JP6170411B2 - Liquid container mounting pump - Google Patents

Description

  The present invention relates to a liquid container mounting pump.

  As this kind of pump, for example, the stem is erected through a cylinder for mounting in the mouth and neck of the container body, and a flange-like portion protruding inward from the inner surface of the annular piston that can slide in the cylinder. An operation member having a discharge head attached to the upper end of the stem, a check valve member having a valve plate in contact with a valve seat provided at the bottom of the cylinder to form a check valve, the flange-shaped portion and the check valve There is known a type including a coil spring interposed between members and configured to suck up the liquid in the container body by the vertical movement of the operating member and discharge the liquid from the discharge port of the discharge head ( Patent Document 1).

JP 2001-315822 A

  In the above prior art pump, the valve plate is stuck to the valve seat at the lower end of the cylinder for a long time when not in use, so that the valve plate is easily attached to the valve seat when the pump is used later. The valve function may not be exhibited.

  The present invention is of a type in which the lower end portion of the stem is formed into a double cylinder shape composed of an outer cylinder portion and an inner cylinder portion, and an annular piston is provided between the piston guide attached to the lower end of the inner cylinder portion and the outer cylinder portion. In the liquid container mounting pump, the rotational force due to the rotation operation of the discharge cap is transmitted to the check valve member via the piston guide, and the valve body of the check valve for sucking the liquid into the cylinder and the valve seat The object is to provide a device that can eliminate the sticking state.

The first means has a suction port m on the lower end side of the peripheral wall portion 21, and a cylinder B that is raised around the suction port m to serve as the first check valve seat 23,
A check valve member D having a first check valve body 38 disposed in the lower portion of the peripheral wall 21 and forming a first check valve V1 together with the first check valve seat 23;
An actuating member E mounted on the cylinder B so as to be vertically movable in an upwardly biased state,
This actuating member E is
The lower end portion is inserted into the cylinder B so as to be vertically movable in an upwardly biased state. The lower end portion is inserted into the outer cylinder portion 41 of the lower end opening, and the lower end of the outer cylinder portion 41 from above the outer cylinder portion 41. A stem E1 formed by the inner cylinder portion 40 hanging downward,
With a nozzle 74 that has a double cylindrical small-diameter connecting cylinder portion 70A and a large-diameter connecting cylinder portion 70B that are suspended from the inside of the back surface, and the small-diameter connecting cylinder portion 70A is non-rotatably connected to the upper end of the stem E1. Discharge head E4,
A piston guide E2 that projects an annular second check valve seat 51 outwardly from a coupling base 50 that is non-rotatably coupled to the lower end of the inner cylinder 40;
An annular piston E3 inserted between the second check valve seat 51 and the outer cylinder portion 41 and sliding on the inner surface of the cylinder B;
Including
A coil spring F is interposed between the piston guide E2 and the check valve member D as an upward biasing means for the operating member E, and a second portion is formed by the lower portion of the annular piston E3 and the second check valve seat 51. A check valve V2 is formed, and the screw cylinder 31 is extended upward from the cylinder B,
When in use, the vertical movement of the actuating member E causes the liquid to be sucked into the cylinder B from the suction port m via the first check valve V1, and the liquid in the cylinder B passes through the second check valve V2. And discharging from the nozzle 74,
A liquid container mounting pump configured to be able to lower the discharge head E4 to the lowest position by screwing the large-diameter connecting cylinder portion 70B of the discharge head E4 into the screw cylinder 31 when not in use,
By locking the upper 82 side of the coil spring F to the lower surface of the piston guide E2 and the lower 83 side of the coil spring F to the check valve member D, the large-diameter connecting cylinder portion 70B is locked. When rotating and unscrewing from the screw cylinder 31, the rotational force is transmitted to the check valve member D via the discharge head E4, the stem E1, the piston guide E2, and the coil spring F. The first check valve body 38 is configured to rotate with respect to the first check valve seat 23.

