JP2008194643A - Trigger type liquid ejector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trigger type liquid ejector capable of suppressing the damage of the fitting part of a nozzle and a spin element and capable of stably ejecting a liquid. <P>SOLUTION: The trigger type liquid ejector is equipped with the nozzle 21, the spin element 22 and a trigger lever 23 and the liquid is ejected from the jet orifice 211 of the nozzle 21 through the spin element 22 by the drawing operation of the trigger lever 23. The fitting part 221 of the spin element 22 is fitted and inserted in the cylindrical part 212 extended in the direction opposite to a liquid ejection direction of the jet orifice 211 of the nozzle 21 and the grooves 213 and 222 mutually communicating with the cylindrical part 212 and the fitting part 221 to form a liquid flow channel are respectively provided and an expanded part 214 having a curved surface is provided to the outer peripheral surface of the cylindrical part 212 corresponding to the grooves provided to the cylindrical part 212. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a trigger type liquid ejector (hereinafter also simply referred to as a liquid ejector) used by being mounted on a container containing a liquid.

  Various liquid ejectors that include a nozzle, a spin element, and a trigger lever, and that eject liquid from the ejection hole of the nozzle via the spin element by pulling the trigger lever have been proposed (see, for example, Patent Document 1). ). In such a liquid ejector, a groove communicating with each other is formed in the fitting portion between the cylindrical portion and the spin element that extend in the opposite direction to the liquid ejection direction with respect to the nozzle ejection hole, and a flow path is formed. Liquid is ejected from the ejection hole through the flow path.

  By the way, in such a liquid ejector, when a groove is provided in the fitting portion between the nozzle and the spin element, the cross-sectional form of the groove portion is not uniform (thin wall). For this reason, as in the liquid ejector described in Patent Document 1, when the nozzle is rotated to form the liquid flow path at a specific rotation position, the liquid is easily damaged. In particular, the nozzle is subjected to fitting pressure due to fitting with other components such as a spin element, and because it is in contact with the content liquid, environmental stress destruction is likely to occur, which may cause environmental stress destruction. .

JP 2006-136803 A

  The present invention has been made in view of the above problems, and provides a trigger type liquid ejector that can suppress damage to a fitting portion between a nozzle and a spin element and can stably eject liquid. With the goal.

  The present invention is a trigger type liquid ejector that includes a nozzle, a spin element, and a trigger lever, and that ejects liquid from an ejection hole of the nozzle via the spin element by pulling the trigger lever. A fitting part of the spin element is fitted into a cylindrical part extending in the opposite direction to the liquid ejection direction of the ejection hole, and the liquid channel is formed in communication with the cylindrical part and the fitting part. Provided is a trigger type liquid ejector provided with a bulging portion having a curved surface on the outer peripheral surface of the cylindrical portion corresponding to the groove provided in the cylindrical portion. This achieves the object.

  ADVANTAGE OF THE INVENTION According to this invention, the trigger type liquid ejector which can suppress the damage of the fitting part of a nozzle and a spin element and can eject a liquid stably is provided.

  The present invention will be described below based on preferred embodiments with reference to the drawings.

FIG.1 and FIG.2 is the schematic diagram which showed one Embodiment of the liquid ejector of this invention.
The liquid ejector 1 of the present embodiment includes a liquid ejector body 2 including a nozzle 21, a spin element 22, and a trigger lever 23, and a shroud 3 that covers the liquid ejector body 2.

  As will be described below, the liquid ejector main body 2 is connected to the main body frame 20 having the horizontal tube portion 201 and the vertical tube portion 202 that communicate with each other through the spin element 22 by pulling the trigger lever 23. Each part for forming the flow path for ejecting a liquid from 21 ejection holes 211 is attached and comprised.

  A spin element 22 is attached to an end of the horizontal tube portion 201 of the main body frame 20 in the liquid ejection direction (front), and an axis A through which the nozzle 21 passes through the ejection hole 211 is disposed in front of the spin element 22. As a central axis, it is rotatably attached to the liquid ejector body 2. A cylindrical fitting portion 221 in front of the spin element 22 is fitted and inserted into a cylindrical portion 212 that extends and opens to the opposite side (rear) of the ejection direction of the liquid with respect to the ejection hole 211 of the nozzle 21. ing. Grooves 213 and 222 are respectively provided on the inner peripheral surface of the cylindrical portion 212 of the nozzle 21 and the outer peripheral surface of the fitting portion 221 of the spin element 22, and the nozzle 21 is rotated around the axis A of the ejection hole 211. When these grooves 213 and 222 overlap with each other, a liquid flow path is formed. A bulging portion 214 having a curved surface corresponding to the cross section of the groove 222 is provided on the outer periphery of the cylindrical portion 212. The curvature of the surface of the bulging portion 214 is set to the same curvature as that of the groove 213, and the cylindrical portion 212 has a uniform thickness at the groove 213.

