JP5025279B2 - Trigger type liquid ejector - Google Patents

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 having a liquid ejector main body provided with a nozzle and a trigger lever and a shroud covering the liquid ejector main body and ejecting liquid from an ejection hole of the nozzle by pulling the trigger lever have been proposed. ing.

  For example, in the technique described in Patent Document 1, an engagement protrusion that engages with each other is provided between a nozzle and a spin element that is fitted, and an operation plate that rotates together with the nozzle is operated, and these engagements are performed. By engaging the protrusions, the nozzle is positioned at the liquid ejection position.

  However, in the liquid ejector, the operation plate is rotated, and the engagement protrusion formed on the inner surface of the nozzle is engaged with the engagement protrusion of the spin element, thereby positioning the nozzle at the liquid ejection position. is doing. For this reason, there is a possibility that the engaging protrusion may be scraped or broken by the rotational torque of the operation plate. 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 liquid content, environmental stress destruction is likely to occur, and rotational torque from the operation plate is also involved. Since it will be applied to the mating protrusion, there is a risk of inducing environmental stress failure. Further, since the engaging protrusions are engaged with each other inside the nozzle, there is a problem that it is difficult to confirm the engaged state from the outside.

JP 2006-297219 A

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a trigger type liquid ejector that can suppress damage to parts due to nozzle positioning and can easily check the position of the nozzle. To do.

  The present invention includes a liquid ejector main body having a nozzle and a trigger lever, and a shroud that covers the liquid ejector main body, and a trigger type liquid ejection that ejects liquid from an ejection hole of the nozzle by pulling the trigger lever The nozzle is rotatable with respect to the liquid ejector body, and opens and closes a liquid flow path according to a rotation position of the nozzle when an operation lever attached to the nozzle is rotated. By providing a trigger-type liquid ejector provided with an abutting portion for abutting the operation lever with the shroud and positioning the nozzle at a position where the flow path opens. The object has been achieved.

  ADVANTAGE OF THE INVENTION According to this invention, the damage of the components accompanying positioning of a nozzle can be suppressed, and the trigger type liquid ejector which can perform the position confirmation of a nozzle easily 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 according to the present embodiment includes a liquid ejector body 2 including a nozzle 21 and a trigger lever 22, and a shroud 3 that covers the liquid ejector body 2.

  As will be described below, the liquid ejector main body 2 is supplied from the ejection hole 211 of the nozzle 21 to the main body frame 20 having the horizontal tube portion 201 and the vertical tube portion 202 that communicate with each other. Each component for forming a flow path for jetting is attached.

  A spin element 23 is attached to the front of the horizontal tube portion 201 of the main body frame 20 in the liquid ejection direction, and the nozzle 21 is located in front of the spin element 23 with an axis A passing through the ejection hole 211 as a central axis. It is rotatably attached to the liquid ejector body 2. A cylindrical portion 231 of the spin element 23 is fitted in a cylindrical portion 212 that extends to the opposite side of the ejection direction with respect to the ejection hole 211 of the nozzle 21 and opens. Grooves 213 and 232 are respectively provided on the inner peripheral surface of the cylindrical portion 212 of the nozzle 21 and the outer peripheral surface of the cylindrical portion 231 of the spin element 23, and the nozzle 21 is rotated around the axis A of the ejection hole 211. A liquid flow path is formed when the grooves 213 and 232 overlap each other.

  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 operation lever 24 is attached to the nozzle 21 by fitting the tubular portion 241 of the operation lever 24 to the outer tubular portion 214 that extends in the opposite direction to the ejection direction of the nozzle 21. Yes. In the present embodiment, with such a configuration, the nozzle 21 is provided so as to open and close the liquid flow path according to the rotational position of the nozzle 21 when the operation lever 24 is rotated about the axis A.

