JP4877669B2 - Pump nozzle head - Google Patents

Description

  The present invention relates to a nozzle head of a pump that is assembled to a top tube portion of a container body that contains a content liquid and that dispenses the content liquid by a pressing operation.

A pump that shampoos, rinses, body soaps, hand soaps, and also contains liquids such as cosmetic liquids and dispenses liquids by pushing down the nozzle head. It is assumed that the nozzle cylinder is relatively large and extends laterally outward, so that the content liquid poured out is directly poured into the palm.
Japanese Patent Laid-Open No. 09-012052

  As shown in FIG. 5, the general structure of the nozzle head of the pump described above extends laterally outward while slightly descending to the side surface of the head body 2 whose upper surface is a pressing surface by hand. A nozzle cylinder 3 is provided, and a head neck cylinder 6 in which a nozzle passage 4 of the nozzle cylinder 3 is opened at an upper end portion of the head body 2 and a valve pressing piece 7 located at the center of the head neck cylinder 6 are suspended. It is configured.

  This nozzle head 1 is a part of the main part of the pump, and is fitted to the upper end portion of a stem 9 with a ball valve 10 in a tightly and immovably fitted manner with its head neck tube 6. Due to the downward displacement of the stem 9 accompanying the depression, the ball valve 10 is opened to suck up the content liquid, and the sucked up content liquid is poured out through the nozzle cylinder 3 to a target location.

  The nozzle cylinder 3 of the nozzle head 1 is formed with a relatively large extension length so that the content liquid can be poured directly into the palm. Specifically, the nozzle cylinder 3 extends. The end is formed with an extension length that can be as close as possible to an imaginary extension surface of the outer peripheral surface of the body portion of the container body.

  In addition, the combination of the guide cylinder 8 provided in the nozzle head 1 and the support cylinder 11 provided on the main body portion side of the pump stably stabilizes the up-and-down displacement posture of the nozzle head 1 without inclining to the illusion. It is for keeping constant.

  However, in the above-described prior art, after the content liquid is poured out by the pump operation, a part of the content liquid remains in the nozzle cylinder 3 to generate a residual liquid e. Since the extension length of the tube 3 is large, the amount thereof is relatively large. For this reason, the tube 3 flows out of the nozzle port 5 of the nozzle tube 3 illegally, resulting in inconveniences such as occurrence of dirt or occurrence of slipping. There was a problem.

  That is, the residual liquid e of the content liquid in the nozzle cylinder 3 is located in a state where the inside of the nozzle cylinder 3 is substantially filled. However, in this state, the container with the pump is subjected to an impact caused by vibrations or other articles. When an impact due to contact is applied, or when the atmosphere expands due to an increase in the ambient temperature, the nozzle 5 drops out in a drop-down manner.

  In addition, as a pump for preventing this inconvenience, there is a pump having a function of preventing dripping when a small amount of outside air is sucked when the nozzle head 1 is lifted and returned, but the outside air sucked into the nozzle cylinder 3 is more than the remaining liquid e. Since it is located on the upstream side, the residual liquid e on the downstream side is pushed out due to the thermal expansion due to the increase in the ambient temperature of the outside air and the like, and drops out like a drop (see FIG. 5).

  Accordingly, the present invention was devised to solve the above-described problems in the prior art, and suppresses the fluidity of the remaining liquid in the nozzle cylinder within a range that does not hinder the pumping operation by the pump operation. Therefore, it is an object of the present invention to prevent the residual liquid of the content liquid in the nozzle cylinder from drooping out from the nozzle opening.

The nozzle head of the pump of the present invention is provided with a nozzle cylinder extending laterally outward on the side of the head main body with the upper surface as a pressing surface by hand, and at least at the tip opening of this nozzle cylinder. An insert is assembled and fixed near a nozzle opening.

  The insert does not interfere with the operation of pumping out the content liquid in the nozzle cylinder due to the pump operation, and from the residual liquid remaining in the nozzle cylinder through the residual liquid nozzle port. Adhesive strength to such an extent that does not cause dripping is generated.

  Since the insert does not hinder the content liquid dispensing operation, the content liquid is smoothly dispensed by the pump as usual.

  Since the remaining liquid of the content liquid remaining in the nozzle cylinder after the dispensing operation of the content liquid is in a state where its fluidity is suppressed by adhesion to the insert (including the nozzle passage surface), the gravity liquid Even if there is an action and an impact force due to some external force due to handling or contact with other articles, it does not flow away from the insert, and maintains the adhesion state with the insert, No dripping from the nozzle mouth.