  As shown in FIG. 1, the liquid container mounting pump of this means is formed by forming the lower end portion of the stem E1 connected to the ejection head E4 with an inner cylinder portion 40 and a short outer cylinder portion 41 that are long in the vertical direction. An annular piston E3 is inserted between the cylinder portion 41 and the piston guide E2 connected to the lower end portion of the inner cylinder portion 40, and a first check valve is in contact with the first check valve seat 23 formed at the lower end portion of the cylinder B. A check valve member D having a valve body 38 is disposed in the cylinder B, a coil spring F is interposed between the check valve member D and the piston guide E2, and a screw cylinder 31 standing from the cylinder B is attached to the screw cylinder 31. On the other hand, it has a basic configuration in which the ejection head E4 can be screwed when not in use. Then, the connecting portion between the discharge head E4 and the stem E1, the connecting portion between the stem E1 and the piston guide E2 are formed so as not to rotate, and the upper 82 side of the coil spring F is placed on the back surface of the piston guide E2, and the coil By locking the lower side of the spring F to the check valve member D, the rotational force is transmitted to the check valve member D when the discharge head E4 is screwed up with respect to the screw tube 31. Provide.

    The “lowermost position” means a state where the discharge head E4 is lowered most when the discharge head E4 is assembled to the screw cylinder 31, and is distinguished from a lower limit position of a stroke in a normal use state. In the illustrated example, the “screw cylinder” is formed as a part of a member separate from the cylinder B. However, the peripheral wall portion of the cylinder may be extended upward, and the extended portion may be a screw cylinder.

The second means includes the first means, and the bottom surface of the piston guide E2 is formed with a ratchet r including a plurality of locking projections 56 having a locking surface 56a directed to one circumferential side. The end surface Se on the upper 82 side of the coil spring F is locked to one of the locking projections 56.

In this means, as shown in FIG. 4, a ratchet r including a plurality of locking projections 56 is formed on the outer peripheral portion of the lower surface of the piston guide E2. Thereby, it becomes easy to lock the end surface of the coil spring to the locking surface 56 a of the locking projection 56.
By using a hard material (particularly hard synthetic resin) for the piston guide, the strength of the ratchet is increased, and a more reliable transmission of rotational force can be expected. For example, in a configuration in which a coil spring is interposed between a flange-like portion between an annular piston and a stem and a check valve member as in Patent Document 1, if the ratchet of the flange-like portion is formed, the annular piston When the flange, the flange and the stem are integrally formed of synthetic resin, only the soft material can be used for the piston seal, so the flange is also made of a soft material, increasing the strength of the ratchet. It is difficult.

The third means includes the second means, and the check valve member D is a ring inserted rotatably between the first check valve seat 23 and the lower end portion of the peripheral wall 21. The first check valve body 38 is attached to the tip of a plurality of elastic pieces 37 protruding from the inner surface of the ring cylinder 33, and inward from the upper end of the ring cylinder 33. The projecting flange 34 is connected to the lower end of the outer surface of the vertical pedestal 35,
The lower portion 83 side of the coil spring F is locked to the locking portion 39 provided on the upper surface of the flange portion 34, and
The piston guide E2 is provided so as to abut on the top surface 35a of the pedestal 35 when the operating member E is lowered to the lowest position.

  The latching projection 56 of the ratchet r receives the reaction force from the end surface of the coil spring F while transmitting the rotational force generated by screwing down the discharge head E4 to the coil spring F. If the moment to rotate the discharge head E4 is too strong, excessive force is applied to the locking projection 56, the locking projection 56 is wrinkled, or the end surface of the coil spring comes off from the locking surface 56a of the locking projection 56. There is a risk of Therefore, in this means, the top surface 35a of the pedestal 35 is brought into contact with the lower surface of the piston guide E2 when the operating member E is lowered to the lowest position.

The fourth means includes any one of the first means to the third means, and the cylinder B has an open air introduction hole 24, which is an operating member in use. In a state where E is at the highest position, the annular piston E3 is closed.

  In this means, as shown in FIG. 1, the outside air introduction hole 24 of the cylinder B is closed by the annular piston E3 in a state where the operating member E in use is at the highest position. Thereby, even if the container equipped with the pump of the present invention is tilted during use, liquid leakage does not occur from the outside air introduction hole.