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

  A protrusion 243 that prohibits the pulling operation of the trigger lever 22 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 22, preferably a position where the operation lever 24 is in contact with the trigger lever 22, when the operation lever 24 is pulled, the pulling direction side of the trigger lever 22 comes into contact with the protrusion 243, and the trigger lever 22 is swung. Ban. In the present embodiment, the rod portion 244 of the operation lever 24 is provided so as to stop the swinging from the opposite side of the pull direction of the trigger lever 22. That is, the operation lever 24 also serves as a stopper that prohibits the pulling operation (swinging) of the trigger lever 22 from both sides of 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 mounted substantially horizontally on a portion of the main body frame 20 on the trigger lever 22 side 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 22 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 23. The shroud 3 is attached so as to cover the outside of the liquid ejector main body 2 by engaging with the protrusions 231.

  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. For this reason, the engagement protrusion is not provided between the nozzle 21 and the spin element 23 as in the prior art.

  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 pull operation of the trigger lever 22 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 232 of the spin element 23 are communicated with each other so that the liquid flow path is opened. Next, the trigger lever 22 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 254 is 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 232 and 213 between the spin element 23 and the nozzle 21. When the pulling operation of the trigger lever 22 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 intake hole 28.

  In the liquid ejector 1 of the present embodiment, the positioning of the nozzle 21 is performed only by the abutment of the rod portion 244 of the operation lever 24 and the abutment portion 31 of the shroud 3. It is possible to prevent damage to the parts due to the positioning of the nozzle by the dynamic operation, particularly damage to the parts due to environmental stress destruction. 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 ejection of the liquid containing hydrogen peroxide solution, especially hydrogen peroxide solution and surfactant.

The present invention is not limited to the embodiment.
In the liquid ejector of the present invention, like the liquid ejector 1 of the above-described embodiment, the positioning of the nozzle 21 is performed only by the collision between the rod portion 244 of the operation lever 24 and the impulse portion 31 of the shroud 3. Although it is preferable to reduce the rotational torque of the operating lever by such a collision, it can be used in combination with the conventional configuration in which the nozzle and the spin element are provided with an engaging projection to position the nozzle. it can.

  In the liquid ejector of the present invention, it is preferable that the operation lever 24 also serves as a stopper for prohibiting the pulling operation of the trigger lever 22 as in the above embodiment, but it does not have to function as a stopper.

It is a figure which shows one Embodiment of the trigger type liquid ejector of this invention, (a) is the sectional side view which notched and showed one part, (b) is the elements on larger scale. 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 22 Trigger lever 24 Operation lever 3 Shroud 31 Colliding part

Claims (3)

A trigger type liquid ejector comprising: a liquid ejector body comprising a nozzle and a trigger lever; and a shroud covering the liquid ejector body, wherein the liquid is ejected from an ejection hole of the nozzle by a pulling operation of the trigger lever. ,
The nozzle is rotatable with respect to the liquid ejector main body, and is provided so as to open and close a liquid flow path depending on a rotation position of the nozzle when an operation lever attached to the nozzle is rotated. And
The operating lever includes a cylindrical portion that is fitted to a cylindrical portion that extends in a direction opposite to the nozzle ejection direction, and a rod portion that is provided with a knob piece at a tip portion. A protrusion for prohibiting the pulling operation of the trigger lever is provided,
The shroud is provided with an abutting portion for abutting the rod portion to position the nozzle at a position where the flow path opens ,
When the operation lever is rotated and the flow path is closed by the nozzle, the rod portion is provided so as to stop swinging from the opposite side of the pull direction of the trigger lever, and the trigger The pulling side of the lever is in contact with the protrusion to inhibit the trigger lever from swinging, and the operating lever has a stopper that prohibits the trigger lever from swinging from both sides in the swinging direction. Trigger type liquid ejector that also serves as A groove that communicates when the cylindrical portion of the spin element is fitted to a cylindrical portion that extends in the opposite direction to the nozzle ejection direction, and the nozzle is positioned at the position where the flow path opens between the cylindrical portions. Is provided,
The trigger type liquid ejector according to claim 1, wherein positioning of the nozzle is performed only by a collision between the operation lever and the abutting portion. The trigger type liquid ejector according to claim 1 or 2 used for ejecting a liquid containing sodium hypochlorite.