JP4162943B2 - pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pump.
[0002]
[Prior art]
As a pump to be used by being mounted on a container body, it is provided with a vertically moving member in which a jet head is fitted to the tip of a stem protruding so as to be able to be pushed in an upwardly biased state from a cylinder with a lower end portion suspended in the container body. A suction valve is provided in the stem, and a discharge valve is provided in the stem. The vertical movement member is moved up and down to suck up the liquid in the mounted container and eject it from the jet port of the head. Among these types of pumps, a vertical push-down type or a trigger type is known.
[0003]
The former is configured such that a vertical movement member is moved up and down by fitting a jet head having a jet opening at the front face to the upper end of a vertically extending stem and pushing down the head. Also, as an example of the latter, there is a trigger that refracts the upper part of the stem forward and that has a spout head that is open to the front at the tip of the stem and is linked to the mounting cap so that it can swing. A combination of the trigger and the stem is known.
[0004]
In these pumps, liquid can be ejected in a rod shape, or the internal structure of the ejection head can be ejected in a mist shape, or a pump that can be switched between a rod shape and a mist shape is also used. Has been.
[0005]
[Problems to be solved by the invention]
Conventional pumps of this type are known that can switch between the rod-like jet form and the mist-like jet form as described above. However, in the present invention, different jet quantities can be obtained by a simple switching operation. A pump that can do this is proposed.
[0006]
[Means for Solving the Problems]
The first means is configured as follows. That is, a mounting cylinder in which a flange-like top plate 8 is extended inward from the upper end edge of the mounting cylinder 7 fitted to the outer periphery of the mouth neck portion 6 of the container body B, and the support cylinder 9 is erected upward from the inner peripheral edge of the top plate 8. A member 2, a cylinder 3 having an upper portion fitted in the support cylinder 9 and a lower end depending on the container body B, and a stem 17 in which an annular piston 20 fitted to the inner periphery of the cylinder is linked to the outer periphery of the lower portion. A vertically moving member 4 projecting so as to be able to be pushed down in an upwardly biased state above the support cylinder 9, and the upper part of the stem 17 is refracted forward and the ejection nozzle 21 is fitted to the tip thereof, and the rear part of the mounting cylinder member 2 A rear end portion is pivotally attached to the upper end portion of the support plate 11 that is further erected, and a pair of side plates 23 are extended to both sides of the upper portion of the stem so as to be able to swing up and down, and a finger hook portion 24 is suspended from the front portion of each side plate 23. And the pressing protrusion 26 on the inner surface of the side plate 23 is placed on the outer surface of the stem 17. The trigger 5 engaged with the pressing projection 27 so as to be able to be pushed down, and the lower end of the trigger tube 5 are rotatably fitted to the upper end portion of the support cylinder 9, and a plurality of engaging step portions a1,. A pressed protrusion 27 that is provided with a cylinder 28 and is pushed down by pulling in a trigger is configured as an engaging protrusion 29 that comes into contact with any one level of each locking step a1 at a predetermined rotation position.
[0007]
The second means is configured as follows. That is, in the first means, there is provided a locking means for locking each of the locking steps a1... At a position corresponding to the lower side of the engaging protrusion 29, and the locking means is provided at a predetermined position on the outer surface of the rotary cylinder 28. In addition, the engaging protrusion 32, the engaging protrusion 33 for engaging the engaging protrusion 32, and the temporary fixing protrusion 34 on which the engaging protrusion 32 can get over are disposed at predetermined positions on the peripheral surface of the rotating cylinder facing wall.
[0008]
The third means was configured as follows. That is, in either the first means or the second means, the knob 30 protrudes from the outer surface of the rotating cylinder 28.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
The pump A of the present invention is used by being mounted on the container body B, and is not limited to the trigger type as shown in the illustrated example, but may be a vertical push-down head type. In the illustrated example, the pump A includes a mounting cylinder member 2, a cylinder 3, a vertical movement member 4, and a trigger 5.
