JP2015164858A - Trigger type liquid jetting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trigger type liquid jetting device which holds an attachment cap to a proper position when a body part is held in an inverted posture thereby improving the workability and the productivity in the assembly process.SOLUTION: A trigger type liquid jetting device 1 of the invention has an attachment cap 2 attached to a mouth part of a container C and repetitively tows an operation lever 6 to drive a pump provided at a body part 3 and suction, pressurize, and pump a content liquid in the container C to jet the content liquid. The attachment cap 2 includes: a top wall 2d having an opening 2c into which a connection cylindrical part 10a provided below the body part 3 is inserted, the top wall 2d held by a flange 10b extending from an outer peripheral surface of the connection cylindrical part 10a to the radial outer side so as not to be removed; and a cylindrical side wall 6b suspending from an outer edge part of the top wall 2d. The connection cylindrical part 10a includes a support part which protrudes from the outer peripheral surface and supports the top wall 2d of the attachment cap 2 when the body part 3 is held in an inverted posture.

Description

  The present invention relates to a trigger type liquid ejector, and more particularly to a technique for improving workability during assembly.

  In containers containing liquids such as wrinkle removers, detergents, clothing paste, residential wax, hairdressing agents, fragrances, repellents, pesticides, chemicals, etc., they are attached to the mouth of the container and the operation lever is checked. A trigger type liquid ejector that drives a pump provided in the main body by dripping and injects the liquid in the container in a linear, mist, or foam form is widely used (see, for example, Patent Document 1). This makes it possible to efficiently supply the content liquid.

  Such an ejector includes a connecting cylinder part provided at a lower portion of the main body part, and a mounting cap that is secured to a flange provided on the connecting cylinder part and is rotatably attached to the connecting cylinder part of the main body part. The mounting cap is applied to the outer periphery of the mouth so that the connecting cylinder is inserted into the mouth of the container, and the nozzle of the ejector is moved in a predetermined direction by rotating only the mounting cap while holding the main body. It can be attached to the container in the state of facing.

Japanese Patent Laid-Open No. 11-290731

  By the way, in the process of assembling the ejector as described above, the main body portion to which the mounting cap is attached may be held in an inverted posture. In such a case, as shown in FIG. 3, the mounting cap 102 disposed on the outer peripheral side of the connecting cylinder portion 103 a of the main body portion 103 falls obliquely with respect to the main body portion 103, and the efficiency of the subsequent assembly work. There is a possibility that the productivity is lowered and the productivity is lowered.

  Therefore, the present invention provides a trigger type liquid ejector capable of improving workability and improving productivity by holding the mounting cap in an appropriate position when the main body portion is in an inverted posture in the assembly process. The purpose is to provide.

The present invention has been made in order to solve the above problems, and the trigger type liquid ejector of the present invention has a mounting cap attached to the mouth portion of the container, and repeats the check of the operation lever. A trigger type liquid ejector that drives a pump provided in the container to suck, pressurize, and pump the content liquid in the container to eject the content liquid;
The mounting cap has an opening through which a connecting cylinder part provided below the main body part is inserted, and the ceiling wall is retained by a flange extending radially outward from the outer peripheral surface of the connecting cylinder part And a cylindrical side wall depending from the outer edge of the top wall,
The connecting cylinder part has a support part that protrudes from an outer peripheral surface thereof and supports the top wall of the mounting cap in an inverted posture of the main body part.

  Moreover, in the trigger type liquid ejector according to the present invention, the support part includes a front rib provided on the front side of the main body part and side ribs provided on both sides. preferable.

  Moreover, in the trigger type liquid ejector according to the present invention, the connecting cylinder portion protrudes from the rear side of the outer peripheral surface thereof, and is located rearward of the body portion in an inverted posture and positioned on the inner side of the edge portion of the opening. It is preferable to have a rib.

  According to the present invention, in the assembly process, the trigger type liquid ejector capable of improving workability and improving productivity by holding the mounting cap in an appropriate position when the main body portion is in an inverted posture. Can be provided.

