JP5008022B2 - Trigger type dispenser - Google Patents

Description

  The present invention relates to a trigger type dispenser.

  A cylinder that sucks and pressurizes the contents in the container by reciprocating the piston, a base cap that has an opening communicating with the cylinder and that is fixedly held at the mouth of the container, and rotates through the opening of the base cap A stem that can stand up and engage with a piston in the cylinder, an ejection nozzle that is connected to the tip of the stem and ejects the contents that have flowed out through the stem, and is supported by the base cap so as to be swingable. There has been proposed a trigger-type dispenser equipped with an operation lever that causes the stem to reciprocate together with the piston by repetition of scissors to suck and pressurize the contents to be ejected from the ejection nozzle (for example, see Patent Document 1).

The operation lever of the dispenser has a rear end portion pivotally attached to the upper end of the support portion standing at the rear portion of the base cap, covers the ejection nozzle, and hangs the front end forward of the stem. The nozzle is formed so as to protrude from a vertically long nozzle insertion hole so as not to hinder the operation. Then, by pulling the operation lever backward, the ejection nozzle connected to the operation lever is pushed down, and the contents in the container body are ejected from the ejection nozzle.
JP 2004-016952 A

  Trigger type dispensers are often used in water fields such as bathtubs, kitchens, etc. In that case, there is a risk that water may enter the interior of the opening from which the stem protrudes, and the jet will be ejected. There is a risk of the contents being diluted or soiled. A device equipped with an operation lever of the above-described form can cover the upper part with an operation lever. However, a nozzle insertion hole for projecting the ejection nozzle is essential, and the operation lever swings in this nozzle insertion hole. Therefore, it must be much larger than the diameter of the jet nozzle. That is, the nozzle insertion hole of this type of operating lever requires a width that allows the nozzle to move up and down relatively with respect to the operating lever, because the operating lever swings around the pivoting portion or the shaft mounting portion. For this purpose, at least the vertical width must be drilled that much larger than the diameter of the penetrating portion. As a result, water reaches between the opening portion and the stem through the nozzle insertion hole, and enters the inside.

  The present invention has been made in view of the above points, and in the trigger type dispenser provided with the operation lever of the above-described form, the nozzle insertion hole from which the nozzle protrudes can be liquid-tightly closed. We propose an excellent trigger-type dispenser that can prevent water from entering the cylinder as much as possible. In addition, the present invention proposes a trigger type dispenser that is simple in structure and can be formed by changing only a part of the structure of an existing dispenser, and that the above-mentioned effects can be obtained with minimal cost increase.

  The trigger type dispenser of the present invention is mounted on the container body by fitting a mounting cap on the outer periphery of the mouth and neck while the cylinder is suspended in the container body, and protrudes upward from the top opening of the mounting cap while protruding from the cylinder. A vertically moving member is provided in which an ejection head is fitted to an upper end of a stem that protrudes so as to be able to be pushed down in an urging state. In general, the vertically moving member is configured such that a piston sliding in the cylinder is connected to the lower end portion of the stem and constitutes a known pump mechanism together with the suction valve in the cylinder, and various specific configurations can be adopted.

  In addition, the vertical movement member is pushed down by the operation lever, and the operating member is lifted by the upward biasing force of an elastic material or the like, thereby sucking the container contents into the cylinder and ejecting it from the nozzle protruding in front of the ejection head. It is configured as described. The operation lever is pivotally connected to the support portion standing up from the mounting cap and pivotally connected to the support portion. The operation lever covers the upper portion of the vertical movement member and hangs down to the front of the vertical movement member and moves backward. In this configuration, a nozzle insertion hole that protrudes from the tip of the nozzle is adopted. The shape of the support portion is not particularly limited, but at least the rear end portion of the operation lever can be connected to the rear portion of the vertical movement member so as to be pivotable or pivotable, and can be manufactured if formed integrally with the mounting cap. You can get the above advantages.

  It is preferable that the operation lever basically adopts a configuration constituted by a belt-like substrate portion that is suspended from the rear side of the vertical movement member so that it can be pulled forward and side plate portions that are suspended on both sides thereof. The substrate portion may have any form as described above, but it is preferable that at least the sliding portion of the back cover plate be a smooth surface or a curved surface with respect to the sliding direction when the cover plate described later is mounted. Further, the nozzle insertion hole of the operation lever has a vertical width that can be rotated around the pivoting portion or the shaft attachment portion of the operation lever, and the horizontal width is not particularly limited, but for the purposes of the present invention, It is preferable to set a certain narrow width within a range in which relative movement with respect to the operation lever is easy.

