JP2002136898A - Trigger operated vertical pump container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the operation to suck liquid into a trigger operated vertical container by the negative pressurization in a pump on such an occasion when the container is used for the first time. SOLUTION: A piston member 41 fitted to the inside surfaces of an injection cylinder 23 at the top end of an actuating member 6 of the container and a nozzle cylinder 31 fitted to the outside surface in the front part of the injection cylinder is formed to a cylindrical shape opened at both front and rear end faces; a second rod member 61 is slidably fitted to the piston member and into the injection cylinder 23; a first rod member 51 erecting from the inside of the first cylinder 4 is slidably fitted into a vertical cylinder 22 of the actuating member and is so disposed that the top end of the first rod member extrudes the rear end of the second rod member forward when the actuating member 6 descends down to the lower limit by operating the front part of a trigger 10 to pull the same to the rear limit and at this time, the inside of the injection cylinder and the piston member 41 are communicated with a discharge valve hole 34 opening at the rear face of the front wall of the nozzle cylinder through a nozzle hole 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trigger type vertical pump container.

[0002]

2. Description of the Related Art An arm is erected from the rear part of a vertical pump mounting cylinder mounted on a container body upward and rearward, and the rear end of the trigger is urged upward from the front end of the arm and from the first cylinder of the vertical pump. The trigger intermediate rear part is pivotally attached to the upper part of the operating member, and the trigger front part is drooped downward and forward, and the injection cylinder is projected forward from the upper end of the vertical cylinder of the operating member, and the nozzle cylinder is moved to the front outer surface of the injection cylinder. The piston member is urged forward and slidably fitted into the front of the injection cylinder and the nozzle cylinder, and the piston member retreats due to the high pressure in the injection cylinder caused by the trigger operation. The discharge valve formed by the front surface of the piston member and the discharge valve hole formed in the inner surface of the front part of the nozzle cylinder is opened, and the liquid sucked into the first cylinder is ejected from the nozzle hole opened in the front wall of the nozzle cylinder. Trigger-type vertical pong made possible Container is known.

[0003]

The above-mentioned container is provided so that when the pressure in the injection cylinder is increased by a trigger operation, the piston member is automatically retracted to open the discharge valve and eject the liquid from the nozzle hole. This makes it possible to make the jetted liquid run out better, but in this case, especially at the beginning of use of the pump, the air in the space from the suction valve to the discharge valve is discharged to make the liquid sucked up from the inside of the container. It was necessary to repeat the trigger operation many times in order to exchange.

The present invention is provided so that the above operation can be performed easily.

[0005]

As a first means, a trigger rear portion is provided at an end of an arm which rises upward and rearward from a rear portion of a vertical pump mounting cylinder mounted on a container body, and an upper portion of the vertical pump is provided from within the first cylinder. The middle rear part of the trigger is pivotally attached to the upper part of the operating member which is urged and raised, and the front part of the trigger is drooped downward and forward. A nozzle cylinder is fitted to the outer surface, and a front-end closed cylindrical piston member is slidably fitted to the front part of the injection cylinder and the inside of the nozzle cylinder by operating the upper trigger. As the piston member retreats due to the increase in pressure, the discharge valve formed by the front surface of the piston member and the discharge valve hole formed in the inner surface of the front wall of the nozzle cylinder opens and the first valve opens.
In a trigger type vertical pump container in which liquid sucked in a cylinder can be ejected from a nozzle hole opened in a front wall of a nozzle cylinder, an operating member 6 is provided from inside the first cylinder 4.
The first rod member 51 is erected to the upper part of the vertical cylinder, and the front end of the front wall of the piston member 41 is inserted into the insertion hole 49 having a large inner diameter at the front end portion formed in communication with the discharge valve hole 34. The front portion of the second rod member 61 slidably fitted into the piston member 41 and the second rod member 61 is fitted, and the engaging projection 64 provided on the outer surface of the intermediate rear portion of the second rod member 61 is injected. By engaging the rear end of the second coil spring 65 that urges the piston member 41 forward with the front surface of the engaging projection 48, the front end of the second forwardly-facing step portion 24 provided on the inner surface of the cylinder intermediate portion is engaged. Equal piston member 41 and second rod member 61
When the operating member 6 is lowered to the lower limit by pulling the front part of the trigger 10 to the rear limit from the state where the inside of the first cylinder 4 has no liquid, the first rod member 51 By pushing the rear end face of the upper end of the second rod member 61 forward,
A seal ridge 63 attached to the outer periphery of the front end of the second rod member enters the large-diameter portion 43, and the insertion hole 49 and the discharge valve hole 34 communicate with each other. When the second rod member is separated from the upper end, the second rod member is retracted, and the sealing ridge 63 is formed so as to seal the insertion hole 49.