It is sectional drawing in the side view which shows one Embodiment of the trigger type liquid ejector according to this invention. In the assembly process of the trigger type liquid ejector shown in FIG. 1, it is a figure which shows a mode that it hold | maintained in the inverted posture in the state which attached the mounting cap to the main-body part, (a) is a side view, (b) is a front view. It is. It is a side view which shows a mode that the conventional trigger type liquid ejector was hold | maintained in the inverted posture in the state which assembled | attached the mounting | wearing cap to the main-body part.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In the present specification, claims, abstract, and drawings, the side where the top wall of the cover described later is located is the upper side (upper side in FIG. 1), and the side on which the mounting cap is provided is the lower side (in FIG. 1). Lower side). The side on which the nozzle is provided is the front (left side in FIG. 1), and the opposite side is the rear (right side in FIG. 1). Further, a direction perpendicular to the up-down direction and the front-rear direction (a direction perpendicular to the paper surface in FIG. 1) is defined as a side.

  The code | symbol 1 in FIG. 1 shows one Embodiment of a trigger type | formula liquid ejector. The trigger type liquid ejector 1 includes a mounting cap 2 attached to the mouth of the container C, a pump that holds the mounting cap 2 in a rotatable and non-removable manner, and sucks, pressurizes, and pumps the content liquid in the container C. A main body 3 including the pipe 4, a pipe 4 that is connected to the main body 3 and extends toward the bottom of the container C and sucks up the content liquid in the container C by driving a pump, and is provided in front of the main body 3. A nozzle 5 that ejects the liquid toward the outside, an operation lever 6 that is swingably held in the main body 3 and that drives the pump by repeatedly checking, and a spring member 7 that applies a restoring force to the operation lever 6 And a cover 8 that covers the upper side and the side of the main body 3.

  The mounting cap 2 has, on the inner surface of the cylindrical side wall 2a, a screw portion 2b that fits a screw portion provided at the mouth of the container C. A top wall 2d having an opening 2c at the center is provided above the side wall 2a. At the edge of the opening 2c in the ceiling wall 2d, there is provided a ceiling wall taper portion 2e that is inclined downward toward the inside in the radial direction.

  In the present embodiment, the main body 3 is composed of a plurality of members, and the mounting cap 2 is attached to the body 10 forming one of them. The body 10 has a cylindrical connecting tube portion 10a inserted through the opening 2c, and a flange 10b extending radially outward is provided on the outer peripheral surface of the connecting tube portion 10a. A gasket sandwiched between the upper end of the mouth of the container C and the flange 10b is provided below the flange 10b. Further, a vertical cylinder 10c having a smaller diameter than the connecting cylinder part 10a is provided above the connecting cylinder part 10a. The vertical cylinder 10c extends forward and communicates with the vertical cylinder 10c. A horizontal cylinder 10d is provided, and a nozzle 5 is provided at the front end of the horizontal cylinder 10d.

  The horizontal cylinder 10d is provided with an upwardly open groove 10e that is U-shaped in a side view. A cylindrical fitting wall 10f that protrudes forward from the vertical cylinder 10c is provided below the horizontal cylinder 10d.

  Moreover, the cylinder part 11a of the intake 11 is arrange | positioned inside the vertical cylinder 10c. Further, a first check valve 11b and a second check valve 11c for preventing the backflow of the content liquid sucked by the pump are provided inside the cylinder portion 11a of the intake 11. The first check valve 11b is opened when the content liquid is sucked by the pump function, and is closed when the sucked content liquid is pressurized and pumped. On the other hand, the second check valve 11c is closed when the content liquid in the container C is sucked by the pump function, and is opened when the sucked content liquid is pressurized and pumped toward the nozzle 5.

  Here, in this embodiment, between the pipe 4 and the intake 11, a normal inverted dual-purpose mechanism that allows the content liquid in the container C to be supplied to the main body 3 regardless of whether the container C is in an upright posture or an inverted posture. X is provided. The forward / inverted dual-use mechanism X includes a valved cylinder member 14 disposed inside the mouth of the container C and a pipe attachment member 15 disposed below the valved cylinder member 14.

