JP4756542B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a trigger type liquid ejector.

  There has been proposed an auxiliary cover for a pump dispenser that is attached to a pump dispenser that ejects liquid in a container body by moving the nozzle head up and down and has a function of pushing the nozzle head downward by a lever portion. (For example, see Patent Document 1)

  The auxiliary cover for the pump dispenser includes a hollow base portion attached to the cap, and the lever portion is provided so as to be rotatable with respect to the base portion via a hinge portion. It pushes down.

The auxiliary cover for the pump dispenser is provided with a detachable stopper for preventing the lever portion from rotating between the base portion and the lever portion. In addition, instead of this stopper, a cylindrical safety member with a rotation stopper that can be rotated between a position that restricts movement of the lever portion and an open position that does not restrict the lever portion has the same center as the central axis of the base portion. It is provided with an axis. The safety member is formed with a stopper holding portion for holding the rotation stopper at the open position.
JP 2004-122123 A

  The above-mentioned conventional dispenser is excellent in that it can prevent the liquid from being ejected from the nozzle by unintentionally pulling the trigger, and can prevent without the nozzle cap, and as a result, there is no risk of the nozzle cap being lost. However, the stopper is formed so as to be separable, and once it is separated, that is, opened, it does not act during use. Further, in the case of the rotation stopper, there is no such inconvenience, but there is a possibility that it is easily detached. That is, since the rotation stopper is fitted and locked between two parallel protrusions projecting on the lever (trigger), it is easily detached when an external force is applied to the lever. There is a fear.

  The present invention has been made in view of the above points, and can reliably prevent inadvertent liquid injection when not in use, and can perform liquid injection with a simple operation when in use. We propose an easy-to-use trigger-type liquid ejector that can easily show the released state.

  The liquid ejector of the present invention includes an aerosol container body, an ejection head, a casing, a trigger, and a stopper.

  The aerosol container body is a known jetting mechanism configured such that the stem projects so as to be able to be pushed down from the center of the upper surface, and the built-in discharge valve is opened by pushing the stem and the stored liquid is jetted from the stem by gas pressure. The one with is used. In addition, an aerosol container body in which an annular protrusion is erected at a predetermined position in the center of the upper surface can be preferably used in order to fit and lock the casing.

  The casing is formed of a synthetic resin or the like, is fitted to the aerosol container body and is erected above, and the cover part is integrally formed on the fitting base part that covers and fits the upper end part of the aerosol container body. Standing up, the spray head and trigger are operably stored inside the cover. In addition, as a locking form when fitted to the aerosol container body, a general locking form such as a cross over engagement between the protrusions or a screw engagement between the threads can be employed.

  The injection head is made of synthetic resin, etc., fitted into the stem of the aerosol container body with the introduction port at the lower end of the vertical cylinder so that it can be pushed down, and the injection port is opened at the front end of the horizontal cylinder projecting forward. In addition, a flow path from the introduction port to the injection port is provided inside. In addition, a downward engaging surface is provided on the outer periphery of the vertical cylinder. The engaging surface may be formed as the lower surface of the engaging rib protruding from the outer surface of the vertical cylinder, or may be formed as the lower surface of the downward stepped portion formed on the outer periphery of the vertical cylinder, and corresponds to the locking surface of the stopper that comes into contact. Various selections can be made.

  The trigger is formed of a synthetic resin or the like, and is provided so as to be swingable in the casing, and a tip portion is provided so as to be retractable forward of the casing, and the ejection head B is pushed down to eject the liquid by pulling the tip portion. It is mechanically linked to the jet head. Various connection with the ejection head can be adopted if the above requirements are satisfied.

  The stopper includes a locking surface that abuts and locks with the downward engaging surface provided in the vertical cylinder to prevent the ejection head from being pushed down, and the locking surface is in contact with the engaging surface. A substrate to be moved so as to deviate from the stop position is provided. The substrate can be operated from the outside of the casing. Therefore, a part of the stopper protrudes from a window hole provided in the casing so as to be operable to the outside. In addition to the locking mechanism based on the contact between the engaging surface and the locking surface, the stopper may be used in combination with a locking plate that is interposed at the lower end of the trigger to prevent the trigger from being pulled.

