JP2549326Y2 - Liquid injection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manually operated liquid ejecting apparatus for ejecting a liquid such as a detergent.

[0002]

2. Description of the Related Art A large number of liquid ejecting apparatuses of this kind have been proposed and are well known. For example, Japanese Utility Model Application No. 2-81653 is one example. As can be seen from this publication, this kind of injection device has a pump-type injector main body attached to the mouth of the container body with a screw cap.

That is, a pressing head with a nozzle tube is communicatively connected to the upper end of a stem rising upward and outward from a vertical cylinder provided in the mouth of a container body, and the pressing head is pressed against a return spring to perform a pressing operation. Then, the liquid in the cylinder is pressurized through the cylindrical piston at the lower end of the stem, and the pressurized liquid is ejected to the outside from the nozzle pipe by opening the discharge valve provided in the stem by the liquid itself. .

[0004] When the liquid injection is completed, the movable parts of the cylindrical piston, the stem and the push-down head are returned upward by a return spring, and the pressure inside the cylinder is reduced by this return. The suction valve is opened to draw up the liquid from the container into the cylinder and prepare for the next injection.

[0005]

The liquid ejecting apparatus of this type usually performs an operation of holding the body of the container with one hand and pushing down the push-down head with the other hand, so that both hands must be used. Not only is there any inconvenience, but also the pressing force against the return spring is heavy, so that continuous firing imposes a considerable labor burden.

In addition, when the liquid is injected, dripping liquid is applied to the hand holding the body from the nozzle tube, so that not only the liquid is stained, but also if the liquid is a sterilizing liquid or the like, it is not hygienic.

An object of the present invention is to provide a manually operated liquid ejecting apparatus which can be operated lightly with one hand by attaching simple parts.

[0008]

The liquid ejecting apparatus according to the present invention is externally fixed to a screw cap 4 for mounting an injector main body 3 screwed to the outer surface of the container body 1 mouth and neck portion 2. A fixed handle 9 having a cylindrical portion 5 having a box 8 protruding rearward from a rear portion of the cylindrical portion 5 and projecting engagement bosses 7, 7 on both left and right side surfaces from a front portion. A push-down head 11 having engaging elements 10, 10 protruding on both left and right side surfaces, a top plate 12 positioned on the top surface of the push-down head 11, and a handle from the rear of the top plate 12, The lever body 13 located above the body 6 is protruded, and a pair of links 15, 15 provided with long holes 14 respectively extend from both side edges of the top plate 12 diagonally forward and downward. An operation lever 16 pivotally supported by the mating bosses 7, 7 and having the elongated holes 14, 14 slidably engaged with the engagement members 10, 10. It is those of the mounted configuration.

[0009]

In the above construction, the push-down head 11 is normally pushed up to the upper limit by the return spring as shown in FIG. 1, and the engaging members 10, 10 of the push-down head 11 are operated in this state. And the lever body 13 of the operating lever 16 and the handle body 6 of the fixed handle 9 face up and down on the rear side of the container.

At the time of liquid injection, one hand, for example, the thumb may be placed on the upper surface of the lever body 13 and the other finger may be placed on the lower surface of the handle body 6, and the fingers may be gripped and tightened. Then
Since the fixed handle 9 does not move, the gripping operation causes the operation lever 16 to rotate clockwise to the position indicated by the two-dot chain line with the engagement bosses 7, 7 as fulcrums.

With this rotation, the long holes 14, 14 slide the engagement members 10, 10, so that the links 15, 15 push down the push-down head 11 via the engagement members 10, 10 against the return spring to push down. I do.
Therefore, the liquid stored in the cylinder of the injector main body 3 can be injected under pressure.

When the gripping operation is stopped after the liquid is ejected, the pressing head 11 returns to the upper solid line position with the operation lever 16 by the return spring.

In other words, according to this configuration, the liquid can be ejected by a one-hand grip operation, and the operation lever 16 and the fixed handle 9 are long, so that the operation is light.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The liquid injection device of the present invention is a screw cap 4 of the injector body 3.
The fixed handle 9 is provided on the
It is characterized by the fact that it is provided with 16 so that the injection operation can be performed with one hand and lightly by these gripping operations.

The main body 3 of the injector is well known as described in the section of the prior art, and the gist of the present invention is as follows.
Since it is not in the section, the injector body 3 will be briefly described here.

The injector main body 3 includes a vertical cylinder 17 internally fixed to the mouth of the container body 1 with a screw cap 4, a suction pipe 18 suspended from the bottom opening of the cylinder 17 to the inner bottom of the container body 1, A lower portion of the cylinder 17 includes a stem 19 which is connected to a cylindrical piston fitted inside the cylinder 17 and rises upward and outwardly, and a press-down head 11 with a nozzle tube 20 which is connected to the upper end of the stem 19. A suction valve is installed inside the opening, and a stem is inserted through a cylindrical piston inside.
19, a return spring that pushes up and urges the movable portion of the push-down head 11 is provided, and a discharge valve is provided inside the stem 19.

Accordingly, when the cylindrical piston is pushed down by the pushing down head 11 against the return spring via the stem 19 and presses down the cylindrical piston, the liquid in the cylinder 17 is pressurized. When the liquid can be ejected and the press-down of the press-down head 11 is stopped, the movable part rises and returns with the return spring, and the cylinder 17
Since the internal pressure becomes negative, the suction valve is opened, and the liquid in the container 1 is sucked into the cylinder 17 through the suction pipe 18.