  The valved cylinder member 14 includes a suction member 16 having an inner cylinder 16a disposed inside the cylinder portion 11a of the intake 11, and a valve member 17 having an outer cylinder 17a disposed outside the lower portion of the inner cylinder 16a. The valve body 18 is disposed in the valve chamber V formed between the suction member 16 and the valve member 17. The suction member 16 has an inverted suction hole 16b that allows the valve chamber V and the inside of the container C to communicate with each other. The valve member 17 is closed by the valve body 18 in the upright posture of the container C, and A through hole 17b that is released in the inverted posture is formed.

  The pipe mounting member 15 to which the pipe 4 is connected is fitted to the suction member 16 from below so as to sandwich the valve member 17, and an inverted flow path 19 is formed between the pipe mounting member 15 and the valve member 17. The channel 19 for inversion is connected to the cylinder part 11a of the intake 11 via the inner cylinder 16a.

  A cylinder member 12 is provided inside the fitting wall 10 f of the body 10. The cylinder member 12 includes a cylindrical cylinder 12a fitted and held on the fitting wall 10f and a cylindrical partition cylinder 12b provided on the radially inner side of the cylinder 12a in a concentric double arrangement. Yes, the rear side of the cylinder cylinder 12a and the partition cylinder 12b is connected by a back wall 12c.

  The back wall 12 c is provided with a hole 12 d that enters the hole provided in the vertical cylinder 10 c and communicates with the hole 11 d of the intake 11. Further, although not shown, the cylinder tube 12a communicates with the inside and the outside of the cylinder tube 12a, and a hole 10h in the fitting wall 10f through a gap formed between the fitting wall 10f and the cylinder tube 12a. An outside air introduction port communicating with is provided on the side surface side.

  Inside the cylinder member 12, a piston 13 that seals the inside of the cylinder member 12 to form a cylinder chamber R is disposed. The piston 13 has an annular sliding portion 13a that slidably contacts the inner peripheral surface of the cylinder cylinder 12a. The sliding portion 13a extends forward and has an end on the front side. The peripheral wall part 13b which obstruct | occluded is provided. The sliding portion 13a closes the outside air inlet of the cylinder member 12 in a state where the operation lever 6 is not checked.

  As described above, in the present embodiment, the body 10, the intake 11, the normal / inverted dual-purpose mechanism X, the cylinder member 12, and the piston 13 constitute the main body 3 having a pump function.

  In the present embodiment, the operation lever 6 has a front wall 6a and a pair of side walls 6b provided on both sides of the front wall 6a. The operation lever 6 has a pair of columnar pivot shafts 6c that are pivotably linked to a pair of grooves 10e provided in the horizontal cylinder 10d of the body 10. Further, the operation lever 6 is provided with a columnar convex portion 6d linked to the engaging concave portion 13c of the piston 13.

  The spring member 7 is formed by integrally forming a cylindrical shaft portion 7a and a pair of arms 7b extending from both ends of the shaft portion 7a and bending. The spring member 7 of the present embodiment can be formed of a resin material, but is not limited to this.

  As shown in FIG. 1, the shaft portion 7a is swingably held by a bearing portion 10g provided between the horizontal cylinder 10d of the body 10 and the fitting wall 10f, and the pair of arms 7b sandwich the horizontal cylinder 10d. Arranged on both sides. The distal end portion 7c is in contact with the front wall 6a of the operation lever 6 from the rear, and is supported from below by a support rib 6e provided on the inner surface of the side wall 6b. The support rib 6e functions as a pressing portion that presses the distal end portion 7c of the arm 7b toward the shaft portion 7a side by checking the operation lever 6.

  In addition, the structure which hold | maintains the spring member 7 with respect to the main-body part 3 is not limited to the structure of this embodiment, For example, a bearing part is provided in the spring member 7 side, and the said bearing part is provided in the main-body part 3 side. It is good also as a structure which provided the axial part linked to. The spring member 7 can also be configured to fix one end to the main body 3.

