JP3862079B2 - Trigger type liquid ejector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a trigger type liquid ejector.
[0002]
[Prior art]
As shown in Japanese Patent Application Laid-Open No. 2001-10655, the nozzle cap is rotatably fitted to the outer surface of the fitting cylinder formed by the front end of the injection cylinder, and is interposed between the front of the injection cylinder and the nozzle cap. A stopper member fitted to the outer surface of the fitting cylinder so as to be movable up and down is formed so that it can be raised by rotating the nozzle cap in the forward direction and can be lowered by turning in the reverse direction. The lower part of the stopper member is engaged in the lowered position and detached in the raised position with respect to the trigger that is swingable and biased forward, and is detached in the raised position. There is known a trigger type liquid ejector capable of pulling back the trigger only at the top.
[0003]
The nozzle cap is formed in a substantially equilateral triangle when viewed from the front, and when one surface of the outer peripheral surface of the cap is positioned horizontally above, the liquid flow path communicating with the nozzle hole is closed, and the stopper member is at the lower limit. It is positioned to prevent the trigger from being pulled backward, but when the nozzle cap is turned from this state and the other surface of the cap is moved upward to make it horizontal, the liquid channel opens and a stopper member Is provided so that the upper limit can be reached and the trigger can be pulled backward.
[0004]
[Problems to be solved by the invention]
In the above-described conventional example, the stopper member starts to rise from the position where the stopper member is located at the lower limit, the trigger operation is impossible and the liquid passage is closed, and the nozzle cap starts to rotate, and the rotation angle of the nozzle cap becomes about 120 degrees. When the stopper member reaches the upper limit, and the stopper member is gradually removed from the trigger during the rotation, and the liquid passage is opened, the trigger member may be accidentally pulled before the stopper member reaches the upper limit. In this case, since the engagement between the trigger and the stopper member is incomplete at this time, the engaging portion is forced to be damaged and easily damaged. In addition, the liquid operation is likely to be incomplete because the liquid passage is also triggered in an incompletely opened state.
[0005]
In the present invention, the stopper member is not raised even when the nozzle cap starts to rotate from a predetermined position, and the stopper member is raised only by the rotation of the remaining approximately 20 degrees of the nozzle cap. The main purpose is to be able to eliminate defects.
[0006]
In the above-described conventional example, when the trigger operation is mistakenly performed in the liquid discharge path blockage state, the trigger is somewhat elastically deformed, so that the liquid in the injection cylinder becomes high pressure. In order to prevent such drawbacks from being ejected, the trigger is engaged with a part of the liquid ejector when the liquid discharge path is closed, so that the drawing operation cannot be performed. Is also possible.
[0007]
For example there during the liquid discharge passage obstruction is positioned baffles before pull pulling finger-hook portion of the trigger, it is possible to inform the triggering operator liquid ejector is a liquid discharge passage closed You can also
[0008]
[Means for Solving the Problems]
As a first means, the nozzle cap 5 fitted to the outer surface of the front end portion of the injection cylinder 3 is rotated in both forward and reverse directions, whereby the nozzle hole 5b is opened and closed, and the stopper member fitted to the outer surface of the injection cylinder front portion. In the trigger type liquid ejector in which the sliding vertical plate 11 moves up and down, the trigger member can be pulled when the stopper member is raised, and the pulling operation is impossible when the stopper is lowered,
The sliding vertical plate 11 has the injection cylinder loose insertion fitting hole 13 with the injection vertical tube inserted into the insertion hole 13 so that the sliding vertical plate 11 can move up and down. The downwardly extending step portion 13c formed by the upper surface of the expanded hole portion 13b is protruded from the rear surface of the nozzle cap, and the engaging element 5a located in the fitting hole 13 is formed in the opening direction of the nozzle hole. By pushing up by rotating to raise the stopper member 10 to the upper limit, and by rotating in the nozzle hole closing direction, the lower surface of the expanded hole portion 13b is pushed down by the engaging element 5a or the stopper member is lowered by its own weight, The stopper member 10 is formed so that it can be lowered to the lower limit.
