Content discharge mechanism for pump-type container and pump-type product with content discharge mechanism

A content discharge mechanism for a container with a pump has a discharge outlet that is fixed in position. The device has an operation button and a cylindrical piston that move as one, as well as a ball valve that rests on a seat. The ball valve opens as the cylindrical piston retracts after an actuation to allow more fluid into the upstream passage chamber. A downstream passage with a valve for dispensation fluidly communicates with the upstream passage through a hole. As the cylindrical piston and its seal slide over the hole, the discharge from the downstream passage stops.

TECHNICAL FIELD

The present invention relates to a content discharge mechanism of a pump type container and more particularly, to a content discharge mechanism capable of preventing the position of a content discharge outlet from moving in response to an operation part upon setting operation of a discharge mode of a pump type product, and of making sharp a content discharge starting operation and a content discharge finishing operation by making the mechanism one where a discharge valve on the side of the discharge outlet is surely changed over from an open state (=discharge mode) up to that time to a closed state (=discharge finish mode) when a content discharge outlet portion is settled in the form of a fixed member not moving even in actuation of an operation part, a pressure storage type is used for the discharge valve, and the operation section moves by a predetermined stroke following a setting operation of the content to the discharge mode.

The content discharge mechanism of the present invention is used as a pump mechanism for various contents described later including nasal spray.

The “pump type” used in the present specification is a system where a volume of a content containing space is reduced by pressing, for example, an operation part of a container (such as a peripheral surface) by a user, and the contents therein are discharged to an external space, the idea including a push-out type and a tube type.

BACKGROUND OF THE INVENTION

There is known a prior art content discharge mechanism as a content discharge mechanism where a discharge outlet of the contents accommodated in a pump type container is provided on another fixing member different from the operation part in Japanese Patent No. 3177695. The following reference numbers with [ ] indicate those in the present reference.

In the '695 patent, a pressure body [15], a sealing body [14], and a large piston [23] are integrated, where once a user pushes down the pressure body, the operation part, the large piston is also moved downward.

Hereby, there is boosted the pressure of chemical in a space [B] between the large piston [23] and an elastic tube [22e] as the suction valve that blocks a transparent hole [22c1] in the small piston [22] relatively movable with respect to the large piston.

As the pressing-down operation of the pressure body [15] is performed several times to permit chemical pressure in the space [B] to rise to a predetermined value, the small piston [22] is pushed down by the pressure, resulting in conical-shaped step part [23c1] etc. a contact part (discharge valve) between both the pistons being separated. Hereby, the chemical in the space [B] is injected to a diseased part from the nozzle hole [16a1] of the nozzle [16] after passage through the separation part, shaft hole [23c], space [D].

The nozzle [16] is fixed to an adapter [13] integral with the container body [11] and so is prevented from moving even upon the pushing-down operation of the pressure body [15].

The content discharge mechanism of the pump type container described above is configured in such a way that the nozzle [16] equipped with the nozzle hole [16a1] is another member independent from the pressure body [15] and the nozzle is prevented from moving downward even upon the operation of the pressure body. This is user-friendly.

In contrast, in addition to the large piston [23] interlocking with the pressure body [15], there is provided the small piston [22] relatively vertically movable with respect to the former, presenting an action of the discharge valve by the contact and separation between these pistons. Further, the transparent hole [22c1] of the small piston [22] and an elastic tube [22e] blocking the transparent hole [22c1] act as the suction valve.

The discharge valve in the discharge mode is closed when the chemical in the space [B] is injected from the nozzle hole [16a1] to permit the pressure of the chemical in the space to be gradually reduced to a threshold or lower, and the operation changes to the discharge finishing mode. More specifically, following the reduction of the chemical pressure in the space the small piston [22] returns upward to close the shaft hole [23c] of the large piston [23], preventing the chemical from being injected.

The foregoing content discharge mechanism suffers from the problem that not only the suction valve but also the discharge valve are formed with the large piston [23] and the small piston [22] provided on the vertical upstream passage i.e. the downstream passage up to the nozzle hole [16a1] extending to the upstream passage does not include the valve member so that the entire structure is complicated and a flow of the chemical is not smooth.

Further, pressure of the chemical in the space [B] in the discharge mode is gradually reduced, so that injection finishing operation of the chemical (transition operation from the discharge mode to the discharge finishing mode) lacks sharpness.

OBJECTS OF THE INVENTION

It is an object of the present invention to make a pump structure simple and make smooth a flow of the contents from the suction valve to the discharge valve by providing the discharge valve for the contents not on the upstream passage formed between the piston and the suction valve interlocking with the operation part but on the downstream passage interlocking with the upstream passage and leading to a fixed type content discharge outlet (not interlocking with the operation part).

It is another object of the present invention to make sharp the operation itself of starting and finishing discharge of the contents by constructing the discharge valve of the downstream passage as a pressure storage type, and by constructing the discharge valve such that it (it has been an open state of the discharge mode by the movement of the operation part up to that time) is instantaneously closed by making use of quick reduction of the content pressure with respect to the discharge valve in the stage where a user moves the operation part by a predetermined stroke.

It is further another object of the present invention to suppress performance deterioration of mechanism itself and a change in properties of the contents accompanying a contact between a metal part, a component of the content discharge mechanism by disposing a first elastic member for energizing the operation part and the piston integral with the former to a stationary mode position and a second elastic member for energizing the discharge valve to a closed state outside the passage for the contents; constructing the suction valve using a synthetic resin; and eliminating a chance where the metal part of the component of the content discharge mechanism and the contents make contact with each other.

SUMMARY OF THE INVENTION

These and other objects are obtained by the content discharge mechanism of the present invention.

(1) Broadly, the present invention is designed as a content discharge mechanism of a pump type container and comprises:

1. an operation part (e.g., operation button1,41, operation lever21described later), which is an operation object for discharging the contents accommodated in the pump type container from a discharge outlet (e.g., holes8b,57a,71adescribed later) to external space;

3. a suction valve (e.g., annular reception surface3cand spherical body5annular reception surface27aand spherical body5, annular reception surface51cand spherical body5, and annular reception surface81cand semi-spherical part84c) actuated in response to the movement of the piston;

4. an upstream side passage (e.g., part of upstream passage A described later) formed between said piston and said suction valve;

5. a downstream passage (e.g., downstream passage B described later) reaching the discharge outlet from a communication part (e.g., hole3f,23k,31k,44k,51h, and81gdescribed later) with the upstream side passage;

7. a discharge outlet setting member (e.g., lateral nozzle3e, lateral nozzle member24,56,82, longitudinal nozzle member32,45described later) integrated with an opening part cap (e.g., screw cap3,23,31,44,51,81described later) of the container for setting the discharge outlet in the state where it does not move even at the time of the actuation of the operation part.

(2). In (1), the discharge valve is a pressure storage type one.

