JP5575687B2 - Trigger type ejector - Google Patents

Description

  The present invention relates to a trigger type ejector, and is intended to facilitate an assembling operation of members constituting the ejector.

  In containers containing contents such as wrinkle removers, detergents, clothing glue, residential wax, hair conditioners, fragrances, etc., the pump attached to the mouth of the container is driven by checking the lever. In addition, a trigger-type ejector that injects the contents in the container toward the outside is frequently used, thereby enabling efficient supply of the contents.

  Such a trigger type ejector is rotatably held by a base (a mounting cylinder member in Patent Document 1) that is detachably fixed to a mouth portion of a container for storing contents, as described in Patent Document 1, for example. And a pump including an annular piston that slides in the cylinder is configured to be suspended in the mouth of the container by the base. The body is moved up and down to drive the pump and the inside (the vertically moving member in Patent Document 1) serving as a feeding path for the contents sucked, pressurized and pumped by the pump is disposed, and the tip of the body Is generally inserted into a window hole provided in the lever (a space between the finger-hanging portion and the connecting plate portion in Patent Document 1) and the injection nozzle is integrally connected to the tip portion thereof.

Japanese Patent Laid-Open No. 2004-60617

  By the way, in order to displace the body up and down by the rotational displacement of the lever to be checked, normally, a pressing projection is provided on the inner surface of the lever, and the pressed projection is provided on the outer wall of the body below the pressing projection. And the pressing protrusion pushes down the pressed protrusion by the check of the lever. On the other hand, the injection nozzle usually incorporates a discharge valve that sucks, pressurizes, and pumps the contents in cooperation with a suction valve provided in the pump. Unavoidable. For this reason, the width of the injection nozzle is usually larger than the width of the window hole.

  In assembling the trigger type ejector configured as described above, first, the rear end portion of the body is inserted from the surface side of the lever (see FIG. 6A), and then the pressed protrusion of the body is moved to the lever. The body is relatively moved so as to pass through the pressing protrusion (see FIG. 6B), and the pressed protrusion is positioned below the pressing protrusion. Next, it is necessary to place the rear end of the body on the annular piston while maintaining the relative position between the two and to engage the lever with the pivot provided on the base (see FIG. 6C). . For this reason, the positioning of the body and lever is cumbersome, and when attaching them to the base, etc., it is necessary to carry out unstable work that keeps both of them from moving. There was still room for improvement.

  An object of the present invention relates to a trigger type ejector that injects contents in a container by checking a lever, and proposes a novel trigger type ejector that facilitates assembly work of members constituting the ejector. is there.

The present invention includes a base that is detachably fixed to the mouth of a container, a lever that is rotatably held via a pivot provided on the base, and is suspended in the mouth of the container via the base. A pump that sucks, pressurizes, and pumps the contents in the container by checking the lever, a body that has a feeding path that allows the contents sucked, pressurized, and pumped by the pump to pass therethrough, and is provided in the lever. A trigger-type ejector provided with an ejection nozzle that projects from the window hole and is connected to the tip of the body and injects the contents that have passed through the feeding path toward the outside,
The lever has a pair of side walls that are opposed to each other, and a front wall that is spanned between the side walls and serves as an operation portion of the lever.
A trigger type ejector characterized in that the front wall is provided with a slit that is connected to the window hole and elastically displaces the side wall toward the outside in the width direction when the injection nozzle is attached, and allows the injection nozzle to be inserted therethrough. It is.

  The front wall preferably includes a lid that is hinged to the front wall and closes the slit.

  The side wall has an engagement portion on an inner surface thereof, and the lid body is engaged with an edge portion facing the hinge-connected edge portion to hold the lid body in cooperation with the engagement portion. It is desirable to provide a section.

  The pivot is formed on a pair of support walls that stand from the top wall of the base and are spaced apart from each other, and the body is rotated toward the gap formed between the support walls. It is desirable to provide a stop.

  The lever that drives the pump by the checker is composed of a pair of opposing side walls and a front wall that spans between the side walls, and the side wall faces outward in the width direction when installing the injection nozzle on the front wall. Since the slit for elastically displacing the injection nozzle is provided, the injection nozzle can be inserted from the back side of the lever toward the front side under the elastic displacement of the side wall of the lever. This eliminates the need for aligning the pressed protrusions of the body so that the pressed protrusions of the body pass through the pressing protrusions of the lever, thus facilitating the assembly operation.

  In the case where a lid body that is hingedly connected to the front wall is provided and the slit is closed with this lid body, the slit does not remain open, so that the appearance is not impaired.