[0009]
As a second means, the nozzle cap 5 having the first means is formed in a substantially equilateral triangle shape when viewed from the front,
At the lower limit positive position of the stopper member 10 where the upper surface of the fitting hole 13 is in contact with the upper surface of the injection cylinder 3, the first surface 5c of the outer peripheral surface of the nozzle cap is positioned substantially horizontally to the upper surface of the nozzle cap, and the lower surface of the fitting hole 13 is the injection cylinder. 3 The upper surface of the stopper member in contact with the lower surface is provided so that the second surface 5d on the side of the first surface is positioned substantially horizontally on the upper surface of the nozzle cap.
[0010]
As a third means, from the rear outer surface of the injection cylinder portion having the first or second means and having both the left and right side surfaces of the sliding vertical plate 11 substantially vertical and fitted with the sliding vertical plate The protruding plate 21 protrudes and the guide plates 23 and 23 having the longitudinal grooves 22 and 22 vertically formed on the inner surface protrude from the left and right sides of the protruding plate forward, and into the longitudinal grooves, the sliding vertical The left and right sides of the plate were fitted to move up and down.
[0011]
As a fourth means, the first engaging plate 12 having the first, second or third means and protruding rearward from the lower end of the sliding vertical plate 11 of the stopper member 10 is provided in the middle of the upper plate 31 in the left-right direction. The second engagement plates 33 and 33 are suspended from the left and right rear portions of the upper plate 31 along the outer surfaces of the rear ends of the guides. The guide 35 is formed so as to protrude rearward from the intermediate portion in the left-right direction of the enlarged rear surface 34 formed as each continuous rear surface of the engagement plate,
Further, an upper part of the trigger 7 is formed by left and right side walls 41, 41, and a concave plate 43 is suspended from the inner ends of the inward flanges 42, 42 horizontally provided on the inner surfaces of both side walls.
Further, the upper surface of the cylinder 6 and the lower surface of the injection cylinder 3 are connected by a pair of left and right reinforcing plates 51, 51, and the front surfaces of these both reinforcing plates are provided in parallel with the sliding vertical plate 11,
With the stopper member 10 positioned at the lower limit, the guide 32 is positioned in the concave plate 43, and the left and right portions of the upper plate 31 are placed on the inward flanges 42 and 42, and the front surfaces of the second engagement plates 33 and 33. Is in contact with the rear surfaces of both inward flanges 42 and 42, and the guide 35 is fitted between the two reinforcing plates 51 and 51, and the left and right parts of the enlarged rear surface 34 are in contact with the front surfaces of both reinforcing plates 51 and 51. Provided.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment shown in FIGS. 1 to 8 will be described first. In this embodiment, when the nozzle cap rotates in both forward and reverse directions, the sliding vertical plate of the stopper member moves up and down, and when it is in the lowered position, the trigger is engaged with a part of the stopper member. The purpose is to eliminate the drawbacks of the conventional example described above, which makes the operation impossible .
[0018]
Hereinafter, a conventional well-known structure will be briefly described with reference to the drawings. Reference numeral 1 denotes a container body, 2 denotes a mounting cylinder fitted to the mouth and neck of the container body, and the main cylinder stands up from the mounting cylinder. The injection cylinder 3 protrudes forward from the upper end of the main cylinder. The front end portion of the injection cylinder is a fitting cylinder 4, and a substantially triangular nozzle cap 5 is rotatably fitted to the outer surface of the fitting cylinder when viewed from the front. Further, the cylinder 6 is provided so as to be inclined downward and forward from the lower surface of the rear portion of the injection cylinder on the upper surface of the main cylinder. Further, the trigger 7 is suspended from the front portion of the injection cylinder 3 so as to be swingable in the rear direction, and the pushing plate 9 for the plunger 8 that is fitted forwardly into the cylinder is projected from the rear surface of the trigger. .
