JP6099245B2 - Spout unit for content discharge port shut-off, content discharge port shut-off mechanism incorporating this spout unit, and pump-type product and aerosol-type product using this content discharge port shut-off mechanism - Google Patents

Description

  The present invention is a content incorporated into an actuator cap that functions as a content discharge operation member and that has a closed-circular-shaped side opening that conforms to the external shape of the projecting nozzle for content discharge. The present invention relates to a spout unit for discharge port shutoff, a shutoff mechanism using the spout unit, and the like.

  Such a spout unit and a shut-off mechanism of the present invention are used for both pump-type products and aerosol-type products.

In particular, a stem holder to which the stem is attached,
A spout that interlocks with the stem holder after the content discharge port of the protruding nozzle shifts from the closed state to the open state by the shut-off operation at the initial stage of the content discharge operation,
A shut-off drive unit on the rear side, which is obtained by dividing and shortening the entire valve member for shut-off operation with respect to the content discharge port;
An elastic member for biasing the shut-off drive unit toward the contents discharge port;
This relates to a spout unit that incorporates a total of four components.

  The basic feature is that the valve member for the shut-off operation that jumps out from the side opening (opening to which the protruding nozzle is attached) of the closed loop shape of the actuator cap is divided, and the rear shut-off drive part is spouted. That is the target of the unit.

  Thereby, the projection shape when the spout unit is viewed from above is set to a size that can be incorporated into the interior of the actuator cap from the lower opening.

  Note that the front moving valve after dividing the valve member and the protruding nozzle shut off by the moving valve in the stationary mode are attached to the spout and the like from the side opening portion of the closed loop shape of the actuator cap after the spout unit is assembled.

  In the present specification, regarding the positional relationship between the front and rear, the content discharge port side is described as “front”, and the opposite side, for example, the convex portion side is described as “rear”. That is, the left side of FIGS. 2 to 4 is “front” and the right side is “rear”.

  The present applicant, in the shut-off mechanism provided in the pump-type product or aerosol-type product, simplifies the assembly work of the valve member for the shut-off operation, stabilizes and ensures the cam operation of the valve member, and the valve In order to ensure the sealing performance during the movement of the member, it has been proposed to divide the valve member for shutoff operation into its front part and rear part (see Patent Document 1).

In this shut-off mechanism, the valve member for shut-off operation is
-The front part (corresponding to the transfer valve of the present invention) including the reverse skirt part that sets the content passage area is composed of a soft material member,
-The cam follower of the rear part (corresponding to the shut-off drive part of the present invention) that is formed outside the content passage area and does not affect the contents is made of a hard material suitable for cam operation.

JP 2011-88663 A

  The proposed shut-off mechanism pays attention to the difference in the roles of the front and rear parts of the valve member for the shut-off operation, and changes the material of the front side constituting the content passage area and the rear side not constituting the passage area. Thus, the valve member as a whole has the advantage of ensuring the sealing performance and stabilizing the cam operation.

  The present invention further examines the idea of dividing the valve member for such a shut-off operation into the front and the rear, a stem holder, a spout, a shut-off drive part (the rear part of the valve member with respect to the content discharge port), and the shut It pays attention to the fact that a total of four parts of the elastic member (for example, coil spring) for off biasing can be unitized.

  This unitization creates a final shut-off mechanism by incorporating the stem holder, spout, valve member (front moving valve + rear shut-off drive unit), elastic member and protruding nozzle into the actuator cap. The purpose is to simplify and improve the assembly work.

  It is another object of the present invention to ensure the management of each member in the assembly process of the shut-off mechanism.