  When an engaging portion is formed on the inner side surface of the side wall and the engaged portion is provided on the lid body so as to be linked to the engaging portion, the slit is not formed even if the pressing force accompanying the check of the lever is applied to the lid body. It does not open easily.

  The pivot is formed on a pair of support walls that stand from the top wall of the base and are spaced apart from each other, and the body is provided with a rotation stopper that extends toward the gap formed between the support walls. In this case, since the positions of the body and the base are determined by mounting the body on the pump, it is not necessary to hold the body so as not to move when the lever is attached, and the assembly work is further facilitated.

It is a side view which shows embodiment of the trigger type ejector according to this invention in a cross section. 1A is a plan view and FIG. 1B is a front view of the trigger type ejector shown in FIG. About the lever of the trigger type ejector according to the present invention, (a) is a front view and (b) is a sectional view in side view. It is a figure explaining the assembly | attachment of the lever of the trigger type ejector according to this invention, (a) is a front view, (b) is sectional drawing in a side view. It is sectional drawing in the side view about the lever which concerns on other embodiment of the trigger type ejector according to this invention. It is sectional drawing in the side view explaining the assembly | attachment of the body and lever in the conventional trigger type ejector, Comprising: (a) shows the attitude | position which inserts the rear-end part of a body from the surface side of a lever, (b ) Shows a posture in which the body is relatively moved so that the pressed protrusion of the body passes through the pressed protrusion of the lever, and (c) shows the body and the lever in a state where the pressed protrusion is positioned below the pressed protrusion. The posture to assemble is shown.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a side view showing a cross section of an embodiment of a trigger type ejector according to the present invention. FIG. 2 is a plan view of the trigger type ejector shown in FIG. ) Is a front view, FIG. 3 is a front view of the lever of the trigger type ejector according to the present invention, (b) is a sectional view in side view, and FIG. It is a figure explaining the assembly | attachment of the lever of the trigger type ejector according to this invention, (a) is a front view, (b) is sectional drawing in side view, FIG. 5 is the trigger type according to this invention. FIG. 6 is a cross-sectional view in a side view of a lever according to another embodiment of the ejector, and FIG. 6 is a cross-sectional view in a side view for explaining assembly of a body and a lever in a conventional trigger type ejector. (A) shows the posture of inserting the rear end of the body from the surface side of the lever, ) Shows a posture in which the body is relatively moved so that the pressed protrusion of the body passes through the pressed protrusion of the lever, and (c) shows the body and the lever in a state where the pressed protrusion is positioned below the pressed protrusion. The posture to assemble is shown.
In this embodiment, with respect to the direction along the arrow X shown in FIG. 1, the + side is the front, the opposite side is the rear, the + side is the upper side, and the opposite side is the lower side with respect to the direction along the arrow Y. And The direction along the arrow Z shown in FIGS. 2A and 2B is the width direction.

  In FIG. 1, 1 is a container to which a trigger type ejector according to the present invention is attached. The container 1 has a mouth portion 1a having an upper opening, and has an internal space for storing contents inside thereof. Moreover, the thread part 1b is provided in the outer surface wall of the opening part 1a.

  Reference numeral 2 denotes a base that is detachably fixed to the mouth 1 a of the container 1. The base 2 has a circular top wall 2a that covers the top of the mouth 1a of the container 1, a cylinder 2b that hangs down from the outer periphery of the top wall 2a and surrounds the outer periphery of the mouth 1a of the container 1, and an inner side of the cylinder 2b. And has a screw portion 2c that is screwed to the mouth portion 1a of the container 1. In the illustrated example, the base 2 is engaged with the mouth 1a of the container 1 with a screw, but may be engaged by undercutting.

  The base 2 rises from the opening edge of the central portion formed in the top wall 2a and rises while gradually reducing the diameter from the upper cylinder 2d having a smaller diameter than the cylinder 2b, and the upper part of the upper cylinder 2d, A guide cylinder 2e having a through opening communicating with the upper cylinder 2d at the upper end is provided.

  Furthermore, the base 2 rises from the top wall 2a behind the upper cylindrical body 2d, and couples the support walls 2f that are opposed to each other with a gap therebetween in the width direction, and the support walls 2f behind the support wall 2f. And a rear wall 2g. Further, on each support wall 2f, a pivot 2h for rotatably holding a lever to be described later protrudes outward in the width direction.

