JPH0733899Y2 - Trigger sprayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a trigger sprayer.

"Problems to be solved by conventional techniques and devices" A trigger type sprayer configured to spray a liquid in a container by a trigger operation is known. Conventionally, this kind of atomizer can obtain the spray only when the trigger is pulled, and continuous spray cannot be obtained even if the trigger is continuously operated quickly. In consideration of such a point, the applicant of the present invention has proposed a sprayer that can obtain a spray when the trigger is pulled and when the trigger is returned (continuous application) (Japanese Patent Application No. 1-243193). This sprayer has a spray nozzle at the tip, is equipped with a discharge valve, a cylinder and a suction valve in this order from the spray nozzle to the upstream side, and is a trigger sprayer in which a piston operated by a trigger is installed in the cylinder. The cylinder is divided into two cylinders of large diameter and small diameter,
The large-diameter cylinder communicates with the upstream side, and the small-diameter cylinder communicates with the downstream side, and the pistons are installed in both cylinders and mechanically linked so as to work in reverse dynamics. It has a configuration in which it is unidirectionally communicated to the downstream side via.

However, with the diversification of applications of this kind of container, there is a demand for a container capable of both continuous spraying and single spraying, and the present invention intends to answer that request.

“Means for Solving the Problems” (1) A spray nozzle is provided at the tip, and a discharge valve, a cylinder, a suction valve, and a suction port are sequentially provided from the spray nozzle to an upstream side, and a trigger is operated in the cylinder. In a trigger-type sprayer with a built-in piston, the cylinder is divided by a partition wall into a large-diameter first cylinder and a small-diameter second cylinder.
In the first cylinder, a columnar first piston member that is actuated by a trigger and has a large-diameter piston projecting from the outer periphery is provided inside the first cylinder in a biasing state on the trigger side. A rod-shaped second piston member, in which a small-diameter piston is projected from the outer periphery and one end of which is slidably and liquid-tightly and slidably inserted into the first cylinder through a partition wall, is urged on the trigger side. A rotation lever for rotating the second piston member around the shaft is mounted inside the second cylinder, and the second piston member in the first cylinder can be inserted or not inserted depending on the rotation position of the second piston member. A possible insertion hole is formed in the first piston member, and the interlocking / non-interlocking operation of the first piston member and the second piston member is controlled by the rotating lever to move the first cylinder to the upstream side and the second cylinder to the second cylinder. Connect it to the downstream side, and A flow passage that connects the first cylinder and the second cylinder is formed in the tongue member, and a check valve is formed in the flow passage to unidirectionally connect the two cylinders downstream. Trigger type sprayer.

(2) In a trigger type sprayer having a spray nozzle at the tip, a discharge valve, a cylinder, a suction valve, and a suction port are sequentially provided from the spray nozzle to an upstream side, and a piston operated by a trigger is provided in the cylinder. , A cylinder is defined as a first cylinder and a second cylinder that are divided by a partition wall, and a columnar first piston member that is actuated by a trigger and has a first piston protruding from the outer periphery is pulled inside the first cylinder. The interior is energized on the gold side, and the second piston is projecting from the outer circumference in the second cylinder, and one end of the first piston is placed through the partition wall.
A rod-shaped second piston member, which is inserted in the cylinder in a liquid-tight, air-tight and slidable manner, is internally installed with the trigger side biased,
A rotation lever for rotating the second piston member around the axis is attached to the rear of the second cylinder, and the second piston member in the first cylinder can be inserted or not inserted depending on the rotation position of the second piston member. The insertion hole is bored in the first piston member, and the interlocking / non-interlocking operation of the first piston member and the second piston member is controlled by the rotating lever, and the inside of the pressurizing cylinder and the discharge valve are connected between the two cylinders. Is equipped with a switching valve that connects the
A trigger-type sprayer in which two flow passages from the first and second cylinders to the suction port are provided, and a suction valve is provided in each flow passage.

