JPH08299864A - Manual trigger type dispenser and its nozzle - Google Patents

Abstract

PURPOSE: To improve handiness without deteriorating the functionality of a nozzle cover type childproof mechanism. CONSTITUTION: A stopper 54 is formed integrally so as to be freely swingably toward a trigger 12, at the lower end of the operation piece 52 of a cantilever beam 46 through a hinge 55. While the stopper 54 is swinging toward the trigger 12, the downward swing of the beam 46 is prevented by the installation and maintenance of the stopper 54 between the operation piece 52 and the trigger 12 associated with the bond between a trigger front and a engaging projection 58.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual trigger type dispenser for sucking and pressurizing a liquid in a container into a cylinder by a reciprocating motion of a piston which is interlocked with swinging of a trigger, and a nozzle thereof.

[0002]

2. Description of the Related Art In recent years, a manual trigger type dispenser which pressurizes and discharges a liquid by reciprocating movement of a piston linked with the swing of a trigger without using CFC gas has been particularly noticed in recent years due to environmental problems such as destruction of the ozone layer by CFC gas. Has been done.

This type of dispenser is formed, for example, with a trigger that can be pulled (swing) freely against the biasing force of the return spring, and a piston that can reciprocate in the cylinder can be linked to the trigger. It is connected. And
The dispenser is designed so that the reciprocating motion of the piston in the cylinder accompanying the swing of the trigger sucks up and pressurizes the liquid in the container into the cylinder, and causes this pressurized liquid to flow out from the orifice (outlet) at the tip of the nozzle. It is configured.

By the way, in such a manual trigger type dispenser, the liquid sucked into the cylinder is kept filled in the cylinder until the next pressurization, and the trigger is
Stand by at the initial position returned by the biasing force of the return spring.

Here, since the dispenser is attached to the mouth of the container containing the liquid, the center of gravity of the container after the dispenser is mounted is inevitably high, and as the liquid in the container decreases, the container is Prone to instability. Also,
In this type of dispenser, in order to obtain good operability, usually, the pulling force of the trigger required for the outflow of the liquid is not set so large.

That is, in the trigger type dispenser, when the container after the dispenser is mounted falls over due to contact or the like, the trigger is pushed against the biasing force of the return spring due to the impact of the fall. The liquid in the cylinder may flow out.

Further, the pulling force of the trigger required for this type of dispenser is not so large, and in general, even children such as infants (hereinafter referred to as infants) can be towed, so that the infants accidentally leak the liquid. There is a good possibility of causing it. If an infant or the like accidentally pulls the trigger to let the liquid flow out, the liquid may get into your eyes,
Since there is a risk of accidental accidents such as touching the skin, it is preferable from a safety point of view to be able to reliably prevent the liquid from flowing out except when necessary.

Therefore, in order to prevent such an unexpected accident, for example, an accident prevention mechanism called a child proof mechanism is provided in a manual trigger type dispenser to liquid-tightly cover the orifice at the tip of the nozzle. Are known.

As such a child proof mechanism, for example, a configuration disclosed in Japanese Patent Laid-Open No. 07-047312 is known. In this configuration, the front surface of the orifice is liquid-tightly covered with the nozzle cover under the engagement between the nozzle cover and the pair of hook pieces of the cantilever, and when not in use,
It prevents the outflow of liquid from the orifice. And
The front surface of the trigger is positioned behind the cantilever to prevent the cantilever from swinging downward.

In this structure, the nozzle cover is maintained at the position in front of the orifice under the engagement between the pair of hook pieces, so that the liquid tightness is not removed by the overturning of the container and an unexpected accident occurs. It can be prevented.

Since the trigger is located behind the cantilever, the pulling operation of the trigger is required before the releasing operation in order to release the engagement between the pair of hook pieces. Therefore, if the infant or the like is mischievous or the impact is a fall, the trigger is not towed and the cantilever is oscillated in order, and an unexpected accident due to the mischief or the like of the infant can be prevented.

[0012]

However, in the structure of Japanese Patent Laid-Open No. 07-047312 described above, the trigger prevents the cantilever from swinging, so that the child-proof function is dramatically improved, while a pair of hooks is used. For disengagement between the pieces, that is, for releasing the child proof mechanism,
Two different actions (two actions) of swinging the cantilever beam downward after pulling the trigger are required.

