JPS636276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for producing a liquid release agent using a propellant.
A self-closing discharge valve of a pressurized container adapted to discharge in the form of a paste or foam, having an outlet slot, which can be attached to the valve body and whose outer part can be moved in a given direction, preferably by the user's hand. Relating to a self-operating sealing device that opens automatically.

To the best of the inventor's knowledge, such automatic actuation devices are new. The invention also relates to a discharge device comprising a self-closing discharge valve of a pressurized container and a novel self-sealing actuator as described above attached to the discharge valve.

The object of the present invention is to provide an actuating device and a dispensing device including such an actuating device, which does not involve any hindrances in discharging a liquid releasing agent in liquid, paste or foam form from a pressurized container by means of a propellant. We are trying to provide the following. These obstacles include, among other things, residue remaining in the discharge slot and discharge orifice on the downstream or outlet side of the sealed area of the discharge valve body. Such residues are typically exposed to the outside air, dry out, deteriorate, or become susceptible to bacterial attack, and tend to clog the discharge holes or contaminate subsequent discharges. Such drawbacks occur, for example, when the foam of the shaving agent stored in the pressure can is discharged.

In other words, after a pressure can containing such a shaving agent is left unused for a long period of time, the shaving agent applied to the user's facial skin or other parts of the user's body may have already deteriorated. or is inevitably part of a foamy residue that has decomposed or deteriorated and decomposed. The degraded or degraded or degraded and degraded shaving agent is then covered with fresh foam and mixes with this foam.

At the same time, it is an object of the present invention to provide an actuating device and, with such an actuating device, a container containing a releasing agent which can be emptied virtually completely without regard to excessive pressures above atmospheric pressure inside the container. It is intended to provide a release device.

Another obstacle to avoid is the tendency for release to be particularly strong during the initial stages of releasing the release agent from the container. Due to too high a pressure in a filled or still mostly filled container, the release agent is often released in the form of a jet, resulting in an unsatisfactory foam formation, or even after the release valve is closed, the release agent is not released. continues for a long time.

A self-sealing actuator as described above, according to the invention, comprises (a) two open ends, one of which aligns with the outflow slot upon attachment of the actuator to the valve body, and the other of which constitutes a discharge orifice; (b) a tubular actuating part as an external part having a tubular passage interconnecting their two ends; and (b) a blockage which blocks and seals off said discharge orifice from the outside when the blockage part is in the closed position. (c) a blocking piece having a head and axially movable within said tubular passageway between an open position and a closed position; and (c) cooperating with at least one of said tubular actuating piece and said blocking piece. and a spring member configured to urge the tubular actuating member and the blocking member toward the closed position when the actuator is in the open position, the tubular actuating member being biased by the spring member. When moved toward the open position by an axial force directed away from the discharge orifice against a biasing action on the tubular actuating member, the closure head is moved away from the discharge orifice by the tension of the spring piece. and the discharge orifice is opened in the form of an annular gap.

In a preferred embodiment of the invention, the tubular actuating piece includes a conical, inwardly tapered valve seat around the discharge orifice. Against this valve seat, in the closed position, the blocking head of the blocking piece rests in a sealing manner.

In a first embodiment, the closure piece is provided with a resilient tongue projecting outwardly from the closure piece. The conduit passageway has an inner wall, and includes a tongue-related portion projecting inwardly from the inner wall and associated with the elastic tongue, such that the blocking piece is outwardly connected to the tubular actuating piece. When moved, the elastic tongue is biased towards the closed position.

In a most preferred embodiment, the tubular actuating piece is provided with an elastically bendable wall section which acts as a spring piece as mentioned in point (c) above, so that said actuating piece is subjected to a force to cause the closure head to When the actuator is disassociated from the discharge orifice, the bendable wall section is compressed and the actuating piece is correspondingly shortened in the axial direction. Preferably, the blocking piece comprises a fixing piece for fixing the blocking piece within the tubular actuating piece. This fixed piece is associated with the actuating piece in the fixed piece area at the end of the bendable wall section remote from the discharge orifice.

The actuating piece and the closing piece are each an integral part of synthetic plastic material. However, while the blocking piece is made integrally from a synthetic hard plastic material, the tubular actuating piece is made from two rigid tubular parts, each made integrally from a synthetic hard plastic material and an elastically deformable synthetic plastic material. It is preferable to consist of an ivy ring-shaped wall portion. One of the rigid tubular sections has a discharge orifice at one end thereof and is joined to one end of the annular wall section at the other end. The other end of the annular wall section is joined to the other rigid tubular section.

The invention further comprises: (a) a valve body having an outflow slot; a valve seat; and a valve spring member biasing the valve body relative to the valve seat in a closed position; self-closing discharge valves for pressurized containers adapted for dispensing liquids, pastes or foams;
() an automatic seal actuating device attached to the valve body;
(a) a tubular actuating piece having two open ends, one aligned with the outflow slot and the other defining a discharge orifice, and a tubular passage interconnecting the two ends; b) a blockage part disposed within said tubular passageway and movable in the axial direction between an open position and a closed position, the blockage part having a blockage head which blocks said discharge orifice and seals it from the outside when the blockage part is in the closed position; (c) cooperating with at least one of said tubular actuating piece and said blocking piece when the actuator is in an open position;
an actuation spring member configured to bias the tubular actuation piece and the closure piece toward a closed position, respectively; The closing head is moved by the tension of the actuating spring member when moved toward the open position by an axial force directed from the discharge orifice toward and away from the discharge valve against a biasing action on the actuating member. The present invention relates to a discharge device which is moved out of said discharge orifice and is adapted to open said discharge orifice in the form of an annular gap.