The present invention solves the above problems by using the following spout unit and the like.
(1) A shape that acts as a content discharge operation member and matches an external portion to be assembled (for example, a large-diameter horizontal cylindrical portion 8b to be described later) of a protruding nozzle (for example, a protrusion nozzle 8 to be described later) for content discharge. Stem holders (for example, a stem holder 2 described later), spouts (for example, a spout 3 described later) before being assembled into an actuator cap (for example, an actuator cap 9 described later) having a side opening (for example, a circular opening 9b described later). ), A shut-off drive unit (for example, a later-described shut-off drive unit 6) and an elastic member (for example, a later-described coil spring 7). It met spout unit of use,
The stem holder is
A first holding part (for example, a front upright part 2f and a rear upright part 2d described later) for holding the spout in a vertically movable state;
A cam actuating portion (for example, an upper end tapered surface 2e described later) for shut-off operation at an initial stage of the content discharge operation of the actuator cap;
A vertical cylindrical portion (for example, a lower vertical cylindrical portion 2a described later ) to which a content passage stem (for example, a stem 1 described later) that operates according to the content discharge operation is attached ;
The spout is
A content passage area (for example, an upper vertical cylindrical portion 3a and a hole portion 3j described later) extending from the stem holder;
A second holding part (for example, a horizontal plate-like part 3n described later) exhibiting a holding action between the first holding part,
A first engagement portion (for example, a convex portion 3m described later) that prevents the shut-off drive portion from dropping backward in a spout unit state before being incorporated into the actuator cap,
And wherein incorporated into the stem holder movably in the vertical direction, the closed early stage of the shut-off operation by content discharge outlet of said projecting nozzle (e.g. below the content discharge outlet 8a) until it After shifting from the state to the open state, in conjunction with the stem holder , interlocking downward ,
The shut-off drive unit is
A cam driven surface (for example, a downward tapered surface 6b described later) that responds to the cam operating portion in the initial stage;
A second engagement portion (for example, a concave through-hole 6c described later) that prevents the rearward drop-out of the spout unit by the engagement with the first engagement portion when in the spout unit state;
Similarly, when in the spout unit state, a contact portion (for example, a cam driven portion 6a and a downward taper surface 6b described later) is provided to prevent the front portion from falling off by the contact action with the spout side.
In addition, the spout includes a rear member that is formed by dividing the front and rear of a valve member (for example, a valve member 4 described later) that shifts the content discharge port from the closed state to the open state in the initial stage . It is incorporated into a cylindrical part (for example, an outer horizontal cylindrical part 3g described later) in a state in which it can move in the front-rear direction from the rear side to the front side,
The elastic member is
The valve member after being installed in the actuator cap is disposed between the cylindrical portion inner peripheral surface of the spout and the outer peripheral surface of the shut-off drive unit , and the valve member after being incorporated into the actuator cap and biased toward,
Each of the above components is
Incorporating the spout on the stem holder, and, in a state incorporating the shut-off drive and the elastic member into the spout,
The projected shape when seen from above as a whole is set to the size of the shape incorporated into the actuator cap from the lower opening (for example, the lower opening 9g described later),
The thing of a structure aspect is used.
(2) In (1) above,
The spout is
Min the cylindrical portion of the shut-off for operating,
The holding portion of the projecting nozzle (e.g. outer lateral cylindrical portion 3g described later), includes a,
The shut-off drive and the elastic member was respectively incorporated in the cylindrical portion minutes,
The thing of a structure aspect is used.
(3) In the above (1) and (2),
The contact portion is
Ru Ah in shared portion between the cam follower surface,
The thing of a structure aspect is used.
(4) In the above (1), (2), (3),
The first holding part is
Ru standing part der for guiding the second holding portion movably in the said vertical direction,
The thing of a structure aspect is used.
(5) In the above (1) to (4) incorporating the spout unit according to the actuator cap to one of the content discharge outlet shutoff mechanism,
The actuator cap is
The lower opening (for example, the lower opening 9g described later) for incorporating the entire spout unit into the internal space region;
Incorporating a moving valve (for example, moving valve 5 described later) that is composed of a front side member that is formed by dividing the front and rear sides of the valve member and exhibits a shut-off action of the content discharge port, and, with the side opening (for example below the circular opening 9b), for incorporating the projecting nozzle with the content discharge outlet,
The thing of a structure aspect is used.

  A spout unit for the content discharge port shut-off having such a configuration, a content discharge port shut-off mechanism incorporating the spout unit, and a pump-type product and an aerosol-type product using the content discharge port shut-off mechanism Is the subject of the present invention.

The present invention takes the above problem solving means,
(11) Easy assembly work when creating the final shut-off mechanism by incorporating the stem holder, spout, valve member (moving valve + shut-off drive unit), elastic member, and protruding nozzle into the actuator cap And efficiency improvement,
(12) The management of each member in the assembly process of the shut-off mechanism can be ensured.

It is explanatory drawing which shows the perspective state of the spout unit (the below-mentioned stem holder 2 + spout 3 + shut-off drive part 6 + coil spring 7) of this invention. It is explanatory drawing which shows the cross-sectional state of the stationary mode of the shut-off mechanism using the spout unit of FIG. It is explanatory drawing which shows the cross-sectional state of the transition stage to the operation mode of the shut-off mechanism of FIG. It is explanatory drawing which shows the cross-sectional state of the operation mode of the shut-off mechanism of FIG.

  The best mode for carrying out the present invention will be described with reference to FIGS.

  As described above, the present invention is intended for pump-type products and aerosol-type products, but the following description assumes the case of a pump-type product for convenience of explanation.

  It should be noted that the constituent elements of the following reference numbers with alphabets (for example, the lower vertical cylindrical portion 2a) indicate that they are part of the constituent elements (for example, the stem holder 2) of the reference numeral numbers.

