JP5550597B2 - Trigger type ejector - Google Patents

Description

  [Technical Field] The present invention relates to a trigger type ejector, and by assembling each member constituting the ejector to some extent to form an assembly in which these parts are combined into one, an efficient assembling operation will be realized. It is what.

  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, for example, as described in Patent Document 1, a base having a ring piston that slides in a cylinder and is detachably fixed to a mouth of a container (in Patent Document 1, a mounting cylinder member) ) In the mouth of the container through the nozzle), and the injection nozzle integrally connected to the tip of the annular piston is used as the feed path for the contents that are sucked, pressurized and pumped by the pump. A body (up and down motion member in Patent Document 1) to be ejected from the base is arranged, and a lever (trigger in Patent Document 1) that is rotatably supported is provided on the pivot formed on the base, and the body is moved up and down by checking the lever. A configuration in which the pump is driven by moving is common.

Japanese Patent Laid-Open No. 2004-60617

  By the way, in the trigger type ejector as described above, it is constituted by a relatively large number of members, and it may be inefficient to assemble each member from one place to the last. . For this reason, in order to increase the efficiency of the assembly work and diversify the production system, it is strongly required to assemble the members to some extent and configure an assembly in which these parts are combined (modularization). However, in the conventional trigger type ejector, for example, if it is turned upside down with no lever attached, the body will be detached from the pump, and this request has not been fully met yet. Was the current situation.

  An object of the present invention relates to a trigger type ejector that injects the contents in a container by a check of a lever, and by realizing modularization of members constituting the ejector, a novel assembly operation has been realized. A trigger-type ejector is proposed.

The present invention includes a base that is detachably fixed to the mouth of a container, a lever that is rotatably held by a pivot provided on the base, and is suspended and held in the mouth of the container via the base. A pump that sucks, pressurizes, and pumps the contents in the container, and drives the pump by moving the lever up and down to move the contents sucked, pressurized, and pumped by the pump inside. A body having a feeding path to be passed through, and an injection nozzle provided to project from a window hole provided in the lever, and injecting the contents passing through the feeding path by being connected to the tip of the body toward the outside A trigger-type ejector comprising:
The pivot is provided on a pair of support walls that stand from the top wall of the base and are spaced apart from each other, and forms a recess extending along the moving direction of the body on at least one of the support walls;
The trigger type ejector according to claim 1, wherein a claw portion is provided in the body so as to enter the gap of the support wall and engage with the recess to hold the body against the support wall.

  It is desirable that the concave portions are provided on both of the support walls, and the claw portions are a pair of outward elastic claws that engage with each of the concave portions.

  It has a lever that is pivotally held on a pivot provided on the base, and has a body that moves up and down by the check of this lever to drive the pump. The pivot stands from the top wall of the base and has a gap. A recess that extends along the direction of movement of the body is formed in at least one of the support walls, and enters the clearance between the support walls and engages with the recess. Since the nail | claw part which hold | maintains a body to a support wall is provided, even if a body is previously attached to a pump, a body will not remove | deviate, and modularization of a body can be achieved.

  When the recesses are provided on both support walls and the pawls are a pair of outward elastic claws that engage with each of the recesses, for example, when transporting a modular pump incorporating a body, an unexpected external force Even if this works, the body can be reliably held by the action of the two elastic claws.

(A) is sectional drawing in side view about the ejector except the lever which concerns on embodiment of the trigger type ejector according to this invention, (b) is an expanded section which meets AA shown to (a) FIG. About the lever which concerns on embodiment of the trigger type ejector according to this invention, (a) is a side view, (b) is a top view. It is a side view which shows the state in the middle of attaching the lever shown in FIG. 2 to the base of the ejector shown in FIG. It is a side view which shows the state which rotated the lever from the state shown in FIG. 3, and was attached to the base. The other embodiment of the trigger type ejector according to this invention is shown, (a) is a front view, (b) is sectional drawing in a side view. (A) is a side view about the lever which concerns on other embodiment of the trigger type ejector according to this invention, (b) is an arrow line view which follows the arrow shown by (a). The lever shown in FIG. 6 is attached to the ejector shown in FIG. 1, (a) is a side view of the ejector in the parallel posture of the lever, and (b) is a side view of the ejector in which the lever is in the serial posture. .

