JP2004060617A - Pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump with a stem 17 protruded out of a cylinder 3 so as to be pushed therein in an upward energized condition and a vertically movable member 4 communicating a nozzle 18 at the end with the cylinder 3 via the stem for pumping a liquid out of a mounted container B with the vertical movement of the vertically movable member and jetting it from the nozzle 18, developing jetting characteristics different in amount with simple switching operation. <P>SOLUTION: A stroke changing mechanism is provided for changing the push-in range of the stem 17. Thereby, the jet amount of the liquid can be changed with a change in the push-in range of the stem 17, as required. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pump.
[0002]
[Prior art]
As a pump used by being mounted on the container body, the pump includes a vertically moving member in which a jetting head is fitted to a tip of a stem which protrudes so as to be able to be pushed in a state of being urged upward from a cylinder having a lower end part suspended in the container body, A suction valve is provided in the inside, and a discharge valve is provided in the stem, so that the liquid in the mounted container is sucked up by moving the up-and-down moving member up and down and is ejected from the ejection port of the head. Further, among these types of pumps, a vertical push-down type and a trigger type are known.
[0003]
The former is configured such that an ejection head having an ejection port opened at the front face is fitted to the upper end of a vertically extending stem, and the vertical movement member is moved up and down by pushing down the head. Also, as an example of the latter, a trigger is provided in which the upper portion of the stem is bent forward and a jetting head having a jetting port opened at the front end thereof is fitted to the tip thereof, and separately swingably linked to the mounting cap. One in which the trigger and the stem are linked is known.
[0004]
In these pumps, liquid can be ejected in the form of a rod, or can be ejected in the form of a mist by specially configuring the internal structure of the ejection head, or a pump that can be switched between the rod and the mist can be used. Have been.
[0005]
[Problems to be solved by the invention]
Conventional pumps of this type are known which are capable of switching between the above-described rod-like ejection form and the mist-like ejection form. However, in the present invention, different ejection amounts can be obtained by a simple switching operation. It is intended to propose a pump that can be used.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the pump according to the first aspect of the present invention has a stem 17 protruding from the inside of the cylinder 3 so as to be able to be pushed in an upwardly biased state. The vertical width of the stem 17 in the pump provided with the vertical movement member 4 communicating with the vertical movement member 4 so as to suck up the liquid in the container body B mounted by the vertical movement of the vertical movement member 4 and eject the liquid from the ejection port 18. The pump is provided with a stroke conversion mechanism for changing the pressure.
[0007]
In the pump according to the second aspect of the present invention, the stroke conversion mechanism is rotatably mounted on a wall around a protruding portion of the stem 17, and a plurality of locking steps a1. A rotating cylinder 28 provided on the outer surface of the vertical moving member 4, and an engaging projection which comes into contact with any one of the levels of the locking steps a1 at a predetermined rotational position when the vertical moving member is pressed down. 29 and a pump according to claim 1.
[0008]
In addition, the pump according to the third aspect of the present invention is provided with locking means for locking the locking step portions a1 at corresponding positions below the engaging projections 29, and the locking means is provided on the outer surface of the rotary cylinder. 3. An engaging projection 32, a locking projection 33 for locking the engaging projection, and a temporary fixing projection 34 over which the engaging projection 32 can go over, at a position and at a predetermined position on the peripheral surface of the rotating cylinder facing wall. It was configured as a pump.
[0009]
A pump according to a fourth aspect of the present invention is configured as the pump according to any one of the second and third aspects, wherein a knob 30 projects from the outer surface of the rotary cylinder 28.
[0010]
In the pump according to the fifth aspect of the present invention, the flange-shaped top plate 8 extends inward from the upper end edge of the mounting cylinder 7 fitted to the outer periphery of the mouth and neck 6 of the container body B, and rises above the inner peripheral edge of the top plate 8. The mounting cylinder member 2 with the support cylinder 9 standing up, the cylinder 3 whose upper part is fitted in the support cylinder 9 and whose lower end is suspended in the container body B, and the annular piston 20 fitted on the inner circumference of the cylinder are lower. A vertically moving member 4 having a stem 17 linked to the outer periphery projecting downwardly in a state of being urged upwardly above the support cylinder 9, bending the upper portion of the stem 17 forward and fitting the ejection nozzle 21 to the tip thereof. And a pair of side plates 23 extending to both sides of the upper portion of the stem so as to be able to swing up and down by pivotally attaching the rear end to the upper end of the support plate 11 erected from the rear of the mounting cylinder member 2. A finger hook portion 24 is vertically provided from the front portion, and a pressing protrusion on the inner surface of the side plate 23 is provided. A trigger 5 having a lower surface 26 rotatably fitted to an upper end portion of the support cylinder 9 and a plurality of locking stages having different levels. A rotary cylinder 28 having a portion a1 on the upper surface and a knob 30 protruding from the outer surface, and an engaging projection 29 pressed down by pulling in the trigger is provided at each of the locking step portions a1. The pump is constituted so as to be in contact with any one of the levels.