As a first means, an aerosol container body A in which a stem 5 is protruded so as to be able to be pushed in an upward biased state from the upper surface, a casing C standing on the aerosol container body A, and a vertical cylinder 10 is fitted on the stem 5 The injection head B is provided with an injection port 12 capable of injecting the liquid to the outside of the casing C, and is provided so as to be able to swing in the casing C and to be retracted forward of the casing. Is a trigger type liquid ejector provided with a trigger D for ejecting liquid by depressing the ejection head B by pulling the tip, and a downward engaging surface f ₁ projecting from the outer periphery of the vertical cylinder 10 Is provided with a locking surface f ₂ that prevents the ejection head B from being pushed down and can be moved outside the casing C to release the contact between the engaging surface f ₁ and the locking surface f _2. Set stopper E with substrate , The locking surface f ₂ is the engagement portion 52 the upper surface of the open circular which has removably fitted in the longitudinal tube 10 the outer peripheral lower end portion, the substrate is then extended from the engaging portion 52 outwardly The aerosol container body A is configured to be a substrate 50 that is slidably engaged from the center toward the outside.

As a second means, in the first means, the stopper is brought into contact with the lower surface of the trigger D while the engagement surface f ₁ and the locking surface f ₂ are in contact, and the trigger D is retracted. The locking plate 53 is provided so that the trigger D can be retracted by releasing the contact with the trigger D while the contact between the engagement surface f ₁ and the locking surface f ₂ is released.

As a third means, an aerosol container body A in which a stem 5 is protruded so as to be able to be pushed in an upward biased state from the upper surface, a casing C standing on the aerosol container body A, and a vertical cylinder 10 is fitted on the stem 5 The injection head B is provided with an injection port 12 capable of injecting the liquid to the outside of the casing C, and is provided so as to be able to swing in the casing C and to be retracted forward of the casing. Is a trigger type liquid ejector provided with a trigger D for ejecting liquid by depressing the ejection head B by pulling the tip, and a downward engaging surface f ₁ projecting from the outer periphery of the vertical cylinder 10 Is provided with a locking surface f ₂ that prevents the ejection head B from being pushed down and can be moved outside the casing C to release the contact between the engaging surface f ₁ and the locking surface f _2. Set stopper E with substrate , Said mating surface f ₁ is the lower surface of the engaging rib 13 projecting from the vertical tube 10 outer circumference, the locking surface f ₂ is, it causes rotatably fitted on the vertical tube 10 the outer peripheral lower end portion, It is the upper surface of the ring 60 in which the longitudinal grooves 65 extend radially from the central circular through hole 64, and the substrate extends outward from the ring 60 and is engaged with the aerosol container body A so as to be rotatable. and a rotating substrate 61, is rotated as to position engaging rib 13 in the vertical groove 65 upwardly and as configured to release the contact between the engaging surface f ₁ and the locking surface f _2, wherein the stopper , the engaging said at contact state of the mating surface f ₁ and the locking surface f ₂ trigger D, the lower surface in contact to prevent retraction of the trigger D, those of the engaging surface f ₁ and the engaging surface f ₂ A locking plate 53 is provided so that the trigger D can be pulled in by releasing the contact with the trigger D in the released state.

In the present invention, the stopper E is provided with a locking surface f ₂ that abuts a downward engaging surface f ₁ projecting from the outer periphery of the vertical cylinder 10 and prevents the ejection head B from being pushed down. Therefore, it is possible to reliably prevent the stem 5 from being pushed down, and to prevent inadvertent injection of the liquid. Further, when the liquid is ejected, if the substrate is moved outside the casing C in order to release the contact between the engagement surface and the locking surface, the contact between both is easily released. Since it is only necessary to move the substrate again so that the engaging surface f ₁ and the locking surface f ₂ come into contact with each other, the usability is very good.

The engaging portion 52 the upper surface of the open annular were capable fitted detachably to the vertical tube 10 the outer peripheral lower end portion and the locking surface f _2, over the aerosol container body A from the center to extend from the engagement portion 52 outwardly When the stopper E including the substrate 50 that is slidably engaged toward the outside is employed, a stable locked state can be maintained by fitting the open annular engagement portion 52 to the outer periphery of the vertical cylinder 10.

The lower surface of the engaging rib 13 projecting from the vertical tube 10 the outer periphery and engaging surface f _1, causes rotatably fitted on the vertical tube 10 the outer peripheral lower end portion, a longitudinal groove 65 radially from the center of the circular through hole 64 the upper surface of ring 60 that is extended by a locking surface f _2, includes a rotating substrate 61 on the aerosol container body a necessarily rotatably engaged with extending outwardly from the ring 60, longitudinal grooves 65 upward When the stopper E ₁ configured to release the contact between the engaging surface f ₁ and the engaging surface f ₂ by rotating the engaging rib 13 to be positioned on the ring 60 is used, the ring 60 is connected to the vertical cylinder 10. no possibility to deviate from, enabling the rotational position of the rotating substrate 61, the switching of easier locking and unlocking when brought into interlocking the contact position of the engagement surfaces f ₁ and the locking surface f _2.

