JPH02980B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trigger-type sprayer and dispenser in which a piston is reciprocated by rotating a trigger, thereby sucking up liquid in a container, pressurizing the liquid, and discharging the liquid.

For example, this type of sprayer includes a sprayer body that is attached to the mouth of the container. and,
Depending on the number of channels formed in the sprayer body, three-way (Fig. 1) or two-way (Fig. 2)
Trigger type sprayer is configured.

In a three-way trigger type sprayer (hereinafter referred to as a three-way sprayer), the liquid in the container passes through the suction pipe 210 and the primary valve 211,
Flows through vertical channel 212 and then into inclined channel 214
flows into. When the piston linked to the trigger is pushed into the inclined flow path 214, the liquid is pressurized and flows into the horizontal flow path 216, and the liquid flows into the secondary valve 217.
and is sprayed from the orifice of the nozzle.

In contrast, in a two-way trigger-type atomizer (hereinafter referred to as a two-way atomizer), the inclined flow path is eliminated and the piston is disposed in a horizontal flow path. In other words, the liquid that has flowed through the suction pipe 210 and the vertical flow path 212 passes through the primary valve 211 and enters the horizontal flow path 212.
6. The liquid is then pressurized by the reciprocating motion of the piston, and the pressurized liquid is sprayed through the secondary valve 217 and the orifice.

The cylinder, which together with the piston constitutes the pump mechanism, is formed in the inclined flow path (in the case of a three-way sprayer) or horizontal flow path (in the case of a two-way sprayer) of the sprayer main body. Further, the trigger is formed separately from the sprayer main body and is rotatably attached to the sprayer main body.

Here, in the three-way sprayer, the pushing direction of the piston and the flow direction of the pressurized liquid do not match. That is, the pressurized liquid flows from the inclined flow path into the horizontal flow path under pressure, and the flow direction of the pressurized liquid changes. Therefore, a component of the pressure of the liquid is transmitted to the atomizer body, causing a pressure drop in the liquid itself.
Furthermore, this type of three-way sprayer has a complicated structure because of the large number of flow channels, and therefore has the drawback that it requires a large number of parts and is difficult to produce at a low cost.

On the other hand, in a two-way sprayer, the direction in which the piston is pushed and the direction in which the pressurized liquid flows coincide, so no pressure drop occurs. Two-way sprayers also have a relatively small number of parts and can be produced fairly inexpensively.

However, in actual technological competition, it is required to reduce the number of parts and produce the product at low cost, and even such a two-way sprayer is still insufficient.

The above is about atomizers, but the same thing can be said about dispensers.

The object of the present invention is to provide a one-way trigger type sprayer and dispenser that can be manufactured at extremely low cost by simplifying the configuration and reducing the number of parts to the limit.

In order to achieve this object, according to the present invention, a part corresponding to a conventional sprayer body is integrally formed with the container and becomes a part thereof, and a flow path is not provided in the part corresponding to the sprayer body. Not formed. The housing of the pump mechanism is integrally formed with a trigger and a cylinder, and is attached to a portion corresponding to the main body of the sprayer. Furthermore, the nozzle is integrally formed on the trigger. In other words, according to the present invention, a one-way trigger type sprayer having only the horizontal flow path 216 formed by the cylinder as shown in FIG. 3 can be provided at low cost. The same can be said about dispensers.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying FIGS. 4 to 9.

As shown in FIG. 4, the one-way trigger type sprayer 10 according to the present invention includes a container 12 and a pump mechanism 14 attached to the container 12.

As understood from FIGS. 4 and 5, this container 12 includes a container body 12a extending vertically, and a container body 12a attached to an upright side surface 13 at the top of the container body extending horizontally. and a mouth portion 12b. In other words, the mouth portion 12b of this container opens laterally, and this portion corresponds to the main body of a conventional sprayer.