  An operation lever 24 that rotates the nozzle 21 around an axis A passing through the ejection hole 211 is attached to the nozzle 21. In the present embodiment, the operating lever 24 is attached to the nozzle 21 by fitting the cylindrical portion 241 of the operating lever 24 to the outer cylindrical portion 215 extending on the opposite side (backward) to the ejection direction of the nozzle 21. ing. In the present embodiment, with such a configuration, the nozzle 21 is provided so as to open and close the liquid flow path depending on the rotation position when the operation lever 24 is rotated about the axis A.

  The trigger lever 23 is attached to the spin element 22 and / or the main body frame 20 so as to be able to swing around the rotation center O of the side surface portion of the main body frame 20.

  A protrusion 243 that prohibits the pulling operation of the trigger lever 23 is provided on the knob piece 242 at the tip of the operation lever 24. When the operation lever 24 is rotated to a position close to the trigger lever 23, preferably to a contact position, when the trigger lever 23 is pulled, the pulling direction side of the trigger lever 23 comes into contact with the protrusion 243, and the trigger lever 23 is swung. The movement is prohibited. Further, in the present embodiment, the rod portion 244 of the operation lever 24 is provided so as to stop its swinging from the side opposite to the pulling direction of the trigger lever 23. That is, the operation lever 24 also serves as a stopper that prohibits the pulling operation (swinging) of the trigger lever 23 from both sides in the swinging direction. Prevents accidental eruption.

  In the main body frame 20, a liquid passing pipe body 25 is attached to a lower part of the vertical pipe part 202. A flange portion 251 is provided at a lower portion of the liquid passage tube 25, and a cap 252 for mounting the liquid ejector 1 on a container (not shown) is supported on the flange portion 251. A suction pipe 253 is inserted into the liquid passing tube body 25 from its lower end. Further, two check valves 254 and 255 are arranged in the upper and lower portions inside the liquid passing tube 25.

  A cylinder 26 is attached substantially horizontally to a portion of the main body frame 20 that is positioned in front of the vertical tube portion 202 and below the horizontal tube portion 201. A piston 261 that slides in the cylinder 26 by a pulling operation of the trigger lever 23 is disposed in the cylinder 26 via a spring 262. The inside of the cylinder 26 and the inside of the liquid passing tube 25 are communicated with each other by a communication passage 27 that penetrates the wall surface of the cylinder 26 and the liquid passing tube 25. The side surface of the cylinder 26 is provided with an intake hole 28 for introducing air from the outside into the container. The intake hole 28 communicates with an intake passage (not shown) that communicates with the container.

  The shroud 3 is provided with an abutting portion 31 for abutting the operating lever 24 to position the nozzle 21 at a position where the liquid flow path opens. In the liquid ejector 1 of the present embodiment, the end surface of the cutout portion 33 provided on the left side surface portion 32 is an abutting portion on one side surface portion of the shroud 3 on the liquid ejection direction side.

  Engagement protrusions 34 to 36 are provided on the inner surface of the shroud 3, and these engagement protrusions, engagement protrusions 203 and 204 provided on the frame 20, and engagement provided on the spin element 22. The shroud 3 is attached so as to cover the outside of the liquid ejector main body 2 by engaging the protrusions 223 with each other.

  In the liquid ejector 1 of the present embodiment, the positioning of the nozzle 21 is performed only by the abutting of the rod part 244 of the operation lever 24 and the abutting part 31 of the shroud 3. The bulging part 214 provided in the cylindrical part 212 does not participate in positioning.

  When liquid is ejected by the liquid ejector 1, first, the cap 252 is screwed onto the mouth of a container (not shown) in which the liquid is stored, and the liquid ejector 1 is attached to the container. Next, by rotating the operation lever 24 to the position of the phantom line in FIG. 2A, the nozzle 21 is rotated around the axis A, and the prohibition of the trigger lever 23 is released. Then, the rod portion 244 is abutted against the abutting portion 31 of the shroud 3 so that the groove 213 of the nozzle 21 and the groove 222 of the spin element 22 communicate with each other, and the liquid flow path is opened. Next, the trigger lever 23 is pulled against the elastic force of the spring 262, the piston 261 is slid and pushed in the cylinder 26, and the inside of the vertical pipe portion 202 is pressurized, whereby the check valve 354 is moved. The liquid that is opened and pumped through the horizontal tube portion 201 is ejected from the ejection hole 211 of the nozzle 21 through the grooves 222 and 213 between the spin element 22 and the nozzle 21. When the pulling operation of the trigger lever 23 is released, the piston 261 returns to the original position by the elastic force of the spring 262, and the check valve 255 is opened by the negative pressure of the vertical pipe portion 202, and the suction pipe 253 is opened. The content liquid is sucked and air is introduced into the container from the outside through the air hole 28.