[0019]
Further, the sliding vertical plate 11 of the stopper member 10 projecting backward from the first engaging plate 12 from the lower end of the sliding vertical plate 11 is inserted into the fitting cylinder 4 through the fitting hole 13 formed in the manual vertical plate as shown in FIG. It hangs down and freely fits to the outer surface of the base. Further, an engaging element 5a shown in FIG. 3 is projected from a part of the rear end surface of the nozzle cap 5 and is loosely inserted into the fitting hole 13, and the engaging element 5a is turned by rotating the nozzle cap 5. When it moves along the outer surface of the fitting cylinder 4 and is positioned above the upper face of the fitting cylinder, the sliding vertical plate 11 is pushed up, and the engaging element 5a is moved outwardly from the fitting cylinder 4 side. The sliding vertical plate 11 is provided so as to move downward.
[0020]
When the stopper member 10 is lowered, a part of the first engagement plate 12 protruding rearward from the lower end of the sliding vertical plate 11 is engaged with a part of the trigger, and the pump operation by the rearward pulling of the trigger is impossible, and At this time, the first surface 5c of the outer peripheral surface of the nozzle cap 5 having a front triangular shape is positioned substantially horizontally on the upper surface, and at this time, the passage communicating with the nozzle hole 5b of the nozzle cap is in a closed state.
[0021]
Further, when the stopper member 10 is pulled up to the upper limit, the engagement is released and the trigger 7 can be pulled backward, and at this time, the passage to the nozzle hole 5b is opened.
[0022]
As shown in FIG. 3, the first improvement of the present invention is that the sliding vertical plate 11 moves up and down while the fitting tube 13 is inserted through the fitting hole 13 formed in the stopper member vertical moving vertical plate 11. The vertically elongated hole portion 13a has a shape in which an expanded hole portion 13b having a shape in which the lower one side is expanded outward is attached to the lower side of the vertically elongated hole portion 13a. The engaging step 5c that protrudes from the rear surface of the nozzle cap 5 pushes up the formed downward stepped portion 13c as shown in FIG. 4D by rotating in the positive direction of the nozzle cap. 4 is the upper limit in contact with the lower surface, and at this time, the second surface 5d of the nozzle cap is provided so as to be positioned substantially horizontally on the upper surface of the nozzle cap.
[0023]
Therefore, as shown in FIG. 1A, the upper surface of the fitting hole 13 of the sliding vertical plate 11 as a part of the stopper member is in contact with the upper surface of the fitting cylinder 4, and the first of the three surfaces forming the outer surface of the nozzle cap. The engaging element 5a that protrudes from the rear surface of the nozzle cap and protrudes into the fitting hole 13 at the lower limit positive position of the sliding vertical plate 11 in which the surface 5c is positioned substantially horizontally on the upper surface of the nozzle cap is a non-expanded hole at the lower end of the vertically elongated hole portion. By contacting the side surface and rotating the nozzle cap in the forward direction as shown in FIGS. B and C, the engaging element 5a is in contact with the lower surface of the downward stepped portion 13c and further rotated from this position. As shown in FIG. 4D, the engaging element pushes up the sliding vertical plate 11 through the downward stepped portion 13c. At this time, the lower surface of the fitting hole comes into contact with the lower surface of the fitting tube 4 and becomes the upper limit. The nozzle cap second surface 5d on the side of the surface 5c is positioned almost horizontally on the upper surface of the nozzle cap. The
[0024]
When the nozzle cap 5 is rotated in the reverse direction as shown in FIG. E from this state, the engaging element 5a pushes down the lower surface 13d of the expanded hole portion 13b, or the stopper member descends by its own weight. The fitting hole upper surface is lowered to the lower limit where it contacts the upper surface of the fitting cylinder 4. From this state, the nozzle cap 5 is turned to the lower limit positive position shown in FIG. A, and the nozzle cap first surface 5c is positioned on the upper surface to be horizontal. At this time, the engaging element 5a stops in contact with the side surface of the fitting hole 13 on the non-expanded hole side.
