the trigger 102 by the urging force of the return spring So, and the body 101 An intake 104 provided with a dip tube Co for sucking up the contents, which is arranged in a channel 101r1 formed inside, and a discharge seated on a seat portion 104b provided in the intake 104 and elastically supported by the body 101 Valve 105 as a valve, and this valve 10
5, a ball Bo which forms a closed space R2 in the intake 104 and functions as an intake valve, and an opening of a discharge flow path 101r2 which discharges the contents filled in the closed space R2 formed in the body 101 are attached. The spin element 106, the nozzle 107 attached to the spin element 106, and the body 101
20 and a cap 109 for attaching to 20 via a packing 108.

Now, the operation of the trigger pump 100 will be described with reference to FIG.

First, the user triggers 1 in the direction of arrow d.
When 02 is pulled, the trigger 102 that rotates around the pin Po
102p of the piston 103 pushes the piston 103 into the cylinder 101s against the urging force of the return spring So, and the air in the closed space R1 is passed through the circulation hole 101h provided in the body 101 and the circulation hole 10 provided in the intake 104.
It is supplied to the closed space R2 in the intake 104 via 4h.

In the sealed space R2 supplied with air, the pressure rises, and the valve 105 is pushed upward against the biasing force of its spring portion 105s to separate it from the seat portion 104b provided in the intake 104, and the sealed space When the air in R2 is exhausted from the flow path 101r1 to the flow path 101r2, and then the user releases the trigger 102, the valve 105 becomes
The intake portion 1 is taken again by the biasing force of the spring portion 105s.
The seat portion 104b provided on the seat 04 is seated. At this time, the piston 103 is pulled back from the inside of the cylinder 101s by the urging force of the return spring So, and a negative pressure is generated in the closed space R1 and the closed space R2. Therefore, this negative pressure pushes up the ball Bo from the intake 104 and the container. The contents in 120 are sucked up from the dip tube Co and introduced into the closed space R1 and the closed space R2.

After that, when the user pulls the trigger 102,
Since the piston 103 pressurizes the contents in the closed space R1 and the closed space R2, the pressurized contents push up the valve 105 from the seat portion 104b of the intake 104 against the biasing force of the spring portion 105s. The discharge channel 10
Spin element 106 and nozzle 10 through 1r2
By turning between 7, the opening 107a of the nozzle 107
Is sprayed from.

[0009]

However, such a conventional trigger type fluid ejector is composed of a large number of parts as described with reference to FIG.
There is a problem that as the number of parts increases, the assembling work becomes complicated and the cost rises. In particular, the return spring So is usually made of metal such as stainless steel, and the piston 103 and the cylinder 1
Since it is placed between 01s, it is easy to touch the contents, and it is difficult to assemble it, and further, when it is discarded, it is necessary to separate it from other parts made of resin parts.

The present invention has been made in view of the above-mentioned problems, and by reducing the number of parts constituting the trigger type fluid discharger, the assembling workability is improved, the cost is reduced, and the disposal is performed. The purpose is to ensure the ease of.

[0011]

In order to solve this problem, a trigger type fluid ejector according to a first aspect of the present invention includes a cylinder provided in a body and a trigger rotatably attached to the body. In a trigger type fluid discharger including a piston slidable in the cylinder according to the movement of the trigger, the trigger engages with the piston and generates a biasing force for pulling the piston back from the cylinder. An elastic portion is integrally provided, and an end portion of the elastic portion is held by the inner wall of the body.

The trigger type fluid ejector according to the second invention is
In the first aspect of the invention, it is preferable that the elastic portion has a substantially ring shape having a stretchable portion.

The trigger type fluid ejector according to the third invention is
In the first or second invention, the end portion of the elastic portion is
It is preferable that the inner wall of the body is in contact with the inner wall of the body, and the inner wall of the body is provided with a guide that restricts the movement of the elastic portion in the upper portion and the left and right portions.

A trigger type fluid ejector according to a fourth invention is
The trigger type fluid discharger according to any one of the first to third inventions, an intake valve which is opened by pulling back the piston from the cylinder into a closed space defined between the piston and the cylinder, and draws fluid into the closed space, It is preferable that the cylinder is provided with a discharge valve that is opened by pushing the piston into the cylinder and discharges the fluid in the closed space, and the suction valve and the discharge valve are integrated parts.