[0013]
The mounting cylinder member 2 has a flange-shaped top plate 8 extending inward from the upper end edge of the mounting cylinder 7 screwed to the outer periphery of the mouth neck portion 6 of the container body B, and a support cylinder 9 upward from the inner peripheral edge of the top plate 8. And a flange 10 is provided on the upper portion of the support tube 9 so as to project. A pair of support plates 11 are erected obliquely upward and rearward from the rear upper surface of the top plate 8 and the rear surface of the support cylinder 9, and the rear edge portions of the support plates 11 are connected to each other by a connection plate 12.
[0014]
The cylinder 3 has a bottomed cylindrical shape in which the upper outer periphery is fitted and fixed in the support cylinder 9, and a flange portion 13 that protrudes from the outer peripheral vertical direction middle portion and is fitted to the lower surface of the top plate 8 via a packing 14. And is in pressure contact with the upper surface of the mouth and neck 6. A suction valve 15 is provided at the lower end of the cylinder 3, and a suction pipe 16 is fitted below the suction valve 15.
[0015]
The vertical movement member 4 has a stem 17 that protrudes from the inside of the cylinder 3 so as to be pushed upward, and communicates the jet outlet 18 at the tip with the inside of the cylinder 3 through the stem 17. In the illustrated example, a coil spring 19 is interposed below and an annular piston 20 slidably fitted into the cylinder 3 is constructed. Is linked to the lower outer periphery of the stem 17. Further, the upper portion of the stem 17 projecting so as to be able to be pushed down to the upper side of the support cylinder 9 is refracted forward, and the ejection nozzle 21 is fitted at the distal end thereof, and the ejection outlet 18 is opened at the distal end. The ejection nozzle 21 is provided with a known discharge valve and spray mechanism.
[0016]
The trigger 5 includes a pair of side plates 23 pivotally attached to the outer surface of the upper end of each support plate 11 and the inner surface of the rear end. The trigger 5 extends up and down on both sides of the upper portion of the stem 17 and swings from the front of each side plate 23. The finger rest 24 is suspended. A connecting plate portion 25 is stretched between the rear edge and the rear upper edge of each side plate 23, and the lower surface thereof is brought into contact with and locked to the upper surface of the connecting plate 12 between the support plates 11. In addition, the finger hanging portion 24 has a front plate whose upper surface is in contact with the lower surface of the stem 17 immediately after the fitting portion of the ejection nozzle 21 and a rear plate extending rearward from both sides of the front plate so that the upper end is integrated with the lower surface of the front portion of each side plate 23. It has a U-shaped cross section composed of connected horizontal plates.
[0017]
Further, the pressing protrusions 26 protruding from the inner surfaces of the side plates 23 are linked to the pressed protrusions 27 protruding from the outer surface of the stem 17 so that they can be pushed down. In the illustrated example, the pressed protrusion 27 has a horizontal cylindrical shape protruding from both upper ends of the vertical portion of the stem 17, and the pressing protrusion 26 protrudes from the lower part of the inner surface in the longitudinal direction of each side plate 23. It has a horizontal plate shape.
[0018]
Then, the pressing projection 26 pushes down the pressed projection 27 by pushing the trigger 5 with a finger placed on the finger-hanging portion 24, and consequently pushes the vertical movement member 4 down. Thereby, the liquid in the cylinder 3 is pressurized, and the pressurized liquid opens the discharge valve and is ejected from the ejection port 18. When the trigger is released, the upward and downward movement member 4 is lifted by the upward biasing force of the coil spring 19, the suction valve 15 is opened, and the liquid in the container body B is introduced into the cylinder 3. At this time, the pressed protrusion 27 pushes up the pressing protrusion 26 and the trigger 5 returns to the original state.
[0019]
In the present invention, such a trigger type pump is provided with a stroke conversion mechanism for converting the pushing width of the stem 17. By providing this strol converting mechanism, the push-down width of the vertically moving member 4 can be changed in a plurality of stages so that the ejection amount of the liquid can be changed once.
[0020]
The stroke conversion mechanism in the present invention is rotatably mounted on a wall portion around the protruding portion of the stem 17, and a rotary cylinder 28 having a plurality of locking step portions a1,. The engaging protrusion 29 is provided on the outer surface of the vertical movement member 4 and abuts against any one level of the respective locking step portions a1 at a predetermined rotational position when the vertical movement member 4 is pushed down. Yes.