  When the nozzle head is lifted and returned, the outside air sucked into the nozzle cylinder by the liquid dripping prevention function (back suction function) that sucks a small amount of outside air pushes away the remaining liquid adhering to the insert, Even if this outside air expands when it penetrates into the back of the nozzle cylinder, the expanded outside air pushes away the residual liquid adhering to the insert as in the case of the intrusion, and the residual liquid is located. Since it passes through the part, it does not happen that the residual liquid is pushed out from the nozzle port.

  The degree of the fluidity suppressing effect on the residual liquid in the nozzle cylinder by this insert is mainly determined by the gap formed between the insert and the nozzle passage surface and the viscosity of the content liquid. The size and structure of the insert will be designed according to the inner diameter of the nozzle cylinder and the viscosity of the content liquid.

The insert body is integrally provided at the base end of the main body portion having a projecting piece that abuts against the inner peripheral surface of the nozzle cylinder, and is engaged with the nozzle passage opening edge in the head main body, and is inserted into the nozzle cylinder of the insert body. and the locking portion having a locking protrusion for preventing the escape from, are constituted from.

The insert includes a body portion having a protrusion which abuts the nozzle cylinder inner peripheral surface, and the locking portion having a locking protrusion which engages with the nozzle passage opening edge of the head main body, since the configuration from the body portion By having the projecting piece, the contact area with the remaining liquid is increased, and a large adhesion force is generated between the remaining liquid and the projecting piece abuts against the inner peripheral surface of the nozzle cylinder. The posture in the nozzle cylinder is stable and constant, and the locking portion is locked to the nozzle passage opening edge in the head body by the locking protrusion, so it is assembled in the nozzle cylinder. This prevents the inserted body from coming out of the nozzle opening.

  Another means of the present invention is that the main body portion of the insert body is constituted by an elongated corrugated plate in which each wave head functions as a projecting piece, and a reinforcing piece is integrated into each trough portion of the elongated corrugated plate in an integrated manner. It is in having established.

  In the case where the main body portion of the insert body is constituted by a slender corrugated plate and a reinforcing piece is provided in each trough portion of the slender corrugated plate, each wave head of the slender corrugated plate functions as a projecting piece. The structure of the part is simplified, and the reinforcing piece is integrally provided in each trough part of the elongated corrugated plate so as to be integrated, so that the self-shape holding ability of the main body part is sufficiently enhanced.

  Another means of the present invention resides in that the main body portion of the insertion body is configured by projecting a projecting piece on each wave head of the elongated corrugated plate.

  In the case where the main body of the insert body is constructed by projecting a protruding piece on each wave head of the elongated corrugated plate, the structure has only a protruding piece projecting on each wave head of the elongated corrugated plate. Therefore, the structure of the main body can be simplified, and each protruding piece can be abutted against the inner peripheral surface of the nozzle cylinder using the elasticity of the elongated corrugated plate.

  Another means of the present invention resides in that the main body portion of the insertion body is configured by projecting a large number of projecting pieces on the peripheral surface of the elongated rod body.

  In the case where the main body portion of the insertion body is configured by projecting a large number of projecting pieces on the peripheral surface of the elongated rod body, it becomes a passage for the content liquid between the narrow rod body and the nozzle cylinder, A substantially uniform gap can be formed, and the protruding pieces are only provided on the peripheral surface of the thin rod body, so that a large number of protruding pieces can be formed.

  According to another aspect of the present invention, the main body portion of the insert is configured by connecting a plurality of plate pieces formed in a 180 ° twisted posture in series in a mutual posture in which the main body is rotated 90 °. The side end of each plate piece is a projecting piece.

  In the case where the body portion of the insert body is composed of a plurality of plate pieces twisted by 180 °, and the side end portions of the plate pieces are projecting pieces, each plate piece is relative to the entire area inside the nozzle cylinder. Therefore, the remaining liquid is surely attached to the main body part, and each plate piece is positioned in a form crossing the center in the nozzle cylinder. A relatively large gap is formed between the inner peripheral surface of the nozzle cylinder, and the gap is not blocked by the residual liquid adhering to the main body, and an air pocket is not formed in the nozzle cylinder.

  According to another aspect of the present invention, there is provided a locking projection for locking the locking portion of the insert to the nozzle passage opening edge in the head body, and provided in the vicinity of the locking projection. That is, it is composed of a pressing bullet piece that holds the locking projection piece by elastic contact with the road surface.

  In the case where the locking portion of the insertion body is constituted by a locking piece and a pressing bullet piece, the locking piece is locked to the nozzle passage opening edge in the head body by the elasticity of the pressing bullet piece. Therefore, the action of preventing the insertion member from coming out of the nozzle cylinder by the locking portion is reliably maintained.

  Another means of the present invention resides in that a knob that can be easily removed by hand is integrally provided at the tip of the main body of the insert.