The tubular actuating piece preferably has a conically shaped inwardly tapered valve seat around the discharge orifice, and the blocking head preferably has a front surface and a rear surface facing toward the tubular passageway. This rear surface corresponds to a conically shaped beveled area adapted to sealingly associate with the tapered valve seat of the tubular actuating piece when in the closed position.

The strength of the valve spring piece and the strength of the operating spring piece are
Preferably, the relative proportions are such that the valve body leaves its valve seat against the action of the valve spring piece at the very beginning when the blocking head leaves the discharge orifice to form said annular gap.

The strengths of the valve spring piece and the actuating spring piece are such that the valve body leaves its valve seat only after the closure head leaves the discharge orifice and forms the annular gap.

As in the first embodiment of the invention described above, the closure piece can have a resilient tongue projecting outwardly from the valve body. The tubular passageway also has an integral wall and includes a tongue-associated portion projecting inwardly from said inner wall for engagement with the resilient tongue when the blocking piece moves outwardly relative to the tubular actuating piece. The resilient tongue is biased toward a closed position.

And in this embodiment, the tubular passageway can have inwardly projecting tubular shoulders. In the closed position, this annular shoulder extends at a distance above the valve body around said outflow slot; in the open position, the annular shoulder is associated with the valve body and connects the valve body to the valve spring section. The discharge valve is opened by pressing against the action of.

In a most preferred embodiment of the ejection device according to the invention, the tubular part is provided with an elastically bendable wall section acting as a spring part as mentioned in paragraph (c), so that the actuating part can be applied with a force. Upon disassociation of the blocking head from the discharge orifice, the bendable wall section is compressed and the actuating piece is correspondingly shortened axially, and the blocking piece secures the blocking piece within the tubular actuating piece. A fixing piece is provided which is associated with the actuating part in the area of the actuating part on the side of the bendable wall area remote from the discharge orifice.

However, if a further force is applied to the actuating piece in a direction toward the valve body, the tubular actuating piece moves the valve body against the action of the valve spring piece to open the discharge valve.

The tubular actuating piece may be provided with a shell around the tubular passage and a contact piece connected to this shell in the region between its discharge orifice and the elastically bendable wall section. These contact pieces can be pressed with the fingers of the user's hand.

The release valve includes a mounting piece adapted to mount the valve to the wall of the pressurized vessel. The contact piece is also a finger cap with a periphery partially fixed to the mounting piece, and finger pressure applied to the cap moves the actuating piece to tilt the foldable wall area towards the open position and into compression. do. In this case, the valve body of the discharge valve is tiltable so that, after full compression of the bendable wall area of the actuating part, the discharge valve is opened by tilting the valve body under the pressure of this actuating part. The tubular actuating piece and the finger cap are preferably made in one piece from a synthetic resin material.

In a particularly preferred embodiment, the cap includes a roof portion and cap side walls. The periphery of the roof section is connected to the side wall of the cap by a bridge section. The remainder of these roof sections and the side walls are separated from each other by arcuate slots.

The novel actuation and release device according to the invention comprises:
Ensures a clean seal of the discharge orifice and eliminates undesirable air pockets in the actuation position and undesirable release agent trapped inside the actuator between the closed discharge orifice of the actuator and the closed discharge valve of the pressurized vessel. pressure increase and can be avoided.

By first opening the discharge orifice of the actuator and then opening the pressurized vessel discharge valve, staggered closing of these closure pieces in the reverse order causes the discharge orifice in the actuator to close after the vessel discharge valve is closed. Any remaining foam can be released from any pressure before sequentially closing the external discharge orifice of the actuator. This means that a subsequent pressure increase inside the actuating device is virtually impossible.

Furthermore, the staggered closing of the two closure pieces, first the discharge valve and then the discharge orifice of the actuating device, as described above, causes the residual froth downstream of the discharge valve to be sufficiently expanded within the tubular actuating piece. After releasing the trapped air bubbles to the outside and closing the discharge orifice, the remaining space within the working piece can be left substantially unpressurized.

Also, when the release device is activated again, the trapped and unpressurized residual foam is gradually propelled under the pressure of the release agent which further enters the interior of the actuating part after opening the release valve of the pressurized container. be done. Since the discharge orifice of the actuator is already open before the discharge valve of the container is opened, there is no boost of the discharge agent and no pressure rise.

Embodiments of an actuating device and a discharging device according to the invention will now be described in detail with reference to the accompanying drawings.

In the following description, the terms "upper" and "lower" refer to the location of each part in the illustration. The terms "outward" and "inward" refer to the direction of movement away from or towards the interior of the pressure canister having the discharge valve in which the actuating device of the invention is intended to be installed.

The preferred embodiment of the actuating device 10 shown in FIGS.
It is provided with a tubular actuating piece 11 which can be fixed in a sealing manner to a. The discharge valve 3 is mounted in a conventional manner, such as by manual mounting 6 to the wall of a pressurized canister or similar container 1, as shown in FIG.

The lower part 11a of the tubular piece 11 is preferably made from a synthetic resin material to ensure rigidity.
has a suitable wall thickness and the upper part 11b of the tubular piece 11 must also have sufficient stiffness so that it can be pushed downward without significant deformation. wall thickness. Between the two parts 11a, 11b there is an intermediate wall section 12 with reduced wall thickness. The wall section 12 weakened in this way is therefore elastically bendable and when downward pressure is applied to the section 11b of the tubular section 11,
The wall section 12 is folded and compressed, reducing the overall length of the tubular section 11.