[0011]
BEST MODE FOR CARRYING OUT 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 attached to 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 vertically moving member 4, and a trigger 5.
[0013]
The mounting cylinder member 2 has a flange-like top plate 8 extending inward from the upper end edge of the mounting cylinder 7 screwed to the outer periphery of the mouth and neck portion 6 of the container body B, and a support cylinder 9 above the inner peripheral edge of the top plate 8. And a flange 10 is protrudingly provided at an upper portion in the support cylinder 9. A pair of support plates 11 are erected from the rear upper surface of the top plate 8 and the rear surface of the support cylinder 9 obliquely rearward and upward, and the rear edges of the support plates 11 are connected to each other by the connection plate 12.
[0014]
The cylinder 3 has a bottomed cylindrical shape in which an upper outer periphery is fitted and fixed in the support cylinder 9, and a flange portion 13 protruding at a middle portion in the outer peripheral vertical direction and fitted to a lower surface of the top plate 8 is inserted through a packing 14. And presses against 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 vertically moving member 4 has a stem 17 protruding so as to be able to be pushed in an upwardly biased state from the inside of the cylinder 3, and communicates the ejection port 18 at the tip with the inside of the cylinder 3 via the stem 17. In the illustrated example, a coil spring 19 is interposed below and an annular piston 20 is slidably fitted in the cylinder 3 in the illustrated example. Is linked to the lower periphery of the stem 17. In addition, the upper part of the stem 17 protruded so as to be able to be pushed down above the support cylinder 9 is bent forward, the ejection nozzle 21 is fitted to the tip, and the ejection port 18 is opened at the tip. The ejection nozzle 21 includes a known discharge valve and a known spray mechanism.
[0016]
The trigger 5 is provided with a pair of side plates 23, each of which has a rear end inner surface pivotally attached to an upper end outer surface of each of the support plates 11 and extends vertically to both upper sides of the stem 17, and from a front portion of each side plate 23. A finger hook 24 is provided vertically. A connecting plate 25 is bridged between the rear edge and the rear upper edge of each side plate 23, and the lower surface thereof is abutted and locked on the upper surface of the connecting plate 12 between the support plates 11. The finger hook 24 has a top surface abutting against a lower surface of the stem 17 immediately after the jet nozzle 21 is fitted, and a rear surface extending rearward from both sides of the front plate, and an upper end integrally formed with the front lower surface of each of the side plates 23. It has a U-shaped cross section composed of connected horizontal plates.
[0017]
The pressing projections 26 projecting from the inner surfaces of the side plates 23 are linked to the pressing projections 27 projecting from the outer surface of the stem 17 so as to be able to be pushed down. In the illustrated example, the pressed projection 27 has a horizontal columnar shape projecting from both upper ends of the vertical portion of the stem 17, and the pressing projection 26 projects from a lower part of the inner surface of each side plate 23 in the front-rear direction. It has a horizontal plate shape.
[0018]
Then, when the trigger 5 is pulled by putting a finger on the finger hook portion 24, the pressing protrusion 26 pushes down the pressed protrusion 27, and thus pushes down the vertical moving member 4. As a result, the liquid in the cylinder 3 is pressurized, and the pressurized liquid is opened from the discharge valve and spouted from the spout 18. When the pressing of the trigger is released, the vertically moving member 4 is raised by the upward biasing force of the coil spring 19, the suction valve 15 is opened, and the liquid in the container B is introduced into the cylinder 3. At this time, the pressed projection 27 pushes up the pressing projection 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 stroll converting mechanism, it is possible to change the pressing width of the up-and-down moving member 4 in a plurality of steps, so that the amount of liquid ejected at one time can be changed.