As a second means, there is provided a first means, wherein the rear end cylindrical portion of the piston member is formed as a small-diameter cylindrical piston, and the front portion is formed as a small-diameter cylindrical portion 44 from a middle portion of the cylindrical portion to a front outward direction. The front end of the expanded tapered cylindrical portion 45 is formed into a large-diameter cylindrical piston, and the rear surface of the small-diameter cylindrical portion 44 is formed as a rearward step 46 between the large-diameter cylindrical piston and the small-diameter cylindrical portion 44 at the step. The through-hole 47 is opened to open to the small-diameter cylindrical piston,
To the inner surface of the small-diameter second cylinder formed by the inner surface of the injection cylinder portion between the first forward step portion 24 and the second forward step portion 26 provided on the inner surface of the front portion of the injection cylinder, and the large-diameter cylindrical piston is moved to the second forward step. Part 26
And a rearward step 46 formed by the outer periphery of the rear surface of the nozzle cylinder discharge valve hole.
And the inner surface of the large-diameter third cylinder formed by the inner surface of the front end portion of the injection cylinder or the inner surface of the injection cylinder portion.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a conventionally known portion will be briefly described. 1 is a container body, 2 is a trigger type vertical pump mounted on the container body, and the pump is screwed to the mouth and neck of the container body. A mounting cylinder 3 having a peripheral wall, a first cylinder 4 vertically suspended from the mounting cylinder into the container, an operating member 6 which is urged upward by a first coil spring 5 from within the cylinder, and rises. A rear end is provided at the tip of an arm 7 standing upward and rearward from the rear of the mounting cylinder, a middle rearward portion is provided at an upper portion of the operating member, and a trigger 10 which pivots 8 and 9 and a front portion projects downward and forward, respectively. Have.

The operating member 6 rises from the inside of the cylinder, and has a cylindrical piston at the lower end.
A main cylinder 21 protruding forward 23, a nozzle cylinder 31 fitted with a peripheral wall 33 protruding rearward from the outer periphery of the front wall 32 to the front outer surface of the injection cylinder,
It has a piston member 41 fitted in the front part of the injection cylinder or in the front part of the injection cylinder and the peripheral wall of the nozzle cylinder 31 so as to be slidable in the front-rear direction and biased forward. The conventional piston member is different from the illustrated example in that the front wall is closed and does not have an insertion hole described later.

In the above construction, the operating member 6 moves up and down by swinging about the rear pivot portion by pulling and releasing the front part of the trigger 10 rearward, and the suction in the cylinder bottom part is caused by the rise. The valve 11 opens and the liquid in the container is sucked into the cylinder, and the piston member 41 retreats due to the high pressure in the cylinder due to the downward movement, the discharge valve hole 34 opens, and the liquid in the cylinder passes through the nozzle hole 35 on the front surface of the nozzle cylinder. It erupted through.

In the present invention, the inner surface of the front part of the injection cylinder 23 is formed as a middle inner diameter part 25 through the first front step part 24, and the inner surface of the front end part of the injection cylinder is formed with the second front step part 26. A large inner diameter portion 27 is formed.