The tubular piece 11 has an end 13 of its lower part 11a.
It has a central passageway 13 that opens to a and the upper end of the upper portion 11b. A conical inwardly tapered valve seat 13b is provided at the upper end.

An annular shoulder 14 projects radially inwardly from the wall of the tubular piece portion 11a below the wall section 12. The lower side of the shoulder portion 14 can be placed against the upper end surface of the valve body 2.

An elongated closure piece 16 is provided within the internal passageway 13 of the tubular piece 11. The blocking piece 16 is provided with a retaining pin 17 at or near its lower end.
Each pin 17 protrudes into a corresponding hole or annular groove 17a formed in the inner wall of the tubular piece portion 11a below the level of the wall section 12 and above the level of the shoulder 14 so as to protrude into the obstructing piece 16. The lower tubular piece part 1
1a to prevent relative axial movement of these parts. The blocking piece 16 is provided with a blocking head 18 at its upper end. The blocking head 18 has a lower side 18a projecting from the upper end of the central passageway 13 and having a beveled conical shape. The lower side 18a has a valve seat 1 around the discharge orifice of the central passage 13 in the closed position shown in FIG.
3b in a sealed manner.

A disk or pressure cap 19 is fixed to or integrally formed on the outside of the upper portion 11b of the tubular section. The cap 19 is connected to the upper part 1 of the tubular piece 11.
It acts as a finger rest for pressing or tilting 1b.
When the user actuates the tubular section 11 in this manner, the bendable wall section 12 is compressed uniformly or to one side, causing the upper tubular section section 11b to move generally axially downwardly and against the valve seat. The upper end of 13b is pulled away from the beveled surface 18a of the blocking head 18 to open an annular gap therebetween which constitutes the discharge orifice. Through this discharge orifice, the liquid discharge agent, in particular foam or paste, is transferred to the internal passage 13 of the tubular piece 11.
You can go outside. As soon as the upper part 11b of the tubular part 11 is pressed further, the bendable wall section 12 is pressed to the maximum on at least one side thereof, and the stiff lower tubular part part Inward pressure is applied via 11a,
Release valve 3 opens. The propellant in the pressurized container 1 in this case drives the ejected agent from the container 1 into the central passage 13;
The release agent present in the central passageway 13 is forced out through the release orifice 20.

When the pressure on the cap 19 is slightly released, the valve spring piece 7 mounted in the valve housing of the discharge valve 3 lifts the valve body 2 to its "closed" position, but the pressure on the cap 19 is further released. The wall section 12 then extends and presses the valve seat 13b at the upper end of the upper tubular section 11b in a sealing manner against the beveled opposing surface 18a of the closure head 18, sealing the discharge orifice 20 and opening the central passage. 13 to protect residual foam or similar emitting agents from the degrading effects of the atmosphere.

Even in its extended state, the bendable wall section 12 retains a slight initial bend and is subjected to a slight pre-pressure to bring the valve seat 13b into the beveled surface 18a.
Preferably, the discharge orifice 20 remains closed.

Instead of using a bendable wall section 12 as the actuating spring piece, as in the embodiment of FIGS. Sleeve 22
You may also use In this case the lower part 11a and the upper part 1 of the tubular actuating piece 11 are shown in FIG.
1b can be replaced by two stiff tubular sections 21a, 21b with a deformable sleeve 22 mounted between them.

Actuating piece 1 instead of disc or push cap 19
Two finger rests may likewise be provided on opposite sides of one.

As shown in FIGS. 4 and 5, another embodiment of the actuating device of the present invention is provided with a stiff tubular actuating piece which extends inwardly from the inner wall of the central tube passageway 33 as shown in phantom lines in FIG. An internal shoulder 34 is provided which projects a small distance above the top front surface 2a of the valve body 2 of the pressure vessel discharge valve 3. The central outflow slot 4 is connected to the longitudinal ribs 36a, 3 of the stiff block piece 36.
6b, 36c and ribs 36d (not shown), the longitudinally grooved lower end always freely communicates with the passageway 33 of the tubular actuating piece 30. The blocking piece 36 has a blocking head 38 having a conically obliquely cut blocking surface 38a on the lower side, similar to the embodiment of FIGS. 1 and 2. Closing surface 3
8a is associated with a conical inwardly tapered valve seat 30b at the upper end of the tubular actuating piece 30 when the discharge orifice 20 is closed between the two sealing surfaces 30b, 38a.

The spring piece interconnecting the closure piece 36 and the tubular actuation piece 30 includes an annular shoulder or shoulders 39 projecting inwardly from the inner wall of the central passageway 33;
It is formed by a slightly deformable arm 35 projecting radially from the closure piece 36 in a region slightly below its annular shoulder 39. Each arm piece 35
are upwardly sloped so that the free end of each arm piece 35 lies slightly above the underside of shoulder 39 prior to assembly of the actuator, and that the free end of each arm piece 35 rests on the shoulder in the closed position after assembly. The valve seat 30b of the tubular piece 30 is urged into sealing engagement with the opposing surface 38a of the blocking head 38 when pressed slightly.

When the actuating device is actuated by pressing the finger rest, disk, or cap 19 downward, the lower side of the annular shoulder 34 rests on the upper front surface 2a of the valve body 2, and at the same time, the valve seat 30b is moved away from the opposing surface 38a. Move away. The opposing surface 38a is connected to each rib 36a, 36b, 36 of the stiff closure piece 36.
When the outer end portions of cylindrical valves 36c and 36d firmly abut against the front surface 2a of the valve body 2, they remain in position and the discharge orifice 20 opens as an annular gap between the valve seat 30b and the blocking head 38.