  In the present invention, in the trigger type dispenser provided with such an operation lever, a cover plate that always closes the nozzle insertion hole of the operation lever is provided. The cover plate is made of a flexible synthetic resin material, etc., and slidably penetrates the nozzle and is attached to the front and / or back of the operation lever so as to be slidable, so that the nozzle insertion hole is always provided. Occludes liquid tightly.

  The sliding hole through which the nozzle slidably penetrates the cover plate may be selected in various ways depending on the relative angle with the operation lever before being pushed down, because the cover plate slides in close contact with the front and / or back of the operation lever. If the cross-section of the nozzle is cylindrical and the relative angle with the operation lever is orthogonal, it becomes a substantially circular sliding hole, and if the relative angle is inclined from the orthogonal state, it has an elliptical shape that penetrates it. Become. The sliding hole may basically be formed so as not to have a gap with the outer surface of the nozzle, and may be formed in a shape that penetrates and slides according to the outer peripheral shape of the nozzle. Further, it is preferable that the outer shape of the nozzle at least in the portion where the sliding hole slides is formed in a straight cylindrical shape having the same shape and the same diameter.

  As a means for sliding the cover plate in close contact with the front and / or back surface of the operation lever, a guide frame is provided for guiding the both sides of the cover plate slidably at predetermined positions on the front and / or back surface of the operation lever. There is a way. The guide frame can be formed by projecting a pair of parallel saddle-shaped protrusions at a predetermined position, or by providing a plurality of saddle-shaped protrusions at regular intervals at a predetermined position. Further, as another means, a concave groove having substantially the same width as the cover plate may be formed at a predetermined position straddling the nozzle insertion hole on the front surface and / or the back surface of the operation lever. In that case, a locking protrusion or a plurality of locking protrusions that slidably lock both side edges of the cover plate from both sides of the groove are provided. The covering plate is formed in a strip shape having the same width as a whole. Further, the cover plate may be formed of a synthetic resin material rich in elasticity.

The first means is configured as follows. That is, the mounting cap 10 is fitted to the outer periphery of the mouth-and-neck portion 2 and mounted to the container body B, and the ejection head 40 is projected to the upper end of the stem 41 protruding so as to be able to be pushed down from the top opening a of the mounting cap 10. The vertical movement member A ₃ is fitted, and the vertical movement member A ₃ is moved up and down by the operating lever A ₄ so that the contents in the container B are ejected from the nozzle 42 protruding forward of the ejection head 40. In the trigger type dispenser configured as described above, the operation lever A ₄ is connected to the support portion 20 erected from the mounting cap 10 so that the rear end portion can be pivoted, and the upper portion of the vertical movement member A ₃ is covered to move up and down. The moving member A ₃ is provided with a nozzle insertion hole 50 that hangs forward and projects the tip of the nozzle 42, slidably penetrates the nozzle 42, and closely slides on the front surface and / or the back surface of the operating lever A _4. The nozzle insertion hole 50 is always installed. Provided the covering plate A ₅ flexible tightly closed.

The second means is configured as follows. That is, in the first means, both sides of the covering plate A ₅ are slidably fitted as means for closely sliding the covering plate A ₅ on the front surface and / or the back surface of the operation lever A ₄ . and a guide frame 53 on the front and / or rear surface of the operating lever a _4.

In the trigger type dispenser of the present invention, since the nozzle insertion hole 50 of the operation lever A ₄ from which the nozzle 42 protrudes is always closed, the liquid can be reliably prevented from entering from there, and as a result, the stem 41 and the opening are opened. It is possible to prevent the liquid from entering from the gap with a as much as possible, and it is suitable for use in a water field. In addition, the structure is simple and only a new covering plate A ₅ is provided. Since the covering plate A ₅ can be formed of a general synthetic resin, it can be manufactured with low cost using conventional products. is there.

Further, as means for closely sliding the covering plate A ₅ on the front surface and / or the back surface of the operating lever A ₄ , a guide frame 53 that slidably fits both sides of the covering plate A ₅ is provided on the operating lever A ₄ . when provided on the surface and / or back surface, the sliding plate is no inconvenience such as away from the operating lever a ₄ backside, thereby enabling a more smooth operation can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of the liquid ejection container of the present invention. In the figure, A shows a trigger type dispenser attached to a container body B. FIG. The trigger-type dispenser A includes a cap member A _1, a cylinder A _2, a vertically movable member A _3, an operating lever A _4, and a covering plate A _5.