According to the first aspect of the invention, when the discharge head E4 is screwed up with respect to the screw cylinder 31, the rotational force is exerted on the check valve member via the stem E1, the piston guide E2, and the coil spring F. Since it is provided so as to be transmitted to D, the phenomenon that the first check valve body 38 of the check valve member D sticks to the first check valve seat 23 can be eliminated.
According to the invention relating to the second means, since the ratchet r comprising the plurality of locking projections 56 is formed on the outer peripheral portion of the lower surface of the piston guide E2, the coil spring is applied to the locking surface 56a of any locking projection 56. The end face of F only needs to be locked, and the assembly work of the pump is easy.
According to the third aspect of the invention, when the discharge head E4 is screwed into the screw cylinder 31 and the operation member E is lowered to the lowest position, the top surface 35a of the pedestal 35 is placed on the center of the lower surface of the piston guide E2. Since the portions are provided so as to contact each other, it is possible to prevent the locking projection 56 from being wrinkled by the momentum when the operating member E is screwed down to the lower limit position.
According to the fourth aspect of the invention, since the outside air introduction hole 24 of the cylinder B is closed by the annular piston E3 in a state where the operating member E at the time of use is at the highest position, the pump of the present invention is mounted during use. Even if the container is tilted, liquid leakage does not occur from the outside air introduction hole.

It is a longitudinal cross-sectional view of the liquid container mounting pump according to the first embodiment of the present invention. It is an enlarged view of the principal part (part shown by Y) of the pump of FIG. It is a longitudinal cross-sectional view of one component (piston guide) of the pump of FIG. FIG. 4 is a bottom view of the component of FIG. 3. It is a longitudinal cross-sectional view of the other components (check valve member) of the pump of FIG. It is a longitudinal cross-sectional view of the non-use state of the pump of FIG. FIG. 7 is an operation explanatory diagram when the pump in the state of FIG. 6 is viewed as VII-VII.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 7 show a first embodiment of the pump of the present invention. The pump 1 includes a mounting cap A, a cylinder B, an auxiliary cap C, a check valve member D, an operating member E, and a coil spring F. For convenience of explanation, the left side of FIG. 1 will be described as a front part, the right side as a rear part, the front side as a right part, and the back side as a left part.

  The mounting cap A is for fixing the pump 1 to the container body 100, and a flange-like top wall 11 is extended from the upper end of the peripheral wall portion 10 to be fitted to the outer periphery of the mouth neck portion 101 of the container body 100. .

  The cylinder B has a flange 20 that is placed on the mouth and neck portion 101 via a packing p so as to protrude from the outer peripheral upper portion of the peripheral wall portion 21, and a bottom wall portion 22 that is open at the center from the lower end edge of the peripheral wall portion 21. A cylindrical first check valve seat 23 is erected from the periphery of the central opening of the bottom wall portion 22. The peripheral wall portion 21 further includes a first peripheral wall portion 21a at the lower end, a second peripheral wall portion 21b having a diameter increased from the upper end of the first peripheral wall portion 21a through a step, and a further expansion from the upper end of the second peripheral wall portion 21b through the stepped portion. A third peripheral wall portion 21c having a diameter and a fourth peripheral wall portion 21d having a diameter further increased from the upper end of the third peripheral wall portion 21c through a stepped portion, and an outside air introduction hole 24 is formed above the second peripheral wall portion 21b. Has been drilled. In addition, a pipe fitting cylinder portion 25 is integrally suspended from the bottom center portion of the bottom wall portion 22, and the upper end of the suction pipe 26 is fitted into the pipe fitting cylinder portion 25, and the lower end thereof is placed inside the container body 100. It hangs on the lower end.

  The auxiliary cap C is fitted to the upper end portion of the cylinder B, and the outer ring cylindrical portion fitted to the outer peripheral upper end portion of the peripheral wall portion 21 of the cylinder B so as to be prevented from coming out upward, and the peripheral wall portion 21. A mounting base 30 is connected to the inner peripheral upper end portion of the mounting base 30 by a top plate with an inner ring cylindrical portion fitted to prevent rotation, and the screw cylinder 31 is erected from the inner peripheral edge of the top base of the mounting base 30. Yes.

  The check valve member D is attached to the lower end in the cylinder B. The check valve member D has a flange portion 34 extending from the upper end of the ring cylinder portion 33 loosely fitted (freely fitted) to the inner peripheral lower end portion of the peripheral wall portion 21 of the cylinder B, and a pedestal is interposed via the flange portion 34. 35 is erected.

The pedestal 35 has a function as a support for a piston guide described later, and may have any structure as long as the function is exhibited. In the illustrated example, as shown in FIG. 5, the pedestal 35 has a cylindrical shape with a flat top surface 35 a. A plurality of vertical ribs 35b are provided on the outer surface of the lower half of the cylindrical wall portion, and a reinforcing wall portion 35c that is continuous with the top wall portion and the cylindrical wall portion is provided therein.