(3). In (1) and (2), the piston (e.g., sheath-shaped piston2,22,42described later) is provided in a cylinder (e.g., inside cylindrical part3a,51a,81a, rear side lateral cylindrical part23b, intermediate sheath-shaped part32b,44b) including in its peripheral surface part a transition hole (e.g., hole3f,51h,81g,23d,31d,44ddescribed later) from a discharge mode, where said discharge valve is opened to a discharge finishing mode where the discharge valve returns to a closed state and a seal action part (e.g., sealing action part2b,22b,42bdescribed later) of the piston advances together with the operation part from its stationary mode position via discharge mode position to the hole whereby the downstream side passage is also communicated with a space region (e.g., passage outside space region E described later) other than the upstream side passage to reduce the pressure of the contents acting to the discharge valve, resulting in the operation being transferred from the discharge mode till then to the discharge finishing mode.
(4). In (3), the transition hole is a communication hole (e.g., hole3f,51h,81gdescribed later) located between the upstream passage and the downstream passage.
(5). In (3), the transition hole is a communication hole (e.g., hole23d,31d, and44ddescribed later) located between the cylinder (e.g., rear side lateral cylindrical part23b, and intermediate sheath-shaped part32band44bdescribed later) and a suction valve side space region e.g., longitudinal cylindrical part23a, lower longitudinal cylindrical part31a,44adescribed later) provided upstream thereof
(6). In (1) to (5), the upstream passage comprises a space region corresponding to a longitudinal direction of a container body (e.g., container body12described later) and the downstream passage comprises corresponding to a lateral direction of a container body.
(7). In (1) to (5), the upstream passage and the downstream passage comprise a space region corresponding to a longitudinal direction of a container body.
(8). In (1) to (7), a first elastic member (e.g., coil spring43,53described later) for energizing the piston to a stationary mode position and a second elastic member (e.g., coil spring48,59described later) for energizing the discharge valve to a closed state are disposed outside the upstream passage and the downstream passage
(9) In (1) to (8), the suction valve consists of a movable valve part (e.g., semispherical part84cdescribed later) equipped with an elastic member entirely made of a synthetic resin for energizing the suction valve to a closed state.

A pump type product equipped with the content discharge mechanism described above and accommodating the contents are objects of the present invention.

EFFECT OF THE INVENTION

In accordance with the present invention, the discharge valve of a pump type product is provided on the downstream passage communicated with the upstream passage to extend to the fixed type content discharge outlet, not on the upstream passage located between the suction valve and the piston interlocking with the operation part, so that the content discharge outlet is maintained at the stationary mode position before the operation even when the operation part is moved upon setting operation to the discharge mode, resulting in a convenient mechanism making the pump mechanism itself simple for a smooth flow of the contents therein.

The mechanism is configured such that the discharge valve of the downstream passage is made a pressure storage type, and when the operation part is moved by a predetermined stroke i.e. a sealing action part off the piston for specifying the upstream passage advances to a facing position of the communication hole (between the upstream passage and the downstream passage) while abutting a cylinder inner peripheral surface, a cylinder space region separated from the content passage up to just before is communicated with the upstream passage and the downstream passage after passage through the hole to permit the pressure of the contents to the discharge valve to be abruptly reduced, so that opening and closing operation of the discharge valve, so that the opening and closing operation of the discharge valve are made quick, ensuring the “sharpness” of each operation at the time of starting or finishing of the discharge of the contents of the discharge valve.

The first elastic member for energizing the operation part and the piston integral therewith to the stationary mode position and the second elastic member for energizing the discharge valve to a closed state are disposed outside the passage of the contents, and the suction valve is made of a synthetic resin and there is no chance of the metal part of the component of the content discharge mechanism making contact with the contents, so that it is possible to suppress a change in properties of the contents following the contact and performance deterioration of the mechanism itself.

DESCRIPTION OF REFERENCE CHARACTERS

The following constituent components indicated by reference numbers each with an alphabet (e.g., skirt part2a) denote parts of those without alphabet (e.g., sheath-shaped piston2).

Although reference numbers in the description below are brought together for every figure of each embodiment of the content discharge mechanism, a reference number appearing in a certain figure (e.g.,FIGS. 1 to 3) is used at need as an index indicating the same kind as a constituent element of the aforementioned reference number even in other figures (e.g.,FIGS. 4 to 11).

InFIGS. 1 to 3, designated at1is an operation button;2a sheath-shaped piston fitted to and integrated with the operation button1;2aa skirt part presenting sealing action making contact with an inner peripheral surface of an inside cylindrical part3adescribed later;2ba sealing action part on the side of a tip end of the skirt part;3a screw cap threadably mounted on an opening side cylinder part of a container body12of a pump type product described later;3aa longitudinal inside cylindrical part for accommodating the sheath-shaped piston2and a spherical body to settle (part of) the upstream passage A;3b: a hole for content inflow formed below the inside cylindrical part itself;3can annular reception surface formed on the downstream side abutting on the hole and constituting the suction valve together with the spherical body5described later;3da longitudinal outer annular part connected circumferentially partly of an outer peripheral surface of the inside cylindrical part3a;3ea lateral nozzle for setting a downstream passage B abutting on the upstream passage A;3fa hole for communication of the upstream passage A and the downstream passage B;3ga recessed missing part intermittently formed circumferentially of an upper end part of the inside cylindrical part3a, through which fresh air (refer toFIG. 2) and the contents pass;4a cylindrical cover fitted to the outside upper cylindrical part3dof the screw cap3and including guide function for the operation button1and vertical motion of the sheath-shaped piston2;4aa circumferential surface opening part for avoiding collision with the nozzle3ewhen mounting the cover on the screw cap3;5a spherical body disposed so as to make close contact with the annular reception surface3cto construct the suction valve;6a coil spring disposed between a bottom surface step part of the sheath-shaped piston2and the inner circumferential surface step part of the inside cylindrical part3afor energizing the sheath-shaped piston upward;7a sealing annular rubber held between the inside cylindrical part3aand the cover body4and making contact with the outer circumferential surface of the sheath-shaped piston2;8an output side piece fitted to and integrated with an opening side of the nozzle3e;8aan annular edge part constructing a pressure storage type discharge valve together with an annular tapered surface9aof a piston9described later which is an inner surface part of the output side piece;8ba hole for outputting the contents;9the piston disposed in the nozzle3e(and lateral nozzle member24ofFIG. 4and longitudinal nozzle member32ofFIG. 5) and having a pressure storage type discharge valve function;9aan annular tapered surface constituting the pressure storage type discharge valve;9ba skirt part abutting on the inner circumferential surface of the nozzle3elocated on the side of the hole8b(left side in the figure);9can annular flat surface, a part on a base side of the skirt part for receiving content pressure in the opposite direction (right direction in the figure) to a direction of energization by a coil spring10described later;9dholes for passage of the contents formed intermittently circumferentially of the annular groove part for receiving a coil spring described later;10a coil spring for energizing the piston9in a direction approaching the hole8b(left direction in the figure);11a tube for sucking the contents mounted on a lower end side of the inside cylindrical part3aof the screw cap3;12a container body containing nose drops etc.;A an upstream passage extending from the tube11via the hole3bfor content inflow (and suction valve) to the sheath-shaped piston2and the hole3ffor communication;B a downstream passage extending from the hole3ffor communication to the hole8bfor outputting the contents;C a flow of the contents in the discharge mode;D a flow of fresh air supplied into the container body in the discharge mode where the button1is depressed;E a passage outside space region specified by the sheath-shaped piston2, the inside cylindrical part3a/outside upper cylindrical part3dof the screw cap3, the cover body4, and the annular rubber7and communicated to the container body.