[0020]
The stroke conversion mechanism according to the present invention includes a rotary cylinder 28 rotatably mounted on a wall around a protruding portion of the stem 17 and having a plurality of locking steps a1. An engaging projection 29 is provided on the outer surface of the up-down moving member 4 and comes into contact with any one of the locking steps a1 at a predetermined rotation position when the up-down moving member 4 is pressed down. I have.
[0021]
The number of the locking step portions having different levels may be plural, and there is no particular limitation as long as the laying is possible, and the number can be appropriately selected as needed. However, this does not apply to the case where one of the levels of the locking step comes into contact with the engaging projection 29 in a state where the vertical moving member 4 cannot be pushed down. 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 projection 29, it is necessary to provide two or more types of different level locking steps. Further, the number of locking steps may be one or more at the same level, and can be appropriately selected depending on the number of the engaging projections 29 and the like. Therefore, whether the number of the engagement projections 29 is single or plural, it is sufficient to select the engagement projections 29 as appropriate according to the configuration of the locking steps a1.
[0022]
In the illustrated example, the engaging projection 29 is also used as the pressed projection 27, that is, a pair of engaging projections 29 is provided on both sides of the upper portion of the vertical portion of the stem 17. The rotating cylinder 28 is rotatably fitted in the supporting cylinder 9 as a wall around the protruding portion of the stem with its lower surface in contact with the upper surface of the flange 10. As shown in FIG. 4, a pair of locking step portions a1, a2 and a3 of three levels are provided on the upper surface of the rotary cylinder 28 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 in. Thus, the stem 17 is prevented from being pushed. When the rotary cylinder 28 is rotated by 60 degrees, as shown in FIG. 5B, the second highest locking step portions a2 are located at positions facing the respective engaging projections 29, and can be pushed down there. It becomes. When it is further rotated by 60 degrees, the lowest locking step a3 is located at a position facing each engaging projection 29, as shown in FIG.
[0024]
The rotary cylinder 28 may be provided with a knob 30 as in the illustrated example. Various shapes of the knob 30 can be adopted, but in the illustrated example, a plate-shaped knob in which the inner edge is rotatably fitted to the outer surface of the support cylinder 9 via a rod-shaped connecting piece 31 protruding from the outer periphery of the rotary cylinder 28. 30 are provided.
[0025]
The rotating cylinder 28 may be provided with locking means for locking the locking step portions a1... At corresponding positions below the engaging projections 29. The locking means is configured such that the engaging projection 32 and the locking projection 33 and the engaging projection 32 for locking the engaging projection 32 can move over a predetermined position on the outer surface of the rotary cylinder 28 and a predetermined position on the peripheral surface of the wall facing the rotary cylinder. The temporary fixing projections 34 are provided so as to protrude. The locking projection 33 regulates the area so that the rotating cylinder 28 can rotate by a required angle, and the temporary fixing projection 34 is provided at a required locking point in the area according to the number of locking steps. In addition, the engagement projection 32 relatively rotates between the two engagement projections 33, and is temporarily locked with the temporary fixing projection 34, and the rotation projection 32 can move over when a stronger force is applied. Things.
In this embodiment, as shown in FIG. 4, a locking projection 33 is provided at the front of the upper end of the inner periphery of the support cylinder 9 as a peripheral surface of the wall facing the rotating cylinder, and about 120 from the locking projection 33. The other locking projection 33 is protruded at a right position with an interval of degrees. In addition, a temporary fixing projection 34 is protruded from an intermediate portion of each locking projection 33 at a position separated by about 60 degrees. On the other hand, on the outer surface of the rotary cylinder 28, an engagement projection 32 is provided so as to protrude at a position in contact with the one engagement projection 33. In this state, the highest engagement step is provided below each engagement projection 29. The configuration is such that the portion a1 is located.
[0027]
The engagement projection 32 is configured to be rotatable between the locking projections 33, and when the engagement projection 32 comes into contact with the temporary fixing projection 34, as shown in FIG. The second highest locking step a2 is located at a position opposed to each engaging projection 29, and it is possible to judge that the position is the predetermined locking position by the touch of the hand, and if the forcible rotation is further performed, the locking step is performed. The mating projection 32 gets over the temporary fixing projection 34. Further, the engagement projection 32 is pivotally locked to the position of the other engagement projection 33, and at this time, as shown in the state of FIG. The stop portion a3 is located.