[0025]
As described above, the nozzle cap rotation angle from the state shown in FIG. 3C where the engaging element 5a is in contact with the lower surface of the downward stepped portion 13c to the completion of pushing up shown in FIG. A rotation angle for lowering the bottom surface 13d of the hole to lower the sliding vertical plate 11 is about 20 degrees.
[0026]
As shown in FIG. 7, the second improvement of the present invention is that the projecting plate 21 protrudes from the rear outer surface of the fitting tube 4 as the front end of the injection tube with which the sliding vertical plate 11 is fitted. From left and right sides forward, the guide plates 23 and 23 with vertical grooves 22 and 22 formed on the inner surface protruded, and the left and right sides of the sliding vertical plate 11 were fitted into these grooves so as to be movable up and down. That is. The left and right side surfaces of the sliding vertical plate 11 are vertical so that the vertical plate 11 can move vertically, and the corresponding part of the vertical groove bottom surface in contact with the left and right side surfaces is also substantially vertical.
[0027]
The third improvement of the present invention is that the first engagement plate 12 protruding rearward from the lower end of the sliding vertical plate is also provided to move up and down substantially vertically.
[0028]
Therefore, the first engagement plate 12 is formed in a T-shaped section that hangs down the guide 32 as shown in FIGS. 4 and 5 from the intermediate portion in the left-right direction of the upper plate 31 and is guided from both the left and right rear portions of the upper plate. The second engaging plates 33 and 33 are suspended along the outer surface of the end portion, and further in the horizontal direction of the enlarged rear surface 34 formed by using the rear surfaces of the upper plate 31, the guide 32 and the second engaging plates 33 and 33 as continuous surfaces. A guide 35 is formed to protrude rearward from the portion.
[0029]
Further, as shown in FIG. 8, the upper part of the trigger 7 is formed only by the left and right side walls 41, 41, and the inward flanges 42, 42 laid horizontally on the inner surfaces of both side walls are suspended from both ends of the concave plate 43. Forming.
[0030]
Further, as shown in FIGS. 1 and 2, the upper surface of the cylinder 6 and the lower surface of the injection cylinder 3 are connected by a pair of left and right reinforcing plates 51 and 51, and the front surfaces of these both reinforcing plates are slid vertically in front of the upper front end of the cylinder. It is provided in parallel with the plate 11.
[0031]
In this way, when the stopper member 10 is located at the lower limit, the guide 32 is located in the concave plate 43 as shown in FIG. The front surfaces of the engagement plates 33 and 33 are in contact with the rear surfaces of both inward flanges, and the guide 35 is fitted between the two reinforcement plates 51 and 51. Provided to contact the front.
[0032]
Therefore, in the state shown in FIG. 1, the front surfaces of the second engagement plates 33 and 33 are in contact with the rear surface of the inward flange 42, and the left and right portions of the enlarged rear surface 34 are in contact with the front surfaces of both the reinforcing plates 51 and 51. Cannot be pulled backwards.
[0033]
When the stopper member 10 is lifted as shown in FIG. 2 by the rotation of the nozzle cap 5 described above, the second engagement plates 33 and 33 are detached from the rear surfaces of the inward flanges 42 and 42, so that the trigger 7 can be pulled backward.
[0034]
9 to 12 show a reference example of the present invention . In this example , as described above, the trigger operator is informed using the baffle plate that the liquid ejector is in the liquid discharge path blockage state .