For reference numbers21to27used anew inFIG. 4, designated at21is an operation lever of a rotary type (trigger5 lever);21aa rotary shaft;21ba rib-shaped part formed on the inner surface and abutting on a sheath-shaped piston22described later;22the sheath-shaped piston where its rear end part abuts on a bowl-shaped part21b;22aa skirt part presenting sealing action while abutting on an inner circumferential surface of a rear side lateral cylindrical part23b;22ba sealing action part of the skirt part on a tip end side;23a screw cap threadably engaged with the opening side cylindrical part of the container body12, on which a lateral nozzle member24described later is mounted;23aa longitudinal cylindrical part for setting the upstream passage A (part thereof)23ba rear side lateral cylindrical part, a part abutting on the longitudinal cylindrical part, for accommodating the skirt part22aof the sheath-shaped piston22and a coil spring described later etc. to set the upstream passage A (part thereof);23ca front side lateral cylindrical part, part abutting on the left (in the figure) of the rear side lateral cylindrical part, for accommodating the skirt part on the left side (in the figure) of the piston9and the coil spring10etc. to set the downstream passage B (part thereof);23da hole (refer toFIG. 3) having a function of making inner space regions of the longitudinal cylindrical part23aand the rear side lateral cylindrical part23bto communicate and a function of releasing a sealed state between the sealing action part22b(part thereof) of the sheath-shaped piston22and the lateral cylindrical part in the discharge finishing mode;23ea restriction piece for restricting a movement amount extending downward from a lower side ceiling part of the longitudinal cylindrical part23aand extending upward of the spherical body5;23fan annular protruded part formed on the upper side of the cap inner circumferential surface and holding a housing27described later by engagement;23gan annular recessed part on an upper front side for fitting and holding a lateral nozzle member24described later;23han outer annular part on an upper part rear end side for fitting and holding a reception side piece25described later;23ja passage region (refer to D inFIG. 2) for fresh air supplied into the container body in the discharge mode;23ka hole for communication between the upstream passage A and the downstream passage B;24a lateral nozzle member held by the annular recessed part23getc. of the screw cap23as a mounting base of the operation lever21and having a guide function for longitudinal movement of the piston9and a discharge valve function between it and the piston;24aan annular edge part for presenting the same action as the annular edge part8abetween it and the piston9;24ban output space region to which the output side piece8is attached as a content passage to an external space from the annular edge part24a;24can inside cylindrical part presenting sealing action with the skirt part9bof the piston9on its inner circumferential surface and thereafter permitting its rear end side part to be held in the annular recessed part23g;24da pair of recessed parts formed on a side plate inner surface part to support the rotary shaft21aof the operation lever21;25a reception side piece fitted to and held by an outer annular part23hof the screw cap23in the state where the annular rubber7and the sheath-shaped piston22are received;25aan annular recessed part for fitting and holding corresponding to the outer annular part23h;25ba center hole for guiding longitudinal movement of a rear side small diameter part of the sheath-shaped piston22;26a coil spring for energizing the sheath-shaped piston22rearwardly;27a housing engaged with and held by the annular protruded part23fof the screw cap23to construct the suction valve together with the spherical body5, and including a mounting part for the tube11; and27aan annular reception surface constructing the suction valve together with the spherical body5.

For reference numbers31,32used anew inFIG. 5designated at31is a screw cap threadably engaged with the opening side cylindrical part of the container body12to permit a longitudinal nozzle member32described later to be mounted thereon;31aa lower longitudinal cylindrical part for presenting the same action as the longitudinal cylindrical part23a;31ban intermediate sheath-shaped part for presenting the same action as the rear side lateral cylindrical part23b;31can upper longitudinal cylindrical part, part abutting on an upper portion of the lateral sheath-shaped part, for accommodating the skirt part on a lower side of the piston9and the coil spring etc. (energized upward with elastic action of the coil spring10and moving downward resisting the energizing force based on an increase of content pressure upon setting operation of the actuation mode) to set the downstream passage B (part thereof);31da hole (refer toFIG. 3) having a function of making inner space regions of the lower longitudinal cylindrical part31aand the intermediate sheath-shaped part31bcommunicate, and releasing a sealing state between the sealing action part22b(part thereof) of the sheath-shaped piston22and the intermediate sheath-shaped part and changing the discharge mode up to that time to a discharge finishing mode;31ea restriction piece for presenting the same action as the annular protruded part23f;31fan annular protruded part for presenting the same action as the annular protruded part23f;31ga longitudinal outer annular part for holding by fitting a longitudinal nozzle member described later;31ha lateral annular part for presenting the same action as the outer annular part23h;31ja passage region for fresh air supplied into the container body in the discharge mode (refer to D inFIG. 2);31ka hole for communication between the upstream passage A and the downstream passage B;32a longitudinal nozzle member, held by a longitudinal outer annular part31gof the screw cap as a mounting base part of the operation lever21and having a guide function for longitudinal movement of the piston9and a discharge valve function between it and the piston;32aan annular edge part for presenting the same action as the output space region24b;32ban output space region for presenting the same action as the output space region24b;32can inside longitudinal annular part for presenting the sealing action between it and the skirt part9bof the piston9on its inner circumferential surface; and32da pair of recessed parts for presenting the same action as the recessed part24d.