Trigger D underside by contact between the engaging surface f ₁ and the locking surface f ₂ abuts to prevent retraction of the trigger D, in contact released state of the engagement surface f ₁ and the engaging surface f ₂ When a stopper having a locking plate 53 that allows the trigger D to be retracted by releasing the contact with the trigger D is used, the contact between the locking surface f ₂ and the locking surface f ₂ A double lock structure is provided for preventing the injection and preventing the injection by pulling in the trigger D, and the injection of the liquid can be prevented more reliably.

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

  1 to 4 show an example of an aerosol type liquid ejector of the present invention. The aerosol type liquid ejector 1 includes an aerosol container body A, an ejection head B, a casing C, a trigger D, and a stopper E. I have.

  The aerosol container body A has an annular projection 4 standing on the upper portion of the trunk portion 2 via the shoulder portion 3 and protrudes the stem 5 so that it can be pushed down from the center of the upper surface of the annular projection 4 in a biased state. A built-in discharge valve (not shown) is opened when the stem 5 is pushed in, and a known ejection mechanism configured to eject the stored liquid in the aerosol container body A from the stem 5 by gas pressure is provided. Further, a downward stepped portion 6 is provided around the lower portion of the outer periphery of the annular protrusion 4.

The ejection head B is made of synthetic resin and is fitted to the stem 5 to push down and eject the liquid. The proximal end of the ejection head B is formed at the upper portion of the vertical cylinder 10 in which the lower end introduction port is closely fitted. The horizontal cylinder 11 is opened to the side, the tip of the horizontal cylinder 11 is opened as an injection port 12, and the liquid from the stem 5 is injected from the injection port 12 through the vertical cylinder 10 and the horizontal cylinder 11. . Also, Tate設a plurality of engaging ribs 13 vertically tube 10, has a respective lower surface the engaging surface f _1. In addition, a pair of shafts 14 on which the trigger D is pivotally attached are provided at the upper end of the vertical cylinder 10.

The casing C is formed of a synthetic resin, and includes a fitting base C ₁ fitted to the aerosol container body A, and a cover C _{2 in} which the injection head B and the trigger D are operably accommodated. The front end of D is protruded so as to be retractable, and the ejection port 12 of the ejection head B faces the front end portion above the trigger D so as to be capable of ejection.

The fitting base C ₁ has a cylindrical fitting cylinder 20 fitted on the outer periphery of the annular protrusion 4 of the aerosol container body A suspended from the back surface of the top plate 21, and a skirt portion covering the shoulder portion 3 from the periphery of the top plate 21. 22 is extended, and a kerf 23 for slidably fitting the stopper E to the skirt portion 22 is provided. The engaging protrusion 24 that protrudes from the lower end of the inner periphery of the fitting cylinder 20 is forcibly engaged with the lower surface of the downward step portion 6 of the annular protrusion 4 to prevent it from coming out upward. Further, the vertical cylinder 10 of the ejection head B protrudes from a first window hole 25 provided in the center of the top plate 21 so as to be pushed down. A short cylinder 30 is erected from the periphery of the first window hole 25.

Cover C ₂ is erected integrally with the top plate 21 top surface of the fitting base portion C _1, formed to form the lower to the tubular, the upper long hollow box type in the longitudinal direction for communicating the inside and the tubular portion In addition, a second window hole 26 for operating the stopper E is provided on the front surface of the cylindrical portion, a third window hole 27 for allowing the injection port 12 to face the front end surface of the box-shaped portion, and a front lower surface of the box-shaped portion. Are respectively provided with fourth window holes 28 for allowing the tip of the trigger D to project in a swingable manner. The vertical cylinder 10 of the ejection head B is disposed so as to be able to be pushed down on the cylindrical part and the box-shaped part, and the horizontal cylinder 11 is disposed so as to be able to be pushed down on the front part of the box-shaped part. The hole 27 can be sprayed. A bearing 29 is provided at the rear of the box-shaped portion.