After the use, the trigger is pulled once to close and hold the nozzle cover,
A space must be provided behind the cantilever to ensure that the cantilever swings when the hooks are engaged.
However, in the trigger type dispenser, even if the trigger is not used for the purpose of pulling out the liquid, even if the trigger is pulled, if the orifice is open, the pressure in the cylinder causes Since it flows out from the orifice, there is a possibility that unnecessary liquid may flow out from the orifice.

Therefore, in the known configuration, the ease of use may be deteriorated in spite of the improvement of the child proof function.

It is an object of the present invention to provide a hand-operated trigger type dispenser which improves usability without deteriorating the child-proof function of the nosle cover type and a nozzle thereof.

[0016]

In order to achieve this object, according to the manual trigger type dispenser of the present invention, the nozzle has a cylindrical nozzle body and an orifice serving as a liquid outlet. , Is molded from plastic in combination with the nozzle cap located at the front end of the nozzle body. The nozzle cover is swingably provided between the closed position covering the front of the orifice and the open position removed from the front of the orifice through the hinge and integrally with the nozzle cap.

Further, the lower wall of the nozzle cap is formed as a cantilever having a rear end as a base end, and the cantilever has a corresponding hook piece engageable with a hook piece of the nozzle cover at the tip end. The operation pieces for swinging the cantilever beam in the separating direction between the pair of hooks are provided on the lower surface, respectively. And
The stopper is integrally formed on the lower end of the operation piece of the cantilever via a hinge so as to be swingable in the trigger direction, and is a stopper between the operation piece and the trigger associated with the engagement with the engagement means on the front surface of the trigger. This prevents the cantilever from swinging downward.

[0018]

[Operation] With this configuration, regardless of the pulling of the trigger,
By swinging the stopper with respect to the operation piece, engagement and disengagement of the trigger with the engagement means can be performed, so that operation before and after use is simplified, and operability and usability are improved.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings.

As shown in FIG. 1, a manual trigger type dispenser 10 according to the present invention includes a trigger 12 which is pressed to an initial position in the front (left side in the figure) by a return spring (not shown). It is fitted and connected to, for example, the side wall of the dispenser body 14 so as to be swingable in the front-back direction about the pivot point 12a as a fulcrum, that is, to be able to be pulled against the biasing force of the return spring.

A piston 16 that reciprocates inside the cylinder 15.
However, it is linked to the trigger 12 so that it can be linked. And
The dispenser 10 is provided with a rotatable bottle cap 18, and the bottle cap 20 is screwed into the mouth 20a so that the container 20
Is removably attached to the cylinder 15, and the piston 16 reciprocates inside the cylinder 15 to suck up the liquid in the container from the suction tube 24 through the primary valve into the cylinder.
It is configured to be pressurizable.

The pressurized liquid flows out of the cylinder 15 through the secondary valve, flows through the outflow passage of the dispenser body 14 and the nozzle 30 fitted to the tip of the outflow passage, and the integrated spring member 31.
Spinner (vortexing member) 32 with biasing force applied by
Is built into this nozzle. Then, the pressurized liquid is vortexed by the spinner 32, and can flow out as an atomizing flow from an orifice (outflow hole) 34 in the front surface of the nozzle 30 substantially at the center.

This manual trigger type dispenser
The internal structure and operation principle of 10 are the same as known ones, and since the structure itself is not the gist of the present invention, it will not be described in detail here. As an internal structure of this type of manual trigger type dispenser 10, for example, USP No. 4
The known structure disclosed in 815663 can be exemplified.

In the manual trigger type dispenser 10, most of the constituent members are molded from plastic, and the container 20 in which the dispenser is mounted is also usually molded from plastic.

As shown in FIG. 2 in addition to FIG. 1,
The nozzle 30 is formed by, for example, a combination of a tubular nozzle body 36 and a bottomed tubular nozzle cap 38 that is fitted to the front end of the nozzle body, and locking claws 36a for both the nozzle body and the nozzle cap are formed. , 38a are prevented from rotating relative to each other. The orifice 34 is provided at the center of the bottom portion 38b of the nozzle cap 38.