1 to 4,
1 is a component of a well-known pump mechanism, and is a cylindrical stem (piston) which is urged upward by a strong elastic force of a coil spring (not shown) and has a content passage area;
2 is a stem holder that fits and holds the outer peripheral surface of the upper end side of the stem 1 and allows the contents from the stem to pass through.
2a is a lower vertical cylindrical portion for fitting and holding the outer peripheral surface of the upper end side of the stem 1,
2b is a reverse skirt portion formed in a form continuous from the lower vertical cylindrical portion 2a and in close contact with the inner peripheral surface of the upper vertical cylindrical portion 3a described later,
2c is a ring-shaped portion formed at the boundary between the lower vertical cylindrical portion 2a and the reverse skirt portion 2b;
2d is a pair of rear upright portions for operating the cam, which are formed in a so-called left-right symmetric position around the diameter equivalent line of the ring-shaped portion 2c,
2e is an outwardly-decreasing upper end tapered surface that exhibits the cam action of the rear standing portion 2d.
2f is an inner end side of the ring-shaped part 2c and is formed at the left-right symmetrical position in the front part of the rear upright part 2d, and in the vertical direction between the stem holder and the spout 3 described later at the spout unit stage. A pair of front erection parts exhibiting a drop-off preventing action and exhibiting a positioning action in the front-rear direction and the lateral plane rotation direction of the stem holder with respect to the spout (cooperation action with the rear upright part 2d in the rotation direction). ,
2g is an outward locking action part formed on the upper end side of the front upright part 2f,
2h is an outwardly inclined surface formed on the outer surface of the upper surface of the outward locking action portion 2g,
2j is formed in the vertical direction on the outer end side of the ring-shaped portion 2c, so that the stem holder is rotated by a locking action with a vertical rib-shaped portion 9e of an actuator cap 9 described later in the product stage after final assembly. Two notch parts (vertical concave parts) for determining the directional phase,
Respectively.

Also,
3 is a spout which is attached to the outer peripheral surface of the upper end side of the reverse skirt portion 2b so as to be movable up and down corresponding to the shut-off operation, and has a content passage area and a space area for the shut-off operation,
3a is an upper vertical cylindrical portion whose inner peripheral surface is in intimate contact with the tip portion of the reverse skirt portion 2b and acts as a content passage area;
3b is a horizontal cylindrical portion that is formed in a non-communication manner next to the upper vertical cylindrical portion 3a and provides a space area for shutoff operation;
3c is a circular rear opening formed on the rear end side of the horizontal cylindrical portion 3b to enable movement of a later-described shut-off drive portion 6 (large diameter drive portion 6e) in the front-rear direction;
3d is a front continuous portion of the rear opening 3c, and a small-diameter annular step portion for receiving a coil spring 7 described later,
3e is a small-diameter inner peripheral surface that temporarily holds the coil spring 7 in the spout unit stage following the front side from the small-diameter annular step 3d.
3f is a large-diameter inner peripheral surface that guides the movement in the front-rear direction in close contact with the later-described movement valve 5 from the small-diameter inner peripheral surface 3e to the front side.
3g is an outer horizontal cylindrical part formed outside the outer peripheral surface front side part of the horizontal cylindrical part 3b in a mode including a common part with the upper vertical cylindrical part 3a,
3h is a bottomed annular concave portion set between the horizontal cylindrical portion 3b and the outer horizontal cylindrical portion 3g,
3j is a bottom part of the ring-shaped concave part 3h so as to form a bottom part, and a hole for passing contents formed in a part common to the upper vertical cylindrical part 3a,
3k extends to the outside in the longitudinal direction of the rear uppermost part of the outer peripheral surface of the horizontal cylindrical portion, and then aligns in the rotational direction in the horizontal plane of the shut-off drive unit 6 described later and guides when moving in the front-rear direction. A vertical plate-shaped rail action part exhibiting
3m is formed at the rear end portion of the lower surface of the rail action part 3k, and prevents the shut-off drive part from falling backward by the engaging action with a recessed through part 6c of the shut-off drive part 6 described later in the spout unit stage. Convex parts to
3n is a table for holding the spout on the stem holder 2 formed on the outer side of the upper vertical cylindrical portion 3a so as to have a symmetrical shape centered on the rail action portion 3k when the spout is looked down from above. A pair of horizontal plate-like parts,
3p is a vertically penetrating portion formed at the front inner corner portion of the horizontal plate-like portion 3n and having an engaging and holding action in which the outward locking action portion 2g of the stem holder 2 enters.
Respectively.

Also,
4 is a valve member that exhibits an on / off action of the shut-off operation in accordance with each operation of setting and releasing the operation mode (= moving valve 5 + shut-off drive unit 6),
5 is a sheath-like moving valve constituting the front side portion of the valve member 4;
5a is a valve action part that is formed on the front end side of the moving valve and opens and closes a content discharge port 8a described later,
5b is a skirt that is formed on the rear side of the outer peripheral surface of the moving valve and is in close contact with the inner peripheral surface of the horizontal cylindrical portion 3b.
5c is an annular rear end surface that receives a front end portion of a coil spring 7 described later,
5d is an annular concave portion that is formed on the rear side portion of the inner peripheral surface of the moving valve and fits with an annular convex portion 6d of a shut-off drive unit 6 described later,
Respectively.