  Reference numeral 3 denotes a pump that is suspended in the mouth 1 a of the container 1 through the base 2. The pump 3 has an open upper end and an upper portion fitted inside the upper cylindrical body 2d, a flange f at the middle portion, and a cylindrical cylinder 3a having a lower end opening as a suction port for contents, and the cylinder 3a. A piston 3b that is slidably disposed on the inside of the container 1 and sucks, pressurizes, and pumps the contents in the internal space of the container 1 by reciprocating movement thereof, and a spring 3c that elastically supports the piston 3b upward. It consists of a poppet 3d that is arranged in the cylinder 3a and guides the piston 3b, and a suction valve 3e that is arranged in the suction port of the cylinder 3a and prevents the backflow of contents related to suction. A suction pipe S for sucking the contents is attached to the lower end opening of the cylinder 3a. In the posture in which the pump 3 is suspended in the mouth 1a of the container 1 via the base 2, a packing Pa is disposed between the flange f and the mouth 1a of the container 1, and the flange f and the top wall Since the packing Pb is arranged between 2a, the internal space of the container 1 can be sealed.

  4 is a body having a feed path R through which the contents sucked, pressurized and pumped by the pump are passed. The body 4 has a lower end portion in contact with the piston 3b, a stem 4a having a vertical path Ra inside thereof, and an integral connection with the upper end portion of the stem 4a, and an inclined posture in which the body 4 is inclined upward toward the front. And an inclined cylindrical body 4b held by the An inclined path Rb that is formed along the longitudinal direction of the inclined cylinder 4b and is integrally connected to the vertical path Ra is provided inside the inclined cylinder 4b. A nozzle body 4d with a flange 4c is provided integrally with the inclined cylinder 4b in front of the inclined cylinder 4b. In addition, a large-diameter path Rc that is integrally connected to the inclined path Rb and has a larger diameter than the inclined path Rb is formed inside the nozzle body 4d. On the upper part of the body 4, circular pressed protrusions 4 e that protrude outward in the width direction are formed. Further, the body 4 has a rotation stop that extends rearward from the coupling portion between the stem 4a and the inclined cylindrical body 4b, bends in front of the pivot 2h, and has its lower end inserted into the gap between the pair of support walls 2f. The part 4f may be provided.

  Reference numeral 5 denotes a discharge valve that is disposed in the large-diameter path Rc and functions as a valve body that contributes to the ejection of contents by cooperation with the suction valve 3e. The discharge valve 5 has an annular elastic portion 5a at the center thereof, and the base plate 5b is integrally connected to the front side with the elastic portion 5a interposed therebetween, and the valve plate 5c is integrally connected to the rear side. The base plate 5b includes a plurality of grooves 5d along the axial direction of the large-diameter path Rc on the outer peripheral surface thereof. Further, the valve plate 5c includes a packing Pc on a surface facing the flange 4c, and includes a shaft portion 5e extending from the valve plate 5c along the inclined path Rb.

  6 is arranged in the inclined path Rb, one end of which is fitted into the shaft part 5e and connected to the discharge valve 5, and the other end is extended to the connecting part between the vertical path Ra and the inclined path Rb. It is a rod-shaped member provided. A gap for allowing the contents to pass therethrough is provided between the outer surface wall of the rod-shaped member 6 and the inner surface of the inclined path Rb.

  A cap 7 is connected to the nozzle body 4d by screw engagement (or may be undercut engagement) to form the injection nozzle N. In the illustrated example, the injection nozzle N refers to a portion related to the body 4 and the cap 7 located in front of the flange 4c. In addition, an injection hole 7a for injecting the contents toward the outside is provided at the center of the front side of the cap 7, and an inclined wall 7b that expands toward the front side from the injection hole 7a is formed. Has been.

  A lever 8 drives the pump 3 by checking. As shown in detail in FIGS. 3A and 3B, the lever 8 includes a pair of side walls 8 a that are opposed to each other at an interval in the width direction, and a portion of the side wall 8 a that extends from the rear to the upper side of the lever 8. There is provided a top wall 8b that connects each other and covers most of the body 4, and a front wall 8c that is provided on the front side of the lever 8 and spans from one side wall 8a to the other side wall 8a. The top wall 8b includes a reinforcing wall 8d that extends downward from the middle portion thereof and connects the side walls 8a to increase the rigidity of the lever 8. Further, between the top wall 8b and the front wall 8c, there is a window hole 8e through which the inclined cylindrical body 4b of the body 4 is inserted to project the injection nozzle N provided at the tip thereof. Further, the front wall 8c is formed with a slit 8f that is connected to the window hole 8e and penetrates the front wall 8c on the front and back. Thereby, each of the side walls 8a can be elastically displaced outward in the width direction. In the illustrated example, the width of the slit 8f is the same as that of the window hole 8e, but may be narrower than the opening width of the window hole 8e. Then, a thicker portion is provided in the middle portion of the side wall 8a toward the inner side in the width direction to form a step with the side wall 8a, and the pressed protrusion 4e of the body 4 is engaged with the lower portion of the step. A concave pressing projection 8g is provided. Further, a thick portion is provided inwardly in the width direction with the groove 8h remaining behind the side wall 8a, and a shaft that is pivotally supported by the pivot 2h of the base 2 and rotatably holds the lever 8 in the groove 8h. Hole 8i is provided. As a result, when the lever 8 is attached to the base 2, it can be inserted into the shaft hole 8i while guiding the pivot shaft 2h by the groove 8h, so that special positioning of both is unnecessary, and the assembly work can be performed efficiently. It becomes.