  In the trigger D, two side plates 40 are connected by a shaft 41 at the rear portion, and a front plate 42 is stretched between the side plates 40 at the front portion to form a finger-hanging portion and integrated. In addition, bearings 43 are respectively provided in the middle part in the front-rear direction on the inner surfaces of the side plates 40. An engaging recess 44 is provided on the rear surface of the front end portion of the front plate 42. Then, the shaft 41 of the trigger D is attached to the bearing 29 of the casing C, and the shafts 14 of the injection head B are attached to the bearings 43 of the trigger D so that the finger-hook portion at the front end portion from the fourth window hole 28 is attached. It is mounted so that it can be retracted.

Stopper E be those formed of a synthetic resin or the like, sliding the cut groove 23 which is Tate設from the skirt portion 22 of the fitting base portion C ₁ rear surface of the substrate 50 which slides on the skirt portion 22 of the fitting base portion C ₁ A pair of slidable engagement pieces 51 that are movably engaged are suspended, and an engagement portion 52 that is C-shaped in plan view is extended to the upper end portion of the substrate 50, and the upper surface thereof is a locking surface f. ₂ and so on. Further, a locking plate 53 for locking the trigger D is erected from the lower upper surface of the substrate 50.

When the stopper E is slid to the highest position, the engaging portion 52 engages with the outer periphery of the lower end portion of the vertical cylinder 10 with its lower surface placed on the cylinder 30, and the lower surface of the engaging rib 13 The engaging surface f ₁ contacts and locks the locking surface f ₂ on the upper surface of the engaging portion 52 to prevent the ejection head B from being pushed down. At that time, the front end portion of the locking plate 53 is fitted into the engagement recess 44 of the trigger D to prevent the trigger D from being pulled in at the same time.

When the aerosol type liquid ejector 1 is used, the engaging portion 52 is disengaged from the vertical cylinder 10 as shown in FIG. 2 by sliding the stopper E downward from the state shown in FIG. from the lower surface of the engaging surface f ₁ moves the locking surface f ₂ of the engaging portion 52 the upper surface depression of the ejection head B becomes possible. Next, when the trigger D is pulled, the stored liquid is ejected from the ejection port 12. After use, even if the stopper E is slid up again and returned to its original position, the ejection head B cannot be pushed down and the trigger D cannot be retracted.

5 and 6 show other examples. In this example, a stopper E ₁ having a different configuration as shown in FIG. 6 is provided in the example of FIG. That is, a knob 62 that also serves as a locking plate extends from a ring 60 attached to the lower end of the outer periphery of the vertical cylinder 10 via a rotating substrate 61. Rotating the substrate 61, the arc-shaped notch 23a bored in the top plate 21 of the fitting base portion C _1, and a Suridogakarigohen 63 vertically from the back slidably engaged with. The ring 60 is provided with four vertical grooves 65 radially spaced from a circular through hole 64 that is rotatably mounted on the vertical cylinder 10. At the edge of each longitudinal groove 65, a protrusion 66 for overcoming is provided on the front side edge in the clockwise direction, and the opposite side edge is an inclined surface 67.

Then, when the Suridogakarigohen 63 is located at one end of the arc-shaped notch 23a, the engaging rib 13 the lower surface of the engaging surface f ₁ projecting from the vertical tube 10 the outer circumference of the ring 60 top locking surface The ejecting head B is prevented from being pushed down by abutting and locking with f ₂ , and the leading end of the knob 62 is fitted into the engaging recess 44 of the trigger D to prevent the trigger D from being pulled in at the same time. When the sliding engagement piece 63 moves to the other end of the arcuate cut groove 23a, each engagement rib 13 moves above the vertical groove 65 provided in the ring 60, and the knob piece 62 moves to the trigger D. The ejecting head B can be pushed down by disengaging from the engaging recess 44. At this time, it is possible to know the state in which the engaging rib 13 can be pushed down by touching the protrusion 66 for preventing overcoming and the inclined surface 67. The other configuration is the same as that of the example of FIG.

Figure 7 further shows another example, in the present embodiment, an example in which the tab 62a is provided with a stopper E ₂ does not engage the trigger D In the example of FIG. 5, other configurations are the example of FIG. 5 Since these are the same, the same reference numerals are given and the description is omitted.

