JP4451191B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a pressure accumulation type trigger type liquid ejector having a valve body that opens and closes with a specified pressure on the back surface of an injection nozzle, and the initial priming for discharging the internal air can be easily performed. It is intended to smoothly eject liquid by checking.

  Trigger type spray that can be attached to a container containing wrinkle remover, detergent, clothing paste, residential wax, hair conditioner, fragrance, etc., and the contents in the container can be appropriately ejected by checking the operation lever. The pump is equipped with a pump mechanism that controls the suction, pressurization, and pumping of the liquid in the body to which the injection nozzle is attached. The pump mechanism is operated by the operation lever, enabling efficient ejection of the contents. (For example, refer to Patent Document 1).

JP-A-10-128180

  By the way, although the conventional liquid ejector depends on the viscosity of the liquid filled in the container, most of them require a relatively large force when checking the operation lever, and smooth the liquid with a smaller force. It has been desired to develop an ejector with good operability that can be sprayed on the surface.

  An object of the present invention is to propose a trigger type liquid ejector with improved operability capable of ejecting liquid with a small force (checking force) without complicating the internal structure.

The present invention repeatedly pumps the operation lever to suck and pressurize the liquid in the container, and a body having a feeding path for feeding the contents pressurized by the pump toward the injection nozzle, A trigger-type liquid ejector comprising a valve body that is elastically supported so as to be reciprocally movable at the exit end of the feeding path of the body and ejects liquid toward the outside through the ejection nozzle through an opening operation exceeding a specified pressure. And
A spacer that has at least one narrow groove extending from the inlet side end to the outlet side end and that reduces the liquid feeding amount by reducing the cross-sectional area of the feeding path is disposed in the feeding path. ,
The spacer includes a shaft positioned in the feeding path, and a guide integrally connected to an end of the shaft at the outlet end of the feeding path and movably holding the valve body. Type liquid ejector.

In the ejector configured as described above, the guide is housed inside the body together with the valve body, and a connecting portion that supports the injection nozzle at the tip thereof, and an opening portion of the injection nozzle that is provided outside the connecting portion. Or the convex part or opening which fits into a convex part and prevents omission of an injection nozzle can be provided.

  In addition, the guide includes a front connecting portion that supports the injection nozzle by housing the main body portion of the guide together with the valve body, and the injection nozzle that is integrated with the front connecting portion on the outside of the body together with the front connecting portion. It is also possible to provide a rear side connecting portion for retaining and locking.

  Furthermore, the valve body is provided with a through hole for discharging the air in the moving space toward the injection nozzle in accordance with the operation thereof, or the guide is provided with a through hole in the moving space in accordance with the operation of the valve body. A through-hole that discharges air toward the body can also be provided.

  Furthermore, in the present invention, it is possible to arrange a shroud that has a front end that abuts against the rear end of the injection nozzle and covers the entire body, or a shroud that covers the injection nozzle and the body while leaving the front end of the injection nozzle.

  If a spacer is arranged in the liquid supply path and the cross-sectional area of the path is reduced, the amount of liquid supplied when checking the operation lever is reduced, and the force applied to the operation is reduced.

  Further, since the amount of air existing in the body is reduced by arranging the spacer, the number of times of operation lever check-up can be reduced during the initial priming for replacing air and liquid.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an embodiment of a trigger type liquid ejector according to the present invention. In the figure, reference numeral 1 denotes an operation lever that is swingably held via a pivot shaft, and 2 denotes a pump that repeatedly checks the operation lever 1 to suck and pressurize liquid in the container.

  The pump 2 includes a cylinder 2a and a piston 2b that can reciprocate within the cylinder 2a.

  Reference numeral 3 denotes a body that forms a basic skeleton of the ejector, and the body 3 is provided with a feed path 3a for feeding the liquid pressurized by the pump 2 toward the jet nozzle n.

  Reference numeral 4 denotes a valve body that is elastically supported via a spring S at the outlet end of the feeding path 3a of the body 3 and ejects liquid toward the outside through the ejection nozzle n by an opening operation exceeding a specified pressure. A small hole is formed in the front end wall of the valve body 4, and the air in the moving space t is quickly discharged through the small hole in accordance with the operation of the valve body 4, so that an air cushion phenomenon does not occur. The operation of the operation lever 1 becomes smooth.

Reference numeral 5 denotes a spacer which is arranged in the feed path 3a and reduces the liquid feed amount by reducing its cross-sectional area. The spacer 5 includes a shaft 5a (such as a spline shaft) having narrow grooves m ₁ and m ₂ extending from the input side end 3a ₁ to the output side end 3a ₂ of the feed path 3a, and the feed path 3a. It consists of a guide 5b that is integrally connected to the end of the shaft 5a at the outlet end 3a ₂ and holds the valve body 4 movably. Note that the narrow grooves m ₁ and m ₂ are not necessarily composed of two, but at least one is sufficient, and the number thereof can be selected as appropriate.

Further, 6 is provided integrally with the body 3 and the guide 5b is housed inside together with the valve body 4, and a connecting portion for supporting the injection nozzle n at its tip, and 7 is provided outside the connecting portion 6 and provided for the injection nozzle n. A convex portion 8 that fits into an opening h formed in the outer wall n ₁ to prevent the ejection nozzle n from coming off, and 8 is a shroud that has a tip that abuts against the rear end portion of the ejection nozzle n and covers the entire body 3. is there.