Also,
6 is a shut-off drive part that forms a rear part of the valve member 4 so as to be fitted to the moving valve 5 and moves in the front-rear direction based on a cam action between the stem holder 2 and the rear standing part 2d;
6a is a pair of cam followers formed symmetrically on the left and right sides of the rear end of the shut-off drive unit,
6b is a downward tapered taper surface that comes into contact with the upper end tapered surface 2e of the rear standing portion 2d and acts as a cam surface of the cam driven portion 6a;
6c is a concave penetration part in the upper front-rear direction that is formed between the pair of cam driven parts 6a and guides the rail action part 3k of the spout 3.
6d is an annular convex portion that is formed on the inner peripheral surface front side portion of the shut-off drive portion and fits with the annular concave portion 5d of the moving valve 5;
6e is a cylindrical rear side portion of the shut-off drive portion, and is a large-diameter drive (up to the front of the cam follower portion 6a) that is movable in the front-rear direction while being incorporated in the rear opening portion 3c of the spout 3. portion,
Respectively.

Also,
7 urges the valve member 4 (the moving valve 5 and the shut-off driving unit 6 integrated therewith) forward with a weak elastic force, so that the small-diameter annular step 3d of the spout 3 and the annular rear end surface 5c of the moving valve 5 Coil springs arranged between
8 is a protruding nozzle for contents discharge operation attached to the outer horizontal cylindrical portion 3g of the spout 3 in a fitted state;
8a is a content discharge port formed in the front end portion of the protruding nozzle,
8b is a large-diameter horizontal cylindrical portion to be assembled into an actuator cap 9 described later,
Respectively.

Also,
9 includes a stem holder 2, a spout 3, a valve member 4, a coil spring 7 and a protruding nozzle 8 in such a manner that the content discharge port side portion of the protruding nozzle protrudes, and the operation mode is set and released. Actuator cap consisting of a circular cross-section acting as a member, with a sheath-like shape as a whole,
9a is an operation surface (upper surface) that is pressed during the operation mode setting operation,
9b is a circular opening formed in the upper part of the peripheral surface of the actuator cap with a size that matches the outer shape of the large-diameter horizontal cylindrical portion 8b to which the protruding nozzle 8 is to be incorporated, and exhibits the holding action of the protruding nozzle ,
9c is formed in plural on the inner peripheral surface below the circular opening 9b, and a circumferential convex portion for preventing the actuator cap from coming off from the stem holder 2;
9d is formed at a substantially central portion of the ceiling surface of the actuator cap. After assembling, 9d abuts against the upper surface on the front end side of the rail action portion 3k and sandwiches both side surfaces, and the outer horizontal cylindrical portion 3g A concave drooping portion that abuts the upper rear portion,
9e is a pair of vertical rib-shaped portions that are formed in a long shape facing the front inner peripheral surface of the actuator cap and whose lower portion exhibits a locking action with the notch-shaped portion 2j of the stem holder 2 after assembly. ,
9f extends from the ceiling surface of the actuator cap in the vertical direction of the inner peripheral surface, and is formed at a position immediately before the vertical rib-shaped portion 9e to engage and hold the front end surface portion of the outer horizontal cylindrical portion 3g (the outer horizontal cylindrical shape). And an inverted U-shaped rib-shaped portion that sandwiches at least the lateral direction of the rear large-diameter portion of the protruding nozzle 8.
9g is a lower opening that acts as an entrance when the spout unit of FIG. 1 is assembled into the actuator cap.
Respectively.

Also,
10 is a cover cap provided with a guide function for each of the stem holder 2 and the spout 3 that move up and down by screwing into an opening of a container body (not shown) that contains various contents to be described later.
11 is a housing which is attached to the cover cap 10 and serves as a vertical movement space area of the stem 1 and a temporary storage area (the contents for the next discharge) of the container body contents, and a passage area;
Respectively.

Also,
D1 is the inner diameter D2 of the circular rear opening 3c of the spout 3 (horizontal cylindrical portion 3b) is the outer diameter (D1> D2) of the cylindrical large-diameter driving portion of the shut-off driving portion 6.
D3 is the outer shape of the ring-shaped portion 2c that is the longest straight line in the plane shape of the spout unit (the shape when the spout unit with the ring-shaped portion 2c, the horizontal plate-shaped portion 3n, etc. set in a horizontal state is seen from directly above). Diameter,
D4 is an inner diameter (D3 <D4) of an actuator cap 9 (excluding the circumferential convex portion 9c) having a circular cross section.
Respectively.

  Here, the stem 1, stem holder 2, spout 3, valve member 4 (moving valve 5 + shutoff drive unit 6), protruding nozzle 8, actuator cap 9, cover cap 10 and housing 11 are, for example, polypropylene, polyethylene, polyacetal, nylon , Made of plastic such as polybutylene terephthalate. The coil spring 7 is made of metal or plastic.

  As shown in FIG. 1, the spout unit according to the embodiment of the present invention is composed of a stem holder 2, a spout 3, a shut-off drive unit 6 and a coil spring 7, which are integrated with each other without any backlash. This is a unit structure.

