JP4425591B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a trigger type liquid ejector, and is intended to ensure that even if an excessive force is applied to an arm of a nozzle cover, the transmission of the force is kept to a minimum, and adverse effects caused by the force are surely avoided. .

  The trigger type ejector that checks the operation lever and ejects the contents rotates the injection nozzle against the body of the ejector so that the contents are not discharged by inadvertent operation of the operation lever. There is known a structure that is movably provided and opens and closes the nozzle by appropriately rotating the injection nozzle to a predetermined position.

In addition, even if this type of ejector is in the closed state of the injection nozzle, if the operating lever is mistakenly checked, the pressure in the cylinder rises and the injection nozzle is rotated to open. There is also a concern that the contents may be blown out by the pressure even though the amount is small. As a countermeasure against such a problem, the open / close state of the injection nozzle can be easily confirmed visually, and the closed state of the nozzle There is also known a trigger type liquid ejector provided with a nozzle cover with an arm which is positioned in front of the operation lever and prevents the lever from being checked (see, for example, Patent Document 1).
JP 2000-70780 A

  By the way, the ejector with the nozzle cover has an advantage over the ejector that simply opens and closes the nozzle by simply rotating the nozzle, but an excessive force acting against the arm acts on the arm. In such a case, the force is transmitted to the mounting portion of the injection nozzle, and as a result, there is a possibility of causing problems such as lifting and dropping of the injection nozzle.

  The subject of this invention exists in the place which eliminates the above problems which were anxious about the conventional trigger type liquid ejector which has a nozzle cover with an arm.

In the present invention, a body provided with a pump that repeatedly checks the operation lever to suck and pressurize the liquid in the container, and is rotatably held at the front end of the body and fed through the feeding path of the body. An injection nozzle that injects liquid toward the outside, and the injection nozzle is rotated around its axis to switch the nozzle opening to an open state or a closed state, and the operation lever is checked when the nozzle opening is closed. A trigger type liquid ejector with a blocking arm,
The arm is located in front of the operation lever in a closed state of the nozzle opening and prevents its check, but it is a flexible arm that can follow the force that induces the forced check operation of the operation lever. der is, the connecting portion of the cover body includes a wide plate-shaped member parallel to the front wall of the operation lever, narrow plate-like member which rises in the direction along the side walls of the operating lever at one end of the wide plate-like member It is a trigger type liquid ejector characterized by having a substantially L-shaped cross-section .

  The arm can be connected integrally with the injection nozzle or can be integrally connected to a cover body fitted to the outer peripheral surface of the injection nozzle.

  In addition, the arm may be formed of a material having at least a connecting portion with the cover body.

  In the ejector according to the present invention, when the nozzle cover arm is in the closed state of the nozzle opening where the arm of the nozzle cover is located in front of the operation lever, it can be held in a locked state to prevent the operation lever from being checked. On the other hand, when an excessive force is applied, the arm is deformed in accordance with the force, so that the spray nozzle does not float or fall off.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  1 to 7 are external perspective views of a trigger type liquid ejector made of synthetic resin according to the present invention, FIG. 1 is a diagram showing a state in which an operation lever is locked, and FIG. 2 is a diagram showing a state in which the lock of the operation lever is released. 3 is a front view of the nozzle cover, FIGS. 4 and 5 are side views of the nozzle cover, FIG. 6 is a bottom view of the nozzle cover, and FIG. 7 is a cross-sectional view taken along line AA in FIG.

  In the figure, 1 is an operating lever, 2 is a body (including a shroud) having a pump P for repeatedly sucking and pressurizing the operating lever 1 to suck and pressurize the liquid in the container, and 3 is rotatably held at the tip of the body 2. An injection nozzle 4 for injecting the liquid pumped through the supply path of the body 2 toward the outside is a nozzle cover. The nozzle cover 4 is positioned on the front surface of the operation lever 1 with the cover body 4a fitted to the outer peripheral surface of the ejection nozzle 3 and the cover body 4a being integrally connected to the nozzle opening (hole through which the liquid is ejected). It consists of an arm 4b that prevents the check, and the nozzle opening can be switched to an open state or a closed state by gripping the arm 4b and rotating the injection nozzle 3 around its axis L. Yes.