  In the trigger type liquid ejector 1 of the present embodiment, when the operation lever 6 is checked from the initial state and the piston 13 is moved backward with respect to the cylinder member 12, the liquid in the cylinder chamber R is pressurized and pressurized. The liquid passes through the holes 12d and 11d and the second check valve 11c, and is ejected from the nozzle 5 to the outside through the inside of the horizontal cylinder 10d. Thereafter, when the operating lever 6 is released, the operating lever 6 swings forward by the restoring force of the spring member 7, and the piston 13 moves forward with respect to the cylinder member 12 following this, so that the inside of the cylinder chamber R is negative. Pressure. Thereby, the liquid in the container C is sucked up through the pipe 4 in the upright posture, and is sucked up through the suction hole 16b, the through hole 17b, and the inversion channel 19 in the inverted posture in the inverted posture, and the first check valve 11b. Is pushed up and flows into the cylinder chamber R. By repeatedly checking and releasing the operation lever 6 as described above, the liquid in the container C can be continuously ejected from the nozzle 5. It should be noted that the arm 7b is elastically deformed and swings about the shaft portion 7a during the period from the initial state to the check state where the operation lever 6 is checked.

  Furthermore, the connection cylinder part 10a of this embodiment is demonstrated in detail with reference to Fig.2 (a) (b). 2 (a) and 2 (b) show how the trigger type liquid ejector 1 is held in an inverted position with the mounting cap 2 assembled to the main body 3 in the assembly process of the trigger type liquid ejector 1. FIG. FIG. 2B is a front view.

  The connection cylinder part 10a has the front rib 30 which protrudes toward the front from the front side of an outer peripheral surface, and a pair of side rib 31 which protrudes toward the side from both sides. As shown in the figure, the front rib 30 connects the outer peripheral surface of the connecting tube portion 10a and the outer peripheral surface of the fitting wall 10f, and is parallel to the horizontal support surface 30a and the axis L that are perpendicular to the axis L of the connecting tube portion 10a. The inclined support surface 30b is inclined and the inner support surface 30c is parallel to the axis L. In the inverted posture shown in FIG. 2A, the horizontal support surface 30a contacts the top wall 2d of the mounting cap 2, and the inclined support surface 30b contacts the top wall tapered portion 2e, thereby supporting the mounting cap 2. Yes. As illustrated, in the present embodiment, the inclined support surface 30b is configured to be parallel to the top wall taper portion 2e in the inverted posture.

  In addition, at the tip of the side rib 31, a tip support surface 31a that supports the top wall 2 is formed in contact with the top wall taper portion 2e in the inverted posture, as shown in FIG. In the present embodiment, the tip support surface 31a is formed to be parallel to the ceiling wall tapered portion 2e of the ceiling wall 2d. In the trigger type liquid ejector 1 of the present embodiment, the front rib 30 and the side rib 31 are configured as a support portion that supports the mounting cap 2 in the inverted posture.

  Furthermore, in this embodiment, the connection cylinder part 10a has the back rib 32 which protrudes from the back side of the outer peripheral surface. As shown in FIG. 2A, the rear rib 32 is positioned inside the edge of the opening of the top wall taper portion 2 e in the inverted posture, and the outer peripheral surface of the connecting tube portion 10 a and the top wall of the mounting cap 2. It plays the role which reduces the clearance gap between 2a. That is, shakiness of the mounting cap 2 in the radial direction with respect to the connecting cylinder portion 10a is prevented. In the present embodiment, the ribs for preventing the rattling in the radial direction are provided only on the rear side, but a plurality of ribs may be provided at other positions.

  In the present embodiment, a small rib 33 having a height lower than that of the side rib 31 is provided below the side rib 31, and the cover shown in FIG. 1 is provided between the side rib 31 and the small rib 33. By mounting the bottom wall 8a of 8, the mountability of the cover 8 is enhanced.

  In the trigger type liquid ejector 1 of the present embodiment having the above-described configuration, an assembly process is provided by providing a support portion that protrudes from the outer peripheral surface of the connecting cylinder portion 10a and supports the top wall 2d of the mounting cap 2 in an inverted posture. In the case of the inverted posture, the mounting cap 2 can be prevented from falling obliquely with respect to the main body 3, and the workability can be improved by holding the mounting cap 2 in an appropriate position.

  Further, in the present embodiment, by providing the front rib 30 and the pair of side ribs 31 as support portions for supporting the mounting cap 2, it is ensured that the mounting cap 2 falls to the front side and the side side. It is possible to improve the workability by holding the mounting cap 2 in an appropriate position more reliably. Further, the front rib 30 has a shape corresponding to the outer shape of the top wall 2d of the mounting cap 2, thereby increasing the area of the surface on which the front rib 30 supports the mounting cap 2, and holding the mounting cap 2 in a more stable state. can do.