As can be clearly seen from FIG. 5, the pump mechanism 14 includes a housing 16 that integrally has a cylinder 18 that forms a horizontal flow path and is attached to the mouth 12b of the container 12, and a trigger 22 that rotates. It includes a piston 20 that reciprocates within the cylinder. One end of a suction pipe 24 is attached to the rear end of the cylinder 18, and the other end of the suction pipe 24 is curved and extends toward the bottom of the container 12. Here, the suction pipe 24 may be installed along the vertical direction perpendicular to the axis of the cylinder 18, but as shown in the figure, the suction pipe 24 may be installed along the axial direction of the cylinder 18, that is, the horizontal direction. It is also preferable from the viewpoint of molding processing. Here, the housing 16 and the trigger 22 are integrally molded, as shown in FIG. Cylinder 18 is mounted inside housing 16 at an intermediate portion thereof. In this configuration in which the pump mechanism 14 is directly attached to the container 12, the clamping ring and the sprayer body are omitted compared to the conventional configuration in which the sprayer body is attached to the container using a clamping ring. can be simplified.
Note that the engagement protrusion 26 for preventing falling off and the engagement recess 28 into which the engagement protrusion is engaged are located in the housing 16.
and the opening 12b of the container. Here, an engaging protrusion 26 is formed on the cylinder 18, and the housing 16 is connected to the mouth portion 12 through the cylinder.
It may be attached to b.

As can be clearly seen from FIGS. 5 and 6, the trigger 22 is rotatably molded integrally with the upper front end of the housing 16 via a thin hinge 30. In this way, attach the trigger 22 to the housing 1.
Compared to the conventional configuration in which the trigger is formed separately from the cylinder, the configuration in which the trigger is integrally molded with the trigger 6 can omit an independent member and simplify the configuration. Also, a nozzle 34 with an orifice 32 formed in the center.
is integrally molded on the trigger 22. Therefore, the configuration can be similarly simplified. The lower edge of the nozzle 34 is rotatably integrally formed with the trigger 22 via a thin hinge 36.

As shown in FIG. 5, the piston 20 of the pump mechanism includes a front part fitted into the cylindrical part 34a of the nozzle 34 and a rear part housed in the cylinder 18. Further, flared skirt-shaped seal pieces 38 and 4 that are in sliding contact with the inner wall of the cylinder 18, respectively.
0 are formed at the middle and rear ends of the piston 20, respectively. The piston 20 is formed into a hollow cylindrical shape with an axial flow path inside, is open at the front end, and has a hole 42 formed at the rear end. A secondary valve 44 is housed within the flow path of the piston 20. This secondary valve 44 integrally includes a valve body 46 capable of closing the hole 42 at the rear end of the piston, a spinner 48 that comes into contact with the back surface of the nozzle 34, and a compression wave spring 50 provided between them. There is. When the secondary valve 44 is formed integrally with the spinner 48 in this way, the number of parts is reduced and assembly is simplified. The spring 50 biases the valve body 46 so that it closes the bore 42 and the spinner 48 so that it abuts the nozzle 34 .

As shown in FIG. 7, the valve body 46 includes a cylindrical valve body 46a that can close the hole 42, and a guide portion 46b consisting of four blades extending in the radial direction. Further, the spinner 48 includes a disk-shaped spinner main body 48a and a guide portion 48b consisting of four blades extending in the radial direction. A circular recess 48c and a pair of mutually parallel channels 48d extending tangentially from the recess 48c are formed on the front surface of the spinner body 48a. In this spinner 48, the tangential flow path 48d alone does not have the function of a spinner because its front surface is open. However, when the spinner 48 comes into contact with the nozzle 34, the front surface of the flow path 48d is blocked, so it acts as a spinner, and when the pressurized liquid flows from the flow path 48d into the recess 48c, it is turned into a vortex, and the orifice 32 sprayed through.