When the lower side of the shoulder 34 comes into contact with the front surface 2a, the tubular piece 30 is further pushed and the valve body 2 is moved downward to open the discharge valve 3 (FIG. 5). From the pressurized container 1, a release agent is released from a discharge orifice 20 via an outflow slot 3 and a central passage 33 under the action of the propellant present in the container 1. (See dashed line D in FIG. 5).

For example, when trying to stop the release of a foam-like release agent, the user should press the cap with a finger.
When the pressure on 9 is released, the relatively strong valve spring piece 7 correspondingly biases the valve body 2 upwards and closes the valve 3. In this case also the tubular actuating piece 30 and the blocking piece 38 are both lifted into the position shown in solid lines in FIG. In this position the discharge valve 3 is closed, but the discharge orifice 20 is still open.

Furthermore, if the pressure cap 19 is completely released, it can then be lifted by the upward spring action of the free end of the arm piece 35 until the tube piece 30 seals off the discharge orifice 20.

During a short period of time between the closure of the discharge valve 3 and the closure of the discharge orifice 20, the foam or similar discharge agent portion that is no longer isolated from the propellant pressure is removed from the central passage 3.
Within 3, there is no pressure at all. When this shrunken release agent portion still extends out from the release orifice 20, the release agent does not have time to retreat and, for example, remains behind the release orifice 20 for a short period of time before the release orifice 20 also closes. Bubbles disappear in the central passage 33. That is, there is no suction of oxygen or bacteria from the outside air, and the degrading effect of the outside air on the residual release agent in the passageway 33 is avoided.

When the tubular actuating piece 30 is pressed again and the discharge orifice 20 and discharge valve 3 are successively opened, this residual foam forms a kind of elastic cushion. This resilient cushion prevents the pressurized release agent propelled through the release valve from ejecting too rapidly from the release orifice and is forced out of the release orifice with little or no excessive pressure.

The auxiliary spring leg 3 is designed to enhance the biasing action of the resilient arm piece 35 to close the discharge orifice 20 again.
1 can be provided on the lower side 30a of the tubular actuating piece 30. Each spring leg 31 supports a tubular actuating piece 30 on a dome part 6 which acts as a lid for the pressurized container 1 .

The actuating spring piece also includes the bendable wall section 12 of the embodiment of FIGS. 1 and 2 or 3 and the resilient arm piece 35 and inner tube of the embodiment of FIGS. 4 and 5. It may also be configured in combination with the shoulder portion 39. This embodiment is not illustrative.

In each of the embodiments shown in FIGS. 1, 2, 4 and 5, the entire actuating device requires only two relatively simple parts. These parts are made from inexpensive synthetic plastic materials such as polyethylene, polypropylene or polyvinyl chloride and can be manufactured to satisfactory precision by injection molding techniques. A narrow conical valve seat formed at the upper end of the tubular actuating part in conjunction with a similarly beveled closure head provides a satisfactory uniform seal with a relatively slight biasing action of the actuating spring element. Effect can be obtained.

The froth or similar release agent released upon opening of the actuator's release orifice is not required to overcome this biasing action, resulting in the undesirable rapid release agent release that plagues many known foam dispensing devices. never happens. At the same time, the residual froth part confined within the closed device is well protected against drying out or similar undesired changes in conditions.

A preferred embodiment of the discharge device of the present invention is as illustrated in FIGS. 6 and 7 with a discharge valve 3 of a conventional construction in a pressurized container 1 and substantially similar to the embodiment shown in FIGS. 1 and 2. It is equipped with an actuating device of the same structure. The same reference numerals have been used for similar parts of the actuator.

The same applies to the (common) parts of the discharge valve 3.

As is clear from a comparison of FIGS. 6 and 7, the relatively slight bending of the wall section 12 of the tubular actuating piece 11 causes the discharge orifice 20 to open before the discharge valve 3 opens.
is sufficient to open the annular gap, which widens when the discharge valve 3 also opens, as shown in FIG. This condition occurs, as shown in FIG. 7, when the propellant container causes pressurized release agent to flow from inside the container through the hole 3a in the bottom of the valve housing and the interior of this valve housing into the radial duct 2b.
The duct 2b is closed by a flexible sealing gasket 8 in the closed position, but is released by pressing the valve body 2 inwardly by a continuous downward movement of the tubular working piece 11 after compression of the wall area 12. be done. The propellant pressurized release agent then enters the central passage 13 of the tubular working piece 11 via the outlet slot 4 of the valve body 2 and finally exits through the discharge orifice 20 at the upper end of the tubular piece 11.

Also, as will be explained below, it does not matter whether the movement of the moving parts occurs in exact alignment or at a slight angle, that is, with one or the other of the moving parts tilted. The reason for this is that the sealing gasket 8 is biased against the valve body 2 by the uneven biasing action of the valve spring pieces 7.
This is because it tends to be slightly inclined.

In this embodiment of the discharge device, the upper tubular actuating piece portion 11b is made of polyethylene, polypropylene or
The cap 4 is preferably made integrally with the tubular section portion 11b from a sufficiently stiff material such as PVC.
0 is set. The cap 40 comprises a lid which is separated from the cap side wall 42 by an arcuate slot 43 over a major part of its periphery, for example two-thirds thereof, and has a lower rim part 44 attached in a conventional manner to the upper annular rim 1a of the wall of the container 1. A portion 41 is provided. The lid portion 41 preferably has an arc-shaped slot 43.
A pressing knob 45 protruding from a position adjacent to the center of
can be provided.