  In the structure in which the knob is integrally provided on the insert, the insertion and assembling operation of the insert into the nozzle cylinder can be performed by picking the knob with the fingertip.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the nozzle head of the present invention, it is possible to reliably prevent dripping of the remaining liquid remaining in the nozzle cylinder while maintaining the smooth dispensing operation of the liquid content, thereby preventing the pump from It is possible to obtain a preferable use state of the assembled container without sanitary and unnecessary slipping.

  The prevention of dripping of the remaining liquid is maintained as long as the remaining liquid adheres to the inserted body, so that not only the action of external force but also the expansion action of the outside air that has entered the nozzle cylinder is sure. In this way, a powerful residual liquid dripping prevention operation can be obtained.

The insert includes a body portion having a protrusion which abuts the nozzle cylinder inner peripheral surface, and the locking portion having a locking protrusion which engages with the nozzle passage opening edge, since it is configured from, deposited in a large area as the residual liquid Can be positioned in a fixed posture in the nozzle cylinder, thereby exerting a strong and stable adhesion holding action against the remaining liquid, and the action of the locking part allows the insertion body Can be prevented from coming out of the nozzle opening, and the assembly of the insert to the nozzle cylinder can be strongly maintained with a simple configuration.

  In addition, if the main body of the insert is composed of a slender corrugated plate and a reinforcing piece is provided in each trough of the slender corrugated plate, the structure of the main body is simplified and the self-shape of the main body Since the holding ability can be sufficiently increased, an insert that is easy to handle can be easily manufactured.

  In the case where the main body portion of the insertion body is configured by projecting a protruding piece on each wave head of the elongated corrugated plate, the structure of the main body portion can be simplified, and Since it is possible to obtain a reliable contact with the inner peripheral surface of the nozzle cylinder, it is possible to easily manufacture an insert that stably inserts into the nozzle cylinder.

  In the case where the main body portion of the insertion body is configured by projecting a large number of projecting pieces on the peripheral surface of the elongated rod body, a substantially uniform gap can be formed between the nozzle body and the insert body. Therefore, a substantially uniform adhesion force can be generated along the circumferential direction, and this allows a uniform adhesion force to be exerted on the entire remaining liquid. In addition, since a large number of projecting pieces can be formed, it is easy to set the adhesive force with respect to the remaining liquid.

  If the main body of the insert is composed of a plurality of plate pieces that are twisted by 180 ° and the side ends of the plate pieces are projecting pieces, adhesion of the residual liquid to the main body portion is reliably achieved. In addition, since no air pool is formed in the nozzle cylinder, the residual liquid dripping prevention operation by the insert can be obtained with certainty.

  In the case where the locking part of the insert is composed of a locking piece and a holding bullet, the locking piece secures the locking of the locking piece to the head body by the holding bullet, The prevention of slipping out of the nozzle tube is reliably prevented, so that the assembly of the insert with respect to the nozzle cylinder can be stably maintained.

  In the configuration in which the knob is provided integrally with the insert, the insertion of the insert into the nozzle cylinder can be performed by picking the knob with the fingertip. In addition, since the insertion of the entire insert into the nozzle tube can be easily and easily achieved, a preferable assembly state of the insert with respect to the nozzle tube can be easily obtained.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 1 to 4, the same reference numerals as those shown in FIG. 5 describing the prior art indicate the same parts.

The nozzle head 1 in the illustrated embodiment is integrally provided with a nozzle cylinder 3 extending laterally outward while slightly descending a curve on the side surface of a head body 2 whose upper surface is a pressing surface by hand. 2, a head neck cylinder 6 having a nozzle passage 4 of the nozzle cylinder 3 opened at an upper end portion and a valve pressing piece 7 positioned at the center of the head neck cylinder 6 are provided in a suspended manner.

  This nozzle head 1 is a part of the main part of the pump, and is fitted to the upper end portion of a stem 9 with a ball valve 10 in a tightly and immovably fitted manner with its head neck tube 6. Due to the downward displacement of the stem 9 accompanying the depression, the ball valve 10 is opened to suck up the content liquid, and the sucked up content liquid is poured out through the nozzle cylinder 3 to a target location.

  The stem 9 having a cylindrical shape forms a stepped portion for setting a limit position with a fitting assembly on the outer peripheral surface of the upper end portion that is tightly inserted into the head neck tube 6, and is inclined and contracted downward on the inner peripheral surface of the upper end portion. A ball seat 10 is formed by surrounding a diameter inner flange piece and the ball valve 10 is assembled, and a plurality of vertical stripes are provided on the inner circumferential surface on the upper side of the inner collar piece forming the valve seat surface. Thus, a passage that is not closed by the ball valve 10 is secured.