As shown in FIG. 5, a hollow extending portion 52 is formed at the rear end of the cylinder, and a primary valve unit 54 is attached to this extending portion. Primary valve unit 54
is configured to have a fitting hole 56 into which the suction pipe 24 is fitted, and a liquid inflow hole 58 communicating with the fitting hole. A primary valve 60, which is a ball valve in this embodiment, is arranged to open and close the fluid inlet hole 58. The primary valve 60 only needs to be one that can be pressed against the valve seat by its own weight without using a valve spring.
It is not limited to ball valves. For example, plate valves can also be used. Further, the liquid inflow hole 58 does not need to be vertical, but may be inclined, as long as it allows the primary valve 60 to be pressed against the valve seat by its own weight. In such a one-way trigger type sprayer 10,
If the primary valve 60 is pressed against the valve seat by its own weight without using a valve spring, the primary valve will quickly separate from the valve seat in response to negative pressure in the cylinder. Therefore, the liquid can immediately flow into the pressurizing chamber from the suction pipe 24 via the primary valve 60, and there is no time-lab.
It can be sucked up efficiently. In addition, the primary valve unit 5
A compression coil spring 62 is disposed between the left end of the piston 4 and the rear end of the piston 20 to bias the piston in the direction of protruding from the cylinder 18.

As can be seen from FIGS. 5 and 6, an inverted L-shaped engagement portion 64 is formed on the back of the trigger 22. As shown in FIGS. Also, the lock bar 68 is
6 is rotatably integrally molded via a hinge 66. A pin-shaped engaging portion 70 that can be engaged with the engaging portion 64 is formed at the tip of the lock bar 68. This pin-shaped engaging portion 70
However, when the trigger 22 is engaged with the inverted L-shaped engaging portion 64 as shown in FIG. 6, the trigger 22 is prevented from rotating counterclockwise and is locked. On the other hand, a protrusion 77 is formed on one side of the lock bar 68 to be inserted into and held in a holding part, such as a slit 72, formed on the housing 16. As shown in FIG. 8, when the protrusion 74 is inserted into the slit 72 and clamped, the lock bar 68 does not prevent the trigger 22 from rotating, allowing the trigger to rotate. That is, the rotation of the trigger 22 can be controlled, and the combination of the inverted L-shaped engaging portion 64 of the trigger and the lock bar 68 of the housing can be used as a child-proof mechanism. The holding portion may not be a slit but may have another form, such as a holding protrusion.

As can be seen from FIG. 5, negative pressure prevention holes 76 are formed in the cylinder wall. The negative pressure prevention hole 76 is
It communicates with the main body 12a of the container via the mouth 12b. Further, the negative pressure prevention hole 76 is connected to the trigger 2.
Before the second rotation, the trigger is located between the seal pieces 38 and 40, and when the trigger is sufficiently rotated (the eighth
(see figure), the outer seal piece 38 is arranged so as to be located above the negative pressure prevention hole. Therefore, when the trigger 22 is sufficiently rotated, the inside of the container 12 is communicated with the atmosphere through the negative pressure prevention hole 76. Note that a space inside the cylinder 18 located behind the piston 20 is defined as a pressurizing chamber 78 by the primary valve 60 and the secondary valve 44.

Further, as shown in FIGS. 6 and 9, a pair of engagement protrusions 80 are provided on the inner wall of the housing 16, and a corresponding pair of engagement protrusions 82 are provided on the inner wall of the trigger 22 so as to limit rotation of the trigger 22. Each is formed on the outer wall. The piston 20 has a compression spring 62
The protrusions 80 and 82 are biased in the direction of protruding from the cylinder 18 by the
limited by engagement as shown. In other words, the counterclockwise rotational position of the trigger 22 is also limited by the engagement of the engagement protrusions 80 and 82. However, it goes without saying that clockwise rotation of the trigger 22, in other words, sliding of the piston 20 inward of the cylinder 18 is permitted.

The operation of the sprayer 10 configured as above will be explained below.