[0021]
The number of locking step portions having different levels may be plural, and is not particularly limited as long as laying is possible, and the number can be appropriately selected as necessary. However, the case where one of the levels of the locking stepped portion abuts on the engaging protrusion 29 in a state where the vertical movement member 4 cannot be pushed down is excluded. In this case, a plurality of locking steps having different levels are provided outside this level. Therefore, when the highest level locking step is in contact with the engaging protrusion 29, it is necessary to provide two or more different types of locking steps at different levels. Further, the locking step portion may be single or plural at the same level, and can be appropriately selected depending on the number of engagement protrusions 29 and the like. Therefore, whether the number of the engaging protrusions 29 is singular or plural may be appropriately selected according to the structure of the locking step a1.
[0022]
In the illustrated example, the engaging protrusion 29 is also used as the pressed protrusion 27, that is, a pair of engaging protrusions 29 are provided on both sides of the upper portion of the vertical portion of the stem 17. Further, the rotary cylinder 28 is rotatably fitted in the support cylinder 9 as a wall portion around the stem protruding portion with its lower surface abutting on the upper surface of the flange 10. On the upper surface of the rotary cylinder 28, as shown in FIG. 4, a pair of three levels of locking steps a1, a2, and a3 are provided at opposing positions.
[0023]
As shown in FIG. 5 (a), when the highest locking step a1 is located on both sides, each engaging projection 29 is positioned on the locking step a1 to prevent the trigger 5 from being pulled. As a result, the stem 17 is prevented from being pushed. When the rotary cylinder 28 is rotated 60 degrees, as shown in FIG. 5 (b), the second highest locking step a2 is positioned at the position facing each engaging projection 29, and can be pushed down to that position. It becomes. When it is further rotated by 60 degrees, as shown in FIG. 5C, the lowest locking step a3 is positioned at the position facing each of the engaging protrusions 29 and can be pushed down to that position.
[0024]
The rotary cylinder 28 may be provided with a knob 30 as illustrated. Various shapes of the knob 30 can be adopted, but in the illustrated example, a tabular knob having an inner edge rotatably fitted to the outer surface of the support cylinder 9 through a bar-shaped connecting piece 31 protruding from the upper outer periphery of the rotary cylinder 28. There are 30.
[0025]
Further, the rotating cylinder 28 may be provided with locking means for locking the locking step portions a1,. This locking means is capable of getting over the engaging protrusion 32 and the locking protrusion 33 and the engaging protrusion 32 for locking the engaging protrusion 32 at a predetermined position on the outer surface of the rotating cylinder 28 and a predetermined position on the peripheral surface of the rotating cylinder. A temporary fixing projection 34 is provided to project. The locking projection 33 restricts the region so that the rotary cylinder 28 can rotate at a required angle, and the temporary fixing projection 34 is provided at a required locking point in the region according to the number of the locking step portions. Further, the engaging protrusion 32 rotates relatively between the both locking protrusions 33, and is temporarily locked with the temporary fixing protrusion 34. When a stronger force is applied, the rotating protrusion 32 can get over. Is.
[0026]
In this embodiment, as shown in FIG. 4, a locking projection 33 is provided on the front end of the inner peripheral upper end of the support cylinder 9 as the peripheral surface of the rotating cylinder, and at an interval of about 120 degrees from the locking projection 33. The other locking projection 33 is projected from the right side of the opening. In addition, a temporary fixing projection 34 is provided at a position approximately 60 degrees apart from the middle portion of each locking projection 33. On the other hand, on the outer surface of the rotating cylinder 28, an engaging protrusion 32 is provided at a position where it abuts against the one engaging protrusion 33, and in this state, the highest engaging step is positioned below each engaging protrusion 29. The configuration is such that the part a1 is located.
[0027]
Then, the engaging protrusions 32 are configured to be rotatable between the respective locking protrusions 33, and when the engaging protrusions 32 are in contact with the temporary fixing protrusions 34, as shown in FIG. The second highest locking step a2 is positioned at the position facing each engaging protrusion 29, and it can be determined by hand touch that the position is the predetermined locking position, and if it is further rotated, the engagement The mating protrusion 32 gets over the temporary fixing protrusion 34. Further, the engaging protrusion 32 is rotated and locked to the position of the other locking protrusion 33. At this time, as shown in FIG. The stop portion a3 is located.