In such a nozzle 30, the nozzle body 36 is provided in the cylindrical body forming the outflow passage of the dispenser body 14.
Are fitted, the protrusions 36b on the upper surface of the nozzle body are locked in the corresponding engaging holes 14a on the upper surface of the dispenser body, and the rear end (right end in the figure) 38c of the nozzle cap is brought into contact with and engaged with the tip of the dispenser body. Thereby, the nozzle is non-rotatably attached to the dispenser body.

As can be seen from FIG. 3 in addition to FIGS. 1 and 2, the nozzle cover 40 is formed integrally with the nozzle cap 38 via the hinge 41. The nozzle cover 40 is swingable with respect to the nozzle cap 38 between the open position shown in FIG. 2 and the closed position covering the front of the orifice 34 shown in FIG. 4 by bending at the hinge. Has become.

As shown in FIGS. 3 and 4, a sealing body 42, which is in close contact with the orifice 34 at the closed position of the nozzle cover 40 and can seal the orifice by this close contact, is integrated with the rear surface of the nozzle cover. It is provided in. That is, in this dispenser 10, the nozzle cover 40 is closed to cover the orifice 34 at the tip of the nozzle in a liquid-tight manner, and the outflow of the liquid from the orifice is blocked.

Incidentally, such a swingable nozzle cover
The 40 is integrally formed with a locking piece 40a protruding from the front surface thereof, and is locked and held on the upper surface of the nozzle cap 38 by fitting the locking piece into the recess 44 on the upper surface of the nozzle cap. It is possible (see the alternate long and short dash line in FIG. 2).

As shown in FIGS. 2 and 3, in the present invention, the lower wall of the nozzle cap 38 has the rear end as the base end.
Nozzle cover 40, which is formed as a cantilevered beam 46a
A hook piece 50 that locks and holds the nozzle cover at the closed position by engaging with the corresponding hook piece 48 is provided, for example, on the upper surface of the front end of the cantilever. That is, in the present invention, the nozzle cover 40 can be held in the closed position under the engagement between the pair of hook pieces 48, 50 (see FIG. 4).

Incidentally, the cantilever 46 is formed, for example, with an operating piece 52 on the lower surface of the front end, and when the operating piece is pushed, the cantilever swings downward to cause a pair of hooks. Piece
The lock between 48 and 50 can be released.

Since the nozzle cover 40 is normally formed with the upper position shown by the solid line in FIG. 2 as the initial position, the unique elasticity for returning the nozzle cover to the natural position in the closed position causes the hinge 41 to move. Occurs in. Therefore, in the closed position of the nozzle cover 40, the pair of hook pieces 48, 50 is elastically acted on by the hinge 41 to the nozzle cover 40.
The space is locked.

Then, the cantilever 46 accompanying the operation of the operation piece 52.
When the locking between the pair of hook pieces 48, 50 is released by the swing of the nozzle cover 40, the nozzle cover 40 jumps up under the restoring force of the hinge 41, and the seal body 42 is separated from the nozzle cover 40, which causes the orifice to open.
34 is unsealed.

That is, in this structure, the sealing of the orifice 34 by the sealing body 42 of the nozzle cover 40 can be automatically released by swinging the cantilever beam 46 downward by the operating piece 52.

In such a manual trigger type dispenser 10, the orifice 34 is liquid-tightly covered by the sealing of the orifice 34 with the sealing body 42 as the nozzle cover 40 is closed, and the liquid from the orifice is prevented. The outflow is stopped. Since the nozzle cover 40 is held in the closed position by the engagement between the pair of hook pieces 48, 50, in order to obtain the outflow of the liquid by pulling the trigger 12, the nozzle cover 40 is pulled downward before the pulling operation of the trigger. Under the swing of the cantilever beam 46, unlocking between the pair of hook pieces is required.

That is, in the manual trigger type dispenser 10 of the present invention, the nozzle cover 40 provided with the sealing body 42 functions as a child proof mechanism (accident prevention mechanism), and the orifice 34 is provided under the closed state of the nozzle cover. Since it is covered with a liquid-tight seal, the childproof mechanism can be made to function to prevent the liquid from flowing out when the container 20 falls or accidentally pushes the trigger 12 due to mischief such as an infant.