"Operation" I. In the embodiment shown in FIGS. 1 and 2, the following operation occurs in accordance with the trigger operation.

1. When the second piston member is in a position where it can be inserted into the insertion hole.

When the trigger is pulled, the first piston operates and the inside of the first cylinder is in a pressurized state, and the pressurized liquid in the first cylinder passes through the check valve and from the inside of the second cylinder through the discharge valve to the spray head. Gush out.

When the trigger returns, the first piston in the first cylinder returns, the check valve closes, the inside of the first cylinder is in a decompression state, and the liquid flows into the first cylinder through the suction valve.

2. When the rotation lever is turned to the position where the second piston member cannot be inserted into the insertion hole.

When the trigger is pulled, the pistons in both cylinders work together, the first cylinder is in the pressurizing state, the second cylinder is in the depressurizing state, and the pressurized liquid in the first cylinder passes through the check valve and becomes a small diameter cylinder. Then, the pressurized liquid in an amount corresponding to the difference in diameter between the two cylinders flows out from the small-diameter cylinder and is ejected from the spray head through the discharge valve.

When the trigger returns, the pistons in both cylinders return together, the check valve closes,
The first cylinder is in the decompression state and the second cylinder is in the pressure state, and the pressurized liquid in the second cylinder flows out of the second cylinder and is ejected from the atomizing head through the discharge valve. Liquid flows in through the suction valve.

II. In the embodiment shown in FIG. 3, the following operations occur with the trigger operation.

1. When the second piston member is in a position where it can be inserted into the insertion hole.

When the trigger is pulled, the first piston operates and the inside of the first cylinder is in a pressurizing state, the switching valve connects the first cylinder and the discharge valve, and the pressurized liquid in the first cylinder passes through the switching valve. Eject from the spray head through the discharge valve.

When the trigger returns, the first piston in the first cylinder returns, the switching valve closes, the inside of the first cylinder is in a decompression state, and the liquid flows into the first cylinder through the first suction valve.

2. When the rotation lever is turned and the second piston member is in a position where it can be inserted into the insertion hole.

When the trigger is pulled, the pistons in both cylinders are actuated together so that the first cylinder is in the pressurizing state and the second cylinder is in the depressurizing state, and the switching valve connects the first cylinder and the discharge valve to each other. The pressurized liquid in the cylinder passes through the switching valve, passes through the discharge valve, and is ejected from the spray head. At this time, liquid flows into the second piston from the second suction valve.

When the trigger is returned, the pistons in both cylinders are returned together, the inside of the first cylinder is in the decompression state, the inside of the second cylinder is in the pressurization state, and the switching valve connects the second cylinder and the discharge valve, The pressurized liquid in the cylinder is ejected from the atomizing head through the switching valve and the discharge valve. At the same time, the liquid flows into the first cylinder through the first suction valve.

"Embodiment" FIGS. 1 and 2 show an embodiment of the present invention.

In the figure, 1 is an inverted L-shaped sprayer main body, 2 is a screw cylinder rotatably attached to the lower end of the sprayer main body for attachment to a liquid container, and 3 is pivotally attached to the lower front surface of the sprayer main body. The trigger 4 is a spray nozzle provided at the tip of the sprayer body.
Is a discharge valve provided in the front part of the atomizer body, 6 and 7 are large-diameter first cylinders and small-diameter first cylinders obliquely provided at the corners of the atomizer body, and 8 is the first cylinder 6 The first piston member 10, which is internally mounted in the second cylinder 7 and operates by the trigger 3 and has a large-diameter piston 9 protruding from the outer periphery of the columnar member main body, is internally installed in the second cylinder 7 and has a rod shape. A small-diameter piston 11 is projected from the outer periphery of the member body,
A second piston member in which one end of the member main body is slidably and watertightly inserted into the first cylinder through a partition wall, 12
Is a rotary lever provided at the rear of the second cylinder 7, 13 is a suction valve provided in the lower part of the sprayer body, 14 is an inlet, and 15 is
It is a suction pipe hung from the lower end of the sprayer body.