When finger pressure is applied to the pressure knob 45, the lid portion 41 tilts with its free side 41a facing down, but is held on the opposite side 41b integral with the cap side wall 42. The downward bending of the lid section 41 causes a downward axial component to be transmitted to the upper tubular section section 11b and to the foldable wall section 12. The wall section 12 has a side 41 of its lid part 41.
The side corresponding to a is strongly compressed, but the opposite side is compressed more weakly. However, this is sufficient to slightly open the discharge orifice 20 by creating an annular gap between the closure head 18 and the valve seat 13b at the upper end of the tubular working piece portion 11b. The fact that the gap forming the orifice is not uniform and is wider on the side corresponding to the side 41a of the lid part 41 and narrower on the opposite side is of no importance for the release of foam or the like.

A similar opening effect also applies to the upper tubular section portion 11b.
Apply finger pressure in the lateral direction to move the tubular piece portion 11b preferably from the side 41b of the lid portion 41 to the side 4.
Obtained by tilting in the direction of 1a.

If a further finger pressure is then applied to the pressure knob 45, the valve body 2 will correspondingly move inwardly, even if after the maximum pressure a uniform compression of the wall area 12 is obtained, and the discharge valve 3 will correspondingly move inwards. opens.

When finger pressure is released or stopped on the knob 45, the discharge valve 3 closes first, followed immediately by the discharge orifice 20.

In the embodiment shown in FIG. 8 of the inventive release device,
The lid of the cap 50, which is integral with the tubular actuating piece portion 11b, is not slotted and has a major part of its circumference near its junction with the cap side wall 52, e.g. 2/3 or 3/4 arcuate. It has areas of reduced thickness or grooves 53 or both. A pressure knob 55 is provided on the lid. The function of the pressing knob 55 is similar to that of the knob 45 of the lid portion 41 of the embodiment shown in FIGS. 6 and 7.

In the embodiment shown in FIG. 9, the cap 60 includes a cap sidewall 62 and a lid portion 6
1 is tapered in a conical shape and has an extremely thin thickness, so that finger pressure applied laterally to the tubular actuating piece portion 11b or perpendicularly to the conical portion 61 slightly pushes the tubular actuating piece portion 11b. is sufficient to deform the conical portion 61. The action of this release device is shown in Figures 6, 7 and 8.
The same is true for the discharge device shown in the figure.

In the embodiments shown in FIGS. 8 and 9, the bendable wall area 12 of the tubular working piece 11 is surrounded by a sleeve 56. In the embodiment shown in FIGS. Sleeve 56 is wall area 1
2. Prevent outward bending. In this case wall area 1
A somewhat stiffer spring action of 2 is obtained, and a somewhat better force is ensured on the valve body 2 through the inwardly bent wall section 12 from the slightly inclined upper tubular actuating piece portion 11b during actuation. It is transmitted to

In the embodiment of the ejection device according to the invention shown in FIG. 10, the entire tubular working piece 11 is surrounded by a sleeve 71 or jacket. The outer surface of the sleeve 71 is trapezoidal with the top above the discharge orifice 20. Sleeve 71 is held against upper tubular actuating piece portion 11b by circumferential ribs 72.
The ribs 72 project into corresponding annular grooves 73 formed in the inner wall 71a of the sleeve 71. The sleeve 72 and the annular groove 73 form contact means. In this way, axial sliding of the tubular actuating piece portion 11b within the sleeve 71 is prevented. Sleeve 71 has a conical outwardly downwardly flared flange portion 74 at its inner end. The flange portion 74 has its conical surface 74a connected to the lower side of the lid portion 75 of the cap 70. The lid portion 75 defines a center hole 75a having a diameter large enough to allow the upper portion of the flange portion 74 and the sleeve 71 projecting from the flange portion 74 outside the center hole to be significantly sloped.

When a tilting force is applied to the sleeve 71 by lateral finger pressure, the tubular actuating piece 11 along with the sleeve 71
is slightly tilted. In this way, the lower tubular actuating piece part 11a is held at the upper end of the valve body 2 by the strong force of the valve spring piece 7, and since the valve body 2 maintains its position relative to the actuating piece 11, the lower tubular actuating piece part 11a The tubular piece portion 11a slides slightly upward within the sloped sleeve 71. and upper tubular piece portion 11b
The sleeve 7 must be followed by a reliable connection with the sleeve 71 by the annular rib 73.
1, the foldable wall section 12 is folded inwards. At the same time, the block section 16 which has stiffness is the lower tubular section section 11.
a and the closing head 18 is lifted into the open position away from the valve seat 13.

At least on the side towards which the slope of the sleeve 71 and the upper tubular actuating piece portion 11b is inclined, the wall section 1
2, the downward pressure on the valve body 2 increases until it overcomes the biasing action of the valve spring piece 7 and the discharge valve 3 opens.

The conically tapered upper surface 74a of the flange 74 is provided with a protrusion 76 along its peripheral area to enhance inward movement of the sleeve 71 and upper tubular section portion 11b.

Of course, in this embodiment the sleeve 71 could also be omitted and the flange 74 could be attached directly to the tubular working piece 11. However, such attachment or connection must be above the foldable wall section 12, i.e. near the lower end of the upper tubular section portion 11b.