When the liquid sucked into the cylinder 2 a through the suction pipe 9 for sucking the liquid in the container and the check valve 10 is pressurized and compressed by further checking of the operation lever 1, the liquid is supplied to the feeding path 3 a of the body 3. Flows into the valve body 5 through the narrow grooves m ₁ and m _2, and the valve body 5 becomes a pressure higher than a specified pressure (pressure exceeding the elastic force of the spring S), so that the valve body 5 The liquid is separated (opened) from the valve seat v formed on the back surface, and the liquid is ejected from the ejection nozzle n toward the outside.

In the liquid ejector configured as described above, since the pressurized and compressed liquid is fed through the narrow grooves m ₁ and m _{2 of the} spacer 5, the amount of liquid fed is small, and thus the operation lever 1 is checked. The power to hesitate is small and comfortable operation is possible.

  The spacer 5 is an integral part of the shaft 5a and the guide 5b for holding the valve body 4. The number of parts does not increase, and the internal space into which air enters is small, so the number of checks in the initial priming can be reduced. Can be ejected quickly (rising up quickly).

FIG. 2 shows another embodiment of the ejector according to the present invention.
In this example, the spacer 5 includes a shaft 5a and a guide 5b. The guide 5b further includes a front connecting portion 5c for supporting the injection nozzle n by accommodating a main body portion of the guide 5b together with the valve body 4 and the front side. A rear connection portion 5d that is integrated with the connection portion 5c and prevents the injection nozzle n from coming off and locked to the outside of the body 3 together with the front side connection portion 5c, and the movement space t according to the operation (movement) of the valve body 4. A through-hole 5e is provided to discharge the air inside toward the body.

  This ejector is also capable of ejecting liquid in the same manner as shown in FIG. 1, and instead of the small hole provided in the front end wall of the valve body 4 of the ejector shown in FIG. By forming the through hole 5e in the guide 5b, the air cushion phenomenon is caused because the air in the moving space t is quickly discharged through the through hole 5e in accordance with the d operation of the valve body 4 as in the above-described embodiment. The operation lever 1 operates smoothly.

  In order to prevent the rear connection portion 5d from coming off and locked to the body 3, an opening is formed in the rear connection portion 5d as shown in the figure, and a convex portion 7 provided outside the body 3 is engaged with this opening. However, the rear connecting portion 5d may be provided with a convex portion, and an opening with which the convex portion engages may be provided in the body 3, and this point is not particularly limited.

  FIGS. 3 (a) and 3 (b) show still another embodiment of the liquid ejector according to the present invention.

  In this example, the internal structure is basically the same as that shown in FIG. 1, and only the shroud 8 is different.

  The shroud 8 has its tip portion extended so as to cover the spray nozzle n and the body 3 while leaving the tip of the spray nozzle n. To prevent the intrusion.

  It is possible to provide a trigger-type liquid ejector with good operability that requires only a small amount of initial priming and can smoothly eject liquid by simply checking with a small force.

It is the figure which showed embodiment of the trigger type | mold liquid ejector according to this invention. It is the figure which showed other embodiment of the trigger type | mold liquid ejector according to this invention. (A) (b) is the figure which showed other embodiment of the trigger type | mold liquid ejector according to this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation lever 2 Pump 2a Cylinder 2b Piston 3 Body 4 Valve body 5 Spacer 5a Shaft 5b Guide 5c Front side connection part 5d Rear side connection part 5e Through-hole 6 Connection part 7 Protrusion part 8 Shroud 9 Suction pipe 10 Check valve n Injection nozzle S Spring t Moving space v Valve seat

Claims (7)

A pump that repeatedly checks the operation lever to suck and pressurize the liquid in the container, a body having a supply path for supplying the liquid pressurized by the pump toward the injection nozzle, and the supply of the body A trigger type liquid ejector comprising a valve body that is elastically supported so as to be reciprocally movable at an exit end of a path and ejects liquid toward the outside through the ejection nozzle by an opening operation exceeding a specified pressure,
A spacer that has at least one narrow groove extending from the inlet side end to the outlet side end and that reduces the liquid feeding amount by reducing the cross-sectional area of the feeding path is disposed in the feeding path. ,
The spacer includes a shaft positioned in the feeding path, and a guide integrally connected to an end of the shaft at the outlet end of the feeding path and movably holding the valve body. Type liquid ejector.   In the body, the guide is housed together with the valve body, and a connecting portion for supporting the injection nozzle at the tip thereof is provided. The connecting portion is provided on the outside of the connecting portion and is fitted into the opening or convex portion of the injection nozzle. The trigger type liquid ejector according to claim 1, further comprising a projection or an opening for preventing the nozzle from coming off.   3. The trigger type liquid ejector according to claim 1, wherein the valve body is provided with a through-hole for discharging air in the moving space toward the injection nozzle side in accordance with the operation thereof.   The guide is provided with a front connection part that houses the main body of the guide together with the valve body and supports the injection nozzle at the tip thereof, and the injection nozzle is integrated with the front connection part on the outside of the body together with the front connection part. The trigger type liquid ejector according to claim 1, further comprising a rear side connecting portion for retaining and locking.   The trigger type liquid ejector according to claim 4, wherein the guide is provided with a through hole for discharging the air in the moving space toward the body side in accordance with the operation of the valve body.   The trigger type liquid ejector according to any one of claims 1 to 5, further comprising a shroud that has a front end that abuts against a rear end portion of the injection nozzle and covers the entire body.   The trigger type liquid ejector according to any one of claims 1 to 5, further comprising a shroud that covers the spray nozzle and the body while leaving a tip of the spray nozzle.

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