The trigger type fluid ejector according to the fifth invention is
In any one invention of the said 4th invention, a piston is,
It is preferable to include a seat portion on which the discharge valve is seated, and an internal flow path that communicates with the closed space by separating the discharge valve from the seat portion.

The trigger type fluid ejector according to the sixth invention is
In the fourth or fifth aspect of the invention, it is preferable that the piston integrally has a spin element.

The trigger type fluid ejector according to the seventh aspect of the invention is
In any one of the first to sixth inventions, it is preferable that the body integrally has a connecting portion for connecting the body to the mouth portion of the container.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIGS. 1 and 2 are a front view and a side view, respectively, showing a container 30 to which a trigger pump 1 which is an embodiment of a trigger type fluid ejector according to the present invention is attached, and FIG. It is a front view which shows the state which attached only the trigger 11 in a form. 4 is a side view showing a cross section of the vicinity of the mouth portion 30a of the trigger pump 1 and the container 30 of FIG. 2, and FIG. 5 shows an enlarged cross-sectional view of a region X shown in FIG.

As shown in FIG. 4, the trigger pump 1 is a spray type which discharges the contents in a mist state, and the trigger 11 is rotatably attached to the body 10.
And a piston 12 which forms a closed space R1 in the cylinder 10s formed in the body 10 and is slidable along the cylinder 10s, and the piston 12 is pulled back from the cylinder 10s to depressurize the closed space R1 to open it. A suction valve 13 for drawing fluid into the closed space R1
A valve part B1 in which the piston 12 is pushed into the cylinder 10s to pressurize the sealed space R1 and the discharge valve 14 is opened to discharge the fluid in the sealed space R1; And a dip tube C1 mounted in the body 10 and extending along the axis of the container.

FIGS. 6A to 6D show the body 1 respectively.
0 is a front view and a side view of FIG. 0, and an AA sectional view and a bottom view of the body 10. 7A and 7B are a front view and a side view showing the vicinity of the mouth 30a of the container 30, respectively. 8 (a) and 8 (b) respectively show the trigger 1
It is a rear view and AA sectional drawing of 1. In addition, FIG.
(D) is respectively a front view and a side view of the piston 12, and an AA sectional view and a BB sectional view of the piston 12. 10A and 10B respectively show the nozzle 15
FIG. 3 is a front view of FIG.

As shown in FIG. 6, the body 10 includes an open space R2 for accommodating an elastic portion 11d of a trigger 11 which will be described later and a cylinder 10s which slidably accommodates a piston 12 which will be described later, together with the cylinder 10s. A flow channel 10r is formed to communicate with the dip tube C1. The peripheral portion 10a of the opening of the flow channel 10r faces the inside of the cylinder 10s as shown in FIG.
A seat portion on which the intake valve 13 is seated is configured to project from the side surface of s.

Further, the body 10 has a conventional cap 109.
Instead of (see FIG. 12), it has integrally a connecting portion 10c for connecting to the mouth portion 30a of the container 30. Connecting part 10
Although c may be screw-fitted as in the conventional case, the connecting portion 10c of the present embodiment is used for positioning with respect to the container 30, and as shown in FIGS. It has an opening 10n into which the convex portion 30p provided in 30a fits. In this case, as shown in FIGS. 1 to 3, the protrusion 30p of the container 30 can be attached to and positioned with respect to the container 30 simply by fitting it into the opening 10n, and the protrusion of the container 30 exposed from the opening 10n can be achieved. When the portion 30p is pressed inside the container, the body 10 is
Can be removed from.

If the connecting portion 10c is to be fitted to the convex portion 30p provided on the mouth portion 30a of the container 30, a concave portion where the side surface of the body 10 is not opened is provided instead of the opening 10n. Alternatively, the protrusion 30p of the container 30 may be fitted. On the contrary, the connecting portion 10c is provided with the mouth portion 30 of the container 30.
You may provide the convex part which fits in the opening or concave part provided in a.

As shown in FIG. 8, the trigger 11 has a grip 11g on which a user hooks his / her finger, and a pin portion 11p for rotating with respect to the body 10. Further, between the pin portion 11p and the grip 11g, a piston introduction portion 11h through which the piston 12 penetrates during assembly and a pin hole 11n with which a pin 12p provided on the piston 12 described later engages are formed. Furthermore, in the piston introducing portion 11h,
A rail portion 11r that guides a guide plate 12g integrally formed with a piston 12 described later is integrally formed, and a cutout portion 11c is formed around the pin hole 11h to facilitate assembling the pin 12p of the piston 12. Has been done.