In order to prevent excessive tilting of the valve body 2 during the initial opening phase of the discharge orifice 20, the diameter of the inner wall near the lower end of the sleeve 71 may be bent as shown by the dashed line 77 in FIG. It may begin at or just below the lower end of the area 12 and widen slightly towards said lower end.

Advantageously, all parts of the actuating device according to the invention and many parts of the discharge valve are made of synthetic resin material. Sleeve 56 may be made of metal. The valve spring piece 7 is also suitably made from steel wire.

The optimal embodiment of the elastically bendable wall section 12 must satisfy several requirements. The wall section is easy to make by injection molding. In this case, the mold core can be easily removed. This structure is easy to install and prevents the retaining pins of the closure pieces from becoming disengaged. In this case, it must also produce a satisfactory spring effect (elasticity) which reliably seals the discharge orifice 20 even with the application of pre-pressure during long storage periods during attachment to the discharge valve of a pressurized container filled with wall area 12. .

To meet these requirements, the preferred construction of the wall section 12 and the lower adjacent section, including the annular groove 17a, extends in a plane substantially perpendicular to the longitudinal axis of the tubular section 11. Annular groove lower wall 17b
Equipped with

The upper wall 17c of the annular groove 17a is preferably part of a conical sleeve having an inclination of about 45 DEG to the longitudinal axis. In this way, the closure piece 16 is axially closed when the discharge orifice 20 is opened or closed.
The mold core can be pulled upward with a force several times the force applied to the holding pin 17.

Although the present invention has been described in detail with reference to its embodiments, it is obvious that the present invention can be modified in various ways without departing from its spirit.

[Brief explanation of the drawing]

FIG. 1 is an axial sectional view showing a first embodiment of the actuating device of the present invention in a closed position, and FIG. 2 is an axial sectional view showing the first embodiment of the actuating device of the present invention in an open position. FIG. 3 is a partial axial sectional view of an embodiment similar to FIGS. 1 and 2 but with a different structure of the actuating spring piece, and FIGS. 4 and 5 are still further embodiments of the actuating device. FIG. FIG. 6 is a perspective view, partially shown in axial section, of the discharge device of the present invention equipped with the actuating device shown in FIGS. 1 and 2 in the closed position, and FIG. FIG. 2 is a perspective view showing a partially axial section in the state of FIG. 8, 9 and 10 are perspective views, partially in axial section, of second, third and fourth embodiments, respectively, of the ejection device of FIG. 6 in the closed position. 1... Pressurized container, 2... Valve body, 3... Release valve,
4...Outflow slot, 7...Valve spring piece, 8...Valve seat, 10...Self-sealing actuation device, 11...Tubular actuation piece, 12...Bendable wall section, 13...
Central passageway, 16...Block piece, 18...Block head, 20...Discharge orifice.

Claims (1)