For reference numbers41to48used anew inFIG. 6, designated at41is a push type operation button moving laterally while guided to an upper surface part of25;42a sheath-shaped piston fitted to the operation button41;42aa skirt part for presenting the same action as the skirt part22ainFIG. 5;42ba sealing action part for presenting the same action as the sealing action part22binFIG. 5;43a coil spring wound on a protruded outer circumferential surface part of the sheath-shaped piston42for energizing the operation button41in the right direction in the figure;44a screw cap threadably mounted on an opening side cylindrical part of the container body12, on which a longitudinal nozzle member45described later is mounted;44aa lower longitudinal cylindrical part for presenting the same action as the lower longitudinal cylindrical part31a;44ban intermediate sheath-shaped part where the coil spring26is removed from the intermediate sheath-shaped part31binFIG. 544can upper longitudinal cylindrical part where the coil spring10is removed from the upper longitudinal cylindrical part31cinFIG. 5;44da hole (refer toFIG. 3) having a function of making inner space regions of the lower longitudinal cylindrical part44aand the rear side lateral cylindrical part44bcommunicate, and a function of releasing a sealing state between the sealing action part42b(part thereof) of the sheath-shaped piston42and the lateral cylindrical part in the discharge finishing mode;44ea restriction piece for presenting the same action as the restriction piece23e;44fan annular protruded part for presenting the same action as the annular protruded part23f;44ga longitudinal outer annular part for holding by fitting a longitudinal nozzle member45described later;44ha lateral outer annular part for presenting the same action as the outer annular part23h;44ja passage region for fresh air (refer to D inFIG. 2) supplied into the container body in the discharge mode;44ka hole for communication between the upstream passage A and the downstream passage B;45a longitudinal nozzle member for presenting the same action as the longitudinal nozzle member32;45aan output space region for presenting the same action as the output space region32b;45ban inside longitudinal annular part for presenting the sealing action between it and the upper skirt part47cof a piston47described later on its inner circumferential surface;46a cylindrical body held by fitting on a front side of the output space region45aof the longitudinal nozzle member45for presenting the action of a pressure storage type discharge valve;46aan annular edge part constituting the discharge valve together with an annular tapered surface47aof a piston47described later;47a piston disposed in the longitudinal nozzle member45and having a pressure storage type discharge valve function;47aan annular tapered surface constituting the discharge valve together with the annular edge part46a;47ba lower skirt part abutting on the inner circumferential surface of the longitudinal annular part45bof the longitudinal nozzle member45to present the sealing action;47can upper skirt part abutting on the inner circumferential surface of the longitudinal annular part45bof the longitudinal nozzle member45to present the sealing action;47da horizontal annular flat surface, part located on a base part of the skirt part for receiving downward content pressure;47ea hole for passage of the contents formed intermittently circumferentially of the inside annular groove part of the upper skirt part; and48a coil spring disposed between a bottom surface of an annular groove part between the longitudinal outer annular part44gof the screw cap44and an outer circumferential surface of the upper longitudinal cylindrical part44cand an outer circumferential surface side step part of the upper skirt part47cof the piston47for energizing the piston upward.

Reference numbers51to60used anew inFIGS. 7 to 9designated at51is a screw cap threadably mounted to the opening side cylindrical part of the container body12;51aa longitudinal inside cylindrical part for presenting the same action as the inside cylindrical part3a;51ba hole for content inflow for presenting the same action as the hole3b;51can annular reception surface for constructing the suction valve for presenting the same action as the annular reception surface3c;51da longitudinal outer annular part connected with an outer circumferential surface of the inside cylindrical part51aand partly with its circumferential direction;51ea lateral cylindrical part constituting part of the downstream passage B;51fa lateral outer annular part formed around the cylindrical part;51ga groove shaped part for fresh air communication formed from a right end part of the outer annular part to an outer circumferential surface of the same;51ha hole for communication between the upstream passage A and the downstream passage B;51ja recessed missing part formed intermittently circumferentially of an upper end of the upstream passage A, through which fresh air (refer toFIG. 8) and the contents (refer toFIG. 9) pass;52a reception side piece fitted to and held by the outer annular part51kof the screw cap51while receiving the annular rubber71sheath-shaped piston22, and a coil spring53described later etc.;53a coil spring disposed between the reception side piece and the operation button1for energizing upward the operation button;54a spherical body press member held (fitted) by an inner circumferential surface lower part of the inside cylindrical part51aof the screw cap51;54aa plurality of elastically deformable ribs for pressing the spherical body5downward;55a cover including an opening region to a lateral nozzle member56described later and fitted to and held by the screw cap51;55aa circumferential surface opening part for avoiding the collision against a lateral nozzle member56described later upon mounting the cover on the screw cap51;56a lateral nozzle member fitted to the lateral outer annular part51fof the screw cap51;56aa protruded part formed intermittently circumferentially of an inner circumferential surface on an opening part side;57an output side piece fitted to and integrated with the opening side of the lateral nozzle member56;57aa hole for outputting the contents;57ba rib-shaped part formed intermittently circumferentially of the inner circumferential surface for holding a cylindrical member60described later;58a pressure storage type piston disposed in an internal space region of the lateral nozzle member56and having a chip sealing function to the hole57a;58aa tip end side valve action part for closing the hole57aof the output side piece57in the stationary mode shown in the figure;58ba skirt part on the left side in the figure abutting on the internal circumferential surface of the lateral nozzle member56for presenting sealing action;58ca vertical annular flat surface, part of the left side skirt part on a base part side for receiving content pressure to the right direction in the figure;58da skirt part on the right side in the figure abutting on the internal circumferential surface of the cylindrical part51ein a lateral direction of the screw cap51for presenting sealing action;59a coil spring disposed between the outer circumferential surface step part of the right side skirt part58dof the piston58and an outside groove part of the lateral cylindrical part51eof the screw cap51for energizing the lateral nozzle member56in the left direction in the figure; and60a cylindrical member held on the protruded part56aof the lateral nozzle member56and on the rib-shaped part57bof the output side piece57for guiding the piston58moving horizontal direction in the figure.

Reference numbers71,72used anew inFIG. 10designated at71is an output side piece fitted to and integrated with the opening side of the lateral nozzle member56;71aa hole for outputting the contents;72a pressure storage type piston disposed in the internal space region of the lateral nozzle member56and having a chip sealing function for the hole71a;72aa tip end side valve action part for closing the hole71aof the output side piece71in the stationary mode in the figure;72ba skirt part on the left side in the figure abutting on the internal circumferential surface of the lateral nozzle member56for presenting the sealing action;72ca vertical annular flat surface, part on the base part side of the left side skirt part, for receiving content pressure to the right direction in the figure; and72da skirt part on the right side in the figure abutting on the internal circumferential surface of the lateral cylindrical part51eof the screw cap51to present sealing action.

Reference numbers81to85used anew inFIG. 11designated at81is a screw cap threadably mounted on the opening side cylindrical part of the container body12;81aa longitudinal inside cylindrical part for presenting the same action as the inside cylindrical part51a;81ba hole for content inflow for presenting the same action as the hole51b;81can annular reception surface for constructing the suction valve and for presenting the same action as the annular reception surface51c;81da longitudinal outer annular part connected partially circumferentially of an outer circumferential surface of the inside cylindrical part81a;81ea lateral cylindrical part for presenting the same action as the cylindrical part51e;81fa lateral outer annular part formed around the cylindrical part;81ga hole for communication between the upstream passage A and the downstream passage B;81ha recessed missing part formed intermittently circumferentially of an upper end part of the inside cylindrical part51a, through which fresh air (refer toFIG. 8) and the contents (refer toFIG. 9) pass;81ja fresh air passage region (refer to D ofFIG. 2) supplied into the container body in the discharge mode;82a lateral nozzle member fitted to the lateral outer annular part5if of the screw cap51;82aan annular edge part for presenting the same action as the outer annular part51fof the screw cap51;???82aan annular edge part for presenting the same action as the annular edge part8abetween it and a piston83described later;82ban inward annular protrusion part formed on the right side of the annular edge part in the figure so as to be added thereto and constructing a pressure storage discharge valve together with an intermediate outer circumferential surface83bof a piston83;82ca hole for fresh air communication formed at a portion in a disposition space region of the coil spring59;83a piston disposed in the lateral nozzle member82and having a pressure storage type discharge valve function;83aan annular tapered surface constructing the pressure storage type discharge valve together with the annular edge part82aof the lateral nozzle member82;83ban intermediate outer circumferential surface, part abutting on the right side in the figure of the annular tapered surface, constructing the pressure storage type discharge valve together with the annular protrusion part82bof the lateral nozzle member82;83ca skirt part on the left side in the figure abutting on the internal circumferential surface of the lateral nozzle member82to present sealing action;83da vertical annular flat surface, part on the base part side of the left side skirt part, for receiving content pressure to the right direction in the figure;83ea skirt part on the right side in the figure abutting on the internal circumferential surface of the lateral cylindrical part81eof the screw cap81to present sealing action;84a synthetic resin made valve with spring;84aa flange shaped part fitted to and held by the internal circumferential surface step part (recessed part) of the inside cylindrical part81aof the screw cap81;84ba spiral spring part extending downward from the flange shaped part;84ca semispherical body part abutting on a lower end side of the spring part and constructing the suction valve together with the annular reception surface81c; and85a cover cap removable with respect to the cover55and the screw cap81for protecting the operation button1and the output side piece71when mounted.