The first cylinder 6 and the second cylinder 7 are coaxially arranged with the former as the outer side (lower side) and the latter as the inner side (upper side), and a partition wall 16 is provided between the two, and a skirt is provided at the center of the partition wall. Through hole 18 is formed in the lower surface of the inner end of the first cylinder 6, and a through hole 18 communicating with the suction valve 13 is formed in the lower surface of the first cylinder 6, and a through hole communicating with the discharge valve 5 is formed in the upper surface of the outer end of the second cylinder 7. 19 are drilled.

The first piston member 8 has one end protruding outside the first cylinder 6 so that the protruding portion is mechanically linked to the middle portion of the trigger 3 and the compression spring 20 is arranged between the partition wall 16 and the first partition member 16. , Trigger 3 side is urged. Further, an insertion hole 21 into which the second piston member 10 in the first cylinder 6 can be inserted is bored inside. The insertion hole 21 has a pair of grooves 23 protruding from above and below a cylindrical main hole 22.

Further, the second piston member 10 in this embodiment is a hollow first rod 24 which is slidably and watertightly fitted into the window hole 17 from the inside of the second cylinder 7 and projected into the inside of the first cylinder 6.
And a fitting cylinder 25 corresponding to the rod 24 is projected so that the fitting cylinder 25 is fitted to one end of the first rod 24.
A second rod formed by projecting a small-diameter piston 11 from the outer circumference of the peripheral wall
It consists of 26 and. Further, passage holes 27, 28 communicating with the inside of the first cylinder 6 and the inside of the second cylinder 7 are bored at the tip and the base of the second piston member 10 to form a flow passage 29 inside, and the flow passage 29 is formed. A check valve 30 formed of a ball valve is installed in the middle of the valve so that the check valve 30 can flow from the first cylinder 6 side to the second cylinder 7 side.

The rotation lever 12 is a fitting hole in which a tip end of a protrusion 31 projecting into the second cylinder 7 is bored in the second rod 26 from a cylindrical lever body that is rotatably fitted to the rear of the second cylinder 7. 32
It is slidably fitted in the axial direction. Further, a compression spring 33 is arranged between the rotating lever 12 and the second piston member 10 to urge the second piston member 10 toward the trigger 3 side.

Further, a pair of projections 34 are provided on the outer periphery of the end portion of the second piston member 10 on the first cylinder side, and each projection 34 is inserted into the insertion hole 21.
When the first piston member 8 moves, the first rod 24 is inserted into the insertion hole 21 when the first piston member 8 and the second piston member 8 move. Ten
The second piston member 10 is
When the projections 34 are rotated so that the protrusions 34 are not in the positions corresponding to the grooves 23, the second piston member 10 is configured to interlock with the movement of the first piston member 8.

With the above configuration, the screw cylinder 2 is used by being screwed to the mouth of the container containing the liquid. First, the projection 34 of the second piston member 10 corresponds to each groove 23 of the insertion hole 21. The case in which the position is set will be described. Trigger 3 compression spring
When the piston is pulled against 20, the large-diameter piston 9 is activated, and the inside of the first cylinder 6 is in a pressure-applying state accordingly, and the pressurized liquid in the first cylinder 6 passes through the passage hole 27, the flow passage 29, and the reverse passage. It flows into the second cylinder 7 through the stop valve 30 and the passage hole 28, and the through hole 19,
It is configured to be ejected (sprayed) from the spray nozzle 4 via the discharge valve 5.

Then, when the trigger 3 is released, the large-diameter piston 9, the trigger 3 and the like are reversely moved by the elastic force of the compression spring 20, the inside of the first cylinder 6 is decompressed, and the check valve 12 is closed. The liquid in the container is sucked into the cylinder 6 through the suction pipe 15, the suction valve 13, and the through hole 18.