The nozzle cylinder 31 fitted to the front outer surface of the injection cylinder 23 has a peripheral wall 33 projecting rearward from the outer periphery of the front wall 32 fitted to the front outer surface of the injection cylinder leaving the front part of the peripheral wall. Further, the inner diameter of the front wall of the peripheral wall is substantially the same as the large inner diameter portion 27 of the front end of the injection cylinder, and a discharge valve hole 34 is formed in the center of the rear surface of the front wall, and a nozzle hole 35 is formed at the center of the front wall front. They are communicating.

A piston member 41 is fitted between the inner surface of the front part of the injection cylinder and the front part of the peripheral wall 33 of the nozzle cylinder. The piston member is formed in a large-diameter cylindrical portion 42 at the rear and a small-diameter cylindrical portion 44 having a front portion with a large-diameter portion 43 at the front end, and the piston member extends outward from a front end outer surface of the large-diameter cylindrical portion 42. The large-diameter cylindrical portion 42 protrudes from the tapered cylindrical portion 45, and the outer peripheral portion of a rearward step 46 formed between the front end of the large-diameter cylindrical portion 42 and the rear end of the small-diameter cylindrical portion 44. A through-hole 47 is formed to communicate the inside and the space between the tapered tubular portion 45 and the small-diameter tubular portion 44. Further, an engagement projection 48 is provided on the outer surface of the front end portion of the large-diameter cylindrical portion 42 so that the rear surface of the projection can be engaged with the front surface of the second forward-facing step portion 26 of the injection cylinder. The cylindrical hole of the small-diameter cylindrical portion forms an insertion hole 49, and the front end of the insertion hole forms a large-diameter portion 43.

As shown in FIG. 1, the first rod member 51 stands up from the inside of the first cylinder 4 to the upper part of the vertical cylinder 22 of the operating member so that the operating member can slide. A plurality of leg pieces 52 hang down from the outer surface of the lower end of the first rod member, and the lower ends of these leg pieces are engaged with the upward step provided on the lower inner surface of the first cylinder. The lower end of one coil spring 5 is engaged with the upper surface of the leg piece. The upper end of the first rod member has a spherical shape.

Reference numeral 61 denotes a second rod member slidably fitted into the injection cylinder 23 and the piston member 41, and the front part thereof is a small-diameter rod part.
62 is inserted into the small-diameter cylindrical portion 44 of the piston member 41, and a seal ridge 63 is provided on the outer surface of the front end portion.
63 is fitted water-tightly into an insertion hole 49 formed by the inner surface of the small-diameter cylindrical portion 44.

An engaging projection 64 is attached to the outer surface of the intermediate rear portion of the second rod member, and the rear surface of the engaging projection is engaged with the front surface of the first forward step portion 24 of the injection cylinder 23, and the engagement A second coil spring 65 is provided between the front surface of the projection 64 and the outer peripheral surface of the rearward step 46 of the piston member 41 so as to be loosely fitted to the outer surface of the second rod member, and biases the piston member forward. At this time, the rear end of the second rod member 61 is located above the cylinder hole of the vertical cylinder 22. The rear end has a spherical shape.