In the present embodiment, the trigger 11 is integrally provided with an elastic member 11d for generating a biasing force for pulling the piston 12 back from the inside of the cylinder 10s near the pin portion 11p provided above the end thereof. As shown in FIG. 5, 11d (e) is held by the inner wall 11w of the open space R2 formed in the upper portion of the body 10. The elastic member 11d is not limited to the vicinity of the pin portion 11p, but may be formed in another portion.
When it is provided in the vicinity of the pin portion 11p, a biasing force can be efficiently obtained, and it is most preferable in terms of the layout for housing inside the body 10.

The elastic portion 11d of this embodiment has a substantially ring shape having a corrugated stretchable portion .DELTA.L. For example, a rod-shaped protruding part is bent or corrugated or has a substantially ring shape. It may be a mere thing, a shape in which the entire ring shape is curved into a substantially doglegged shape, or a shape like a pantograph.

Further, in this embodiment, the elastic portion 11
As shown in FIG. 5, the end portion 11d (e) of the d is the body 1
The inner wall 10w of the body 10 is a guide that presses the upper part of the inner wall 10w of the body 10 near the end 11d (e) of the elastic portion 11d to regulate the vertical movement of the elastic portion 11d. 10w1 and two guides 10w2 that extend toward the left and right portions thereof and restrict the lateral movement of the elastic portion 11d are integrally provided.

The piston 12 has the trigger 1 as described above.
1, which slides in the cylinder 10s according to the operation of No. 1, and the pin 12p that engages with the pin hole 11n formed in the trigger 11 on the outer peripheral portion thereof, as shown in FIG.
A cylinder-side sliding portion 12f that comes into contact with the inner peripheral surface of 0s is provided, while a seat portion 12a on which the discharge valve 14 is seated, which is partitioned by an annular groove 12n (see FIG. 5), is provided on the inner peripheral portion. It is provided with an internal passage 12r that functions as a discharge flow path 101r2 (see FIG. 12) provided in the conventional body 101 by communicating with the closed space R1 (see FIG. 5) by separating the discharge valve 14 from the seat portion 12a. Further, the piston 12 is integrally provided with a conventional spin element 106 (see FIG. 12) at a tip portion 12e to which the nozzle 15 is attached. In addition, the piston 12 has a stopper 12s extending in the axial direction thereof, and the stopper 12s is provided in a recess (stopper surface) 14s (see FIG. 5) formed in the discharge valve 14, that is, the valve part B1. By abutting, the pushing position of the piston 12 in the cylinder 10s is regulated.

As shown in FIG. 5, the valve part B1 is composed of an intake valve 13 which is a valve body which is an annular elastic member which expands outward, and a valve body which is an annular elastic member which also expands outward. It is integrally formed with the discharge valve 14. As shown in FIG. 5, when the valve part B1 is mounted between the piston 12 and the cylinder 10s, the suction valve 13 comes into contact with the opening peripheral portion 10a provided in the body 10 by its elastic force, and the suction space 13 is sealed from the flow passage 10r. R1 is closed, and the discharge valve 14 also has the piston 12 due to its elastic force.
Contacting the seat portion 12a of the internal passage 12r
Block 1 For this reason, the piston 12
When the closed space R1 is decompressed by pulling back from s, the suction valve 1
3 is a discharge valve when the negative pressure in the closed space R1 separates it from the peripheral portion 10a of the opening provided in the body 10 to open the closed space R1 and pushes the piston 12 into the cylinder 10s to pressurize the closed space R1. 14 is a piston 1 against the elastic force by the pressure compressed in the closed space R1.
The closed space R1 is opened apart from the second seat 12a.

FIG. 11 shows the nozzle 15 and the trigger 1.
1 shows an exploded view in which the piston 1, the piston 12 and the valve part B1 are arranged in the order of assembly. As shown in this figure, the above-mentioned four parts are assembled in a substantially straight line inside the body 10.

Here, the operation of the container 30 with the trigger pump 1 will be described in detail.