The basic features of the spout unit in FIG.
(21) The valve member 4 is divided into a front moving valve 5 and a rear shut-off drive unit 6;
(22) The inner diameter D1 of the circular rear opening 3c of the spout 3 (horizontal cylindrical portion 3b) and the outer diameter D2 of the cylindrical large-diameter driving portion 6e of the shut-off driving portion 6 are “D1> D2. ”
(23) The members of the stem holder 2 and the spout 3 are integrated so as to be movable relative to each other in the vertical direction.
(24) The shut-off drive unit 6 is incorporated in the horizontal cylindrical part 3b and the rear opening 3c of the spout 3 in such a way that it can move in the front-rear direction and does not come out forward, and the shut-off drive part has a concave penetration. The integrated state after this assembly is maintained by the engaging action of the part 6c (the vertical side surface that follows from the rear part) and the convex part 3m of the rail action part 3k,
(25) The rear end portion of the coil spring 7 that drives the moving valve 5 forward is held by the small-diameter annular step portion 3d of the horizontal cylindrical portion 3b and the small-diameter inner peripheral surface 3e that continues to the front side thereof,
(26) The outer diameter D3 of the ring-shaped portion 2c that is the longest straight line in the planar shape of the spout unit is set smaller than the inner diameter D4 of the actuator cap 9 (excluding the circumferential convex portion 9c).
And so on.

The contents of (26) above concerning the spout unit in FIG.
When the spout unit in which the spout 3 is assembled on the stem holder 2 and the shut-off drive unit 6 and the coil spring 7 are incorporated in the horizontal cylindrical portion 3b of the spout is viewed from above (directly above). The projected shape is set to the size of the shape incorporated into the inside from the lower opening 9g of the actuator cap 9.
It can be said.

Between the stem holder 2 and the spout 3,
(31) The positional relationship between the front and rear direction and the rotational direction in the horizontal plane is defined by the engaging action of the front standing part 2f and the rear standing part 2d of the stem holder and the horizontal plate-like part 3n of the spout,
(32) The horizontal plate-like part 3n of the spout is sandwiched between the ring-like part 2c of the stem holder and the outward locking action part 2g, thereby restricting the range of relative movement in the vertical direction between them. Omission is prevented.

  Further, the shut-off drive unit 6 incorporated from the rear into the horizontal cylindrical part 3b of the spout 3 includes a cam driven part 6a, a rear end part of the horizontal cylindrical part, and a convex part of the rail action part 3k. Due to the individual engagement action with each of 3 m, dropping from the horizontal cylindrical portion is prevented.

  The relative movement range in the vertical direction of the stem holder 2 and the spout 3 in the spout unit of FIG. 1 in which all the above-described four components are assembled is the cam follower of the shut-off drive unit 6 in addition to the above (32). It is also regulated by the abutting action between the portion 6a and the rear standing portion 2d (upper end tapered surface 2e) of the stem holder.

  In order to combine the stem holder 2 and the spout 3, for example, the spout is guided from above the stem holder, and then the horizontal plate-like portion 3 n of the spout is brought into contact with the upright portion 2 d and the front upright portion 2 f as shown in the figure. Put it in shape.

At this time,
(41) If the lower end portion of the horizontal plate portion constituting the penetrating portion 3p (horizontal plate portion 3n) is in contact with the inclined surface 2h of the front standing portion 2f, it elastically deforms away from each other.
(42) With this elastic deformation, when the penetrating part 3p passes through the inclined surface 2h and moves to the bottom surface position of the outward locking action part 2g, the penetrating part and the outward locking action part are each before elastic deformation. Return to the original shape,
(43) By this restoration of the original shape, the portion following the penetrating portion 3p of the horizontal plate-shaped portion 3n is positioned below the outward locking action portion 2g, and the spout 3 has the horizontal plate-shaped portion of the stem holder 2 The state is set such that the front upright portion 2f does not come out upward.

  Further, in order to combine the shut-off drive unit 6 with the horizontal cylindrical portion 3b of the spout 3, for example, the shut-off drive unit is connected to the rear opening 3c of the horizontal cylindrical portion from the rear side of the shut-off drive unit (cam driven). What is necessary is just to insert the concave penetration part 6c of the part 6a) in the form guided by the rail action part 3k of the said spout.

At this time,
(51) The concave penetrating portion 6c of the shut-off drive portion 6 (cam driven portion 6a) and the convex portion 3m of the rail operating portion 3k abut against the convex portion from the front end portion of the concave penetrating portion, and are opposed to each other. Is elastically deformed by pushing
(52) If the concave penetrating part 6c passes through the convex part 3m with this elastic deformation, the concave penetrating part and the convex part are restored to the original shape before elastic deformation,
(53) By this original shape restoration, the shut-off drive unit 6 is in a state where the concave through-hole 6c of the cam follower 6a is located only on the front side of the convex part 3m of the rail action part 3k, that is, the rail action part 3k. It is set so that it does not come out backward from the convex portion 3m.

  As described above, the maximum outer diameter D2 of the front portion including the large-diameter drive portion 6e of the shut-off drive portion 6 is the inner diameter of the circular rear opening 3c into which the front portion enters when the spout unit is assembled. It is set smaller than D1.