In this state, the injection cylinder, the nozzle cylinder,
The piston member and the second rod member have the following relationship.
As shown in FIG. 2, the rear end of the large-diameter cylindrical portion 42 of the piston member is directed to the inner surface of the medium-diameter portion 25 forming the second cylinder, and the outer surface of the front end of the tapered cylindrical portion 45 is directed to the nozzle tube 31 forming the third cylinder.
The outer peripheral portion of the front surface of the small-diameter cylindrical portion 44 contacts the inner surface of the front portion of the peripheral wall and the peripheral portion of the rear surface of the discharge valve hole 34 in a watertight manner. The outer periphery of the tapered cylindrical portion of the tapered cylindrical portion 45 extends the small-diameter cylindrical portion in front of the second forward stepped portion 26 of the injection cylinder 23 to the inner surface of the front end portion of the nozzle cylindrical peripheral wall 33, and is watertight to the inner surface of the extended cylindrical portion. You may make it contact. When the front part of the trigger is pulled to the rear limit from this state, the trigger swings around the rear pivoted part, whereby the operating member 6 is pushed down to the lower limit. Then, as shown in FIG. The upper end pushes the rear end of the second rod member 61 and pushes it forward, and the seal ridge 63 on the outer periphery of the front end of the second rod member enters the large inner diameter section 43 at the front end of the small diameter cylindrical section 44.

When the trigger operation is performed from a state where liquid is not sucked into the first cylinder 4 shown in FIG.
As the operating member 6 descends, the pressure in the first cylinder 4 and the air in the operating member 6 increases, but as shown in FIG. 3, the seal ridge 63 at the front end of the second rod member 61 extends from the insertion hole 49 into the large inner diameter portion 43. Then, the high-pressure air passes through the large-diameter portion 43, and is further discharged through the discharge valve hole 34 and the nozzle hole 35. Next, when the front part of the trigger is released, the operating member 6 rises while pushing the front part of the trigger forward by the first coil spring 5. At this time, since the pressure inside the first cylinder 4 is reduced to a negative pressure, the liquid in the container is passed through the suction valve 11. The second rod member 61 returns from the upper end of the first rod member 51 to the state shown in FIG. 2 by separating from the upper end of the first rod member 51, and the sealing ridge 63 is again inserted into the insertion hole formed by the inner surface of the small-diameter cylindrical portion 44. 49 is closed watertight.

When the front part of the trigger is pulled again to near the rear end from the above state, the upper end of the first rod member 51 is moved to the second rod member.
61 As shown in FIG. First
The liquid in the cylinder enters the operating member by the lowering of the operating member 6, passes through the through hole 47, and the front wall of the nozzle tube in front of the tapered tube portion 45.
32 Back surface is also pressurized. Then the large-diameter cylindrical part of the piston member
The pressure difference caused by the diameter difference between the outer diameter of the rear end face of 42 and the outer diameter of the front end of the tapered cylindrical portion 45 causes the piston member 41 to be in the second coil spring.
65, the discharge valve 71 formed by the inner peripheral portion of the rear surface of the discharge valve hole 34 and the outer peripheral portion of the front end surface of the small-diameter cylindrical portion 44 is opened. It is ejected from the hole 35, and the pressure drop due to the ejection causes the piston member 41 to advance and close the discharge valve 71.

[0019]

According to the present invention, the front end of the trigger is drawn to the rear end so that the upper end of the first rod member 51 becomes the rear end of the second rod member 61. , The second rod member is advanced against the urging, and the seal ridge 63 on the outer periphery of the front end portion of the second rod member is moved from inside the cylindrical hole of the small-diameter cylindrical portion of the piston member 41 to within the large-diameter portion 43. The inside of the injection cylinder 23 and the piston member and the discharge valve hole 34 communicating with the nozzle hole 35 are provided so as to communicate with each other, so that air can be easily discharged from the first cylinder and the operating member, and Further, the operation of replacing the air in the operating member with the liquid sucked up from the inside of the container becomes easy. Also, the second rod member 61 does not move forward unless the front part of the trigger is pulled to the rear limit. Therefore, after the liquid enters the first cylinder or the like, the second rod member 61 is forcibly operated by performing the trigger operation normally. The discharge valve 71 can be opened by retreating only the piston member 41 without being pushed forward forward.

According to the second aspect, the piston member 41 and the second rod member 61 can be accurately slid relative to each other.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the container of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 shows the operating member lowered to a lower limit,
FIG. 3 is an enlarged sectional view of a main part of FIG. 2.