[0028]
【The invention's effect】
As described above, the pump according to the present invention can produce jets of different jetting amounts by adopting the above-described configuration.
[0029]
Further, in the configuration in which the rotary cylinder 28 and the engagement projection 29 constitute a stroke conversion mechanism, 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, the rotating cylinder has an advantage that it does not interfere.
[0030]
Further, in a device provided with a locking means for locking each locking step a1 at a position corresponding to the lower portion of the engaging projection 29, the ejection amount can be switched by the touch of the hand, so that it is extremely useful in use. It is convenient.
[0031]
Further, in the case where the knob 30 protrudes from the outer surface of the rotary cylinder 28, the rotation of the rotary cylinder is more easily performed, and as a result, the ejection amount is more easily switched.
[0032]
In the pump according to the fifth aspect of the present invention, the liquid can be ejected by pulling the trigger 5, so that the ejection operation can be easily performed. It is possible to easily switch the ejection amount by holding the knob 30.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a vertical sectional view of the embodiment.
FIG. 3 is an enlarged vertical sectional view of a main part of the embodiment.
FIG. 4 is an explanatory diagram illustrating a rotary cylinder portion of the embodiment.
FIG. 5 is an explanatory diagram for explaining the operation of the embodiment.
[Explanation of symbols]
2 ... mounting cylinder member, 3 ... cylinder, 4 ... vertical moving member, 5 ... trigger,
6 ... mouth and neck, 7 ... mounting cylinder, 8 ... top plate, 9 ... support cylinder, 11 ... support plate,
17 ... Stem, 18 ... Outlet, 21 ... Outlet nozzle, 23 ... Side plate, 24 ... Finger part,
26: pressing projection, 28: rotating cylinder, 29: engagement projection, 30: knob, 32: engagement projection,
33: locking projection, 34: temporary fixing projection, B: container body, a1, a2, a3: locking step

Claims (5)

A vertically moving member (4) having a stem (17) protruding from the inside of the cylinder (3) so as to be able to be pushed in an upwardly biased state, and having a tip end outlet (18) and the inside of the cylinder (3) communicated through the stem. In the pump configured to suck up the liquid in the container body B mounted by the up and down movement and to blow out from the outlet port 18, a stroke converting mechanism for changing the pushing width of the stem 17 is provided. pump. The above-mentioned stroke conversion mechanism is rotatably mounted on a wall around a protruding portion of the stem 17, and has a plurality of locking steps a1... 4. An engaging projection 29 which is provided on the outer surface and which comes into contact with any one of the locking steps a1 at a predetermined rotational position when the vertically moving member is pressed down. The described pump. Locking means for locking the locking step portions a1 at corresponding positions below the engaging projections 29 are provided, and the locking means includes a predetermined position on the outer surface of the rotary cylinder 28 and a predetermined position on the peripheral surface of the wall facing the rotary cylinder. 3. The pump according to claim 2, further comprising an engaging projection and a temporary fixing projection on which the engaging projection and the engaging projection are engaged. 4. The pump according to claim 2, wherein a knob 30 protrudes from an outer surface of the rotary cylinder 28. 5. A mounting tube member 2 having a flange-like top plate 8 extending inward from an upper end edge of a mounting tube 7 fitted on the outer periphery of the mouth and neck portion 6 of the container body B, and having a support tube 9 standing above the inner peripheral edge of the top plate 8. And a cylinder 3 having an upper part fitted into the support cylinder 9 and a lower end hanging down in the container body B, and a stem 17 having an annular piston 20 fitted on the cylinder inner circumference linked to the lower outer circumference. 9 A vertically movable member 4 having a vertically upwardly biased state and being bent downward, and an upper part of the stem 17 bent forward and an ejection nozzle 21 fitted to the tip of the stem 17, and an upright moving member 4 standing from a rear portion of the mounting cylinder member 2. 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 of each side plate 23. The pressing projection 26 on the inner surface of the side plate 23 is engaged with the engaging projection on the outer surface of the stem 17. A lower portion rotatably fitted to the upper end portion of the support cylinder 9 and a plurality of locking step portions a1... Having different levels on the upper surface; , A rotary cylinder 28 having a knob 30 protruding from the outer surface thereof, so that the engagement projection 29 pressed down by pulling in the trigger comes into contact with any one of the levels of the locking steps a1. A pump characterized by comprising.

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