Further, when the cantilever 46 is swung under the pushing of the operating piece 52, the locking between the pair of hook pieces 48 and 50 is released, so that the orifice 34 formed by the sealing body 42 of the nozzle cover is released.
Since the sealing is released, when the trigger 12 is pulled in this state, the liquid from the cylinder 15 flows out as a spray flow from the orifice via the nozzle 30.

That is, if the child proof mechanism is released by opening the nozzle cover 40, the original purpose of the dispenser 10, the outflow of liquid, can be obtained under the pulling of the trigger 12.

Here, as shown in FIGS. 1, 3 and 4, in the present invention, the lower end of the operation piece 52 of the cantilever is provided with the stopper 54 via the hinge 55 so as to be swingable in the trigger direction. Is integrally molded into. The stopper 54 is configured to be engageable with the engaging means 58 on the front surface of the trigger 12 at the initial position by swinging the stopper 54, for example. As the engagement means 58, for example, a hinge 55 of a stopper on the front surface of the trigger 12 is used.
It is possible to use a strip-shaped engaging projection that extends in the same direction as and is provided.

The stopper 54 is constructed so as to swing over the engaging projection (engaging means) 58 without pulling the trigger 12. Therefore, it is preferable that the end faces of the stopper 54 and the engaging projection 58 that face each other when riding over are to be non-gonal, for example, arc-shaped guide faces. With such a configuration, the stopper 54 can be smoothly and easily passed over the engagement protrusion 58.

Such a stopper for the engaging projection 58
Plastic cantilever for overcoming 54
Since 46 is elastically deformed, engagement and disengagement between the stopper and the engagement projection can be obtained without pulling the trigger 12.

In the embodiment, the shapes of the end faces of the stopper 54 and the engaging projection 58 which are opposed to each other at the time of getting over are illustrated as arc shapes, but the stopper can smoothly and easily go over the engaging projection. However, the shape is not limited to the circular arc shape, and, for example, each of the facing end surfaces of the stopper and the engaging protrusion may be formed in a corresponding slope shape.

As shown by the alternate long and short dash line in FIG. 4, when the stopper 54 and the engaging projection are locked by swinging in the trigger direction and overcoming the engaging projection 58, the stopper is a cantilever. Since the operation piece 52 is installed and held between the operation piece 52 and the front surface of the trigger 12, the existence of the stopper eliminates the space behind the operation piece, so that the operation piece cannot be pushed in and the cantilever 46 swings downward. Becomes impossible. That is,
In such a erected state of the stopper 54 between the operation piece 52 and the trigger 12, the disengagement between the pair of hook pieces 48, 50 does not occur, so that the orifice 34 can be maintained liquid-tight and Liquid outflow is prevented.

When the dispenser 10 is used, that is, when the nozzle cover 40 is removed from the front of the orifice 34 to release the child proof mechanism, the engagement between the pair of hook pieces 48 and 50 is released. It is necessary to secure a swinging space of the cantilever 46 behind the operation piece 52, which is guaranteed. However, in the dispenser 10 of the present invention, the stopper is provided when the engagement protrusion 58 is overcome.
54, the stopper is operated under the locking between the engaging projections 52,
Since it is only installed between the trigger 12, the trigger
By releasing the lock between the stopper and the engaging protrusion under the overcoming of the elastic deformation of the cantilever 46 without pulling the 12, the operation piece behind the operating piece is released as shown by the solid line in FIG. A swing space for the cantilever can be secured.

As described above, the operation piece 52 by the stopper 54,
When the cantilever 46 is swung downward under the operation piece being pushed in when the trigger 12 is disengaged, the nozzle cover 40 is released from the orifice by releasing the engagement between the pair of hook pieces 48, 50. Since it is removed from the front of 34, the liquid can be discharged by swinging the trigger, that is, the dispenser 10 can be normally used (see FIG. 2).

After using the dispenser 10, FIG.
As shown in FIG. 3, by closing the nozzle cover 40 under the engagement between the pair of hook pieces 48 and 50, the orifice 34 can be covered in a liquid-tight manner so that the outflow of the liquid from the orifice can be prevented. Further, as shown by the one-dot chain line in FIG. 4, if the stopper 54 is erected and held between the operation piece 52 and the trigger 12 under the swing in the trigger direction, the swing of the cantilever beam 46 downwards. Since it becomes impossible, the disengagement between the pair of hook pieces 48, 50 can be prevented.

