JPS6365386B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trigger type sprayer that reciprocates a piston by rotating a trigger, thereby sucking up liquid in a container, pressurizing it, and spraying it.

This type of sprayer includes a sprayer body that is attached to the mouth of the container. Depending on the number of channels formed in the sprayer body, a 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 flows through a suction tube 210 and a primary valve 211 into a vertical channel 212 and then into an inclined channel 214. The piston linked to the trigger is the inclined flow path 2
14, the liquid is pressurized and flows into the horizontal channel 216, passes through 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 an inclined flow path (for a three-way sprayer) or a horizontal flow path (for a two-way sprayer) in 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 undergoing compression into the horizontal flow path, and the flow direction of the pressurized liquid changes. Therefore, a component of the pressure of the liquid is transmitted to the sprayer 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 paths, and therefore has the disadvantage 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 pressurized liquid flows coincides with the direction in which the piston is pushed, 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, there is a demand for lower production costs and lower production costs, and even such a two-way sprayer is still insufficient.

The object of the present invention is to provide a trigger type sprayer which can be manufactured at extremely low cost by simplifying the structure and reducing the number of parts to the limit.

To achieve this objective, according to the present invention, the part corresponding to the conventional sprayer housing is integrally constructed with the container and becomes a part thereof, and no flow path is formed in the part corresponding to the sprayer housing. do not have. and,
The housing of the pump mechanism is integrally formed with a trigger and a cylinder and is attached to a portion corresponding to the atomizer housing. Furthermore, the nozzle is integrally formed with the trigger. That is, according to the present invention, a one-way trigger type sprayer having only the horizontal flow path 218 formed by the cylinder as shown in FIG. 3 can be provided at low cost.

Embodiments of the present invention will be described in detail below with reference to FIGS. 4 to 11 of the accompanying drawings.

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 6, this container 12 includes a container body 12a extending vertically, and one side surface 12b formed from an upright surface at the top of the container body 12a. The opening 12c is attached to the opening 12c and extends in the horizontal direction. In other words, the mouth portion 12c of this container 12 faces in the lateral direction and opens.

As can be clearly seen from FIG. 6, the pump mechanism 14 includes a housing 16 attached to the mouth 12c of the container 12, and a cylinder 18 forming a horizontal flow path.
and a piston 20 that reciprocates within the cylinder 18.
and a trigger 22. cylinder 18
One end of a suction pipe 24 is attached to the rear end and communicated with each other, 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 orthogonal to the axial direction of the cylinder 18, but as shown in the figure, the suction pipe 24 is installed along the axial direction of the cylinder 18, that is, the horizontal direction. is preferable in terms of molding process. Here, housing 1
6. The cylinder 18 and the trigger 22 are integrally formed, as shown in FIG.
is mounted inside the housing 16 at the middle thereof. In the 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 pump mechanism 14 is attached to the sprayer body and the container using a clamping ring. can be simplified. The housing 16 and the opening 12c are each provided with an engaging protrusion 26 for preventing falling off and a recess 28 into which the engaging protrusion 26 enters.

Furthermore, as can be seen from FIG. 6, the trigger 22
is rotatably integrally formed on the upper front end of the housing 16 via a thin hinge 30. The configuration in which the trigger 22 is integrally molded with the housing 16 in this manner can omit an independent member and simplify the configuration, compared to the conventional configuration in which the trigger is formed separately from the cylinder. Further, a nozzle 34 having an office (spout hole) 32 formed in the center is molded integrally with the trigger 22. For this reason,
Similarly, the configuration can be simplified. Furthermore, this nozzle 3
4 is rotatably formed integrally with the trigger 22 via a thin hinge 36.