[0035]
In this embodiment, a rotating member 61 is provided to suspend the lever from the outer surface of the cylindrical portion with the foaming mechanism, and the cylindrical portion is non-rotatably fitted to the outer surface of the nozzle cap, and the nozzle cap is connected to the nozzle hole 5b. In the pivot position that closes the lever, the lever hangs down so that a part of the lever comes into contact with the side surface of the trigger 7 and the front edge of the lever protrudes forward of the finger hooking portion 7a of the trigger. In the illustrated example, as shown in FIG. 10, the cylindrical portion 62 has a substantially triangular shape when viewed from the front, like the nozzle cap 5, and the support plate extends from the middle portion of each side of the front end of the cylindrical portion toward the center of the front end surface of the cylindrical portion. 63 is protruded, the cylinder 64 is held at the front end of the support plate, and a plurality of thin rods 65 protrude from the front end surface of the cylinder to the center of the front end surface at substantially equal intervals. The ends of the thin rods protruding from the position are connected by the strips 66. The rear end portion of the cylinder 64 extends from the front surface of the front wall of the nozzle cap that has the nozzle hole 5b in the center thereof to the front outer surface of the fitting cylinder 68 with a partially cutout portion 67 that protrudes forward around the nozzle hole. The cylinder 64, the thin bar 65, and the thin piece 66 form a foaming mechanism. The nozzle cap 5 has a known spin mechanism, and the mist sprayed by high-speed rotation from the nozzle hole 5b through the spin mechanism collides with the inner surface of the front part of the cylinder 64 or the thin rod 65, and the inside of the cylinder It is mixed with air and foamed and discharged to the front of the cylindrical portion 62. Outside air flows into the cylinder 64 through the plurality of support plates 63, between the cylinder 64 and the nozzle cap front wall, and through the notch 67 of the fitting cylinder 68. The foaming mechanism can also be formed by attaching a foam net to the front surface of the cylinder 64. Desirably, a front surface and a groove 69 having both left and right openings are formed in the front surface of the inner end portion of the support plate 63.
[0036]
As shown in each figure, the lever 70 is suspended from the lower part of the right side of the figure with one side of the triangular cylindrical part 62 positioned almost horizontally upward, and is triggered from the rear edge of the plate part. The first engaging plate 72 for contact with the side portion of the front surface is protruded, and the second engaging plate 73 to the trigger side surface protrudes backward from the lower rear surface of the plate portion 71.
[0037]
The rotating member 61 is non-rotatably fitted to the outer surface of the nozzle cap 5 in the closed state of the nozzle hole 5b when the lever 70 is suspended as described above, and the first engaging plate 72 is moved to the side of the front surface of the trigger 7. Further, the second engagement plate 73 is brought into contact with the side surface of the trigger. At this time, the front part of the plate part 71 protrudes forward of the side surface of the finger-fitting part 7a of the trigger. When the lever 70 is rotated together with the nozzle cap 5 and the nozzle cap moves to the nozzle hole 5b closing position, the lever 70 protrudes outward from the nozzle cap 5 side. The rotating member 61 may be formed of a transparent synthetic resin material. Moreover, it is good to integrally mold with synthetic resin material.
[0038]
The trigger type liquid ejector of the second embodiment excluding the rotating member 61 is substantially the same as that of the first embodiment, and the description thereof is omitted by attaching the same reference numerals.
[0039]
【The invention's effect】
According to the present invention, the stopper member that has been moved up and down by rotating the nozzle cap by about 120 degrees is rotated by about 20 degrees. Thus, it is possible to prevent the trigger operation when the stopper member is not fully moved up and down.
[0040]
According to the second aspect, the liquid ejector according to the first aspect can have a function of determining the normal position of the nozzle cap at the lower limit of the stopper member.
[0041]
By making it like Claim 3, the vertical movement of the stopper member of the liquid ejector of Claim 1 or 2 can be performed smoothly.
[0042]
By making it like Claim 4, the trigger attraction | suction prevention at the time of the stopper member fall of Claim 1, 2, or 3 can be performed reliably and safely.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a liquid ejection container of the present invention.
2 is a partially cutaway side view of the liquid ejector of FIG. 1 in a liquid ejectable state.
FIG. 3 is an explanatory diagram showing a positional relationship between a nozzle cap and a stopper member.
FIG. 4 is a front view of the stopper member.
FIG. 5 is a side view of the stopper member.
6 is a top view of the stopper member. FIG.
FIG. 7 is an enlarged top view of the front portion of the injection cylinder shown with the stopper member attached.
FIG. 8 is a rear view of the trigger of FIG. 1;
FIG. 9 is a side view of a partially-cut liquid ejection container, which is a reference example of the present invention .