As described above, in the manual trigger type dispenser 10 of the present invention, after the stopper 54 is erected and unlocked, the pair of hooks is oscillated downward. Since it is necessary to release the engagement between the pieces 48 and 50, it is possible to prevent the outflow of the liquid due to the accidental pushing of the trigger 12 due to the fall of the container or the mischief of an infant or the like.

Unlike the known structure in which the trigger is pulled and the cantilever is oscillated, the present invention does not pull the trigger 12 but stops the stopper with respect to the engaging projection 58 on the front face of the trigger. Since the stopper can be erected and the erection can be released after overcoming 54, the operation before and after using the dispenser 10 is not complicated. That is, according to the dispenser 10 of the present invention, the child proof function is improved without sacrificing ease of use.

In particular, without the pulling of the trigger 12,
Swinging of the stopper 54 after using the dispenser 10,
That is, since the stopper can be installed and held while the engagement protrusion 58 is overcome, it is possible to prevent unnecessary outflow of the liquid.

Furthermore, since it suffices to provide the stopper 54 at the lower end of the operation piece 52 of the cantilever and the engagement projection 58 serving as the engagement means on the front surface of the trigger 12, no problem occurs in molding. It is not necessary to increase the number of parts, and the configuration is not complicated.

Further, it is a child proof mechanism which functions by closing the nozzle cover 40, and it is easy to obtain a structure in which the nozzle cover is locked and held on the upper surface of the nozzle 30 in a normal use state in which the orifice 34 is not sealed. Therefore, even during use, the same ease of use as in the past can be ensured.

Here, as shown by the chain double-dashed line in FIG. 3, on each side surface of the stopper 54, for example, a semi-disc shaped knob piece 60.
Should be provided. In such a configuration, this knob piece 60
Since it can be used as an operation piece when the stopper 54 swings, the stopper can be installed and released smoothly and easily.

As can be seen from FIG. 5 in addition to FIG. 4, for example, a plate-like protrusion 62 is integrally provided on the back surface of the stopper 54, and a pair of holding pieces 64 capable of holding the plate-like protrusion is provided. It may be provided behind the operation piece 52. With such a configuration, the pair of sandwiching pieces 64 serve as guides when the stopper 54 swings in the erection direction with respect to the operation piece 52, and the plate-shaped projection 62 can be inserted between the pair of sandwiching pieces. With this, since the stopper can be accurately swung, twisting of the stopper at the hinge portion at the time of rocking can be prevented, and accurate locking between the stopper and the engaging projection 58 can be obtained.

In the structure in which the plate-like protrusion 62 is provided on the back surface of the stopper 54, the end face of the plate-like protrusion facing the engaging protrusion 58 precedes the end of the stopper when the stopper is swung in the trigger direction. Since the opposite ends of the plate-like protrusions have a non-cornered surface shape such as an arc shape or a slanted surface shape, smooth overcoming of the engagement projections can be ensured.

Here, in the embodiment, as a constitution in which the separate nozzle body 36 and nozzle cap 38 are combined,
Although the nozzle 30 is illustrated, it is sufficient if the nozzle cap 40 has a structure in which the front end of the orifice 34 is covered with the nozzle cap 40 in a liquid-tight manner while having the orifice 34 at the tip.
The nozzle body and nozzle cap here may be integrally formed in advance to form a nozzle.

Further, in the embodiment, the engaging projection 58 is formed in a strip shape extending in the same direction as the hinge 55, but it is sufficient if it can be engaged with the stopper 54 bent in the trigger direction. The present invention is not limited to the protrusion, and for example, one or a plurality of dot-shaped engagement protrusions may be provided on the front surface of the trigger 12.

The engaging means is not limited to the engaging projection because it is sufficient if the stopper 54 is locked and held at the erected position under the engagement with the stopper. For example, as shown in FIG. The groove-shaped recess 66 may be provided on the front surface of the trigger 12. Even in such a configuration, as shown by the alternate long and short dash line in FIG.
With the stopper between the operation piece 52 and the trigger 12, the stopper is installed and held, so that the cantilever 46 cannot be swung downward, and the engagement between the pair of hook pieces 48, 50 occurs. By preventing the release, the orifice 34 can be kept liquid-tight.