FIG. 4 is an enlarged cross-sectional view of a main part of FIG. 2, showing a state where the operating member is lowered to near a lower limit.

[Explanation of symbols]

 6. Operating member 21 Main cylinder 31 Nozzle cylinder 41 Piston member 51 First rod member 61 Second rod member

Claims (2)

[Claims] 1. A trigger rear portion is provided at an end of an arm which rises upward and rearward from a rear portion of a vertical pump mounting cylinder mounted on a container body, and to an upper portion of an operating member which is urged upward from the first cylinder of the vertical pump to rise. The middle rear part of the trigger is pivotally attached to the front part of the trigger, and the front part of the trigger is lowered downward and forward. The injection cylinder is projected forward from the upper end of the vertical cylinder of the operating member, and the nozzle cylinder is fitted to the outer surface of the front part of the injection cylinder. A front closed cylindrical piston member is slidably fitted to the front of the injection cylinder and the inside of the nozzle cylinder by sliding forward, and the piston member retreats due to the high pressure in the injection cylinder caused by the upper trigger operation. The discharge valve formed by the front surface of the piston member and the discharge valve hole formed in the inner surface of the nozzle cylinder front wall is opened, and the liquid sucked into the first cylinder is ejected from the nozzle hole opened in the nozzle cylinder front wall. Possible trigger type vertical port In the container, the first rod member 51 is erected from the inside of the first cylinder 4 to the upper part of the vertical cylinder of the operating member 6, and is formed in the center of the front wall of the piston member 41 in communication with the discharge valve hole 34. The front portion of the second rod member 61 slidably fitted into the injection cylinder 23 and the piston member 41 is fitted into the insertion hole 49 having the large inner diameter at the front end portion. Engagement protrusion attached to the outer surface of the middle rear part
64 is engaged with the front surface of the first forward stepped portion 24 provided on the inner surface of the injection cylinder intermediate portion, and the rear end of the second coil spring 65 for urging the piston member 41 forward is engaged with the engagement protrusion 48 front surface. hand,
By urging the piston member 41 and the second rod member 61 in opposite directions, and pulling the front part of the trigger 10 to the rear end from the state where the inside of the first cylinder 4 has no liquid, the operating member 6 When the lower end of the first rod member 51 is lowered to the lower limit, the upper end of the first rod member 51 pushes the rear end face of the second rod member 61 forward, so that the sealing ridge 63 attached to the outer periphery of the front end of the second rod member enters the large inner diameter portion 43. Enter and insert hole 49
And the discharge valve hole 34 are communicated with each other, and the second rod member is separated from the upper end of the first rod member by the rise of the operating member due to the release of the trigger. Trigger type vertical pump container characterized by being formed so as to be sealable. 2. A front end portion of a tapered cylindrical portion 45 formed by forming a rear end cylindrical portion of a piston member into a small-diameter cylindrical piston and expanding a front portion as a small-diameter cylindrical portion 44 from a middle portion of the cylindrical portion to a front outward direction. The large-diameter cylindrical piston is formed, and the rear surface of the small-diameter cylindrical portion 44 is a rearward stepped portion 46, and a through-hole 47 is formed in the step portion so as to open between the large-diameter cylindrical piston and the small-diameter cylindrical portion 44. The small-diameter cylindrical piston moves to the small-diameter second cylinder inner surface formed by the inner surface of the injection cylinder portion formed between the first forward step portion 24 and the second forward step portion 26 provided on the inner surface of the injection cylinder front portion, and has the larger diameter. The cylindrical piston moves to the inner surface of the front end of the injection cylinder or the inner surface of the large-diameter third cylinder formed by the inner surface of the injection cylinder between the second forward step 26 and the rear step 46 formed by the outer periphery of the rear surface of the nozzle cylinder discharge valve hole. 2. The trigger type vertical pump container according to claim 1, wherein each of said first and second pump types is abutted in a watertight manner.