DESCRIPTION OF THE INVENTION

(1) the stationary mode means that the operation button and the operation lever are not depressed with the discharge valve being closed;

(2) The discharge mode (injection mode) means that the operation button and the operation lever are depressed to open the discharge valve and the sealing action part of the piston moving in the cylinder does not yet proceed up to a facing position of the communication hole (between the upstream passage and the downstream passage).
(3) The discharge finishing mode (injection finishing mode) means that the operation button and the operation lever are further depressed, and the sealing action part of the sheath-shaped piston. For example, interlocking with these operation parts advances to facing positions of the communication hole between the upstream passage and the downstream passage (refer toFIGS. 1 to 3,FIGS. 7 to 11) and up to the facing position of the communication hole (refer toFIGS. 4 to 6) of the accommodation space part of the piston on the sealing action part side and the suction valve accommodation space part on this side of the former to change the discharge valve from “open” up to that time to “close” and returns to the stationary mode by releasing of the discharge operation by a user;
(4) the longitudinal direction means a vertical direction of the container body (e.g., longitudinal direction of the sheath-shaped piston2and the coil spring6inFIG. 1; and
(5) the lateral direction means a direction substantially perpendicular to the vertical direction of the container body (e.g., longitudinal direction of the piston9and the coil spring10inFIG. 1).

DETAILED DESCRIPTION OF THE INVENTION

In the stationary mode inFIG. 1,

(1a) the operation button1and the sheath-shaped piston2move upward by the action of the coil spring6,

(1b) the suction valve and the discharge valve are closed, and

(1c) the contents enter the upstream passage A and the downstream passage B (part thereof) extending from the suction valve (at least after a pump type product is used even one time) via the hole3ffor communication to the discharge valve.

In the discharge mode inFIG. 2where the sealing action part2bof the sheath-shaped piston2is yet located at an upward position from the hole3ffor communication by depressing the operation button1,

(1d) in response to lower movement of the sheath-shaped piston2aa volume of the passage of (1c) is reduced to gradually raise content pressure there,

(1e) when the total pressure of the contents in the right direction in the figure received by the annular flat surface9cor the like becomes stronger than driving force to the left direction in the figure of the coil spring10or the like to the piston, the piston moves in the right direction in the figure,
(1f) with the movement, the annular edge part8aof the output side piece8of the discharge valve and the annular tapered surface9aof the piston9, closely making contact up to that time, are separated (the annular reception surface3cof the suction valve and the spherical body5are kept closed),
(1g) by the “opening” of the discharge valve, the contents contained in the passage of (c) are discharged from the hole8bof the output side piece8to external space along the flow C.

In the discharge finishing mode inFIG. 3where the sheath-shaped piston2more descends than the position inFIG. 2and its sealing action part,2bmoves to the position of the hole3ffor communication,

(1h) the passage outside space region E and the internal space region of the container body12are communicated with the passage of (1c) to permit a volume of the content accommodation space region from the suction valve to the discharge valve to be sharply increased compared with the case just before (substantially the state inFIG. 2),
(1j) with the sharp increase of the volume pressure of the contents in the accommodation space region is sharply reduced, and the total pressure received by the annular flat surface9cof the piston9etc. to the right direction in the figure is also reduced,
(1k) as a result, the piston9returns to the left direction in the figure with elastic energizing force of the coil spring10in the right direction in the figure to securely “close” the discharge valve that has been opened up to that time.

When a user depresses the operation button1(of the stationary mode) by a predetermined stroke in such a way to lower the sealing action part2bof the sheath-shaped piston2up to the position of the hole3ffor communication, the operation instantaneously changes from the discharge mode to the discharge finishing mode.

When the user stops the depressing operation of the operation button1, i.e., the user takes off his or her finger from the operation button1, the operation button and sheath-shaped piston2returns upward with the elastic energizing force of the coil spring6.

At this time, the volume of the passage of the (1c) is increased to permit the passage to become negative pressure with respect to the internal space of the container body12, so that the spherical body5moves upward by receiving the content pressure on the container body side to “open” the suction valve. The discharge valve is kept closed.

As a result, the contents in the container body12flow into the passage of the (1c) after passage through the tube11and the hole3bso that when the content pressure in the passage and self weight of the spherical body5applied downward to the spherical body5exceeds the content pressure on the container body side applied upward to the spherical body5, the spherical body settles down to make contact with the annular reception surface3c. This permits the suction valve to be closed and the operation to return to the stationary mode ofFIG. 1.

Following the pressing operation of the operation button1the annular rubber7is dragged downward in its inside edge part by the sheath-shaped piston2in the form of its bowing head.

For this, the degree of contact between the annular rubber7and the outer circumferential surface the sheath-shaped piston2becomes small ensuring slight gap. Hence in the case of at least the discharge mode ofFIG. 2, fresh air is supplied to the container body by a flow D passing the gap—the recessed missing part of the inside cylindrical part—the passage region between the inside cylindrical part and the outside upper cylindrical part3d. This compensates pressure lowering in the internal space region of the container body12.

Assembling work of other components to the screw gap3ofFIG. 1is as follows. For example, (s11) the spherical body5, coil spring6, and sheath piston2is set in the inside cylindrical part3a, and the annular rubber7and the cover structure4are mounted on the outer annular part3detc. from above, and thereafter the operation button1is fitted to the sheath-shaped piston2, (s12) the coil spring10and the piston9are set in the lateral nozzle3e, and the output side piece8is mounted on the opening part side of the nozzle, and (s13) the tube11is mounted on the lower end opening part of the inside cylindrical part3a. The order of working units of the (s11) to (s13) is arbitrary.

A content discharge mechanism inFIG. 4is basically different from that ofFIG. 1as follows:

(21) A rotary type operation lever (trigger lever) is employed instead of the operation type 1 of depression type.

(22) When turning operation of the trigger lever in an illustrated clockwise direction of the trigger lever (discharge mode setting operation) is performed, there are provided a lateral sheath-shaped piston interlocking with the trigger lever and a coil spring for energizing the piston in the illustrated right direction (stationary mode position).
(23) As the discharge member on which the output side piece8is mounted there is provided a lateral nozzle member independent from the screw cap inFIG. 1.
(24) A restriction piece is formed on the cap for restricting the amount of upward movement of the spherical body5.