The cap member A ₁ is formed by integrally forming a mounting cap 10 and a support portion 20, and the mounting cap 10 is located on the inner side of the upper end edge of the peripheral wall 11 screwed to the outer periphery of the mouth neck portion 2 of the container body B. A top plate 12 whose central portion rises in a tapered shape is extended upward, and a guide tube 13 is erected at the center of the top plate 12 and its upper end is configured as an opening a through which the stem 41 is inserted. In addition, the support portion 20 rises backward from the upper end portion of the rear portion of the guide tube 13 and rises on both sides of the upper surface of the inclined plate 21 and the inclined plate 21 whose rear end portion is curved upward and the end surface faces upward. And a pair of side plates 22. If the upper end of the guide tube 13 is positioned above the lower end edge of the side plate portion of the operation lever, which will be described later, water can be prevented from entering from the upper end of the guide tube, which is the opening of the mounting cap, and the effect is greater.

In the cylinder A _2, a flange 30 protruding from the upper outer periphery is fitted to the inner peripheral upper end portion of the mounting cap peripheral wall 11 and suspended in the container body B, and the lower surface is placed on the upper surface of the mouth and neck portion 2 through the packing 31. Liquid-tight pressure contact. Inside the cylinder A _2, but not shown, which piston interlocking with the stem 41 is slidably fitted, also a coil spring is incorporated to bias the stem upward at all times, the lower end A suction valve is provided. Further, the cylinder A ₂ the lower end connecting the pipe 32 to be suspended in the container body B lower end.

Vertical movement member, injection head 40 includes a stem 41 and a piston, not illustrated, the upper end of the stem 41 which is interlocking with the piston and a lower sliding in cylinder A _2, mounting the cylinder A ₂ top opening cap 10 It protrudes through the opening a so that it can be pushed in an upward biased state. Further, the ejection head 40 is fitted to the upper end portion of the stem 41. The ejection head 40 has a nozzle 42 protruding forward.

The operating lever A ₄ are suspended rear end portion pivotally mounted on the upper end portion of the support portion 20 is pivotally connected to, the to cover the upper part of the vertical movement member A ₃ forward of the vertical movement member A ₃ In addition, it is provided so as to be able to swing in the front-rear direction around the shaft mounting portion. In addition, a nozzle insertion hole 50 for projecting the tip of the nozzle 42 is provided. More specifically, the operation lever A ₄ includes a substrate portion 51 and a pair of side plate portions 52 on both sides. The substrate portion 51 is brought into contact with the upper end surface of the inclined plate 21 so that the end surface of the rear end portion curved downward is locked so that it cannot be rotated further. It is formed in the shape of a belt plate that reaches the front via the head and curves downward and hangs the lower end to the front of the mounting cap 10. Further, the side plate portions 52 are respectively suspended downward from both sides of the substrate portion 51 to cover the upper both sides of the ejection head 40, and the rear end portions of the side plate portions 52 and the upper end portions of the side plates 22 of the support portion 20 The shaft is attached between. The nozzle insertion hole 50 is drilled in a long strip shape in the longitudinal direction across the front from the top of the substrate portion 51, at the time of uppermost vertical movement member A _3, the lower surface nozzle insertion hole of the nozzle 42 It is configured to abut against the lower end edge of 50. Further, the cylindrical protrusions 43 projecting on both sides of the ejection head 40 are pressed by the plate-shaped protrusions 55 projecting on the both side plate portions 52 of the operation lever A ₄ so that the vertical movement member A ₃ is pushed down. Yes. Plate-like projection 55 pushes while sliding the peripheral surface of the cylindrical projection 43 with the rotation of the operating lever A _4.

Coated plate A ₅ are, without a long strip-shaped in the longitudinal direction formed of a resilient synthetic resin material, with inserting the nozzle 42 slidably sliding hole 60 bored in a predetermined position, operation The guide frame 53 formed on the back surface of the lever A ₄ is slidably fitted on both sides, and one surface is slidably mounted on the back surface of the operation lever A _{4 so} that the nozzle insertion hole 50 is liquid-tightly closed. is doing. As shown in an enlarged view in FIG. 4, the guide frame 53 is configured by forming a pair of left and right protrusions 54 having a vertical cross-sectional shape at a predetermined position on the back surface of the substrate portion 51 of the operation lever A ₄ .

The operation of the trigger type dispenser of the present invention will be described. The vertical movement member A ₃ is pushed down against the upward biasing force by pulling the front portion of the operation lever A ₄ backward, and the contents in the container body are driven by the internal pump mechanism. Is ejected from the nozzle 42. When the pressing of the operating lever A ₄ is released, the up and down moving member A ₃ is raised by the upward biasing force, and accordingly the operating lever A ₄ returns to its original state even if it rotates around the shaft attachment portion. content in the container body B is sucked through the pipe 32 into the cylinder a ₂ by when internal pump mechanism.