  Further, in the trigger type liquid ejector 1 of the present embodiment, in the inverted posture, it is located inside the edge of the opening of the top wall 2d, and the outer peripheral surface of the connecting cylinder portion 10a and the top wall of the mounting cap 2 By providing the rear rib 32 that reduces the gap with 2d, the mounting cap 2 can be held at a more appropriate position, and the mounting cap 2 can be more reliably prevented from tilting and falling.

  Furthermore, in the trigger type liquid ejector 1 of the present embodiment, as shown in FIGS. 2A and 2B, the front rib 30 and the side rib 31 are shaped so as not to be undercut in the front-rear direction, The rear rib 32 is shaped so as not to be undercut in the vertical direction. Conventionally, the mold drawing direction when the body 10 of the main body 3 is injection-molded has the front side of the body 10 as the front-rear direction and the rear side of the body 10 as the up-down direction. By adopting such a configuration, it is possible to provide the trigger type liquid ejector 1 to which new functions and effects are added without changing the conventional mold structure.

  As mentioned above, although demonstrated based on the example of illustration, this invention is not limited to the above-mentioned embodiment, It can change suitably within the description range of a claim. For example, in the present embodiment, the support portion is configured by the front rib 30 and the side rib 31, but may be configured by, for example, a rib extending over the entire circumference of the outer peripheral surface of the connecting cylinder portion 10a. Thus, the inclination of the mounting cap 2 can be more reliably suppressed. Further, the structure of the operation lever 6 and the spring member 7 and the internal structure of the main body 3 for exhibiting the pump function are not limited to those of the present embodiment, and other structures that are normally used can be used.

DESCRIPTION OF SYMBOLS 1 Trigger type liquid ejector 2 Mounting cap 2a Side wall 2b Screw part 2c Opening 2d Top wall 2e Top wall taper part 3 Main body part 4 Pipe 5 Nozzle 6 Operation lever 6a Front wall 6b Side wall 6c Pivot 6d Protrusion 6e Support rib 7 Spring member 7a Shaft portion 7b Arm 7c Tip portion 8 Cover 10 Body 10a Connection tube portion 10b Flange 10c Vertical tube 10d Horizontal tube 10e Groove portion 10f Fitting wall 10g Bearing portion 10h Hole 11 Intake 11a Tube portion 11b First check valve 11c 2 Check valve 11d Hole 12 Cylinder member 12a Cylinder cylinder 12b Partition cylinder 12c Back wall 12d Hole 13 Piston 13a Sliding part 13b Peripheral wall part 13c Engaging recess 14 Valve-equipped member 15 Pipe attachment member 16 Suction member 16a Inner cylinder 16b Inverted Suction hole 17 Valve member 17a Outer cylinder 17 Through hole 18 Valve body 19 Inverted flow path 30 Front rib 30a Horizontal support surface 30b Inclined support surface 30c Inner support surface 31 Side rib 31a Tip support surface 32 Rear rib 33 Small rib C Container L Axis R R Cylinder chamber V Valve chamber X Upside down mechanism

Claims (3)

It has a mounting cap that is attached to the mouth of the container, repeats the check of the operation lever, drives the pump provided in the main body, and sucks, pressurizes, and pumps the content liquid in the container to eject the content liquid A trigger type liquid ejector,
The mounting cap has an opening through which a connecting cylinder part provided below the main body part is inserted, and the ceiling wall is retained by a flange extending radially outward from the outer peripheral surface of the connecting cylinder part And a cylindrical side wall depending from the outer edge of the top wall,
The connection cylinder part protrudes from the outer peripheral surface, and is a trigger type liquid ejector which has a support part which supports the top wall of the mounting cap in the inverted posture of the body part.   The trigger type liquid ejector according to claim 1, wherein the support part includes a front rib provided on the front side of the main body part and side ribs provided on both sides.   3. The trigger type liquid jet according to claim 1, wherein the connecting cylinder portion has a rear rib that protrudes from a back surface side of the outer peripheral surface thereof and is positioned inward of an edge portion of the opening in an inverted posture of the main body portion. vessel.

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