At the stage of transportation and display at a store, as shown in FIG. 5, the engaging part 70 of the lock bar is engaged with the engaging part 64 of the trigger. In this state, even if a pushing force is applied to the trigger to rotate the trigger 22 counterclockwise around the hinge 30, the trigger is blocked by the lock bar 68 and cannot be rotated. Therefore, the trigger 22 will not rotate inadvertently, and unnecessary spraying can be prevented. In other words, child proofing can be achieved. In this embodiment, the engaging portion 64 and the lock bar 68 constituting the child-proof mechanism are integrally constructed with the constituent members of the pump mechanism, such as the trigger 22 and the housing 16, so that the construction can be extremely simplified. Needless to say, this child-proof mechanism can be used not only for virgin locks, but also when temporarily discontinuing use.

In use, first disengage the engagement parts 64 and 70, then rotate the lock bar 68 counterclockwise around the hinge 66 to insert the protrusion 74 into the slit 72 of the housing. to hold. If the lock bar 68 is held in this way, the lock bar will not interfere with the rotation of the trigger 22. Then, when the trigger 22 is pulled counterclockwise, that is, toward the user, the trigger is rotated around the hinge 30 against the biasing force of the compression spring 62. Then, the piston 22 is pushed into the cylinder 18 in response to the rotation of the trigger 22, and the volume of the pressurizing chamber 78 is reduced.

At this time, as can be seen from Fig. 8, nozzle 3
4, only the lower edge is connected to the housing 16 via the hinge 36, and the upper edge is free. Therefore, in response to the rotation of the trigger 22, the nozzle 34 can move horizontally in a substantially upright state without rotation. In this way,
The piston 20 is pushed into the cylinder 18 while maintaining its horizontal state. Note that the nozzle 34 is
It is sufficient that the piston 20 is integrally molded with the trigger so that it does not rotate together with the trigger 22 and reciprocates while maintaining a substantially upright state. Further, the nozzle 34 may have a configuration in which all or part of the upper edge or side edge instead of the lower edge is connected to the trigger 22. However, if the lower edge of the nozzle 34 is connected to the trigger 22, the stroke of the piston in response to the rotation of the trigger can be increased.
preferable.

Thereafter, when the pushing force on the trigger 22 is removed, the biasing force of the compression spring 62 causes the piston 20 and the trigger to return to the initial position shown in FIG. Then, since the volume of the pressurizing chamber 78 increases,
Negative pressure is created within the pressurized chamber. Therefore, the primary valve 60 is separated from the valve seat against its own weight, and the liquid in the container 12 flows into the pressurizing chamber via the suction pipe 24 and the primary valve. Note that the primary valve 60 is pressed against the valve seat by its own weight at the time when the inflow of liquid is finished. Here, the secondary valve 44 is pressed against the valve seat by the biasing force of the compression spring 50, and the negative pressure in the pressurizing chamber 78 acts to press the secondary valve 44 against the valve seat. , the liquid tightness of the secondary valve is sufficiently ensured.

Here, as the liquid in the container 12 is sucked up into the pressurizing chamber 78 via the suction pipe 24, the amount of liquid in the container decreases, and there is a possibility that the pressure inside the container becomes negative. However, the negative pressure prevention hole 7 in the cylinder 18
6 is formed and when the piston 20 is pushed into the cylinder, the seal piece 38 moves onto the negative pressure prevention hole, as shown in FIG. Therefore, the inside of the container communicates with the atmosphere through the negative pressure prevention hole 76, and air flows into the container, so that negative pressure is prevented.