  Therefore, the operator can incorporate the front part of the shut-off drive unit 6 into the horizontal cylindrical part 3b from the rear opening 3c of the spout 3.

To assemble the shut-off mechanism (the spout unit + moving valve 5 + protruding nozzle 8 + actuator cap 9 in FIG. 1) before being attached to the stem 1, for example:
(61) The actuator cap 9 is incorporated into the spout unit of FIG. 1 from above in such a positional relationship that the notch-like portion 2j of the stem holder 2 and the vertical rib-like portion 9e of the actuator cap match,
(62) Finally, after undergoing elastic deformation in the form of pushing the other side in the radial direction between the circumferential edge portion of the ring-shaped portion 2c of the stem holder 2 and the circumferential convex portion 9c of the actuator cap 9, The ring-shaped portion is held in a state where it enters the upper side of the circumferential convex portion, that is, the stem holder 2 is prevented from being removed from the actuator cap 9,
(63) Next, the moving valve 5 is inserted inside the circular opening 9b of the actuator cap 9, and the engagement between the ring-shaped concave portion 5d of the moving valve and the ring-shaped convex portion 6d of the shut-off drive unit 6 is performed. Keep in state
(64) Next, the protruding nozzle 8 is similarly inserted into the inside of the circular opening 9b of the actuator cap 9, and the outer peripheral surface of the large-diameter horizontal cylindrical portion 8b of the protruding nozzle and the outer horizontal cylinder of the spout 3 What is necessary is just to engage and hold the inner peripheral surface of the shape portion 3g.

  In this assembled shut-off mechanism, the downward taper surface 6b of the shut-off drive unit 6 abuts on the upper taper surface 2e of the stem holder 2 by the elastic action of the coil spring 7, and the valve action unit 5a of the moving valve 5 protrudes. The content discharge port 8a of the nozzle 8 is closed.

  In (61) above, the actuator cap 9 can be covered from above the spout unit of FIG. 1 by dividing the valve member 4 into a front moving valve 5 and a rear shut-off drive unit 6. The movement valve is discarded from the spout unit, and the outer diameter D3 of the ring-shaped portion 2c of the stem holder 2, which is the maximum length when viewed from directly above, is smaller than the inner diameter D4 of the actuator cap 9. Because.

  The operation itself of the shut-off mechanism (content discharge mechanism) shown in FIGS. 2 to 4 is well known for pump-type products and aerosol-type products.

here,
(71) The stem 1 and the stem holder 2 integrated therewith are urged upward by the elastic action of a well-known coil spring (not shown) disposed inside the housing 11,
(72) The valve member 4 formed of an integral part of the shut-off drive unit 6 and the moving valve 5 is urged forward (in the direction of closing the content discharge port 8a) by the elastic action of the coil spring 7 inside the spout 3. And
(73) The spout 3, the protruding nozzle 8 and the actuator cap 9 are, as a whole, a single body in a fixed state,
(74) The spout 3 or the like can move only in the vertical direction with respect to the stem holder 2,
(75) The actuator cap 9 has its concave hanging portion 9d abutting against the rail action portion 3k of the spout 3, etc.
(76) The shut-off drive unit 6 that is interlocked with the spout 3 in the vertical direction moves in the front-rear direction while the downwardly tapered surface 6b of the cam driven unit 6a follows the upper tapered surface 2e of the stem holder 2 (rear standing portion 2d). .

  In the stationary mode of FIG. 2, the stem 1 is moved upward by the action of a known coil spring (not shown), and the known pump actuating part discharge valve inside the housing 11 is set in a closed state. The content discharge port 8 a of the nozzle 8 is closed by a valve action portion 5 a of the moving valve 5 urged forward by the action of the coil spring 7. Therefore, the stored content of the stem 1 is of course not discharged from the content discharge port 8a to the external space area.

  The elastic force of the coil spring 7 is sufficiently smaller than that of a known coil spring (not shown) that urges the stem 1 and the stem holder 2 integrated therewith upward.

  As shown in FIG. 3, due to the difference in elastic force, when the actuator cap 9 in the stationary mode is pushed down, the valve member 4 (moving valve 5 + shutoff drive unit 6) first has its downward tapered surface 6b, It moves rearward based on the cam action between the upper end tapered surface 2e of the stem holder 2 in the still mode position.

  That is, the valve member 4 moves in the backward direction in which the valve action portion 5 a of the moving valve 5 is separated from the content discharge port 8 a of the protruding nozzle 8.

  At this time, the integrated body consisting of the stem 1 and the stem holder 2 remains in the substantially stationary mode position due to the strong elastic force of the coil spring (not shown).

  When the lower end of the upper vertical cylindrical portion 3a of the spout 3 that moves downward integrally with the actuator cap 9 comes into contact with the upper surface portion of the ring-shaped portion 2c of the stem holder 2, the valve member 4 is moved backward. The move ends.

  Thereafter, the stem holder 2 and the stem 1 integrated therewith are interlocked with the actuator cap 9 in the downward direction through the contact action between the ring-shaped portion 2c and the upper vertical tubular portion 3a.