Arm 4b of the nozzle cover 4 operated at the front wall 1a parallel wide member 4b ₁ and one end of the wide member 4b ₁ in the connecting portion operating lever 1 of the cover body 4a as shown the A-A cross section in FIG. 7 The operation lever 1 has a substantially L-shaped cross section combined with a narrow member 4b ₂ rising in a direction along the side wall surface 1b of the lever 1 so that the arm 4b is positioned in front of the operation lever 1. As shown in FIG. 8, even if a force F that induces a forced checking operation is applied to the nozzle, it can be deformed (rich in flexibility) as shown in FIG. In other words, the injection nozzle is not lifted, dropped, or damaged.

  The arm 4b has a substantially L-shaped cross-section at its connecting portion so as to be flexible, but this is made of a flexible material (for example, a soft polypropylene resin). There is no limitation on this point.

In particular, for the arm 4, when the cross-sectional shape is devised at the connecting portion of the arm 4 b so as to be flexible, not only the above-mentioned substantially L-shaped cross section but also the wide member 4 b by deleting the narrow member 4 b ₂ , for example. _Although it is possible to devise the shape as appropriate, such as having only one configuration, there is a concern that the rigidity in the direction in which the injection nozzle 4 is rotated may be reduced, so that the injection nozzle 3 can be rotated. It is important to select an appropriate shape that can ensure rigidity.

  Further, the arm 4b can be integrally connected to the nozzle cover 4b as described above, but may be directly connected to the injection nozzle 3 in a configuration in which the nozzle cover 4 is not used.

  The nozzle cover 4 originally has a function of easily switching the injection nozzle 3 to an open state or a closed state and a lock function to hold the operation lever 1 in an uncheckable state, and the arm 4b is made flexible. In this case, from the viewpoint of locking the operation lever 1, its function tends to be slightly lowered. For this reason, in the ejector according to the present invention, a lock mechanism for locking and releasing the operation lever 1 in conjunction with the rotation of the injection nozzle 4 may be provided separately.

Industrial applicability

  Even if an excessive force is applied to the arm of the nozzle cover, it can be deformed so as to follow the force, so that there is no problem that the spray nozzle is lifted or dropped, and the initial performance of the liquid ejector can be maintained for a long time.

It is an external appearance perspective view (locked state) of the trigger type liquid ejector according to the present invention. It is an external appearance perspective view of the state where the lock was released in the trigger type liquid ejector shown in FIG. It is a front view of a nozzle cover. It is a left view of a nozzle cover. It is a right view of a nozzle cover. It is a bottom view of a nozzle cover. It is AA sectional drawing of FIG. It is the figure which showed the deformation | transformation condition of the nozzle cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation lever 1a Front wall 1b Side wall 2 Body 3 Injection nozzle 4 Nozzle cover 4a Cover main body 4b Arm 4b ₁ Wide member 4b ₂ Narrow member P Pump L Axis center

Claims (4)

A body equipped with a pump that sucks and pressurizes the liquid in the container by repeatedly checking the operation lever, and the liquid that is rotatably held at the tip of the body and pumped through the feeding path of the body to the outside An injection nozzle that injects toward the head, and an arm that rotates the injection nozzle about its axis to switch the nozzle opening to an open state or a closed state and prevents the operation lever from being checked in the closed state of the nozzle opening; A trigger type liquid ejector comprising:
The arm is arresting its牽曳located in front of the operation lever in the closed state of the nozzle openings, Ri Ah in forced capable arms follow the external force to induce牽曳operation of the operating lever,
An abbreviated combination of a wide plate-like member parallel to the front wall of the operation lever and a narrow plate member that rises in the direction along the side wall of the operation lever at one end of the wide plate-like member. A trigger type liquid ejector having an L-shaped cross section .   The trigger type liquid ejector according to claim 1, wherein the arm is integrally connected to the ejection nozzle.   The trigger type liquid ejector according to claim 1, wherein the arm is integrally connected to a cover main body fitted to the outer peripheral surface of the injection nozzle.   The trigger type liquid ejector according to any one of claims 1 to 3, wherein at least a connecting portion of the arm to the cover body is made of a flexible material.

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