For example, as shown in FIG. 1, a locking portion 39 for locking the coil spring F is provided on the upper surface of the flange portion 34. Any structure may be used for the locking portion, and for example, the same ratchet structure as a locking protrusion described later can be used.

The ring cylinder portion 33 is rotatably inserted between the first check valve seat 23 and the inner surface of the peripheral wall portion 21 of the cylinder B. As a preferred embodiment, the outer surface of the ring tube portion 33 is in contact with an undercut projecting from the inner periphery of the peripheral wall portion 21 of the cylinder B. In addition, a plurality of circumferential fluid passages may be opened in the upper half of the ring cylinder 33.

  Further, a plurality of elastic pieces 37 are provided inwardly projecting from the inner periphery of the ring cylinder portion 33 in the circumferential direction, and are pressed onto the first check valve seat 23 via the elastic pieces 37. The first check valve body 38 is supported. The first check valve body 38 and the first check valve seat 23 form a first check valve V1.

  The actuating member E is assembled to the cylinder B so as to be vertically movable in an upwardly biased state, and as shown in FIG. 1, the stem E1, the piston guide E2, the annular piston E3, the discharge head E4, And an outside air introduction hole opening / closing member E5.

  The stem E1 has a discharge head E4 non-rotatably fitted to the upper end thereof, and a lower end portion thereof is inserted into the cylinder B so as to move up and down in an upwardly biased state. It has a cylindrical shape equipped with a piston E3 and serves as a conduit for introducing the liquid in the cylinder B into the discharge head E4.

  In this specification, “relative vertical movement” means that both the stem and the annular piston are lifted, but the rising width of the other of the stem and the annular piston is larger than that of the other, and therefore one of them is used as a reference. The other moves to a higher position, and both the stem and the annular piston descend, but the other descending width is larger than the descending width of one of the stem and the annular piston, so the other is lower than the other It shall mean moving to a position.

  As shown in FIG. 2, the stem E1 of the first embodiment protrudes downward from a cylindrical stem main body portion 42 in a double cylindrical lower end formed by an outer cylinder portion 41 and an inner cylinder portion 40. .

  The outer cylinder portion 41 is suspended from the lower end of the stem main body portion 42 via an outward flange portion 43. The outward flange portion 43 is an outward flange portion 43 that inclines and descends outward from the lower end portion of the stem main body portion 42.

  The inner cylinder part 40 is suspended downward from the lower end of the stem body part 42 via the inward flange part 44 below the lower end of the outer cylinder part 41. In addition, a fluid passage hole 45 having a wide vertical direction extending from the inward flange portion 44 to the lower side of the inner cylinder portion 40 is formed. Moreover, the inner cylinder part 40 may be circular or polygonal. The upper half part of the inner cylinder part 40 is formed in a tapered part 40a whose lower end is tapered inwardly, and the lower half part of the inner cylinder part 40 is formed in a vertical cylinder part 40b. A pair of vertically long liquid passage holes 45 extending from the inward flange portion 44 to the tapered portion 40a are formed at opposing positions. Furthermore, a first locking rib 48 is attached to the inner surface of the inner cylinder portion 40. The liquid passage holes 45 are not limited to a pair, and may be one place or three places or more.

  The piston guide E2 is a member that is attached to the inner cylinder portion 40 of the stem E1 and restricts a range in which an annular piston E3 (described later) of the stem E1 moves. The piston guide E2 has a connection base 50 and a second check valve seat 51 for fitting to the stem E1. Since the piston guide is separate from the annular piston, it can be formed of a material (synthetic resin) that is harder than the material normally used for the piston.

  As shown in FIG. 2, the connecting base portion 50 is formed by a fitting tube portion 50a, a bottom plate 50b that closes the lower surface of the fitting tube portion 50a, and a rod-like protrusion 50c that stands from the center portion of the bottom plate 50b. ing. Although the rod-shaped protrusion 50c in the illustrated example is solid, it may be formed in a hollow cylindrical shape, for example. And the said inner cylinder part 40 is fitted in the annular groove part g formed between the fitting cylinder part 50a and the rod-shaped protrusion 50c so that rotation is impossible. A second locking rib 54 that locks with the first locking rib 48 is provided on the outer surface of the rod-shaped protrusion 50c, and the inner cylinder portion 40 is prevented from coming off from the connecting base 50 by these both locking ribs. Means. However, the structure of the locking means can be changed as appropriate.