Although the groove-shaped recess 66 is embodied here, when a single or a plurality of dot-shaped engaging projections are provided at the tip of the stopper 54, the corresponding dot-shaped recess is triggered. By providing it on the front surface of 12, the recess can be used as the engaging means of the stopper.

Further, in the structure in which the engaging means is the concave portion 66, by engaging the corresponding opening end surface of the concave portion with a non-rectangular surface shape, engagement and disengagement of the stopper with respect to the concave portion can be smoothly and easily obtained. To be

By the way, in the embodiment, the cantilever 46
The cantilever hook piece 50 is embodied as a configuration integrally projecting on the upper surface of the above, but since it is sufficient to hold the nozzle cover 40 in the closed position under the engagement of the hook piece 48 of the nosle cover, The present invention is not limited to this, and other configurations may be used as the hook pieces of the cantilever.

For example, as shown in FIGS. 7A and 7B, a through hole 68 into which the hook piece 48 of the nozzle cover can be inserted is provided at the tip of the cantilever 46, and the corresponding tip of this through hole is provided. The side edge portion 68a may be used as a cantilever hook piece with which the hook piece of the nozzle cover is engaged.

Further, as shown in FIGS. 8 (A) and 8 (B), the upper bending piece 70 is integrally formed at the tip of the cantilever beam 46, and the hook piece 48 of the nozzle cover can be inserted therethrough. The hole 72 may be provided in the upper bent piece, and the edge portion 72a on the lower end side corresponding to the through hole may be a hook piece of a cantilever with which the hook piece of the nozzle cover is engaged.

Even when the edge portions 68a and 72a of the through holes are used as the hook pieces of the cantilever 46, the hook pieces of the nozzle cover can be used in the same manner as the pair of hook pieces 48 and 50. The engagement and the disengagement under the cantilever swing can be smoothly, easily and surely obtained.

The above-mentioned embodiments are intended to explain the present invention, and do not limit the present invention at all, and all modifications and alterations within the technical scope of the present invention are also included in the present invention. It goes without saying that it will be done.

[0065]

As described above, according to the present invention, the child proof mechanism (accident prevention mechanism) functions by closing the nozzle cover accompanied by the engagement between the pair of hook pieces, and the cantilever downward. Since the orifice is kept liquid-tight until the engagement between the pair of hook pieces is released by the swinging of the liquid, the liquid does not easily flow out even if the container is accidentally tilted or an infant or the like misuses the dispenser. Therefore, an unexpected accident due to an unexpected outflow of liquid is prevented, and the child proof mechanism functions sufficiently.

Then, without oscillating the trigger,
By engaging and disengaging the pair of hook pieces by operating and disengaging the operating piece under the swinging of the stopper and between the triggers, it is possible to operate the dispenser before and after use. Do not complicate. Therefore, the child proof function is improved without sacrificing ease of use.

Further, since it is sufficient to provide a stopper at the lower end of the operation piece of the cantilever and an engaging means serving as an engaging means on the front surface of the trigger, no problem occurs in molding and the number of parts is reduced. There is no need to increase it, and there is no complication of the configuration.

If each of the end faces of the cantilever stopper and the engaging means that face each other is formed into a non-square surface, the stopper can be smoothly installed and released between the operating piece and the trigger. Operability is further improved.

If the knob piece is provided so as to extend to each side of the stopper, it can be used as an operating piece when the knob piece swings the stopper, so that the stopper can be installed and released smoothly and easily. From this point as well, the operability is improved.

Further, if a plate-like projection extending in the direction orthogonal to the hinge is provided on the back surface of the stopper, and a pair of holding pieces that can hold the plate-like projection are provided on the back surface of the operation piece, the pair of holding pieces is provided. However, since it serves as a guide for swinging the stopper in the trigger direction, smooth swinging of the stopper and accurate engagement between the stopper and the engaging means can be reliably and easily obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view of a partially broken manual trigger type dispenser according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a partially broken nozzle when the nozzle cover is open.

FIG. 3 is a partially cutaway perspective view of a nozzle.

FIG. 4 is a vertical cross-sectional view of a partially broken nozzle at a erection release position and a erection position of a stopper in a closed state of a nozzle cover.

FIG. 5 is a perspective view of the nozzle, partially cut away, as viewed from the lower rear side.