The piston 20 of the pump mechanism 14 includes a front part fitted into the cylindrical part 34a of the nozzle 34 and a rear part fitted into the cylinder 18. Further, skirt-shaped seal pieces 38 and 40 are formed on the outer circumferential surface of the intermediate portion and the outer circumferential surface of the rear end portion of the piston 20, respectively, so as to be in sliding contact with the inner surface of the cylinder 18, respectively. The piston 20 is formed into a hollow cylindrical shape, and has an open front end surface and a small diameter through hole 42 formed in the rear end surface. A secondary valve 44 is integrally molded and housed within this piston 20. This secondary valve 44 includes a secondary valve body 46 that can close the aforementioned through hole 42, a spinner 48 that comes into contact with the rear surface of the nozzle 34, and a spring portion provided between the secondary valve body 46 and the spinner 48. 50 are integrally provided. This spring portion 50 is connected to the secondary valve body 46
is biased so that it closes the through hole 42, and the spinner 48 is biased so that it comes into contact with the nozzle 34.

The secondary valve 44 is integrally constructed as shown in FIG. The spinner 48 includes a disc-shaped main body 48a and a guide part 48b made of four blades extending in the radial direction around the central axis. .

A circular recess 48c and a pair of parallel channels 48d extending tangentially from the recess 48c are formed in the center of the front surface of the main body 48a. In this spinner 48, the tangential flow path 48d does not function as a spinner when it is alone 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 closed, so it acts as a spinner, and the pressurized liquid flows through the flow path 48d as a vortex, and flows through the recess 48c and the orifice 32. sprayed through.

On the other hand, a through hole 52 communicating with the suction pipe 24 is formed in the center of the rear wall of the cylinder 18 .
Additionally, a primary valve 54 is located at the rear of the cylinder 18.
is installed. This primary valve 54 is the ninth
As shown in the figure, there is a primary valve body 56 that can close the through hole 52, and a ring portion 5 that is provided coaxially with the primary valve body 56 and that is fitted into the cylinder 18.
8, and three arms 60 that connect the primary valve body 56 and the ring portion 58 and are disposed equiangularly extending in the circumferential direction. Due to the configuration of the primary valve 54, under normal conditions, the primary valve body 56 is biased by the elasticity of the arm 60, and the through hole 52 is biased.
is sealed. However, since the arm 60 of the primary valve body 56 extends in the circumferential direction, it can move along the axial direction of the piston 20 so as to move away from the through hole 52 .

Note that a compression coil spring 62 is housed within the cylinder 18. The front end of this compression coil spring 62 engages with the rear end of the piston 20, and the rear end is connected to the primary valve 5.
4 and engages with the front end of the ring portion 60 of the piston 20
is forced out of the cylinder 18 and the primary valve 54 is urged against the rear wall of the cylinder 18.

An inverted L-shaped engagement portion 64 is formed on the back of the trigger 22 described above. Further, a support bar 68 is rotatably attached to the lower end of the housing 16 via a hinge 66 . At the tip of this support bar 68, an engaging portion 6 is provided.
A pin-shaped engaged portion 70 that can be engaged with 4 is formed. This engaged portion 70 is connected to the engaging portion 64 and the sixth
In the engaged state shown in the figure, rotation of the trigger 22 is prevented and the trigger 22 is locked.
On the other hand, a protrusion 74 is formed on one side of the support bar 68 and is inserted into and held in a slit 72 formed in the housing 16. As shown in FIG.
The support bar 6 is inserted and held in the
8 allows the trigger 22 to freely rotate, and the trigger 22 becomes rotatable.

On the other hand, a negative pressure prevention hole 76 is formed in the front portion of the cylinder 18 . This negative pressure prevention hole 76
is the main body 1 of the container 12 through the inside of the mouth 12c.
It communicates with 2a. In addition, this negative pressure prevention hole 76
When the trigger 22 is not pushed in, as shown in FIG.
11, the front seal piece 38 is disposed so as to reach this position when the trigger 22 is in a state between 0 and 0 and the trigger 22 is pushed in. That is, when the trigger 22 is pushed in, the interior of the container 12 is brought into communication with the atmosphere through the negative pressure prevention hole 76. Note that an internal space within the cylinder 18 located behind the piston 20 is defined as a pressurizing chamber 78.