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1A is a cross-sectional view in side view, and FIG. 1B is a cross-sectional view taken along line AA in FIG. 1A, excluding the lever according to the embodiment of the trigger type ejector according to the present invention. 2 is an enlarged cross-sectional view taken along a line A, and FIG. 2 is a side view of the lever according to the embodiment of the trigger type ejector according to the present invention, and FIG. FIG. 4 is a side view showing a state where the lever shown in FIG. 2 is being attached to the base of the ejector shown in FIG. 1, and FIG. 4 is a state where the lever is attached to the base by rotating from the state shown in FIG. FIG. 5 is a side view showing another embodiment of the trigger type ejector according to the present invention, (a) is a front view, (b) is a side view, and FIG. (A) is a side view of a lever according to still another embodiment of the trigger type ejector according to the present invention. (B) is an arrow view along the arrow shown in (a), FIG. 7 is the lever shown in FIG. 6 attached to the jet shown in FIG. 1, and (a) is the jet in the parallel posture of the lever It is a side view of a container, (b) is a side view of the ejector which made the lever into the serial attitude | position.
In this embodiment, with respect to the direction along the arrow X shown in FIGS. 1A and 1B, the side facing the arrow is the front, the opposite side is the rear, and the direction along the arrow Y is the arrow. The side facing is the upper side, and the opposite side is the lower side. The direction along the arrow Z is the width direction.

  In FIG. 1 (a), 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. At least one of the support walls 2f is formed with a recess extending on the inner side surface along the direction in which the body described later moves up and down. Here, the recess is concave from the inner surface of the support wall 2f toward the outer side in the width direction, but may be a through hole 2i that penetrates the front and back of the support wall 2f as shown.

  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.

  Reference numeral 4 denotes a body having a feeding path R through which the contents sucked, pressurized and pumped by the pump 3 pass. 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.

Furthermore, the body 4 has a connecting portion 4f that extends rearward from a joint portion between the stem 4a and the inclined cylindrical body 4b and bends downward in front of the pivot 2h. A claw portion 4g is provided which enters into the gap between the walls 2f and engages with the above-described recess (through hole 2i in the illustrated example). As a result, the body 4 is held in a state in which it cannot rotate with respect to the support wall 2f and is prevented from coming off. Incidentally, as shown in FIG. 1 (b), a recess (through hole 2i) provided on both the support wall 2f, and a slit 4g ₁ to claw portion 4g when the pair of outward elastic claw 4g ₂ since the engagement in a recess (through hole 2i) while the deflection elastic claw 4g ₂ during mounting of the body 4, on which can be set with a small force, two action of the resilient pawls 4g ₂ of facing opposite directions Underneath, the body 4 can be securely held.

  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.

  And in the place shown to Fig.2 (a), (b), 8 is a lever which drives the pump 3 by check. The lever 8 has a pair of side walls 8a that are opposed to each other at an interval in the width direction, and a ceiling wall that covers the most part of the body 4 by connecting the side walls 8a to each other at a portion extending from the rear to the upper side of the lever 8. 8b and a front wall 8c provided on the front side of the lever 8 and spanning 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, a thickened 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 8f is provided. Further, a thick portion is provided inwardly in the width direction with the groove 8g 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 8g. Hole 8h is provided. As a result, when the lever 8 is attached to the base 2, it can be inserted into the shaft hole 8h while guiding the pivot shaft 2h by the groove portion 8g, so that special positioning of both is unnecessary, and the assembly work can be performed efficiently. It becomes. Here, on one side wall 8a, a notch 8i is provided to open the outer edge of the window hole 8e in the width direction. Further, since the reinforcing rib 8j that is thicker toward the inner side in the width direction is provided on the other side wall 8a, the rigidity of the lever 8 that is lowered by forming the notch portion 8i can be compensated.