It is a longitudinal cross-sectional view of this invention ejector. Example 1 It is a longitudinal cross-sectional view of the stopper of the present invention ejector. Example 1 It is a perspective view of the ejection head in the present invention ejector. Example 1 It is a perspective view of a stopper in the present invention ejector. Example 1 It is a longitudinal cross-sectional view of this invention ejector. (Example 2) It is a perspective view of the stopper of this invention ejector. (Example 2) It is a longitudinal cross-sectional view of this invention ejector. (Example 3)

Explanation of symbols

A ... Aerosol container body, 5 ... Stem,
B ... jetting head, 10 ... vertical cylinder, 12 ... jetting port, 13 ... engagement rib,
C ... casing D ... trigger, f ₁ ... engaging surface E ... stopper, 50 ... substrate, 52 ... engaging portion, 53 ... locking plates, f ₂ ... locking surface
E ₁ ... stopper, 60 ... ring, 61 ... rotating substrate, 64 ... circular through hole, 65 ... longitudinal groove,

Claims (3)

An aerosol container body ( A ) having a stem ( 5 ) protruding so as to be able to be pushed in an upward biased state from the upper surface, a casing ( C ) standing on the aerosol container body ( A ) , and a vertical cylinder on the stem ( 5 ) with (10) fitted to be depressible providing a casing (C) ejecting head having a jet capable injection port of the liquid outward (12) (B), rocking in a casing (C) A trigger-type liquid ejector provided with a trigger ( D ) that is provided so as to be movable, has a tip projecting so as to be retractable forward of the casing, and pushes down the ejection head ( B ) by ejecting the tip. there are vertical cylinder (10) provided with a locking surface (f ₂₎ to the projecting the downward engagement surfaces (f ₁₎ in contact to prevent depression of the ejection head (B) on the outer peripheral engagement surface This of (f ₁₎ and the locking surface (f ₂₎ A stopper (E) movement operation in the casing (C) external in order to release it with a substrate capable of providing, the locking surface (f _2), detachably to the longitudinal tube (10) outer peripheral lower end portion It is the upper surface of the engaging part (52) of the open ring to which it was fitted, and the substrate extends outward from the engaging part (52) so as to face outward from the center on the aerosol container body (A). A trigger type liquid ejector characterized by being a slidably engaged substrate (50) . The stopper is provided on the engagement surface (f ₁ ) And the locking surface (f ₂ ) In contact with the lower surface of the trigger (D) to prevent the trigger (D) from being pulled in, and the engagement surface (f ₁ ) And locking surface (f ₂ 2. A trigger type liquid according to claim 1, further comprising a locking plate (53) capable of releasing the contact with the trigger (D) in a state in which the contact with the trigger (D) is released in a state where the contact with the trigger (D) is released. Ejector. An aerosol container body (A) having a stem (5) protruding so as to be able to be pushed in an upward biased state from the upper surface, a casing (C) standing on the aerosol container body (A), and a vertical cylinder on the stem (5) (10) is provided so that it can be pushed down and the casing (C) is provided with an injection head (B) having an injection port (12) capable of injecting liquid outward, and the casing (C) is swung. A trigger type liquid ejector provided with a trigger (D) which is provided so as to be movable, has a tip projecting so as to be retractable forward of the casing, and pushes down the ejection head (B) by ejecting the tip to eject liquid. there are vertical cylinder (10) provided with a locking surface (f ₂₎ to the projecting the downward engagement surfaces (f ₁₎ in contact to prevent depression of the ejection head (B) on the outer peripheral engagement surface ( Case) to release the contact between (f ₁ ) and the locking surface (f ₂ ) Grayed (C) moving operation of the external providing a stopper (E) provided with a substrate capable of, said mating surface (f ₁₎ it is said vertical tube (10) projecting from the outer periphery to the engaging rib (13) The locking surface ( f ₂ ) is rotatably fitted to the lower end of the outer periphery of the vertical cylinder ( 10 ) and the vertical grooves ( 65 ) extend radially from the central circular through hole ( 64 ). A rotating substrate ( 61 ) which is an upper surface of the ring ( 60 ) provided, and the substrate extends outward from the ring ( 60 ) and is rotatably engaged on the aerosol container body ( A ). And configured to release the contact between the engaging surface ( f ₁ ) and the locking surface ( f ₂ ) by rotating the engaging rib ( 13 ) so as to be positioned above the longitudinal groove ( 65 ) , A stopper contacts the lower surface of the trigger (D) in a contact state between the engagement surface (f ₁ ) and the locking surface (f ₂ ) to prevent the trigger (D) from being pulled in and engaged. A locking plate (53) that allows the trigger (D) to be retracted by releasing the contact with the trigger (D) when the contact between the surface (f ₁ ) and the locking surface (f ₂ ) is released. A trigger type liquid ejector characterized by comprising.

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