Thereafter, when the trigger 22 is rotated counterclockwise around the hinge 30 again, the piston 20 moves inward to the cylinder 18. As the trigger 22 is rotated, the piston 20 moves into the cylinder 18 and pressurizes the liquid in the pressurizing chamber 78. When the liquid is pressurized and this pressure becomes greater than the biasing force of the compression spring 50 of the secondary valve, the valve body 46 separates from the valve seat and the secondary valve 44 is opened. Here, the front surface of the spinner 48 is brought into contact with the nozzle 32 to close the front surface of the tangential flow path 48d (see FIG. 5). Therefore, the pressurized liquid flowing out from the hole 42 flows into the flow path 48d, is turned into a vortex, and the pressurized liquid flows into the recess 48d.
The liquid is sprayed from the orifice 32 via 8c.
When the trigger 22 is pressed, the liquid in the container 12 is sucked up into the pressurizing chamber 78, preparation for the next spraying operation is completed, and the trigger 22
The next spray is repeated by pulling the button.

Note that this sprayer 10 can be used simply as a dispenser except for the spinner 48. In addition, the liquid that is turned into a vortex and is sprayed from the orifice 32 collides with a foaming means such as a barrier to foam, so that it can also be used as a foamer. As described above, the trigger type sprayer according to the present invention includes a container having a mouth extending laterally, a housing integrally provided with a cylinder to which a suction pipe is attached to the inner end and attached to the mouth of the container, and a housing. The cylinder includes a rotatable trigger integrally molded with the cylinder, and a hollow piston having an axial flow path therein and slidably disposed within the cylinder. The trigger-type sprayer further includes a primary valve which is disposed at the outer end of the cylinder and which controls the flow of liquid from the suction pipe by being pressed against the valve seat by its own weight, and an inner part of the flow path of the piston. It has a secondary valve that can be opened and closed at the end and defines a pressurized chamber in the cylinder along with the primary valve, and an orifice that communicates with the flow path of the piston, and is non-rotatably molded into the trigger. It also includes a nozzle to which the outer end of the piston is attached, and a spinner provided in the flow path of the piston on the back side of the nozzle. With this configuration, the portion corresponding to the conventional sprayer main body is integrally constructed with the container and becomes a part thereof, and no flow path is formed in the portion corresponding to the sprayer main body. In other words, it only has a horizontal flow path formed by the cylinder. Therefore, it is possible to provide a new type of one-way trigger type sprayer that maintains the advantages of the conventional two-way sprayer. Further, the housing integrally includes a cylinder, a trigger is integrally molded into the housing, and a nozzle is integrally molded with the trigger. That is, in conventional configurations, the housing, trigger, and nozzle, which are independent members, are integrally molded. Therefore, the number of independent parts is reduced, the configuration is simplified, and the trigger type sprayer can be easily assembled and produced at low cost. Furthermore, even though there is only a horizontal flow path, the primary valve is pressed against the valve seat by its own weight, so that the primary valve can be quickly separated from the valve seat in response to negative pressure in the pressurized chamber.
Therefore, the liquid can be efficiently sucked up from the suction pipe into the pressurizing chamber through the primary valve.

It goes without saying that by removing the spinner from the one-way trigger-type sprayer according to the present invention, a one-way trigger-type dispenser can be provided.

The above embodiments are for illustrating this invention, and are not intended to limit this invention in any way, and any modifications, alterations, etc. made within the technical scope of this invention are also included in this invention. Needless to say, it is included. For example, the present invention includes a trigger type sprayer equipped with a foaming means and used as a foamer.

[Brief explanation of drawings]

1 and 2 are diagrams of the operating principles of known three-way and two-way trigger type sprayers; FIGS. 3 to 9 are diagrams of the one-way trigger type sprayer according to the present invention; FIG. 3 is a diagram of the operating principles; Figure 4 is a right side view, Figures 5 and 8.
6 is a partial perspective view, FIG. 9 is a partial front view, and FIG. 7 is a perspective view of the secondary valve of the trigger type sprayer. 10...One-way trigger type sprayer,
12... Container, 12b... Container mouth, 14...
Pump mechanism, 16... Housing, 18... Cylinder, 20... Piston, 22... Trigger, 3
2... Orifice, 34... Nozzle, 44... Secondary valve, 48... Spinner, 60... Primary valve, 64
...Engaging portion, 66...Hinge, 68...Lock bar, 70...Engaging portion, 72...Slit, 74...
...protrusion.