  The second check valve seat 51 protrudes from the outer periphery of the fitting tube portion 50a to the lower position of the outer tube portion 41. The illustrated second check valve seat 51 protrudes integrally from the outer periphery of the fitting tube portion 50a, the base end portion descends outward, the lower surface of the horizontal outer peripheral portion is an annular flat surface 55, and the outer peripheral edge portion. Standing wall is set up in Further, in the first embodiment, the guide tube portion 52 is integrally suspended below the lower peripheral edge portion of the second check valve seat 51, and a plurality of circumferential guide protrusions 53 project from the outer periphery of the guide tube portion 52. doing.

  As shown in FIG. 4 which is a bottom view of the piston guide, a plurality (six in the illustrated example) of locking projections 56 are suspended from the annular flat surface 55 at a constant interval. Each locking projection 56 has a locking surface 56a in the circumferential direction for locking with the end surface of the coil spring, and constitutes a ratchet r as a whole. As described above, the strength of the ratchet can be further increased by using a hard material as the piston guide.

  As shown in FIG. 1, the annular piston E <b> 3 has an H-shaped cross section in which a cylindrical inner sliding portion 60 and a cylindrical outer sliding portion 61 are connected to each other by an upper and lower intermediate portion connected by a connecting portion 62. It is formed in an annular shape. The internal sliding portion 60 constitutes the second check valve V2 with the second check valve seat 51. The internal slide portion 60 moves vertically away from the inner cylinder portion 40 of the stem E1, and the upper end portion is the outer cylinder portion 41. The inner periphery is slidably fitted. The external sliding portion 61 is slidably fitted to the inner periphery of the cylinder B. Therefore, the annular piston E3 has a stem between the position where the lower end portion of the internal sliding portion 60 is pressed against the second check valve seat 51 and the position where the upper surface of the connecting portion 62 is in contact with the lower surface of the outer cylinder portion 41. It is mounted so that it can move up and down relative to E1.

  The discharge head E4 hangs the small-diameter connecting cylinder 70A and the large-diameter connecting cylinder 70B from the center of the back surface of the top plate 71 in a double cylinder shape, and the outer peripheral wall 72 from the peripheral edge of the top plate 71, The nozzle 74 communicating with the small-diameter connecting cylinder portion 70 </ b> A protrudes forward, and the discharge port 75 is opened at the tip of the nozzle 74. Further, a screw thread is provided on the inner surface of the large-diameter connecting cylinder portion 70B. As shown in FIG. 3, when not in use, the operating member E is pushed down to screw the large-diameter connecting cylinder portion 70B into the screw cylinder 31 of the auxiliary cap C. The operation member E is configured to be locked in a depressed state.

  The outside air introduction hole opening / closing member E5 is mounted on the outer peripheral upper portion of the stem E1 so as to be movable up and down relative to the stem E1. The outside air introduction hole opening / closing member E5 includes a base tube portion 80 in which the upper end portion is slidably fitted to the outer periphery of the stem E1 with a gap that allows introduction of outside air. The stem E1 and the base tube In this structure, the liquid can be prevented from entering through the gap with the portion 80 as much as possible. Further, an open / close cylinder part 81 that opens and closes the outside air introduction hole 24 protrudes from the lower end of the base cylinder part 80. When the operating member E in use is at the highest position, as shown in FIG. 1, the open / close cylinder portion 81 is at the position above the outside air introduction hole 24. At this time, the outside air introduction hole 24 is closed by the annular piston E3. Even when the operating member E is pushed down to discharge the liquid, the open / close cylinder 81 is located above the outside air introduction hole 24. Although not shown, the downward stepped portion 76 of the upper portion of the small-diameter connecting tube portion 70A does not press the upper surface of the base tube portion 80 at the pushed-down position of the operating member E for discharging liquid. In addition, as shown in FIG. 6, the open / close cylinder portion 81 is configured to close the outside air introduction hole 24 when the operation member E is pushed down and locked.

  The coil spring F is interposed between the lower surface of the second check valve seat 51 and the flange portion 34 of the check valve member D, and always urges the stem E1 and thus the operating member E upward.

In the present invention, as shown in FIG. 7, the upper surface 82 of the coil spring F is attached to the locking surface 56 a of the locking projection 56 with the end surface Se on the upper 82 side of the locking projection 56 of the piston guide E 2. It is locked to hit. Under section 83 of the coil spring as well, which is engaged with the engaging portion 39 of the flange portion 34. The fixing force is provided so as to be larger than the frictional force between the ring cylinder portion 33 and the inner surface of the cylinder B when the operating member E is lowered to the lowest limit position. Accordingly, the rotational force when the discharge cap is screwed up is transmitted from the piston guide E2 to the check valve member D via the coil spring F.