In the stationary mode inFIG. 4,

(2a) the sheath-shaped piston22moves in the illustrated right direction owing to the action of the coil spring26, and the operation lever21interlocking via the sheath-shaped piston and the rib-shaped piston21bis in an initial state where it is turned anticlockwise,
(2b) the suction valve and the discharge valve are closed, and
(2c) the contents enter the upstream passage A and the downstream passage B (part thereof) extending from the suction valve via the holes23d,23kto the discharge valve.

When a user sets the hole8bof the output side piece8for example to a mouth thereof and then turns the operation lever21clockwise, the sheath-shaped piston22is pushed by the rib-shaped part21band moves in the illustrated left direction against the elastic energizing force of the coil spring26into the discharge mode (not shown).

More specifically, by the movement of the sheath-shaped piston22in the left direction, in the same manner as in the case ofFIG. 2,

(2d) the volume of the passage of the2(c) becomes small and the content pressure thereof is gradually raised,

(2e) When the total pressure of the contents in the illustrated right direction received by the annular flat surface9cof the piston9becomes stronger than the driving force in the illustrated left direction of the coil spring10or the like to the piston, the piston moves in the illustrated right direction,
(2f) with the movement, the annular edge part24aof the lateral nozzle member24of the discharge valve and the annular tapered surface9aof the piston9, both in close contact with each other up to that time are separated (the annular reception surface27aof the suction valve and the spherical body5are kept closed), and
(2g) with “opening” of the discharge valve the contents accommodated in the passage of the (2c) up to that time are discharged to external space from the hole8bof the output side piece8.

The mode of fresh air supply into the container inside from the passage region23jin the discharge mode is the same as the flow D inFIG. 2.

In the discharge finishing mode where the sealing action part22bof the sheath-shaped piston22moves up to the position of the hole23d, the operation, as inFIG. 3, instantaneously changes from the discharge mode up to that time to the discharge finishing mode.

Once the user stops the turning operation of the operation lever21, the operation lever and the sheath-shaped piston22returns in the illustrated right direction with the elastic energizing force of the coil spring26and changes to the stationary mode inFIG. 4.

As illustrated in the description of the discharge finishing mode inFIG. 3, the contents in the container body12enter the passage of the (2c) via the tube11on the middle of the change to the stationary mode.

Assembling work of other components to the screw cap23inFIG. 4is for example as follows:

(s21) The housing27in the state where the spherical body5and the tube11are set is fitted to the annular protruded part23f.

(s22) The coil spring26and the sheath-shaped piston22are set in the rear side lateral cylindrical part23bare set, and in this state, the annular rubber7and the reception side piece25are mounted on the lateral cylindrical part and the outer annular part23hetc. from the illustrated right side.
(s23) The coil spring10and the piston9are set in the front side lateral cylindrical part23c, and in this state the lateral nozzle member24(into which the output side piece8is assembled) is mounted on the annular recessed part23getc.
(s24) The rotary shaft21aof the operation lever21is mounted in the pair of the recessed parts24dof the lateral nozzle member24.

The order of execution of the working units of (s21) to (s24) is arbitrary under the conditions where the work of (s24) is performed after (s22) and (s23).

The content discharge mechanism inFIG. 5is basically different from that inFIG. 4as follows:

(31) a longitudinal nozzle member is used instead of the lateral nozzle member24inFIG. 4;

(32) a piston9presenting discharge valve action between it and the longitudinal nozzle member and a coil spring10for energizing the piston upward are provided vertically; and

(33) the whole of the upstream passage A and downstream passage B are made substantially vertically linear.

In the stationary mode inFIG. 5,

(3a) the sheath-shaped piston22is moved in the illustrated right direction by the action of the coil spring26and the operation lever21interlocking via the sheath-shaped piston and the rib-shaped part21bis in an initial state where it is turned anticlockwise;
(3b) the suction valve and the discharge valve are closed;
(3c) the contents are contained in the upstream passage A and the downstream passage B (part thereof) extending from the suction valve (after a pump type product is used at least even once) via the holes31d,31kto the discharge valve.

When a user sets the hole8bof the output side pierce8to a nose hole or the like and then the operation lever21is turned clockwise, the sheath-shaped piston22is pressed to the rib-shaped part21band is moved in the illustrated left direction against the elastic energizing force of the coil spring26to change to the discharge mode (not shown).

More specifically, by the movement of the sheath-shaped piston22to the left direction, in the same manner as in the case inFIG. 2,

(3d) the volume of the passage of (3c) is reduced and the pressure of the contents there is gradually raised;

(3e) when the total pressure of the contents to the illustrated lower direction received on the annular flat plane9cof the piston9becomes larger than the driving force of the coil spring10or the like to the piston to the illustrated upper direction, the piston moves in the illustrated lower direction;
(3f) with the movement, the annular edge part32aof the longitudinal and lateral nozzle members32of the discharge valve and the annular tapered surface9aof the piston9, both in close contact up to that time, are separated (the annular reception surface27aof the suction valve and the spherical surface5are kept closed);
(3g) by the “opening” of the discharge valve the contents contained till then in the passage of (3c) is discharged to external space from the hole8bof the output side piece8.

The state of fresh air supply from the passage region23jinto the container in the discharge mode is the same as the flow D inFIG. 2.

In the discharge finishing mode where the sealing action part22bof the sheath-shaped piston22is moved to the position of the hole31d, as inFIG. 3, the operation is instantaneously changed from the discharge mode till then to the discharge finishing mode.

Once the user stops the turning operation of the operation lever21, the operation lever and the sheath-shaped piston22are restored in the illustrated right direction with the elastic energizing force of the coil spring26and changes to the stationary mode inFIG. 5.

As described in the discharge finishing mode inFIG. 3, the contents in the container body12flow into the passage of (3c) via the tube11in the course of the change to the stationary mode.

The assembling work of other components to the screw cap31inFIG. 5is, for example, as follows:

(s31) the housing27in the state where the spherical body5and the tube11are set is fitted to the annular protruded part31f;

(s32) in the state where the coil spring26and the sheath-shaped piston22are set in the intermediate sheath-shaped part31b, the annular rubber7and the reception side piece25are mounted on the intermediate sheath shaped part and the outer annular part31hor the like from the illustrated right direction;
(s33) in the state where the coil spring10and the piston9are set in the upper longitudinal cylindrical part31c, a longitudinal nozzle member32(in which the output side piece8is incorporated) is mounted on the outer annular part31g;
(s34) and the rotary shaft21aof the operation lever21is mounted on the pair of the recessed parts32dof the longitudinal nozzle member32.

The order of execution of the working units of (s31) to (s34) is arbitrary under the conditions where the work of (s34) is performed after (s32) and (s33).

The content discharge mechanism inFIG. 6is basically different from that inFIG. 5as follows:

(41) an operation button of a lateral press type is used instead of the operation lever21of the rotation type; and

(42) the coil springs43,48individually energizing the operation button41and the piston47are provided outside the content passage, respectively.