Further, as shown in FIGS. 5 and 7, in order to prevent the trigger 22 from rotating more than a predetermined amount, two sets of engagement protrusions 80 are provided on the inner surface of the housing 16 and the outer surface of the trigger 22. 82 are integrally formed. These engagement protrusions 80, 82
allows the trigger 22 to rotate counterclockwise about the hinge 30 from the state shown in FIG. 7, but allows the trigger 22 to rotate clockwise from the state shown in FIG.
They are formed to mesh with each other so as to prevent rotation of the two. In this way, the engagement protrusion 80,
82 allows the trigger 22 to be held rotatably about the hinge 30 between the pre-pushing position shown in FIGS. 6 and 10 and the post-pushing position shown in FIG. Become.

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. 6, the engaged portion 70 of the support bar 68 is engaged with the engaging portion 64 of the trigger 22. In this state, even if a pushing force is applied to the trigger 22 to rotate the trigger 22 counterclockwise around the hinge 30, the trigger 22 is blocked by the support bar 68 and does not rotate. Therefore, the trigger 22 will not rotate inadvertently, and unnecessary spraying can be prevented. In other words, childproofing can be achieved.
In this embodiment, the child-proof mechanism is integrally constructed with the pump mechanism 14, so 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, the engaging part 64 and the engaged part 70 are disengaged, the support bar 68 is rotated counterclockwise around the hinge 66, and the protruding part 74 is inserted into the slit 72 of the housing 16. As shown in Figure 9,
Engage and lock. Support bar 68 like this
By locking the support bar 68, the rotation of the trigger 22 is not obstructed. Then, if you pull the trigger 22 toward you, the trigger 22
The hinge 30 resists the biasing force of the coil spring 62.
is rotated around. 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 inside the cylinder 18 is reduced.

At this time, only the lower edge of the nozzle 34 is connected to the housing 16 via the hinge 36, and the upper edge is left free. Therefore, nozzle 3
4 can maintain a substantially upright state without rotating in response to the rotation of the trigger 22 due to the free state of its upper edge. In this way, the piston 20 is pushed into the cylinder 18 while maintaining a substantially horizontal state.

After that, except for the pushing force on the trigger 22, the biasing force of the coil spring 62 causes the piston 2 to
0 and the trigger 22 return to the initial position shown in FIG. 9, and the volume of the pressurizing chamber 78 increases, so that negative pressure is generated within the pressurizing chamber 78. Therefore, arm 6
The primary valve 54 is opened against the urging force of 0, and the liquid in the container 12 flows into the pressurizing chamber 76 through the suction pipe 24 and the primary valve 54 due to the negative pressure in the pressurizing chamber 78. flows into. Note that the primary valve 54 closes the through hole 52 when the inflow of liquid is finished. Here, the secondary valve 44 is closed by the biasing force of the coil spring 50, and the negative pressure in the pressurizing chamber 78 is released from the secondary valve 44.
Therefore, the secondary valve 44 is sufficiently liquid-tight.

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 12 decreases, and there is a possibility that the inside of the container 12 becomes negative pressure. However, when the negative pressure prevention hole 76 is formed in the cylinder 18 and the piston 20 is pushed into the cylinder 18, as shown in FIG.
The seal piece 38 moves beyond the negative pressure prevention hole. Therefore, the inside of the container is communicated with the atmosphere through the negative pressure prevention hole 76, and 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 further 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 increases due to the biasing force of the spring portion 50 of the secondary valve 44, the secondary valve body 46 moves away from the through hole 42, and the secondary valve 44 is opened. Here, the secondary valve body 46 brings the front surface of the spinner 48 into contact with the nozzle 32 to close the front surface of the tangential flow path 48d (see FIGS. 6 and 7), so that the pressurized liquid flowing out from the through hole 42 flows into the flow path 48d, is turned into a vortex, and flows into the orifice 3.
It is sprayed from 2. Then, by applying a pushing force to the trigger 22, the liquid in the container 12 is sucked up into the pressurizing chamber 78, and preparation for the next spraying operation is completed, and by pulling the trigger 22, the next spraying operation is completed. Spraying is repeated.

Note that this sprayer 10 can be used 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. Furthermore, the pump mechanism 14 is installed above the container 12 instead of on the side,
The piston 18 may be configured to reciprocate in the vertical direction.