FIG. 6 is a vertical cross-sectional view of a partially broken nozzle corresponding to FIG. 4 in a modified example of the present invention.

FIG. 7 is a partially cutaway perspective view and a vertical sectional view of a nozzle corresponding to FIGS. 3 and 4 in another embodiment of the present invention.

FIG. 8 is a partially cutaway perspective view and a vertical sectional view of a nozzle corresponding to FIGS. 3 and 4 in still another embodiment of the present invention.

[Explanation of symbols]

 10 Manual trigger type dispenser 12 Trigger 15 Cylinder 16 Piston 20 Vessel 30 Nozzle 34 Orifice 36 Nozzle body 38 Nozzle cap 40 Nozzle cover 41 Hinge 46 Cantilever 48 Nozzle cover hook piece 50 Cantilever hook piece 52 Operation piece 54 Stopper 55 Hinge 58 Engagement protrusion (engagement means) 60 Knob piece 62 Plate-like protrusion 64 Clamping piece 66 Recessed portion (engagement means) 68 Through hole 68a Edge of through hole (hook piece of cantilever) 70 Bent upward Piece 72 Through hole 72a Edge of through hole (cantilever hook piece)

Claims (16)

[Claims] 1. A piston is reciprocated in a cylinder in association with swinging of a trigger to suck up and pressurize a liquid in a container into the cylinder, and the pressurized liquid flows out from an orifice at a tip of a nozzle continuous to an outflow passage. In the manual trigger type dispenser, the nozzle is molded from plastic by a combination of a cylindrical nozzle body; a nozzle cap having an orifice for liquid outflow and arranged at the front end of the nozzle body. At the same time, the nozzle cover is provided integrally with the nozzle cap through a hinge so as to be swingable between a closed position that covers the front of the orifice in a liquid-tight manner and an open position that is removed from the front of the orifice. Is formed as a cantilever with the rear end as the base end, and the cantilever defines a hook piece that can be engaged with the hook piece of the nozzle cover. At the end, the operation piece for swinging the cantilever downward is provided on the lower surface, and the stopper is integrally formed on the lower end of the operation piece of the cantilever via the hinge so that it can swing in the trigger direction. The manual trigger type dispenser is characterized in that the operation piece associated with the engagement means on the front surface of the trigger and the stopper installed between the triggers prevent the cantilever from swinging downward. 2. A piston is reciprocally moved in a cylinder in association with swinging of a trigger to suck up and pressurize a liquid in a container into the cylinder, and the pressurized liquid flows out from an orifice at a tip of a nozzle continuous to an outflow passage. In the manual trigger type dispenser, the nozzle is molded from plastic by a combination of a cylindrical nozzle body; a nozzle cap having an orifice for liquid outflow and arranged at the front end of the nozzle body. At the same time, the nozzle cover is provided integrally with the nozzle cap through a hinge so as to be swingable between a closed position that covers the front of the orifice in a liquid-tight manner and an open position that is removed from the front of the orifice. Is formed as a cantilever with the rear end as the base end, and the cantilever defines a hook piece that can be engaged with the hook piece of the nozzle cover. At the end, the operation piece for swinging the cantilever downward is provided on the lower surface, and the stopper is integrally formed on the lower end of the operation piece of the cantilever via the hinge so that it can swing in the trigger direction. The operation piece associated with the engagement protrusion on the front surface of the trigger and the stopper installed between the triggers prevent the cantilever from swinging downward, and also cause elastic deformation of the cantilever. , A manual trigger type dispenser that is capable of overcoming a stopper with respect to an engaging protrusion. 3. The cantilever stopper, the respective end surfaces of the engagement protrusion of the trigger that face each other are each formed in a non-square surface shape that serves as a guide when the stopper is passed over the engagement protrusion. Manual trigger type dispenser. 