  In the above configuration, when the pump is not used (for example, when shipped as a product), as shown in FIG. 6, the operating member E is pushed down so that the large-diameter connecting cylinder portion 70B of the discharge head E4 is screwed into the auxiliary cap C. It is screwed to the cylinder 31. As a result, the operating member E can be locked in the lowered state. At this time, the outside air introduction hole opening / closing member E <b> 5 is pushed down, and the opening / closing cylinder portion 81 closes the outside air introduction hole 24. Further, the pedestal 35 of the check valve member D abuts on the lower surface of the connection base 50.

  Next, when the pump is used, as shown by an arrow in FIG. 7, the discharge head E <b> 4 is rotated to unscrew the large-diameter connecting cylinder portion 70 </ b> B from the screw cylinder 31. At this time, the force for rotating the discharge head E4 is transmitted to the first check valve body 38 via the stem E1, the piston guide E2, the coil spring F, the ring cylinder portion 33, and the elastic piece 37, and the first check valve is provided. The valve body 38 rotates with respect to the first check valve seat 23. Thereby, the state in which the described first check valve body 38 and the first check valve seat 23 are adhered to each other is eliminated. Since the piston guide is separate from the cylindrical piston, a hard material can be used, and the rotational force can be transmitted more reliably via the ratchet r of the piston guide.

  Further, from the state of FIG. 1, when the discharge head E4 is pushed down, the liquid in the cylinder B is pressurized, and the annular piston E3 pushed up by the liquid pressure rises relative to the stem E1 to raise the second check valve V2. Is opened, and the pressurized liquid is introduced into the stem E <b> 1 through the second check valve V <b> 2 and the liquid passage hole 45, and then discharged from the discharge port 75 of the nozzle 74 to the outside.

  When the pressing of the discharge head E4 is released, the operating member E is raised by the upward biasing force of the coil spring F, and at this time, the annular piston E3 is lowered relative to the stem E1 due to the negative pressure in the cylinder B. The second check valve V2 is closed and the first check valve V1 is opened, so that the liquid in the container body 100 is introduced into the cylinder B through the suction pipe 26.

DESCRIPTION OF SYMBOLS 1 ... Pump A ... Mounting cap 10 ... Peripheral wall part, 11 ... Top wall B ... Cylinder 20 ... Flange, 21 ... Peripheral wall part, 21a ... 1st peripheral wall part, 21b ... 2nd peripheral wall part,
21c ... 3rd surrounding wall part, 21d ... 4th surrounding wall part, 22 ... Bottom wall part, 23 ... 1st non-return valve seat,
24 ... Outside air introduction hole, 25 ... Pipe fitting tube portion, 26 ... Suction pipe C ... Auxiliary cap 30 ... Mounting base, 31 ... Screw tube D ... Check valve member 33 ... Ring tube portion, 34 ... Flange portion 35 ... Pedestal 35a ... Top surface 35b ... Vertical rib 35c ... Auxiliary wall 37 ... Elastic piece 38 ... First check valve body 39 ... Locking part E ... Actuating member E1 ... Stem 40 ... Inner tube part 40a ... Tapered part, 40b ... Vertical cylindrical part, 41 ... Outer cylindrical part,
42 ... Stem body part, 43 ... Outward flange part, 44 ... Inward flange part,
45 ... liquid passage hole 48 ... first locking rib E2 ... piston guide 50 ... coupling base part, 50a ... fitting cylinder part, 50b ... bottom plate, 50c ... rod-shaped protrusion,
DESCRIPTION OF SYMBOLS 51 ... 2nd non-return valve seat, 52 ... Guide cylinder part, 53 ... Guide protrusion, 54 ... 2nd locking rib 55 ... Annular flat surface 56 ... Locking protrusion 56a ... Locking surface E3 ... Ring piston 60 ... Internal sliding Moving part 61 ... External sliding part 62 ... Connecting part E4 ... Discharge head 70A ... Small diameter connecting cylinder part 70B ... Large diameter connecting cylinder part 71 ... Top plate 72 ... Outer peripheral wall part
74 ... Nozzle, 75 ... Discharge port, 76 ... Downward stepped portion E5 ... Open air introduction hole opening / closing member
80 ... Base tube portion, 81 ... Opening / closing tube portion F ... Coil spring 82 ... Upper portion 83 ... Lower portion
V1 ... first check valve V2 ... second check valve g ... annular groove m ... suction port p ... packing r ... ratchet Se ... coil spring end face 100 ... container body 101 ... mouth neck