FIG. 10 is a front view of main members used in the container of FIG. 9;
FIG. 11 is a side view of the member shown in FIG.
12 is a bottom view of the member in FIG. 10. FIG.

Claims (4)

 By rotating the nozzle cap 5 fitted to the outer surface of the front end of the injection cylinder 3 in both forward and reverse directions, the nozzle hole 5b opens and closes, and the sliding vertical plate 11 of the stopper member fitted to the outer surface of the front of the injection cylinder 3 In the trigger type liquid ejector in which the pulling operation of the trigger 7 can be performed when the stopper member is raised and the pulling operation is not possible when the stopper member is lowered, the sliding vertical plate 11 has a sliding cylinder 11 The fitting hole 13 has a shape in which the lower one side of the vertically long hole portion 13a provided so that the sliding vertical plate 11 can be moved up and down with the injection cylinder inserted is widened outward, and the widened hole portion. The downwardly extending step 13c formed by the upper surface of 13b protrudes from the rear surface of the nozzle cap and the engaging element 5a located in the fitting hole 13 pushes up the stopper member 10 to the upper limit by rotating in the nozzle hole opening direction. The lower surface of the expanded hole portion 13b is lifted and rotated in the nozzle hole closing direction. By engaging member 5a is pressed down to the stopper member is lowered by its own weight, the triggering liquid ejectors stopper member 10 is characterized in that the lowerable formed to the lower limit.  The nozzle cap 5 is formed in a substantially regular triangular shape when viewed from the front, and the first surface 5c of the outer peripheral surface of the nozzle cap is the nozzle cap at the lower limit positive position of the stopper member 10 where the upper surface of the fitting hole 13 is in contact with the upper surface of the injection cylinder 3 The second surface 5d on the side of the first surface is positioned substantially horizontally on the upper surface of the nozzle cap at the stopper member upper limit position where the lower surface of the fitting hole 13 is in contact with the lower surface of the injection cylinder 3 while being positioned substantially horizontally on the upper surface. The trigger type liquid ejector according to claim 1, wherein the trigger type liquid ejector is provided.  The left and right side surfaces of the sliding vertical plate 11 are made substantially vertical and the protruding plate 21 protrudes from the rear outer surface of the injection cylinder portion into which the sliding vertical plate is fitted, and forward from the left and right side portions of the protruding plate. The guide plates 23 and 23 having vertical grooves 22 and 22 formed on the inner surface are projected, and the left and right sides of the sliding vertical plate are fitted into these vertical grooves so as to be movable up and down. The trigger type liquid ejector according to claim 1 or 2. The first engagement plate 12 projecting rearward from the lower end of the sliding vertical plate 11 of the stopper member 10 has a T-shaped section in which the guide 32 is suspended from the intermediate portion in the left-right direction of the upper plate 31 and both the left and right sides of the upper plate 31. From the rear part, the second engagement plates 33 and 33 are suspended along the outer surface of the rear end of the guide, and from the intermediate part in the left-right direction of the enlarged rear surface 34 formed by using the rear surfaces of the upper plate, guide and second engagement plate as continuous surfaces. The guide 35 is formed to project rearward, and the upper part of the trigger 7 is formed by the left and right side walls 41, 41. 43 is formed by hanging, and the upper surface of the cylinder 6 and the lower surface of the injection cylinder 3 are connected by a pair of left and right reinforcing plates 51 and 51, and the front surfaces of these both reinforcing plates are provided in parallel with the sliding vertical plate 11, 10 is positioned at the lower limit, the guide 32 is located in the concave plate 43, and the left and right parts of the upper plate 31 are on both inward flanges 42, 42. The second engagement plates 33, 33 are in contact with the rear surfaces of the inward flanges 42, 42, and the guide 35 is fitted between the reinforcing plates 51, 51. 4. The trigger type liquid ejector according to claim 1, wherein the reinforcing plate is provided in contact with the front surface of the reinforcing plate.

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