As shown in FIG. 4, when the user first pulls the trigger 11 in the direction of arrow d, the piston 12 responds to the movement of the trigger 11 against the elastic force of the elastic portion 11d of the trigger 11 and the cylinder 10s. It is pushed in to pressurize the closed space R1.

Then, the pressure rises in the sealed space R1, and the discharge valve 14 is pushed back against the elastic force thereof to be separated from the seat portion 12a provided on the piston 12, and the sealed space R1
The air inside is discharged from the internal flow path 12r to the nozzle 15, and then, when the user releases the trigger 11, the discharge valve 1
4 is again seated on the seat portion 12a due to its elastic force.
At this time, since the piston 12 together with the trigger 11 is pulled back from the inside of the cylinder 10s by the elastic force of the elastic portion 11d and a negative pressure is generated in the closed space R1, this negative pressure causes the suction valve 13 to resist the elastic force. The contents in the container 30 are sucked up from the dip tube C1 and introduced into the closed space R1 via the flow path 10r provided in the body 10 while being separated from the opening peripheral portion 10a.

After that, when the user pulls the trigger 11, the piston 12 pressurizes the contents in the closed space R1,
This pressurized content pushes the discharge valve 14 against the elastic force thereof from the seat portion 12a provided on the piston 12 to open it,
Piston tip 1 passes through internal flow passage 12r of piston 12.
2e and the nozzle 15 swirl to make the nozzle 15
Is sprayed from the opening 15a.

As is clear from the above description, in the trigger pump 1 according to the present invention, the trigger 11 is the piston 12.
Is integrally provided with an elastic portion 11d for generating a biasing force for pulling back the inside of the cylinder 10s, and the end portion 11d (e) of the elastic member 11d is held by the inner wall 10w of the body 10, so that the contents can be easily touched, Moreover, it is possible to reduce the number of metal return springs So that are difficult to assemble. Therefore, according to the present embodiment, it is possible to improve the assembling workability and reduce the cost by the amount of the return spring So reduced by sharing the trigger 11 and the elastic portion 11d.

In addition, in this embodiment, since the elastic portion 11d is integrated with the trigger 11, the body 10 and the trigger 1 are
1, the piston 12, the valve part B1, the nozzle 15, and the dip tube C1 can be the trigger pump 1 made of resin, so that manufacturing and disposal are easy. In particular, since all the parts constituting the trigger pump 1 are made of the same resin, it is not necessary to separate different resins, which is suitable for recycling. In addition,
As the resin used for the trigger 11, for example, PP (polypropylene) is used when cost is taken into consideration, and POM (polyacetal) is used when durability is taken into consideration.

Also, in this embodiment, the elastic portion 11d.
Is substantially ring-shaped having the stretchable portion .DELTA.L, and therefore, even if the elastic portion 11d contracts, it is hardly deformed in a direction other than the contracting direction. Therefore, in the open space R2 formed in the body 10, the elastic portion 11d. Almost no space is needed to guarantee the amount of deformation. Therefore, the trigger pump 1 can be downsized and the amount of resin can be suppressed to save resources.

Further, in this embodiment, the elastic portion 11
The end portion 11d (e) of d contacts the inner wall 10w of the body 10 as shown in FIG. 5, and the inner wall 10w of the body 10 restricts the movement of the elastic portion 11d at the upper portion and the left and right portions. Since the guides 10w1 and 10w2 are provided, the inner wall 11w of the body 10 is fixed to the elastic portion 11
Since it is not necessary to fix it to the end portion 11d (e) of d using an adhesive or the like, the assembly work is easy, and in addition, it is necessary to use different resins with different components for some parts and separate them. If it becomes, it is easy to disassemble.

In addition, the trigger pump 1 of this embodiment is
As shown in FIGS. 4 and 5, the intake valve 13 and the discharge valve 14 are integrated into a valve part B1, so that the number of parts forming the trigger pump 1, specifically, the intake 104 when compared with the prior art of FIG. , The valve 105 or the ball Bo can be reduced to a total of two. Therefore, according to the present embodiment, only the parts reduced by the common use of the intake valve 13 and the discharge valve 14,
It is possible to improve the assembly workability and reduce the cost. In this embodiment, the amount of resin can be reduced by at least the amount of intake 104 as compared with the conventional technique shown in FIG.