  The trigger type ejector configured as described above, when the body 4 and the lever 8 are assembled, elastically displaces the pair of side walls 8a of the lever 8 outward in the width direction as shown in FIG. Then, under the elastic displacement, as shown in FIG. 4B, the injection nozzle N located at the tip of the body 4 is directed from the back surface side of the window hole 8e or the slit 8f to the front surface side (from the rear to the front). Insert. This eliminates the need to relatively move the body 4 so that the pressed protrusion 4e of the body 4 passes through the pressing protrusion 8g of the lever 8, thereby facilitating the assembly operation. It is possible to combine the body 4 and the lever 8 in this way and attach them to the pump 3 and the base 2, but as shown in FIGS. 4 (a) and 4 (b), the pump 3 If the body 4 is attached to the lever 8 and then the lever 8 which is elastically displaced is attached thereafter, it is not necessary to maintain the alignment state of the body 4 and the lever 8, so that the assembly work becomes easier. .

  Further, as shown in FIG. 5, when a lid body 8j connected to the front wall 8c via the hinge h is provided and the slit body 8j is configured to close the slit 8f, the slit 8f remains open. The appearance will not be lost.

  Further, as shown in FIG. 5, engaging portions 8k project from the inner surface of each side wall 8a inward in the width direction, and the lid 8j has a width at the edge facing the edge connected to the hinge h. When the engaged portions 8m that engage with the respective engaging portions 8k are provided on both outer sides in the direction, the closed posture of the lid body 8j is maintained, so that the pressing force associated with the check of the lever 8 is applied to the lid body 8j. Even if added, the slit 8f does not open carelessly.

  When the anti-rotation portion 4f described above is provided on the body 4, the body 4 with respect to the base 2 and thus the injection nozzle N are held without rotating, so the body 4 is held so as not to move when the lever 8 is attached. This eliminates the need for the assembly work, and makes the assembly work easier.

  ADVANTAGE OF THE INVENTION According to this invention, the trigger type ejector which can perform the operation | work which assembles a member more simply can be provided.

1 container 1a mouth 2 base 2a top wall 2b cylinder 2f support wall 2h pivot 3 pump 3a cylinder 3b piston 4 body 4a stem 4b inclined cylinder 4c flange 4d nozzle body 4e pressed projection 4f rotation stop 5 rod discharge valve 6 rod Member 7 Cap 8 Lever 8a Side wall 8b Top wall 8c Front wall 8d Reinforcement wall 8e Window hole 8f Slit 8g Pressing protrusion 8h Groove 8i Shaft hole 8j Lid 8k Engagement part 8m Engagement part R Feeding path N Injection nozzle h Hinge

Claims (4)

A base that is detachably fixed to the mouth of the container, a lever that is rotatably held via a pivot provided on the base, and a lever that is suspended in the mouth of the container via the base. From a pump that sucks, pressurizes, and pumps the contents in the container with a scissors, a body that has a feeding path through which the contents sucked, pressurized, and pumped by the pump pass, and a window hole provided in the lever A trigger type ejector provided with a projecting nozzle, and an ejection nozzle that injects the contents that have passed through the feeding path connected to the tip of the body toward the outside;
The lever has a pair of side walls that are opposed to each other, and a front wall that is spanned between the side walls and serves as an operation portion of the lever.
A trigger type ejector characterized in that the front wall is provided with a slit that is connected to the window hole and elastically displaces the side wall toward the outside in the width direction when the injection nozzle is attached, and allows the injection nozzle to be inserted therethrough. .   The trigger type ejector according to claim 1, wherein the front wall includes a lid that is hinged to the front wall and closes the slit.   The side wall has an engagement portion on an inner surface thereof, and the lid body is engaged with an edge portion facing the hinge-connected edge portion to hold the lid body in cooperation with the engagement portion. The trigger type ejector of Claim 2 provided with a part.   The pivot is formed on a pair of support walls that stand from the top wall of the base and are spaced apart from each other, and the body is rotated toward the gap formed between the support walls. The trigger type ejector in any one of Claims 1-3 which provided the stop part.

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