4. A piston is reciprocated in a cylinder in association with swing of a trigger to suck up liquid in a container into the cylinder to pressurize the liquid, and the pressurized liquid flows out from an orifice at a tip of a nozzle continuous to an outflow passage. In the manual trigger type dispenser, the nozzle is molded from plastic by a combination of a cylindrical nozzle body; a nozzle cap having an orifice for liquid outflow and arranged at the front end of the nozzle body. At the same time, the nozzle cover is provided integrally with the nozzle cap through a hinge so as to be swingable between a closed position that covers the front of the orifice in a liquid-tight manner and an open position that is removed from the front of the orifice. Is formed as a cantilever with the rear end as the base end, and the cantilever defines a hook piece that can be engaged with the hook piece of the nozzle cover. At the end, the operation piece for swinging the cantilever downward is provided on the lower surface, and the stopper is integrally formed on the lower end of the operation piece of the cantilever via the hinge so that it can swing in the trigger direction. The operation piece associated with the insertion of the terminal into the recess on the front of the trigger and the stopper installed between the triggers prevent the cantilever from swinging downward, and under the elastic deformation of the cantilever, A manual trigger type dispenser characterized in that a stopper can be inserted into and removed from the recess. 5. The end surface of the stopper of the cantilever and the corresponding opening end surface of the recess of the trigger are each formed into a non-square surface shape that serves as a guide when the stopper is fitted in and removed from the recess. The manual trigger type dispenser according to 4. 6. The manual trigger type dispenser according to claim 1, wherein the knob piece is provided so as to extend laterally from at least one side surface of the stopper. 7. The stopper is formed with a plate-like projection extending orthogonal to the hinge on the back surface, and a pair of pair of stoppers that can hold the plate-like projection under the swing of the stopper in the trigger direction. 7. The manual trigger type dispenser according to claim 1, wherein the gripping piece is provided on the back surface of the operation piece. 8. The manual trigger type dispenser according to claim 1, wherein the hook piece of the cantilever is integrally projectingly provided on the upper surface of the cantilever corresponding to the hook piece of the nozzle cover. . 9. A through hole through which a hook piece of a nozzle cover can be inserted is provided in a tip portion of a cantilever, and an edge portion of the through hole corresponding to a tip side is a hook piece of the cantilever.
A manual trigger type dispenser according to any one of 1 to 7. 10. An upper bent piece is integrally formed at a tip portion of a cantilever, and a through hole into which a hook piece of a nozzle cover can be inserted is provided in the upper bent piece, and a corresponding lower end of the through hole. 8. The manual trigger type dispenser according to claim 1, wherein the side edge portion is a cantilever hook piece. 11. The piston is reciprocated in the cylinder in association with the swing of the trigger to suck up the liquid in the container into the cylinder and pressurize it, and the pressurized liquid flows out from the orifice at the tip of the nozzle continuous to the outflow passage. In the manual trigger type dispenser, the nozzle is molded from plastic by a combination of a cylindrical nozzle body; a nozzle cap having an orifice for liquid outflow and arranged at the front end of the nozzle body. At the same time, the nozzle cover is provided integrally with the nozzle cap through a hinge so as to be swingable between a closed position that covers the front of the orifice in a liquid-tight manner and an open position that is removed from the front of the orifice. Is formed as a cantilever whose rear end is a base end, and the cantilever is a hook piece of the hook piece of the nozzle cover that can be engaged. The distal end portion, the lower surface of the operation piece for swinging the cantilever downward, together with the respectively provided, stopper, swingably behind direction, via a hinge,
A nozzle for a manual trigger type dispenser, which is integrally molded at the lower end of the operating piece of a cantilever. 12. The knob piece is provided so as to extend laterally from at least one side surface of the stopper.
Nozzle as described. 13. A pair of stoppers is formed with a plate-shaped projection extending orthogonal to the hinge on the back surface, and a pair of plate-shaped projections that can hold the plate-shaped projection under the swing of the stopper in the trigger direction. The sandwiching piece is projectingly provided on the back surface of the operation piece.
Or the nozzle according to 12. 14. The nozzle according to claim 11, wherein the hook piece of the cantilever is integrally formed on the upper surface of the cantilever corresponding to the hook piece of the nozzle cover. 15. A through hole through which a hook piece of a nozzle cover can be inserted is provided at a tip portion of a cantilever, and an edge portion of the through hole corresponding to the tip side is a hook piece of the cantilever. 13. The nozzle according to any one of 13. 16. An upper bent piece is integrally formed at a tip of a cantilever, and a through hole into which a hook piece of a nozzle cover can be inserted is provided in the upper bent piece, and a corresponding lower end of the through hole. The nozzle according to any one of claims 11 to 13, wherein the side edge portion is a hook piece of a cantilever.