Next, when the rotation lever 12 is turned to locate each protrusion 34 of the second piston member 10 at a position that does not correspond to each groove 23 of the insertion hole 21,
When the trigger 3 is pulled against the compression spring 20, the large-diameter piston 9 operates and at the same time, the small-diameter piston 11 is driven via the first rod 24. Along with this, the inside of the first cylinder 6 is in the pressurizing state and the inside of the second cylinder 7 is in the depressurizing state, and the pressurized liquid in the first cylinder 6 is in the passage hole 27, the flow passage 29, the check valve 3
0, flow into the second cylinder 7 through the passage hole 28, and the amount of pressurized liquid corresponding to the diameter difference between the two cylinders is further ejected (sprayed) from the spray nozzle 4 through the through hole 19 and the discharge valve 5. I am configuring.

Next, when the trigger 3 is released, the pistons 9 and 11, the trigger 3 and the like are reversely moved by the elastic force of the compression springs 20 and 33, and the inside of the second cylinder 7 is in a pressure-applied state and the inside of the first cylinder 6 is inside. The pressure reducing state is set, the check valve 30 is closed, and the pressurized liquid in the second cylinder 7 is ejected (sprayed) from the spray nozzle 4 through the through hole 19 and the discharge valve 5. In addition, the first decompression situation
Inside the cylinder 6, a suction pipe 15, a suction valve 13, a through hole
The liquid in the container is sucked through 18

In the embodiment shown in FIG. 3, a switching valve 35 is provided between the first cylinder 6 and the second cylinder 7 for communicating the inside of the pressurized cylinder with the discharge valve, and the first and second cylinders are also provided. Each cylinder
Two flow passages from 6,7 through the through holes 36,37 to the inlet 14.
38, 39 are provided, and the flow passages 38, 39 are provided with the first and second suction valves 40, 41, respectively. Further, the second piston member 10 is not provided with a flow passage, and the first cylinder and the second cylinder may have the same size. Therefore, the protrusion 34 of the second piston member 10 is inserted into each groove 23 of the insertion hole 21.
When the trigger 3 is pulled against the compression spring 20, the first piston 9 is actuated, and the inside of the first cylinder 6 is in a pressurizing state, and the switching valve 35 Makes the first cylinder 6 communicate with the discharge valve 5, and the pressurized liquid in the first cylinder 6 passes through the switching valve 35 discharge valve 5 and the spray nozzle 4
It is configured to eject (spray).

Next, when the trigger 3 is released, the elasticity of the compression spring 20 causes the first piston 9, the trigger 3 and the like to reversely move, the inside of the first cylinder 6 is in a decompression state, the switching valve 35 is closed, and the first valve 9 is closed. The liquid in the container is sucked into the cylinder 6 through the suction pipe 15, the suction valve 40, and the through hole 36.

Next, when the rotation lever 12 is turned to locate each protrusion 34 of the second piston member 10 at a position that does not correspond to each groove 23 of the insertion hole 21,
When the trigger 3 is pulled against the compression spring 20, the first piston 9 operates, and at the same time, the second piston 11 is driven via the first rod 24. Along with this, the inside of the first cylinder 6 is in the pressurizing state and the inside of the second cylinder 7 is in the depressurizing state, and the switching valve
35 makes the first cylinder 6 and the discharge valve 5 communicate with each other, and the pressurized liquid in the first cylinder 6 is ejected (sprayed) from the spray nozzle 4 via the switching valve 35 and the discharge valve 5. On this occasion,
A suction pipe is installed in the second cylinder 7 which is in a depressurized state.
The liquid in the container is sucked through the suction valve 41 and the through hole 37.