Claims (4)

A cylinder (B) having a suction port (m) on the lower end side of the peripheral wall portion (21), and projecting around the suction port (m) to form a first check valve seat (23);
A check valve member having a first check valve body (38) disposed in the lower portion of the peripheral wall portion (21) and forming the first check valve (V1) together with the first check valve seat (23). D) and
An actuating member (E) mounted on the cylinder (B) so as to be vertically movable in an upwardly biased state,
This actuating member (E)
The lower end portion is inserted into the cylinder (B) so as to be vertically movable in an upward biased state, and the lower end portion is inserted from the outer cylinder portion (41) of the lower end opening and the upper side of the outer cylinder portion (41). A stem (E1) formed of an inner cylinder part (40) hanging downward from the lower end of the outer cylinder part (41);
It has a double cylindrical small diameter connecting cylinder (70A) and a large diameter connecting cylinder (70B) hanging from the inside of the back surface, and the small diameter connecting cylinder (70A) is turned to the upper end of the stem (E1). A discharge head (E4) with a nozzle (74), which is impossibly connected;
A piston guide (E2) formed by projecting an annular second check valve seat (51) outwardly from a connecting base portion (50) that is non-rotatably connected to the lower end portion of the inner cylinder portion (40);
An annular piston (E3) inserted between the second check valve seat (51) and the outer cylinder portion (41) and sliding on the inner surface of the cylinder (B);
Including
A coil spring (F) is interposed between the piston guide (E2) and the check valve member (D) as an upward biasing means for the operating member (E), and the lower part of the annular piston (E3) (2) a second check valve (V2) is formed with the check valve seat (51), and the screw cylinder (31) is extended upward from the cylinder (B),
During use, the operating member (E) moves up and down to suck liquid from the suction port (m) into the cylinder (B) via the first check valve (V1), and to draw the liquid in the cylinder (B). And discharging from the nozzle (74) via the second check valve (V2),
When not in use, the liquid is configured such that the large-diameter connecting cylinder portion (70B) of the discharge head (E4) can be screwed into the screw cylinder (31) to lower the discharge head (E4) to the lowest position. A container mounting pump,
The upper (82) side of the coil spring (F), the lower surface of the piston guide (E2), also respectively engaging the lower portion (83) side to the check valve member (D) of the coil spring (F) By stopping, when the large-diameter connecting cylinder part (70B) is rotated and unscrewed from the screw cylinder (31), the rotational force is applied to the discharge head (E4), the stem (E1), and the piston guide (E2). And the coil spring (F) are transmitted to the check valve member (D), and the first check valve body (38) of the check valve member (D) is moved relative to the first check valve seat (23). A pump for mounting a liquid container, wherein the pump is configured to rotate.   On the lower surface of the piston guide (E2), there is formed a ratchet (r) composed of a plurality of locking projections (56) having a locking surface (56a) directed toward one side in the circumferential direction. The discharge pump for mounting a liquid container according to claim 1, wherein an end face (Se) on the upper part (82) side of the coil spring (F) is engaged with one of (56). The check valve member (D) has a ring cylinder portion (33) rotatably inserted between the first check valve seat (23) and a lower end portion of the peripheral wall portion (21). The first check valve body (38) is attached to the tip of a plurality of elastic pieces (37) protruding from the inner surface of the ring tube portion (33), and inward from the upper end of the ring tube portion (33). The flange portion (34) protruding to the bottom is connected to the lower end portion of the outer surface of the vertical bar-shaped base (35),
The flange engagement portion which is attached to the upper surface (34) to (39), as well as locking the lower portion (83) side of the coil spring (F),
The piston guide (E2) is provided so that the top surface (35a) of the pedestal (35) comes into contact with the operating member (E) when lowered to the lowest position. A discharge pump for mounting a liquid container as described. The cylinder (B) is provided with an outside air introduction hole (24). The outside air introduction hole (24) is in a state where the operating member (E) in use is at the highest position, and the annular piston (E3 The discharge pump for mounting a liquid container according to any one of claims 1 to 3, wherein the discharge pump is mounted so as to be closed by a liquid crystal.