Claims (1)

[Scope of Claims] 1. A container having a mouth extending laterally, a housing integrally provided with a cylinder to which a suction pipe is attached to the inner end and attached to the mouth of the container, and a housing integrally molded with the housing. A rotatable trigger and
A hollow piston is provided inside the cylinder and has an axial flow path and is slidably disposed within the cylinder.A hollow piston is disposed at the outer end of the cylinder and is pressed against the valve seat by its own weight to create suction. A primary valve that controls the flow of liquid from the riser pipe, a secondary valve that is openable and closable at the inner end of the piston's flow path and defines a pressurized chamber in the cylinder together with the primary valve, and the piston's flow path. a one-way nozzle that is non-rotatably molded integrally with the trigger and has an orifice communicating with the trigger and to which the outer end of the piston is attached; and a spinner that is provided in the flow path of the piston at the back of the nozzle. Trigger type sprayer. 2. The one-way trigger type sprayer according to claim 1, wherein the trigger is integrally molded with the housing with its upper edge connected to the housing via a hinge. 3. The one-way trigger type sprayer according to claim 1 or 2, wherein the nozzle is integrally molded with the trigger, with its lower edge connected to the trigger via a hinge. 4. The trigger has an engaging part on its back surface, and the housing includes an integrally molded rotatable lock bar and a retaining part for the lock bar, which lock bar engages with the engaging part of the trigger when the trigger is in the initial position. Claims 1 to 3 have a corresponding engaging portion that prevents rotation of the trigger, and a held portion that is held by the holding portion of the housing without hindering rotation of the trigger. A one-way trigger type sprayer as described in any of the above. 5 The engaging part of the trigger has an inverted L shape, the corresponding engaging part of the lock bar has a pin shape, the holding part of the housing has a slit, and the held part of the lock bar has a protruding part that can be held in the slit. A one-way trigger type sprayer according to claim 4, each having a shape. 6. A container having a mouth extending laterally, a housing integrally provided with a cylinder to which a suction pipe is attached to the inner end and attached to the mouth of the container, and a rotatable trigger integrally molded with the housing. ,
A hollow piston is provided inside the cylinder and has an axial flow path and is slidably disposed within the cylinder.A hollow piston is disposed at the outer end of the cylinder and is pressed against the valve seat by its own weight to create suction. A primary valve that controls the flow of liquid from the riser pipe, a secondary valve that is openable and closable at the inner end of the piston's flow path and defines a pressurized chamber in the cylinder together with the primary valve, and the piston's flow path. A one-way trigger-type dispenser comprising an orifice communicating with the trigger and a nozzle that is non-rotatably molded integrally with the trigger and to which the outer end of the piston is attached. 7. The one-way trigger type dispenser according to claim 6, wherein the upper edge of the trigger is connected to the housing via a hinge and is integrally molded with the housing. 8. The one-way trigger type dispenser according to claim 6 or 7, wherein the nozzle is integrally molded with the trigger with its lower edge connected to the trigger via a hinge. 9. The trigger has an engaging part on its back, and the housing includes an integrally molded rotatable locking bar and a retaining part for the locking bar, which lock bar engages with the engaging part of the trigger when the trigger is in the initial position. Claims 6 to 8 have a corresponding engaging portion that prevents rotation of the trigger, and a held portion that is held in the holding portion of the housing without hindering rotation of the trigger. One-way trigger type dispenser listed in any of the above. 10 The engaging part of the trigger has an inverted L shape, and the corresponding engaging part of the lock bar has a pin shape,
The one-way trigger type dispenser according to claim 9, wherein the holding portion of the housing has the shape of a slit, and the held portion of the lock bar has the shape of a protrusion that can be held in the slit.