[Scope of Claims] 1 (i) A liquid product is produced by a propellant in a pressurized container 1
(ii) passing the liquid product from the interior of the pressurized vessel 1 into the interior of the valve housing; (iii) biased axially outwardly within said self-closing discharge valve 3 by a valve spring piece 7 carried within the valve housing of said self-closing discharge valve having a hole 3a for causing said self-closing discharge valve;
(a) an outflow slot 4; and (b) said self-closing discharge valve 3 in a closed position preventing passage of liquid product and propellant from the interior of said valve housing into said outflow slot 4.
a radial duct 2b which is closed by an elastic sealing gasket 8 when the
(iv) by passing the duct 2b into the interior of the valve housing and releasing it from engagement with the sealing gasket 8, the liquid product is
A self-sealing actuation device adapted to be attached to the free end 2a of the valve body 2, which is adapted to be movable axially inwardly under actuation pressure so as to be able to pass into said outflow slot 4. 10, a tubular passageway 13, 33 for liquid product discharge, suitable for alignment with said outflow slot 4;
and a discharge orifice 20 for the discharge of liquid product from said self-sealing actuation device 10; a closure head 18, suitable for closing off the tubular passage 13, 33 by engaging the inner wall surface of this tubular passage 13, 33 as an external closure member; 38, said tubular passages 13, 33
a blocking piece 16, 36 housed within the tubular passageway, the tubular actuating piece 11, 30 and the blocking piece 16, 36 being mutually biased toward a tubular passage blocking position. Automatic seal actuator 10 consisting of
, wherein the external closing member has its valve seats 13b, 30b
the valve seats 13b, 30b and the annular surfaces 18a, 38a are provided with downwardly tapered annular surfaces 18a, 38a on the blocking heads 18, 38; 1
8a, 38a into sealing contact with each other.
1, 30 and said closure pieces 16, 36, acting simultaneously on said tubular actuating piece and on said closure piece 16, 36, for said valve spring piece; The spring means 12, 22, 35 are provided separately from the valve body 2.
By positioning the self-closing discharge valve 3 outwardly above the free end 2a, the self-sealing actuator 10 is activated after the self-closing discharge valve 3 has been installed in the pressurized vessel 1 and placed in the closed state. Free end 2 of body 2
An automatic sealing device characterized in that it can be attached to a. 2 adjacent to said spring means 12, 22, 35, said annular surface 18a, 38a and said valve seat 13b;
30b and located outwardly of the free end 2a of the valve body 2 at at least the same height as the spring means 12, 22, 35 and the closure piece 16, 36 in engagement with said tubular actuating pieces 11, 30, said blocking pieces 16, 36 and said tubular actuating pieces 11, 30 being assembled. the annular surface area of said locking means closest to the engaged retaining position and said closing head 18, when in the closed position;
The axial distance between the annular surfaces 18a and 38a of 38 is the axial distance between the annular surfaces 18a and 38a of the In the assembled state, the spring means 12, 22, 35 are deformed to bias the closure head 18, 38 against the annular surface area. 18
3. The automatic seal actuating device according to claim 1, wherein the valve seats 13b, 30b are pressed against and in contact with the valve seats 13b, 30b in a sealed manner. 3 said blocking piece 16 is fixedly housed within said tubular passageway, said fixing means (i) being rigidly connected to said blocking piece 16 and preventing the open free movement of said tubular actuating piece 11; (ii) an annular groove 17a extending radially within said tubular passageway 13 into a fixed area of said tubular passageway spaced axially from said valve seat 13b at the end; An upper wall 17b and a lower wall 17 are arranged in this tubular actuating piece 11 in the vicinity of the open inner end 13a and are bent towards the free end 2a of the valve body 2.
c, between an open position and a closed position in the area between said spring means 12 and the valve seat 13b of the open free end of said tubular actuating piece 11;
3. The automatic seal actuating device according to claim 2, wherein the tubular actuating piece 11 is axially displaceable relative to the blocking piece 16. 4. The spring means is connected to the upper wall and the lower wall 17.
By virtue of the elastically bendable wall section 12 located above b, 17c, when a force is applied to the tubular actuating piece 11, the wall section 12 is correspondingly compressed. 4. A self-seal actuating device according to claim 3, characterized in that said tubular actuating piece (11) is axially shortened so that said closure head (18) releases said discharge orifice (20). 5. said blocking piece 16 is integrally made of a hard synthetic plastics material, said tubular actuating piece comprises two rigid tubular pieces 21a, 21b, each made integrally of a hard synthetic plastics material; an annular sleeve 22 made of a synthetic or natural plastics material which is deformable to
1b has the discharge orifice 2 at one end thereof.
0, the other end is joined to one end of the annular sleeve 22, and the other end of the sleeve 22 is joined to the other tubular piece 21a. Automatic seal actuation device as described in Section 1. 6 said closure piece 36 comprises a deflectable arm piece 35 projecting outwardly therefrom and constituting said spring means, said tubular passageway 33 being connected to an inner wall and connected to said arm piece 35; By providing an engaging shoulder 39, said arm piece 35 biases said tubular actuating piece 30 toward the closed position such that said arm piece 35 and said shoulder portion 39 together ,
3. The automatic seal actuating device according to claim 2, which constitutes said fixing means. 7 the tubular actuating piece 11 and the blocking piece 1
6. A self-sealing actuator as claimed in claim 1, wherein each of 6 and 6 are integral pieces made of synthetic plastic material. 8 (a) A valve body 2 having an outflow groove 4 and a sealing gasket 8, and said valve body 2 and said sealing gasket 8.
a valve spring piece 7 biasing the pressurized container 1 into the closed position, and used in conjunction with the pressurized container 1 to dispense a liquid product from the pressurized container 1 into a liquid, paste or foam by means of a propellant. (b) (i) a self-closing discharge valve 3 which is intended to dispense a liquid product by means of a propellant from said pressurized vessel 1 into said pressurized vessel in the form of a liquid, paste or foam; (ii) supported within the valve housing of the self-closing discharge valve having a hole 3a for passing the liquid product from the interior of the pressurized container 1 into the interior of the valve housing; axially outwardly biased within the self-closing discharge valve 3 by said valve spring piece 7 which is axially closed, and (iii) directs liquid product from the interior of said valve housing into said outflow slot 4; (iv) a radial duct 2b which is closed by the elastic sealing gasket 8 when the self-closing discharge valve 3 is in a closed position not allowing passage of propellant; An axially inward actuation pressure is applied to allow liquid product to pass into the outflow slot 4 by passage into the interior of the valve housing and release from engagement with the sealing gasket 8. The valve body 2 is configured to be movable below.
a self-sealing actuation device 10 suitable for being attached to the free end 2a thereof, and a tubular passage 13, 3 for liquid product discharge suitable for alignment with said outflow slot 4;