In particular, in this embodiment, the intake valve 13 and the discharge valve 14 are formed of a valve body made of an annular elastic member, so that the intake valve 13 and the discharge valve 1 are made common.
Since 4 can be integrally molded and its structure is simple, it can be manufactured easily and inexpensively.

As the combination of the valve parts B1, at least one of the intake valve 13 and the discharge valve 14 may be a valve body supported by a coil-shaped elastic member or an arm-shaped elastic member.

Further, in this embodiment, as shown in FIGS. 4 and 5, the piston 12 has a seat portion 12a on which the discharge valve 14 is seated.
And an internal flow path 12r communicating with the closed space R1 by separating the discharge valve 14 from the seat portion 12a, the discharge flow path through which the liquid or gas to be discharged flows, and the piston 12 Cylinder 1 for storing
0s is made common, and the resin amount corresponding to that is concretely shown in FIG.
Compared with the prior art, since the amount of resin for molding the cylinder 101s can be reduced, the cost can be further reduced and the amount can be reduced.

Further, in this embodiment, as shown in FIG. 9, the piston 12 is integrally provided with the spin element 106 (see FIG. 12). Therefore, the parts reduced by the common use of the piston 12 and the spin element 106 are provided. Therefore, the assembling workability can be improved and the cost can be reduced.

Further, in this embodiment, the body 10 is placed in the container 3
By integrally including the connecting portion 10c for connecting to the zero mouth portion 30a, the number of parts forming the trigger pump 1 can be reduced. Therefore, according to the body 10 of the present embodiment, the conventional cap 109 (see FIG.
2) and the parts reduced by sharing the body 10 can improve the assembly workability and reduce the cost.

Further, the connecting portion 10c is, for example, a container 30.
Fitting by the protrusions 30p of the container 30 and the openings 10n provided in the body 10, or the protrusions 30p of the container 30 and the body 10
Since the positioning of the trigger pump 1 with respect to the container 30 is facilitated as well as the positioning thereof with respect to the container 30 by performing the positioning such as fitting by the recess provided in the container 30, the assembling workability can be further improved.

The above description merely shows the preferred embodiments of the present invention, and those skilled in the art can make various modifications within the scope of the claims. For example, the trigger pump 1 has a piston It may be a type that does not integrally include 12 and the spin element, but discharges the contents such as emulsion as they are.

[0048]

The trigger type fluid ejector according to the first aspect of the invention is integrally provided with an elastic portion for generating a biasing force for the trigger to pull back the piston from the inside of the cylinder, and the end portion of this elastic member is the inner wall of the body. By holding the return spring, it is possible to reduce the number of return springs that are easy to touch and difficult to assemble. Therefore, according to the first aspect of the invention, it is possible to improve the assembling workability and reduce the cost by the amount of the return spring reduced by sharing the trigger and the elastic portion.

In addition, according to the first aspect of the invention, since the elastic portion is integrated with the trigger, a trigger type fluid ejector in which all parts are made of resin can be provided, and therefore the manufacturing and disposal are easy. In particular, since all the constituent parts are made of the same resin (for example, polypropylene), it is not necessary to separate different resins having different components, which is suitable for recycling.

According to a second aspect of the invention, in the first aspect of the invention, since the elastic portion integral with the trigger has a substantially ring shape having an expanding / contracting portion, even if the elastic portion contracts, it is almost in a direction other than the contracting direction. Since it does not deform, in the body,
Almost no space is required to guarantee the amount of deformation in the elastic part. For this reason, resource saving can be achieved by reducing the resin amount as well as downsizing the trigger type fluid ejector.

According to a third aspect of the present invention, in the first or second aspect of the invention, the end of the elastic portion integral with the trigger is in contact with the inner wall of the body, and the inner wall of the body has an upper portion and an upper portion of the elastic portion. Since it is equipped with a guide that regulates the movement in the left and right parts, it is not necessary to fix the inner wall of the body to the end of the elastic part with an adhesive, etc. If different resins are used for parts and it is necessary to separate them, disassembly is easy.