  In the liquid ejector 1 of the present embodiment, since the bulging portion 214 is provided in the tubular portion 212 of the nozzle in the fitting portion between the nozzle 21 and the spin element 22, the fitting portion accompanying the operation of the operation lever 24. Damage can be suppressed. Further, since the positioning of the nozzle 21 is performed only by the abutting of the rod portion 244 of the operating lever 24 and the abutting portion 31 of the shroud 3, damage to parts due to the positioning of the nozzle due to the rotating operation of the operating lever 24, particularly In addition, damage to parts due to environmental stress failure can be prevented. Further, the position of the nozzle 1 can be easily confirmed by visual recognition whether or not the operation lever 24 is abutted against the abutting portion 31 of the shroud and a sense of agitation that reaches the fingers.

  The liquid ejector of the present invention is not particularly limited in the liquid to be ejected, but is preferably used for ejecting a liquid containing sodium hypochlorite, particularly sodium hypochlorite and a surfactant. In addition, it is used also for the ejection of the liquid containing hydrogen peroxide water, especially surfactant.

The present invention is not limited to the embodiment.
In the liquid ejector of the present invention, the nozzle 21 is positioned only by the abutting of the rod portion 244 of the operation lever 24 and the abutting portion 31 of the shroud 3 as in the liquid ejector 1 of the above embodiment. However, positioning may be performed by providing a locking recess in the shroud 3 and locking the rod portion to the locking recess.

  Further, as in the above-described embodiment, the liquid ejector of the present invention is configured such that the nozzle is rotatable about the axis of the injection hole, and the groove is formed according to a rotation position when an operation lever attached to the nozzle is rotated. Although it is preferable that the two are connected to form a fluid flow path, the present invention can also be applied to a liquid ejector in which the nozzle does not rotate.

  In the liquid ejector of the present invention, it is preferable that the operation lever 24 also serves as a stopper that prohibits the pulling operation of the trigger lever 23 as in the above-described embodiment, but it does not have to function as a stopper.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the trigger type liquid ejector of this invention, (a) is the sectional side view shown notched, (b) is a partial enlarged view, (c) is in (b) It is sectional drawing in the front-end | tip of the fitting part of a spin element for the fitting part of the cylindrical part of a nozzle, and the fitting part of a spin element. It is a figure which shows the external appearance of the trigger type liquid ejector of the embodiment, (a) is a front view, (b) is a side view, (c) is a top view of (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Trigger type liquid ejector 2 Liquid ejector main body 21 Nozzle 211 Ejection hole 212 Cylindrical part 213 Groove 214 Swelling part 22 Spin element 221 Fitting part 222 Groove 23 Trigger lever 24 Operation lever 3 Shroud 31 Collision part

Claims (5)

A trigger type liquid ejector comprising a nozzle, a spin element and a trigger lever, wherein the liquid is ejected from an ejection hole of the nozzle via the spin element by pulling the trigger lever;
The fitting portion of the spin element is fitted and inserted into a cylindrical portion that extends on the opposite side to the liquid ejection direction of the ejection hole in the nozzle,
Grooves that communicate with each other to form the flow path of the liquid are provided in the tubular portion and the fitting portion, respectively.
A trigger type liquid ejector in which a bulging portion having a curved surface is provided on the outer peripheral surface of the cylindrical portion corresponding to the groove provided in the cylindrical portion.   The trigger type liquid ejector according to claim 1, wherein the bulging portion is provided so that the thickness of the cylindrical portion is substantially uniform at the bulging portion.   The nozzle is provided so as to be rotatable with respect to the liquid ejector main body and to allow the grooves to communicate with each other depending on a rotation position of the nozzle when an operation lever attached to the nozzle is rotated. The trigger type liquid ejector according to claim 1 or 2.   The trigger type liquid ejector according to any one of claims 1 to 3, wherein the operation lever also serves as a stopper that abuts on a side in a pulling direction of the trigger lever and prohibits a pulling operation.   The trigger type liquid ejector according to any one of claims 1 to 4, which is used for ejecting a liquid containing sodium hypochlorite.