3 and a discharge orifice 20 for the discharge of the liquid product from said self-sealing actuator 10; at the open free end of said tubular actuator 11, 30; This tubular passage 13, 33 as an external closure of said tubular passage 13, 33
a closure piece housed within said tubular passageway 13, 33 having a closure head 18, 38 suitable for blocking said tubular passageway 13, 33 by engaging the inner wall surface of said tubular passageway 13, 33; 16,
36, wherein the tubular actuating pieces 11, 30 and the closing pieces 16, 36 are mutually biased toward the tubular passage closing position.
, wherein the external closing member has its valve seats 13b, 30b
the valve seats 13b, 30b and the annular surfaces 18a, 38a are provided with downwardly tapered annular surfaces 18a, 38a on the blocking heads 18, 38; 1
8a, 38a into sealing contact with each other.
1, 30 and said closure pieces 16, 36, acting simultaneously on said tubular actuating piece and on said closure piece 16, 36, for said valve spring piece; The spring means 12, 22, 35 are provided separately from the valve body 2.
By positioning the self-closing discharge valve 3 outwardly above the free end 2a, the self-sealing actuator 10 is activated after the self-closing discharge valve 3 has been installed in the pressurized vessel 1 and placed in the closed state. Free end 2 of body 2
An automatic seal actuating device, characterized in that it can be attached to a, and a discharging device comprising: 9 adjacent to said spring means 12, 22, 35, said annular surface 18a, 38a and said valve seat 13b;
30b and located outwardly of the free end 2a of the valve body 2 at at least the same height as the spring means 12, 22, 35 and the closure piece 16, 36 in engagement with said tubular actuating pieces 11, 30, said blocking pieces 16, 36 and said tubular actuating pieces 11, 30 being assembled. the annular surface area of said locking means closest to the engaged retaining position and said closing head 18, when in the closed position;
The axial distance between the annular surfaces 18a and 38a of 38 is the axial distance between the annular surfaces 18a and 38a of In the assembled state, the spring means 12, 22, 35 are deformed to bias the closure head 18, 38 so that the annular surface 18a, 3
8a is pressed against and in sealing contact with the valve seats 13b, 30b, the blocking piece 16 is fixedly housed within the tubular passage, and the fixing means includes: (i) the blocking piece 16; 16 and the valve seat 1 at the open free end of the tubular actuating piece 11
an annular groove 17a extending radially within said tubular passageway 13 into a fixed region of said tubular passageway spaced axially from 3b; and (ii) an open inner end of said tubular working piece 11. 13a and comprising upper and lower walls 17b, 17c arranged in this tubular actuating piece 11 and bent towards the free end 2a of said valve body 2, said spring means 12 and said tubular actuating piece 1
1 between the open free end and the valve seat 13b of the tubular actuating piece 11 relative to the blocking piece 16 between an open position and a closed position.
axially displaceable, and the spring means is connected to the upper and lower walls 17.
b, 17c by an elastically bendable wall section 12 located outwardly above
When a force is applied to the tubular actuating piece 11,
A self-sealing actuator, characterized in that the wall section 12 is compressed and the tubular actuating piece 11 is correspondingly shortened axially, so that the blocking head 18 releases the discharge orifice 20. 9. A release device according to claim 8, comprising: 10 The valve spring piece 7 and the spring means 12, 2
2, 35 between the opening of the discharge orifice 20 of the self-sealing actuator 10 and the opening of the self-closing discharge valve 3 on the one hand, and the biasing force difference between the Discharge device according to claim 8 or 9, characterized in that there is a delay between the closing of the discharge orifice (20) and the closing of the self-closing discharge valve (3). 11. Disengagement of the valve body 2 from the sealing gasket 8 against the action of the valve spring piece 7 is the earliest at which the blocking head 18 releases the discharge orifice 20 and forms an annular gap. 11. Discharge device according to claim 10, wherein the strength of the valve spring piece 7 and the strength of the spring means 12 are matched to each other so as to occur. 12 the closure piece 36 comprises a deflectable arm piece 35 projecting outwardly therefrom, the tubular passageway 33 engaging an inner wall and the arm piece 35 projecting inwardly from the inner wall; Shoulders 39 as seating means are provided so that when the tubular actuating piece 30 is moved axially inwardly relative to the blocking piece 36, the arm piece 35 biasing the piece 30 towards the closed position, said tubular passageway 33 having an inwardly projecting annular shoulder 34 which, in the closed position, connects said outflow slot; 4 and spaced above the valve body 2 and in the open position, the annular shoulder 34 engages the valve body 2 and counteracts the action of the valve spring piece 7. 9. The discharge device according to claim 8, wherein the self-closing discharge valve 3 is opened by pushing down the valve body 2. 13 such that the tubular actuating piece 11 is provided with elastically bendable wall sections 12, 22 which act as external closing spring means to disengage the blocking head 18 from the discharge orifice 20; When applying a force to the tubular actuating piece 11, the wall sections 12, 22 are compressed and correspondingly shorten the tubular actuating piece 11 in the axial direction, so that the blocking piece 16 shortens it in the axial direction. A retaining pin 17 is provided for rigid fixation within the tubular working piece 11, which retaining pin 17 is provided in a section of the tubular working piece 11 on the side of the wall section 12 remote from the discharge orifice 20. engaging the actuating piece and pushing the valve body 2 against the action of the valve spring piece 7;
Discharge device according to claim 8, characterized in that the self-closing discharge valve (3) is opened when a further force is applied to the tubular actuating piece (11) in a direction towards. 14 a contact in which said tubular actuating piece 11 is connected to an outer sleeve 71 around said tubular passage 13 and in a region of said sleeve 71 between said discharge orifice 20 and said wall section 12; 14. The ejection device according to claim 13, further comprising means 72 and 73, and wherein said contact means can be depressed with a finger. 15 said self-closing discharge valve 3 is provided with attachment means 6 suitable for attaching it to said pressurized container 1, said sleeve 71 is provided with a finger cap 50, 60, 70 with a periphery, and said sleeve 71 is provided with a finger cap 50, 60, 70 with a periphery; By firmly connecting the cap side walls 52, 62 of the cap to the attachment means 6, finger pressure can be applied to the finger caps 50, 60, 70 to move the tubular actuating piece 11, thereby moving the tubular actuating piece 11 into the wall area. 12 toward an open position, the valve body 2 of the self-closing discharge valve 3 is configured to be tiltable, and the wall section 20 is compressed to an extent sufficient to open the discharge orifice 20. 15. The discharge device according to claim 14, wherein the valve body 2 is later tilted. 16 The tubular actuating piece 11 and the cap 5
16. The dispensing device according to claim 15, wherein the parts 0, 60, and 70 are integrally made of synthetic plastic material. 17 The cap 50 includes a lid and a cap side wall 52, the periphery of the lid is connected to the cap side wall 52 by a bridge portion, and the remaining portion of the lid and the cap side wall are connected in an arcuate manner. Discharge devices according to claim 15 or 16, separated from each other by grooves 53.