  As shown in FIG. 4, the capacity of the storage space from the suction valve to the discharge valve of a known pump mechanism (not shown) provided in the housing 11 is reduced as the stem 1 is interlocked downward. The content pressure of increases.

  As a result of the increase in the content pressure, the suction valve of the pump mechanism is closed and the discharge valve is opened, and the stored content in the housing is “discharge valve—the internal passage area of the stem 1—the upper vertical cylindrical portion 3a. Through the internal passage area-hole 3j-projecting nozzle passage area between the protruding nozzle 8, the horizontal cylindrical portion 3b, and the moving valve 5, the content is discharged from the content discharge port 8a of the protruding nozzle 8 to the external space area.

  When the push-down operation of the actuator cap 9 is released, the stem 1, the stem holder 2, the spout 3 and the valve member 4 (moving valve 5) in the operation mode position are coil springs ( Strong elastic force (not shown) and the elastic action of the coil spring 7 (weak elastic force) disposed inside the spout 3 return to the stationary mode position.

  That is, as the stem 1 moves up, the capacity of the storage space of the pump mechanism increases and its internal pressure also decreases, so that the discharge valve is closed, and the valve action part as the moving valve 5 returns in the forward direction. 5a closes the content discharge port 8a of the protruding nozzle 8.

  The contents of the container body (not shown) flow into the storage space area where the internal pressure is reduced while opening the suction valve. This inflow content becomes the next discharge target.

  By adopting such a shut-off mechanism, that is, by adopting a configuration in which the content discharge port 8a of the protruding nozzle 8 is closed in the stationary mode in which the content discharge operation is not performed, the content is released when the operation mode is released. The contents remaining in the vicinity of the discharge port are prevented from being solidified by contact with the outside air.

  Further, as the openings on the peripheral surface and the upper surface of the sheath-like actuator cap 9, only the circular opening 9b having a size matching the outer peripheral surface of the large-diameter horizontal cylindrical portion 8b, which is a portion to which the protruding nozzle 8 is incorporated, is formed. By doing so, it is possible to reliably prevent the downward displacement of the protruding nozzle 8 after being assembled into the actuator cap 9 and to make the appearance of the entire shut-off mechanism smart without exposing the interior of the actuator cap 9 at all. I'm making things.

Of course, the present invention is not limited to the illustrated embodiment, for example,
(81) Set the stem 1 to the operation mode by tilting the actuator cap.
(82) An arbitrary elastic member such as a leaf spring is used instead of the coil spring 7;
You may do it.

  Pump type products and aerosol type products to which the present invention is applied include cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair restorers, cosmetics, Shaving foam, foods, droplets (such as vitamins), pharmaceuticals, quasi drugs, paints, horticultural agents, repellents (insecticides), cleaners, deodorants, laundry glue, urethane foam, fire extinguishers, There are various applications such as adhesives and lubricants.

  The contents stored in the container body can be in various forms such as liquid, cream, gel, etc. Examples of ingredients blended in the contents include powdered substances, oil components, alcohols, interfaces Activators, polymer compounds, active ingredients according to each application, water and the like.

  As the powder, metal salt powder, inorganic powder, resin powder, or the like is used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose, and a mixture thereof are used.

  As the oil component, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid and the like are used.

  Examples of the alcohol include monovalent lower alcohols such as ethanol, monovalent higher alcohols such as lauryl alcohol, and polyhydric alcohols such as ethylene glycol, glycerin, and 1,3-butylene glycol.

  Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and cations such as alkyltrimethylammonium chloride. A surfactant is used.

  As the polymer compound, methyl cellulose, gelatin, starch, casein, hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer, or the like is used.

  Active ingredients according to each application include antiphlogistic analgesics such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, insecticides and insect repellents such as pyrethroid and diethyltoluamide, and zinc oxide. Perfumes such as sweat agents, rose oil and linalool, deodorants such as plant extracts, refreshing agents such as camphor and menthol, anti-asthma drugs such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, epoxy resins, urethane, etc. Adhesives and paints, dyes such as paraphenylenediamine and aminophenol, fire extinguishing agents such as ammonium dihydrogen phosphate, sodium and potassium hydrogen carbonate, etc. are used.

  Further, other than the above-mentioned contents, suspending agents, ultraviolet absorbers, emulsifiers, humectants, antioxidants, sequestering agents, etc. can be used.

  As gas for injecting contents in aerosol type products, compressed gas such as carbon dioxide, nitrogen gas, compressed air, oxygen gas, rare gas, and mixed gas thereof, and liquefied gas such as liquefied petroleum gas, dimethyl ether, and fluorocarbon are used. .