In the fourth invention, the suction valve for drawing the fluid into the closed space formed between the piston and the cylinder and the discharge valve for discharging the fluid in the closed space are integrated into one part. As a result, it is possible to reduce the number of parts constituting the trigger type fluid ejector. Therefore, according to the fourth aspect of the present invention, it is possible to improve the assembly workability and reduce the cost by the amount of the parts reduced by sharing the intake valve and the discharge valve.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the piston is provided with a seat portion on which a discharge valve is seated, and an internal flow path that communicates with a closed space by separating the discharge valve from the seat portion. As a result, the flow passage for the liquid or gas to be discharged and the cylinder for accommodating the piston can be made common, and the amount of resin can be reduced accordingly, further reducing the cost and reducing the amount. Also helps.

According to a sixth aspect of the invention, in the first or second aspect of the invention, since the piston is integrally provided with a spin element, the workability of assembling is reduced by the parts reduced by the common use of the piston and the spin element. It is possible to improve the cost and reduce the cost.

According to a seventh aspect of the invention, in any one of the first to sixth aspects of the invention, the body has an integral connecting portion for connecting the body to the mouth of the container.
The number of parts forming the fluid ejector can be reduced. Therefore, according to the seventh aspect, it is possible to improve the assembly workability and reduce the cost by the amount of the parts reduced by the common use of the body and the cap.

[Brief description of drawings]

FIG. 1 is a front view showing a container to which a trigger pump according to an embodiment of the present invention is attached.

FIG. 2 is a side view showing a container to which the trigger pump of the same embodiment is attached.

FIG. 3 is a front view showing a state in which only a trigger is attached in the same embodiment.

FIG. 4 is a side view showing a cross section of the trigger pump 1 of FIG. 2 and the vicinity of the mouth 30a of the container 30.

5 shows an enlarged cross-sectional view in a region X shown in FIG.

6A to 6D are respectively a front view and a side view of a body, a sectional view taken along the line AA of the body, and a bottom view.

7 (a) and 7 (b) are respectively a front view and a side view showing the vicinity of the mouth of the container.

8A and 8B are a rear view and a cross-sectional view taken along line AA of the trigger, respectively.

9A to 9D are respectively a front view and a side view of the piston, and a cross-sectional view of the piston taken along the line AA and B-.
It is a B sectional view.

10A and 10B are respectively a front view of the nozzle and a cross-sectional view taken along the line AA of the nozzle.

FIG. 11 is an exploded view in which a nozzle, a trigger, a piston, and a valve part are arranged in an assembling order.

FIG. 12 is an exploded cross-sectional view showing a trigger pump exemplified as a conventional trigger-type fluid ejector and a mouth of a container to which the trigger pump is attached.

[Explanation of symbols] 1 trigger pump 10 body 10c connecting part 10n opening 10s cylinder 11 Trigger 11d elastic part 11d (e) end 12 pistons 12e Piston tip (spin element) 12r internal passage 13 Inhalation valve 14 Discharge valve 15 nozzles 30 containers 30a mouth 30p convex part B1 valve parts C1 dip tube R1 closed space

Claims (7)

[Claims] 1. A trigger-type fluid including a cylinder provided in a body, a trigger rotatably attached to the body, and a piston slidable in the cylinder according to the movement of the trigger. In the dispenser, the trigger integrally includes an elastic portion that engages with the piston and generates a biasing force for pulling the piston back from the inside of the cylinder, and an end portion of the elastic portion is held by an inner wall of the body. A trigger type fluid ejector characterized in that 2. The trigger type fluid ejector according to claim 1, wherein the elastic portion has a substantially ring shape having a stretchable portion. 3. An end portion of the elastic portion is in contact with an inner wall of the body, and the inner wall of the body is provided with a guide for restricting movement of the elastic portion at upper and left and right portions. The trigger type fluid ejector according to claim 1. 4. The suction type fluid discharger is opened by pulling back the piston from the cylinder into a closed space defined between the piston and the cylinder, and sucked in to draw the fluid into the closed space. Valve and
4. A discharge valve for discharging the fluid in the closed space, which is opened by pushing the piston into the cylinder, and the suction valve and the discharge valve are integrated parts. The trigger type fluid ejector according to claim 1. 5. The piston according to claim 4, wherein the piston includes a seat portion on which the discharge valve is seated, and an internal flow path that communicates with the sealed space when the discharge valve is separated from the seat portion. The described trigger type fluid ejector. 6. The trigger type fluid ejector according to claim 4, wherein the piston integrally includes a spin element. 7. The trigger type fluid ejector according to claim 1, wherein the body integrally has a connecting portion for connecting the body to the mouth portion of the container.