Next, when the trigger 3 is released, both pistons 9, 11 trigger 3 and the like move backward due to the elasticity of the compression springs 20 and 33, and the inside of the second cylinder 7 is in the pressure-applied state and the inside of the first cylinder 6 is depressurized. The switching valve 35 connects the second cylinder 7 and the discharge valve 5, and the pressurized liquid in the second cylinder 7 is ejected (sprayed) from the spray nozzle 4 through the switching valve 35 and the discharge valve 5. ing.
Further, the liquid in the container is sucked through the suction pipe 15, the suction valve 40, and the through hole 36 into the first cylinder 6 in the depressurized state.

[Effect of the Invention] As described above, the trigger type sprayer of the present invention can spray the content liquid only when the trigger is pulled like the conventional sprayer of this kind by having the above-mentioned configuration. ,
If the turning lever is turned, continuous spraying can be performed when the trigger is reciprocated, which is extremely convenient.

In addition, the embodiment shown in FIG. 3 has an advantage that a larger amount of spray can be performed by one reciprocating motion of the trigger when performing continuous spray.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view, FIG. 2 is an exploded perspective view showing an example of parts in a cylinder, and FIG. 3 is another embodiment. FIG. 1 ... Atomizer body, 2 ... Screw cylinder 3 ... Trigger, 4 ... Spraying nozzle 5 ... Discharge valve, 6 ... First cylinder 7 ... Second cylinder, 8 ... First piston member 10 ... … Second piston member, 12 …… Rotating lever 30 …… Check valve, 35 …… Switching valve

Claims (2)

[Scope of utility model registration request] 1. A trigger type in which a spray nozzle is provided at the tip, a discharge valve, a cylinder, a suction valve and a suction port are sequentially provided upstream from the spray nozzle, and a piston operated by a trigger is provided in the cylinder. In the atomizer, the cylinder is divided into two cylinders, a large-diameter first cylinder and a small-diameter second cylinder, which are partitioned by a partition wall, and a large-diameter piston is provided in the first cylinder that is actuated by a trigger and protrudes from the outer periphery. The columnar first piston member is installed in a biased state on the trigger side, and a small diameter piston is projected from the outer periphery in the second cylinder, and one end is liquid-tight in the first cylinder through the partition wall.・
A rod-shaped second piston member, which is airtightly and slidably inserted, is internally installed in a biased state on the trigger side, and a rotation lever for rotating the second piston member around the axis is mounted behind the second cylinder. , An insertion hole in which the second piston member in the first cylinder is insertable or impossible depending on the rotational position of the second piston member is bored in the first piston member, and the first piston member is rotated by the rotation lever. A flow passage that controls interlocking and non-interlocking of the second piston member so that the first cylinder communicates with the upstream side, the second cylinder communicates with the downstream side, and the first cylinder communicates with the second cylinder in the second piston member. And a check valve is formed in the flow passage to unidirectionally communicate between the two cylinders downstream. 2. A trigger type in which a spray nozzle is provided at a tip, a discharge valve, a cylinder, a suction valve and a suction port are sequentially provided from the spray nozzle to an upstream side, and a piston operated by a trigger is provided in the cylinder. In the atomizer, the cylinders are divided into a first cylinder and a second cylinder, which are partitioned by a partition wall.
A columnar first piston member formed by projecting a piston is internally mounted in a biasing state on the trigger side, and a second cylinder from the outer periphery to the second cylinder
A rod-shaped second piston member, in which a piston is projected and one end of which is inserted in a first cylinder through a partition wall so as to be liquid-tight, air-tight and slidable, is internally mounted in a biased state on a trigger side. A rotation lever for rotating the second piston member around the axis is attached to the rear of the second cylinder, and the second piston member in the first cylinder can be inserted or not inserted depending on the rotation position of the second piston member. The insertion hole is bored in the first piston member, and the interlocking / non-interlocking operation of the first piston member and the second piston member is controlled by the rotating lever, and the inside of the pressurizing cylinder and the discharge valve are connected between the two cylinders. A trigger type sprayer characterized in that a switching valve for communicating with each other is provided, two flow passages from the first and second cylinders to the suction port are provided, and a suction valve is provided in each flow passage.