  In the trigger type ejector configured as described above, when the lever 8 is attached to the base 2, as shown in FIG. 1, the body 4 is inserted into the guide cylinder 2 e in advance and placed on the piston 3 b of the pump 3. As a result, the claw portion 4g of the body 4 engages with the concave portion (through hole 2i) of the base 2, so that the body 4 is held in a state in which it cannot rotate with respect to the support wall 2f and is prevented from coming off. Next, as shown in FIG. 3, the lever 8 is moved in the width direction in an inverted posture with the front wall 8c facing downward, and the tip of the body 4 is inserted through the notch 8i to the window hole 8e. Further, as shown in FIG. 4, the lever 8 can be put into a posture at the time of use (a posture that can be checked) by inserting the shaft hole 8 h into the pivot 2 h and shifting to the horizontal posture while rotating the lever 8. . By attaching the lever 8 to the body 4 assembled in advance in this manner, conventionally, the pressed protrusion 4e of the body 4 and the pressing protrusion 8f of the lever 8 are held in the aligned state, and they are guided. Assembling work of the ejector, which was required to be attached to the cylinder 2e and the pivot 2h at the same time, can be performed more easily.

  Here, the lever 8 is not limited to the one provided with the above-described notch portion 8i. For example, a pair of levers 80 that are opposed to each other at an interval in the width direction, such as the lever 80 shown in FIGS. Side wall 80a, a top wall 80b in which the side walls 80a are connected to each other in a portion extending from the rear side to the upper side of the lever 80, and provided on the front side of the lever 80 and spanned from one side wall 80a to the other side wall 80a. And a slit 80e provided in the front wall 80c is connected to a window hole 80d provided between the top wall 80b and the front wall 80c to elastically displace each of the side walls 80a outward in the width direction. In this way, the injection nozzle N may be inserted through the window hole 80d.

Further, instead of the lever 8, a lever body 81 a with a notch opening 81 a ₁ and a part where a finger is hooked when checking the lever 8, as a lever 81 shown in FIGS. What connected the operation part 81b via the hinge h may be used. When attaching the lever 81, it is attached to the base 2 as shown in FIG. 7A in a parallel posture in which the lever main body 81a and the operation portion 81b are arranged side by side as shown in FIG. 6B. Here, the lever body 81a, since the front by notch opening 81a ₁ is opened, the distal end portion of the body 4 does not become a hindrance when installing. Thereafter, the operation portion 81b is bent in the direction of the arrow shown in FIG. 7A, so that the lever main body 81a and the operation portion 81b shown in FIG. This allows the claw portion 81b ₁ of the operation portion 81b is engaged with the engaging hole 81a ₂ of the lever body 81a, to the attitude at the time of using the lever 81 (牽曳can posture).

  According to the present invention, since the body does not come off even if the body is attached to the pump, the body can be modularized, and a trigger type ejector capable of performing an efficient assembly operation can be provided. .

DESCRIPTION OF SYMBOLS 1 Container 1a Mouth part 2 Base 2a Top surface wall 2b Cylindrical body 2f Support wall 2h Axis 2i Through-hole (recessed part)
DESCRIPTION OF SYMBOLS 3 Pump 3a Cylinder 3b Piston 4 Body 4a Stem 4b Inclined cylinder 4c Flange 4d Nozzle main body 4e Pressed protrusion 4f Connection part 4g Claw part 4g ₁ Slit 4g ₂ Elastic claw 5 Discharge valve 6 Rod-like member 7 Cap 8 Lever 8a Side wall 8a Wall 8c Front wall 8d Reinforcing wall 8e Window hole 8f Pressing protrusion 8g Groove 8h Shaft hole 8i Notch 8j Reinforcing rib R Feeding path N Injection nozzle

Claims (2)

A base that is detachably fixed to the mouth of the container, a lever that is rotatably held by a pivot provided on the base, and is suspended and held in the mouth of the container via the base. A pump that sucks, pressurizes, and pumps the contents, and a pump that drives the pump by moving the lever up and down and passes the contents sucked, pressurized, and pumped by the pump inside A trigger provided with a body having a path, and an injection nozzle that protrudes from a window hole provided in the lever, and that is connected to the tip of the body and injects the contents that have passed through the feeding path toward the outside. A type jet,
The pivot is provided on a pair of support walls that stand from the top wall of the base and are spaced apart from each other, and forms a recess extending along the moving direction of the body on at least one of the support walls;
2. A trigger-type ejector according to claim 1, wherein a claw portion is provided on the body so as to enter the gap of the support wall and engage with the recess to hold the body against the support wall.   The trigger type ejector according to claim 1, wherein the concave portion is provided on both of the support walls, and the claw portion is a pair of outward elastic claws engaged with the concave portion.

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