As described above, according to the present invention, the cylinder is integrally provided in the middle part of the housing, the suction pipe attachment part is integrally provided in one end part of the cylinder, and the trigger is integrally provided in the other end part of the housing.
The nozzle is integrally molded into the trigger. With this configuration, the conventional sprayer main body is omitted, and the trigger, nozzle, etc., which were conventionally independent members, are formed integrally with the cylinder, simplifying the configuration and reducing the number of independent parts. Furthermore, it is easy to assemble and the sprayer can be produced at low cost. Furthermore, the present invention can provide a new type of one-way sprayer that maintains the advantages of the conventional two-way sprayer.

It should be noted that the illustrated embodiment merely shows one embodiment of the present invention, and it goes without saying that the present invention also includes substitutions, changes, etc. made within the technical concept of the present invention.

[Brief explanation of drawings]

Figures 1 to 3 show the conventional three-way,
Schematic diagrams of two-way and one-way trigger-type sprayers according to the invention; FIGS. 4 and 5 are side views and partial front views of the trigger-type sprayer according to the invention; FIG. 6 is a diagram showing the nozzle locked. 7 is a perspective view showing the housing of the pump mechanism 14, FIG. 8 is a perspective view showing the secondary valve, and FIG.
FIG. 10 is a perspective view of the primary valve, FIG. 10 is a side sectional view of the sprayer with the nozzle unlocked, and FIG. 11 is a side sectional view of the sprayer with the nozzle pushed in. DESCRIPTION OF SYMBOLS 10... Sprayer, 12... Container, 12a... Container main body, 12b... One side, 12c... Mouth part, 14... Pump mechanism, 16... Housing, 18... Cylinder, 2
0... Piston, 22... Trigger, 24... Suction pipe, 26... Engaging projection, 28... Recess, 30... Hinge, 32... Orifice, 34... Nozzle, 34a...
Cylindrical portion, 36...hinge, 38...seal piece, 40...
Seal piece, 42... Through hole, 44... Secondary valve, 46... Secondary valve body, 46a... Main body part, 46b... Guide part, 48
...Spinner, 48a...Main body, 48b...Guiding part, 4
8c... recess, 48d... channel, 50... spring part, 52
...Through hole, 54...Primary valve, 56...Primary valve body, 58...
Ring part, 60... Arm, 62... Coil spring, 6
4...Engaging part, 66...Hinge, 68...Supporter bar, 70...Engaged part, 72...Slit, 74...Protrusion part, 76...Negative pressure prevention hole, 78...Pressure chamber, 80,
82...Engagement protrusion.

Claims (1)

[Claims] 1. A trigger-type sprayer that sucks up liquid contained in a container, pressurizes it, and atomizes it, which comprises a housing attached to the mouth of the container, and a rotatable member attached to one end of the housing. a trigger attached to the trigger; a nozzle provided on the trigger and having an orifice; a cylinder whose intermediate portion is held by the housing and can face the orifice; A suction pipe that communicates with the inside, one end is connected to the nozzle, the other end is located inside the cylinder,
A piston that slides on the inner surface of the cylinder, and when the trigger rotates in one direction, closes the nozzle and opens the suction pipe, and when the trigger rotates in the other direction, opens the nozzle. and a valve means for closing the suction pipe, wherein the housing, the trigger, the nozzle, the cylinder, and the suction pipe are integrally formed. 2. A container, a housing that is attached to the container and that sucks up the liquid contained in the container, pressurizes it, and sprays it, and that is attached to the mouth of the container, and a rotatable housing that is attached to one end of the housing. a trigger attached to the trigger; a nozzle provided on the trigger and having an orifice; a cylinder whose intermediate portion is held by the housing and can face the orifice; A suction pipe that communicates with the inside of the container, a piston that has one end connected to a nozzle and the other end located inside the cylinder and slides against the inner surface of the cylinder, and when the trigger rotates in one direction, the nozzle and a valve means for closing the nozzle and closing the suction pipe when the trigger is rotated in the other direction. A trigger characterized in that the mouth of the container is attached to a side surface of the container that is substantially upright and extends substantially horizontally, and the housing, the trigger, the nozzle, the cylinder, and the suction pipe are integrally formed. type sprayer.