The pressing head 11 has engaging elements 10, 10 projecting from both left and right sides. Also, reference numeral 21 in the figure denotes a push-down lock screw that is screwed into the screw cap 4 during distribution to lock an unnecessary push-down. This figure shows the ready-made injector main body 3 and is shown as it is. Not really needed.

The fixed handle 9 has a large number of vertical stripes 22 on its inner peripheral surface.
A handle body 6 having a free end side curved downward is protruded from one rear portion of the cylindrical portion 5 provided with an inward flange 23 at the lower peripheral edge, and a box 8 is protruded from the other side. 8 has a shape in which the engaging bosses 7, 7 protrude from both left and right side surfaces.

Prior to assembling the injector body 3 into the container body 1, the fixed handle 9 engages the vertical strip 22 with the vertical groove on the outer surface of the screw cap 4, and attaches the inward flange 23 to the cap 4.
An outer flange 23 is attached to the screw cap 4 so as to be fitted to the lower surface, and is assembled into the container body 1 together with the injector body 3.
Is fixed on the ridge 24 on the outer surface of the lower portion of the mouth and neck 2.

The operating lever 16 projects a lever body 13 rearward from a rear portion of a substantially triangular top plate 12 located immediately above the rear half portion of the top surface of the pressing head 11. A pair of links 15, 15, each having a long hole 14 opened diagonally forward and downward, extend substantially in parallel, and pivotal holes 25, 25 are formed at the ends of the links 15, 15.
It has a shape with a hole.

The operating lever 16 is provided at a pivot hole at the tip of the link.
25, 25 are loosely fitted to the engagement bosses 7, 7 on both sides of the box 8 of the fixed handle 9 and pivotally supported, and the slots 14, 14 are slidable on the engagement members 10, 10 on both sides of the press-down head 11. It is attached by being engaged.

In this embodiment, when the liquid is ejected, the handle body 6 and the lever body are always in the state shown in FIG. 1B.
It is sufficient to hold 13 with one hand and perform the gripping operation.

Then, since the fixed handle 9 does not move, the operation lever 16 is moved clockwise about the engagement bosses 7, 7 as fulcrums.
It turns to the position indicated by the dashed line. With this rotation, slot 1
Since the links 14 and 14 slide the engaging elements 10 and 10, the links 15 and 1
5 pushes down the push-down head 11 downwardly against the return spring via the engaging elements 10 and 10. Therefore, the liquid stored in the cylinder 17 of the injector main body 3 can be pressurized and injected from the nozzle tube 20 to the outside. That is, the injection operation can be performed with one hand, and since the lever body 13 and the handle body 6 are long, the operation is light. After the liquid is ejected, when the gripping is stopped, the respective parts return to the original positions indicated by the solid lines in the drawing by the return spring, and at this time, the cylinder 17 which has been negatively pressured sucks up the liquid from the container body 1 through the suction valve which is opened, and performs the next injection. Prepare.

In the above embodiment, if the engaging members 10, 10 are attached to both sides of the pressing head 11 by means such as fusion, the present invention can be applied to a ready-made injection device. In this case, only the pressing head 11 may be a new product with the engaging elements 10 and 10. Further, since the conventional push-down lock screw 21 does not function, an alternative lock function may be used. For example, a removable lock rod is interposed between the upper surface of the screw cap 4 and the lower surface of the press-down head 11 as one example.

[0026]

As described above, in the liquid ejecting apparatus according to the present invention, the fixed handle 9 is attached to the screw cap 4 of the injector body 3.
The operation lever 16 is mounted by slidably engaging the links 15, 15 with the press-down head 11. When the operation lever 16 disposed above and below and the fixed handle 9 are gripped and tightened, the rotation is performed. Since the push-down head 11 is pushed down via the links 15, 15 by the moving operation lever 16, the injection operation can be carried out with one hand and lightly, which is convenient. Further, since two simple components, the fixed handle 9 and the operation lever 16, may be attached to the injector main body 3, the configuration can be easily made, and there is an advantage that it can be applied to an existing product.

[Brief description of the drawings]

FIGS. 1A and 1B are a top view and a side view of a main part of an embodiment, respectively.

FIGS. 2A, 2B, and 2C are external perspective views of an operation lever, a pressing head, and a fixed handle of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 3 Injector main body 9 Fixed handle 11 Push-down head 16 Operation lever

Claims (1)

(57) [Scope of request for utility model registration] 1. A cylindrical cap 5 which is externally fixed to the screw cap 4 on a screw cap 4 for mounting an injector main body 3 screwed to the outer surface of the mouth and neck 2 of the container body 1. A fixed handle 9 is formed by projecting a handle body 6 rearward from the rear part and a box 8 projecting engaging bosses 7, 7 from both sides on the left and right sides from the front part. ,
A push-down head 11 having a projection 10 has a top plate 12 located on the top surface of the push-down head 11, and a lever body 13 located above the handle body 6 is projected from the rear portion of the top plate 12, and Board
12 A pair of links 15, each having a long hole 14 from each side edge,
15 extend diagonally forward and downward, and the ends of the links 15 and 15 are pivotally supported by the engaging bosses 7 and 7 and the elongated holes 14 and 14 are
A liquid ejection device having an operation lever 16 slidably engaged with 10, 10.