During such a content ejection operation, the cover plate A ₅ moves while closing the nozzle insertion hole 50. First, when the operating lever A ₄ is retracted backward, the cover plate A ₅ is pivotally attached to the inner surface of the operating lever A ₄ while the sliding hole 60 slides backward from the state shown in FIG. Moves in a sliding direction. As shown in FIG. 2, the lower end edge of the cover plate A ₅ is located below the lower end edge of the nozzle insertion hole 50 at the limit point where the operation lever A ₄ is fully pulled, and the nozzle insertion hole 50 is closed. When the pressing of the operating lever A ₄ is released from the state shown in FIG. 2, the sliding hole 60 slides forward of the nozzle 42 as the vertical movement member A ₃ rises, and the operating lever A _{4 With} respect to the inner surface, the cover plate A ₅ slides in the direction opposite to the axially attached portion and returns to the state shown in FIG.

5 to 7 show another example of the present invention. In the example of FIG. 1, the cover plate A ₅ is provided on the front surface of the operation lever A ₄ instead of the back surface. As shown in FIG. 7, a guide frame 53 having a pair of left and right protrusions 54 having a vertical cross-sectional shape is provided at predetermined positions on both sides of the nozzle insertion hole 50 on the surface of the substrate portion 51 of the operation lever A _4. the coated plate a ₅ which has slidably fitted to opposite side edges is provided. Also slidably it is inserted the nozzle 42 into the slide hole 60 bored in the lateral center position of the cover plate A _5. Other configurations are the same as those in the example of FIG. Further, the operation is basically the same as that of FIG.

In each of the above examples, one cover plate A ₅ is used. However, two cover plates are provided on the front and back surfaces of the operating lever A _{4 so} as to be slidable in close contact with each other. Also provided as an example of the present invention are each provided with a sliding hole through which a nozzle is slidably inserted.

It is a longitudinal cross-sectional view of this invention trigger type dispenser. Example 1 It is a longitudinal cross-sectional view at the time of the liquid ejection of this invention trigger type dispenser. Example 1 It is a top view of this invention trigger type dispenser. Example 1 It is a principal part expanded sectional view of the coating plate part in this invention. Example 1 It is a longitudinal cross-sectional view of this invention trigger type dispenser. (Example 2) It is a longitudinal cross-sectional view at the time of the liquid ejection of this invention trigger type dispenser. (Example 2) It is a principal part expanded sectional view of the coating plate part in this invention. (Example 2)

Explanation of symbols

A ... Trigger type dispenser
A ₁ … Cap member
10… Installation cap
11 ... peripheral wall, 12 ... top plate, 13 ... guide tube, a ... opening
20 ... Support part
21 ... Inclined plate, 22 ... Side plate
A ₂ ... Cylinder
30 ... Flange, 31 ... Packing, 32 ... Pipe
A ₃ … Vertical movement member
40 ... ejecting head, 41 ... stem, 42 ... nozzle, 43 ... cylindrical projection
A ₄ … Control lever
50 ... Nozzle insertion hole, 51 ... Substrate, 52 ... Side plate, 53 ... Guide frame, 54 ... Projection,
55… Plate projection
A ₅ … Coated board
60 ... sliding hole B ... container 2 ... mouth neck

Claims (2)

With neck (2) with the outer periphery to the mounting cap (10) fitted engaged for mounting on the container body B, and projecting depressible above biasing condition from the top opening (a) of the mounting cap (10) stem ( comprising a vertically movable member which is fitted the injection head (40) at the upper end of 41) (a _3), the operating lever (a ₄₎ by vertical movement member (a ₃₎ is moved up and down the the container body (B) in the the contents were a trigger-type dispenser which is composed as jetted from a nozzle (42) which projects forwardly of the injection head (40), said operating lever (a ₄₎ comprises a support portion erected from the mounting cap (10) together pivotally connecting the rear end portion (20), vertically movable (a ₃₎ to cover the upper part of the vertical movement member (a ₃₎ hangs down forward, and protrudes a nozzle (42) tip is provided with a nozzle insertion hole (50) were, sliding the nozzle (42) Together pass through the ability operating lever (A ₄₎ surfaces and / or constantly mounted closely slidably on the back nozzle insertion hole (50) a flexible covering plate for closing liquid-tightly the (A ₅₎ Trigger-type dispenser characterized by providing Surface and / or back surface covering plate of the operating lever (A ₄₎ (A ₅₎ as a means to closely slide, covering plate (A ₅₎ slidably fitted to the guide frame on both sides of (53) The trigger type dispenser according to claim 1, wherein is provided on the front surface and / or the back surface of the operation lever ( A ₄ ) .

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