Using the so-called outer spring as the energizing member of the piston9and the sheath-shaped piston22as described above makes it possible to reduce the degree of contact of the contents, a discharge object with any metal to the utmost, hereby preventing the contents from being changed owing to contact with metal.

In the stationary mode inFIG. 6,

(4a) the operation button41and the sheath-shaped piston42are in the initial state where they moved in the illustrated right direction by the action of the coil spring43;

(4b) the suction valve and the discharge valve are closed; and

(4c) the contents are contained in the upstream passage A and the downstream passage B (part thereof) extending from the suction valve (after a pump type product is used at least even once) via the holes44dand44kto the discharge valve.

when a user sets the hole8bof the output side piece8, for example, into a nose hole and then pushes the operation button41in the illustrated left direction, the sheath-shaped piston42is moved in the illustrated left direction against the elastic energizing force of the coil spring43into the discharge mode (not shown).

More specifically, by the movement of the sheath-shaped piston42in the left direction, as in the case ofFIG. 2,

(4d) the volume of the passage of (4c) is reduced and the content pressure within is gradually raised;

(4e) when the total pressure of the contents to the illustrated lower direction received on the annular flat surface47dof the piston47becomes larger than the driving force of the coil spring48or the like to the piston to the illustrated upper direction, the piston moves in the illustrated lower direction;
(4f) by the movement, the annular edge part46aof the cylindrical body46of the discharge valve and the annular tapered surface47aof the piston47, both in close contact till then, are separated (the annular reception surface27aof the suction valve and the spherical body5are kept closed);
(4g) by the opening of the discharge valve the contents contained in the passage of (4c) are discharged to external space from the hole8bof the output side piece8.

The state of fresh air supply from the passage region44jinto the container in the discharge mode is the same as in the flow D inFIG. 2.

Further, in the discharge finishing mode where the sealing action part42bof the sheath-shaped piston42moves up to the position of the hole44d, the operation changes instantaneously, as in the same manner as inFIG. 3, from the discharge mode till then to the discharge finishing mode.

Once the user stops the press operation of the operation button41, the operation button and the sheath-shaped piston42are restored in the illustrated right direction with the elastic energizing force of the coil spring43into the stationary mode inFIG. 6.

As described in the discharge finishing mode ofFIG. 3, the contents in the container body12flow into the passage of (4c) via the tube11in the course of the change to the stationary mode.

Assembling work of other components to the screw cap44inFIG. 6is, for example, as follows:

(s41) the housing27in the state where the spherical body5and the tube11are set is fitted to the annular protruded part44f;

(s42) a unit in which the annular rubber7, reception side piece25, operation button41, sheath-shaped piston42, and coil spring43are incorporated is mounted on the intermediate sheath-shaped part44band the outer annular part44hor the like from the illustrated right direction; and
(s43) the piston47is set inside the upper longitudinal cylindrical part44cand the coil spring48is set outside the same, and in this state the longitudinal nozzle member45is mounted on the outer annular part44g(in which the output side piece8is incorporated). The order of execution of the working units of (s41) to (s43) is arbitrary.

In the content discharge mechanism inFIGS. 5 and 6a position relation of the hole31kand the hole31din the illustrated left and right directions and a position relation of the hole44kand the hole44din the illustrated left and right directions may be reversed.

In this case, the hole31dand the hole44dact as a simple hole for communication.

In contrast, the hole31kand the hole44krelease a sealing state between the sealing action parts22b,42b(part thereof) of the sheath-shaped pistons22,42and the intermediate sheath-shaped parts31b,44bto change the discharge mode till then to the discharge finishing mode.

This is because when the sealing action parts22b,42bof the sheath pistons22, and42in the discharge mode move in the illustrated left direction, they reach the hole31kand the hole44k.

More specifically, when the sealing action parts22b,42bof the sheath-shaped pistons22,42reach the hole31kand the hole44k, as described above (refer toFIG. 3),

(1h)′ the passage outside space region E and the internal space region of the container body12are communicated with the passage of (1c) and a volume of the content containing space region from the suction valve to the discharge valve is rapidly increases compared with the state just before (substantially the state inFIG. 2),
(1j)′ by the rapid increase of the volume pressure of the contents in the containing space region is rapidly reduced and the total pressure received in the illustrated lower direction by the annular flat surface9cof the piston9is also reduced, and
(1k)′ as a result, the piston9is restored in the illustrated upper direction with the elastic energizing force of the coil spring10, and the discharge valve opened up to that time is securely “closed”.

The content discharge mechanism ofFIGS. 7 to 9is basically different from that inFIG. 1as follows:

(51) Coil springs53,59for individually energizing the operation button1and the downstream side piston58are provided in the outside space region of the content passage, respectively; and

(52) a tip sealing function is provided for the hole57afor outputting the contents.

By using the so-called outer spring as the energizing member of the operation button1and the piston58it is possibly reduced for the contents, a discharge object to make contact with metal and the contents are prevented from being changed owing to contact with metal.

Further, by directly opening and closing the hole57afor outputting the contents the residual contents in a passage or the like in the vicinity of the hole are prevented from flowing out of the hole after the operation is restored from the discharge mode to the stationary mode.

In the stationary mode inFIG. 7,

(5a) the operation is in an initial state where the operation button1and the sheath-shaped piston2integral with the former are moved in the illustrated upper direction by the action of the coil spring53;

(5b) the suction valve and the discharge valve are closed; and

(5c) the contents are contained in the upper passage A and the lower passage B (part thereof) extending from the suction valve (after the pump type product is used at least even once) via the hole51hto the discharge valve.

When a user sets the hole57aof the output side piece57for example to a mouth for example and then depresses the operation button1downward, the sheath-shaped piston2moves in the illustrated lower direction resisting the elastic energizing force of the coil spring53into the discharge mode inFIG. 8.

More specifically, by the downward movement of the sheath-shaped piston2

(5d) a volume of the passage of (5c) is reduced to gradually raise the pressure of the contents there;

(5e) At the time, the total pressure of the contents in the illustrated right direction received by the annular flat surface58cof the piston58becomes higher than the driving force of the coil spring59in the illustrated left direction to the piston, the piston moves in the illustrated right direction;
(5f) by the movement, the hole57aof the output side piece57of the discharge valve and the tip end side valve action part58aof the piston58, both in close contact till then, are separated (the annular reception surface27aof the suction valve and the spherical body5are kept closed); and
(5g) by the opening of the discharge valve the contents contained till then in the passage of (5c) are discharged to external space from the hole57aof the output side piece57through the flow C.

In the discharge mode fresh air supply by the flow D into the container is performed likewise the case inFIG. 2.

Further, in the discharge finishing mode inFIG. 9where the sealing action part22bof the sheath-shaped piston22moves to the position of the hole23d, the operation changes instantaneously from the discharge mode till then to the discharge finishing mode likewiseFIG. 3.

Once a user stops pressing operation to the operation button1, the operation button and the sheath-shaped piston2are restored in the illustrated upper direction with the energizing force of the coil spring53and are changed to the stationary mode inFIG. 7.