1: Stem (piston)
2: Stem holder 2a: Lower vertical cylindrical portion 2b: Reverse skirt portion 2c: Ring-shaped portion 2d: A pair of rear upright portions 2e: A lower end upper tapered surface 2f: A pair of front upright portions 2g: Outward lock Action part 2h: Outwardly inclined surface 2j: Notched part (vertical concave part)

3: Spout 3a: Upper vertical cylindrical portion 3b: Horizontal cylindrical portion 3c: Circular rear opening 3d: Small-diameter annular stepped portion 3e: Small-diameter inner peripheral surface 3f: Large-diameter inner peripheral surface 3g: Outer horizontal cylindrical portion 3h: Bottom ring-shaped concave portion 3j: Hole portion 3k: Vertical plate-like rail action portion 3m: Convex portion 3n: A pair of horizontal plate-like portions 3p: Vertically penetrating portions

4: Valve member (moving valve 5 + shut-off drive unit 6)
5: sheath-like moving valve 5a: valve action part 5b: skirt part 5c: annular rear end face 5d: annular concave part 6: shut-off drive part 6a: pair of cam follower parts 6b: downward taper face 6c: downward Recessed through-hole 6d in the front-rear direction: Ring convex portion 6e: Large diameter drive

7: Coil spring 8: Protruding nozzle 8a: Contents discharge port 8b: Large diameter horizontal cylindrical portion 9: Sheath-shaped actuator cap 9a: Operation surface (upper surface)
9b: circular opening 9c: circumferential convex portion 9d: concave hanging portion 9e: pair of vertical rib-like portions 9f: inverted U-shaped rib-like portion 9g: lower opening 10: cover cap 11: housing

D1: Inner diameter D2 of rear opening 3c: Outer diameter of large-diameter drive portion 6e (D1> D2)
D3: outer diameter of ring-shaped portion 2c D4: inner diameter of actuator cap 9 (D3 <D4)

Claims (7)

Stem holder, spout, and shut-off drive before being assembled into an actuator cap that acts as a content discharge operation member and has a side opening that matches the external shape of the projecting nozzle for content discharge each parts and the elastic member consists of a separate each component, the whole meet spout unit for integrated content discharge outlet shutoff,
The stem holder is
A first holding part for holding the spout in a state in which it can move in the vertical direction;
A cam actuating part for shut-off actuating at an initial stage of the content releasing operation of the actuator cap;
A vertical cylindrical part to which a stem for passing contents that operates in accordance with the contents discharge operation is attached ;
The spout is
Contents passage area continuing from the stem holder;
A second holding part that exhibits a holding action between the first holding part,
A first engagement part for preventing the shut-off drive part from falling backward in a spout unit state before being incorporated into the actuator cap,
And wherein incorporated into the stem holder movably in the vertical direction, after the content discharge outlet of the projecting nozzle by shut-off operation of the initial stage has shifted from the closed state until then in the open state, the Interlocks downward with the stem holder in contact ,
The shut-off drive unit is
A cam follower surface responsive to the cam actuating portion in the initial stage;
A second engagement portion that prevents the rearward dropout of the spout unit state by engaging with the first engagement portion;
Similarly, when in the spout unit state, a contact portion that prevents the front of the spout from falling off by the contact action with the spout side,
And it consists of a rear member in the form of dividing the front and rear of the valve member that shifts the content discharge port from the closed state to the open state in the initial stage, and from the rear side to the cylindrical portion of the spout It is built in a state where it can move forward and backward,
The elastic member is
The valve member after being installed in the actuator cap is disposed between the cylindrical portion inner peripheral surface of the spout and the outer peripheral surface of the shut-off drive unit , and the valve member after being incorporated into the actuator cap and biased toward,
Each of the above components is
Incorporating the spout on the stem holder, and, in a state incorporating the shut-off drive and the elastic member into the spout,
The projected shape when viewed from the top as a whole is set to the size of the shape incorporated into the inside from the lower opening of the actuator cap,
A spout unit for shutting off the contents discharge port. The spout is
Min the cylindrical portion of the shut-off for operating,
And a holding portion of the projecting nozzle,
The shut-off drive and the elastic member are respectively incorporated into the tubular portion minutes,
The spout unit for shutting off the contents discharge port according to claim 1. The contact portion is
Ru Ah in shared portion between the cam follower surface,
The spout unit for shutting off the contents discharge port according to claim 1 or 2. The first holding part is
Ru standing part der for guiding the second holding portion movably in the said vertical direction,
The spout unit for shutting off the contents discharge port according to any one of claims 1 to 3. In the content discharge port shutoff mechanism in which the spout unit according to any one of claims 1 to 4 is incorporated in an actuator cap,
The actuator cap is
The lower opening for incorporating the entire spout unit into an internal space area;
Engaged with the shut-off drive unit incorporates a moving valve exhibiting shut-off effect of the content discharge outlet consists front member in the form obtained by dividing the front-rear of the valve member, and, with the content discharge outlet The side opening for incorporating the protruding nozzle.
A content discharge port shut-off mechanism characterized by the above. Comprises a content discharge outlet shutoff mechanism according to claim 5, and were yield volumes of contents in the container body,
This is a pump-type product. Comprises a content discharge outlet shutoff mechanism according to claim 5, and the injection gas and contents in the container body and yield capacity,
Aerosol type product characterized by that.

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