[0028]
【The invention's effect】
As described above, the pump according to the present invention is configured as described above, so that different amounts of ejection can be produced.
[0029]
Further, in the case where the stroke conversion mechanism is configured by the rotary cylinder 28 and the engagement protrusion 29, the ejection amount can be changed by a simple operation of rotating the rotary cylinder 28, and Since the rotating cylinder is mounted around the stem 17, it has the advantage that it does not get in the way.
[0030]
In addition, in the case where the locking means for locking each locking step a1... At the position corresponding to the lower side of the engaging protrusion 29 is provided, the ejection amount can be switched with the touch of the hand. Convenient.
[0031]
Further, in the case where the knob 30 is protruded from the outer surface of the rotating cylinder 28, the rotating cylinder is more easily rotated, and as a result, the ejection amount is more easily switched.
[0032]
Also, the ejection operation performed ejection of liquid by subtracting the trigger 5 is easy and also it is possible to vary the amount of ejection by the same simple operation and the pump, to have a knob 30 This makes it possible to switch the ejection amount more easily.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the same embodiment.
FIG. 3 is an enlarged vertical cross-sectional view of a main part of the embodiment.
FIG. 4 is an explanatory diagram for explaining a rotating cylinder portion of the embodiment.
FIG. 5 is an explanatory diagram for explaining the operation of the embodiment;
[Explanation of symbols]
2 ... Installation cylinder member, 3 ... Cylinder, 4 ... Vertical movement member, 5 ... Trigger,
6 ... mouth and neck, 7 ... mounting cylinder, 8 ... top plate, 9 ... support cylinder, 11 ... support plate,
17 ... Stem, 18 ... Spout, 21 ... Spout nozzle, 23 ... Side plate, 24 ... Finger hook,
26 ... Pressing projection, 28 ... Rotating cylinder, 29 ... Engaging projection, 30 ... Pinch, 32 ... Engaging projection,
33 ... Locking protrusion, 34 ... Temporary fixing protrusion, B ... Container body, a1, a2, a3 ... Locking step

Claims (3)

A mounting cylinder member 2 in which a flange-like top plate 8 extends inwardly from the upper end edge of the mounting cylinder 7 fitted to the outer periphery of the mouth neck portion 6 of the container body B, and the support cylinder 9 stands up from the inner peripheral edge of the top plate 8. A cylinder 3 whose upper part is fitted in the support cylinder 9 and whose lower end is suspended in the container body B, and a stem 17 in which an annular piston 20 fitted to the inner periphery of the cylinder is linked to the outer periphery of the lower part. 9 A vertically moving member 4 that protrudes upward in an upwardly biased state and that refracts the upper portion of the stem 17 and has the ejection nozzle 21 fitted at the tip thereof, and a rear portion of the mounting cylinder member 2. A rear end portion is pivotally attached to the upper end portion of the support plate 11 and a pair of side plates 23 are extended to both sides of the upper portion of the stem so as to be able to swing up and down, and a finger hook portion 24 is suspended from the front portion of each side plate 23. In addition, the pressing protrusion 26 on the inner surface of the side plate 23 is pressed against the outer surface of the stem 17. A rotary cylinder having a plurality of engaging stepped portions a1,. 28, and a pressed protrusion 27 that is pushed down by pulling in the trigger is configured as an engaging protrusion 29 that abuts on any one level of each locking step a1 at a predetermined rotational position. pump. Locking means for locking each of the locking step portions a1... At a position corresponding to the lower side of the engagement protrusion 29 is provided. The pump according to claim 1, further comprising: an engaging protrusion 32, a locking protrusion 33 that locks the engaging protrusion 32, and a temporary fixing protrusion 34 that the engaging protrusion 32 can get over. The pump according to claim 1, wherein a knob 30 is provided so as to protrude from the outer surface of the rotary cylinder 28.

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