When restoring from the discharge finishing mode inFIG. 9to the stationary mode inFIG. 7, as described inFIG. 3, the suction valve of the spherical body5is once opened and the contents in the container body12flow into the passage of (5c) therefrom.

The assembling work of other components for the screw cap51inFIG. 7is, for example, as follows:

(s51) The piston58is set inside the lateral cylindrical part51eand the coil spring59is set outside, and in this state a lateral nozzle member56(in which the output side piece57is incorporated) is fitted to the lateral outer annular part51f;

(s52) the cover body55is fitted to the longitudinal outer annular part51d;

(s53) the spherical body5and the spherical body press member54are mounted in the inside cylindrical part51a;

(s54) a unit in which the operation button1, sheath-shaped piston2, annular rubber7, reception side piece52, and coil spring53are incorporated is fitted to the inside cylindrical part51aand the outer annular part51dor the like from above in the figure; and
(s55) the tube11is mounted on a lower end opening part of the inside cylindrical part51a.

The order of execution of working units of (s51) to (s55) is arbitrary under the conditions that the work of (s52) is performed after (s51), and the work of (s54) is performed after (s52) and (s53).

The content discharge mechanism ofFIG. 10is basically different from that ofFIG. 7as follows:

(61) Instead of the output side piece57ofFIG. 7there is used an output side piece71of the shape where the side of the hole57ais more actively protruded than a tip end of the lateral nozzle member56;

(62) instead of a pressure storage type piston58inFIG. 7there is used a piston72in the form where a tip end side valve action part58athereof (when the stationary mode) abuts on the hole of the output side piece; and

(63) the cylindrical member60mounted in the output side piece57is not used.

The description of the operation in the stationary mode, discharge mode, and discharge finishing mode of the content discharge mechanism inFIG. 10is the same as that of each inFIGS. 7 to 9.

That is, terms with respect to the output side piece57and the piston58in the description ofFIGS. 7 to 9are made to correspond to an “output side piece71and a “piston72”. Contents thereof are also adequate as the description of operation of the content discharge mechanism inFIG. 10.

Further, assembling work of other components to the screw cap51inFIG. 10is the same as that inFIG. 7.

The content discharge mechanism inFIG. 11is basically different from the one inFIG. 10as follows:

(71) A tip sealing function for the hole71aof the output side piece71inFIG. 10is neglected;

(72) instead of the spherical body5and spherical body press member54inFIG. 10there is used a synthetic resin-made valve with spring;

(73) a double sealing function is imparted to the discharge valve; and

(74) a cover cap is provided for the press button, lateral nozzle member, and output side piece.

By intending that energizing members of the operation button1and the piston83are made to be outer springs and additionally thereto the suction valve is made of a synthetic resin, the possibility that the contents that are a discharge object make contact with metal is eliminated and so the contents are more securely prevented from being changed owing to contact with metal.

Further, by making the discharge valve a double structure the contents in the stationary mode are more securely prevented from leaking to external space.

In the stationary mode inFIG. 11,

(6a) by the action of the coil spring53, the operation is in an initial state where the operation button1and the sheath-shaped piston2integral therewith are moved in the illustrated upper direction;

(6b) the suction valve and the discharge valve are closed; and

(6c) the contents are contained in the upstream passage A and the downstream passage B (part thereof) extending from the suction valve (after a pump type product is used at least even once).

When a user removes the cover cap85from the cover body55and the screw cap81etc. and, after the hole57aof the output side piece57for example is set to a mouth for example, the operation button1is depressed downward, the sheath-shaped piston2moves in the illustrated lower direction against the elastic energizing force of the coil spring53to result in the discharge mode (refer toFIG. 8).

More specifically, by the downward movement of the sheath-shaped piston2,

(6d) the volume of the passage of (6C) is reduced and pressure of the contents there is gradually raised;

(6e) the piston moves in the illustrated right direction when the total pressure of the contents to the illustrated right direction received by the annular flat surface83dof the piston83becomes larger than the driving force of the coil spring59to the illustrated left direction to the piston;
(6f) by the movement,

a portion between the annular edge part82aof the lateral nozzle member82and the annular tapered surface83aof the piston83and

a portion between the annular protruded part82bof the lateral nozzle member82and an intermediate outer circumferential surface83bof the piston83of the double discharge valve in close contact up to that time are separated (the annular reception surface27aof the suction valve and the spherical body5are kept closed); and

(6g) by the “opening” of the double discharge valve, the contents contained in the passage of (6c) till then are discharged into external space from the hole71aof the output side piece71.

The state of fresh air supply from the passage region81jinto the container in the discharge mode is the same as the D inFIG. 2.

In the discharge finishing mode where the sealing action part2bof the sheath-shaped piston2moves up to the position of the hole81gthe operation is instantaneously changed from the discharge mode till then to the discharge finishing mode as in the case inFIG. 3.

When a user stops depressing of the operation button1, the operation button and the sheath-shaped piston2is restored in the illustrated upper direction by the elastic energizing force of the coil spring53to change to the stationary mode inFIG. 11.

Further, as described in the discharge finishing mode ofFIG. 3, the contents in the container body12flow into the passage of (6c) after passage through the tube11, the hole81b, and the opened suction valve or the like in the course to the change to the stationary mode.

Assembling work of other components to the screw cap51inFIG. 11is the same at that inFIG. 7.

The contents in the container include as objects varieties of properties such as liquid, foamable (foam-like), pasty, gel, powdery.

Pump type products to which the present invention is applicable include various applications such as cleansing agents, cleaning agents, antiperspirants, coolants, muscle antiphlogistic agents, hair styling agents, hair treatment agents, hair washing agents, hair restorers, cosmetics, shaving foams, foods, droplet like products (such as vitamin), medical goods, quasi drugs, coating materials, gardening agents, repellant agents (insecticides), cleaners, deodorants, laundry starch, urethane foams, extinguishers, adhesives, lubricant agents or the like.

Contents accommodated in the container body include powdery products, oil components, alcohols, surfactants, high polymers, and effective components associated with various applications.

Alcohols include monovalent lower alcohol such as ethanol, monovalent higher alcohol such as lauryl alcohol, and multivalent alcohol such as ethylene grycol or the like.

Surfactants include anionic surfactant such as sodium laurylsulphate, non-ionic surfactant such as polyoxiethylene oleyl ether, amphoteric surfactant such as lauryl dimethyl amino acetic acid betaine, and cationic surfactant such as alkylchloride trimethylammonium or the like.

Polymer molecule compounds include methylcellulose, gelatine, starch, and casein or the like.

Effective components associated with respective applications include antiphlogistics/analgesics such as methyl salicylate and indometacin, bactelia elimination agents such as sodium benzoate and cresol, harmful insect extermination agents such as pyrethroid, diethyltoluamide, anhidrotics such as zinc oxide, algefacient such as camphor and peppermint camphor, antiasthmatic agents such as ephedrine and adrenaline, edulcorant such as sucralose and aspartame, adhesive and paint such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, and extinguishant such as ammonium dihydrogenphosphate and sodium/potassium acid carbonate or the like.