  In a state in which the nozzle head 1 is assembled to the stem 9, the lower end edge of the valve pressing piece 7, whose hanging posture is reinforced by a rib piece, is located at the upper end opening of the stem 9 that is tightly fitted into the head neck tube 6. The ball holding piece 7 prevents the ball valve 10 from coming out of the stem 9.

A combination of a guide cylinder 8 suspended from the head body 2 in a form surrounding the head neck cylinder 6 and a support cylinder 11 provided on the main portion side of the pump is slidable vertically. By engaging the nozzle head 1, the up-and-down displacement posture of the nozzle head 1 can be stably and constantly held without being inclined.

  Further, the combination of the guide tube 8 and the support tube 11 is provided with a detent function portion using a key structure, but is not limited thereto, and may be provided as necessary.

  FIG. 1 shows an embodiment in which a first configuration example of an insert body 12 is assembled. The insert body 12 is provided integrally with an elongated corrugated plate-like body portion 13 and a base end of the body portion 13. It is comprised from the latching | locking part 16 made and the knob | pick piece 19 integrally provided at the front-end | tip of the main-body part 13. As shown in FIG.

  The main body portion 13 is constituted by an elongated corrugated plate body, and the elongated corrugated plate body abuts both side edges of each wave head against the inner peripheral surface of the nozzle cylinder 3, that is, the passage surface of the nozzle passage 4. Each of the troughs is provided with reinforcing pieces 15 (see FIG. 1 (b)) for maintaining the corrugated shape in a hand-off manner.

  The locking portion 16 connected to the base end of the main body 13 includes a locking protrusion 17 provided at an end protruding from the nozzle passage 4 into the head neck tube 6, and the locking protrusion 17. The holding protrusion 18 is provided in the vicinity and elastically contacts the passage surface of the nozzle passage 4, and the locking protrusion 17 is locked to the opening edge of the nozzle passage 4, and the nozzle of the insertion body 12. The stopper bullet 18 is prevented from coming out from the mouth 5, and its elasticity is applied in the direction in which the locking protrusion 17 is locked to the opening edge of the nozzle passage 4.

  The knob 19 integrally provided at the tip of the main body 13 is for facilitating the insertion and assembly of the insert 12 into the nozzle cylinder 3, and has a plate shape that can be easily picked with a fingertip. The piece 19 is picked with a fingertip, and the body portion 13 and the locking portion 16 of the insertion body 12 are inserted and assembled into the nozzle cylinder 3 from the nozzle port 5, and the locking portion 16 is locked to the opening edge of the nozzle passage 4. Is achieved, the main body 13 is peeled off and separated.

  FIG. 2 shows an embodiment in which a second configuration example of the insert body 12 is assembled. The insert body 12 is provided integrally with the elongated corrugated plate-like main body portion 13 and the base end of the main body portion 13. It is comprised from the latching | locking part 16 made.

  The main body 13 is configured by projecting projecting pieces 14 (see FIG. 2B) that abut against the inner peripheral surface of the nozzle cylinder 3 at each wave head of the elongated corrugated plate body. In the state where the insert 12 is inserted and assembled in the nozzle cylinder 3, the protruding end of each protruding piece 14 abuts against the inner peripheral surface of the nozzle cylinder 3 by elastic deformation in the direction of decreasing the peak value. State.

  Since the locking portion 16 connected to the base end of the main body portion 13 has the same structure as the first structural example shown in FIG. 1, detailed description thereof is omitted.

FIG. 3 shows an embodiment in which a third configuration example of the insert body 12 is assembled. The insert body 12 is integrally provided at the elongated rod-like main body portion 13 and the base end of the main body portion 13. The engaging part 16 is comprised.

  The main body 13 is configured by projecting a large number of projecting pieces 14 (see FIG. 3B) on the peripheral surface of the elongated rod body, and each projecting piece 14 has an insert 12 in the nozzle tube 3. In the inserted and assembled state, the protruding end is brought into contact with the inner peripheral surface of the nozzle cylinder 3 by its own elastic deformation.

  Since the locking portion 16 connected to the base end of the main body portion 13 has the same structure as the first structural example shown in FIG. 1, detailed description thereof is omitted.

FIG. 4 shows an embodiment in which a fourth configuration example of the insert body 12 is assembled. The insert body 12 is provided integrally with a twisted plate-like body portion 13 and a base end of the body portion 13. It is comprised from the latching | locking part 16 made.

  The main body 13 is coupled in series (see FIG. 4 (b)) with a plurality of plate pieces molded in a 180 ° twisted posture in a mutually rotated posture (see FIG. 4B), and the side of each twisted plate piece. Each twist plate piece is positioned in the nozzle cylinder 3 in a posture similar to a screw.

  Since the locking portion 16 connected to the base end of the main body portion 13 has the same structure as the first structural example shown in FIG. 1, detailed description thereof is omitted.

  The pump used is not limited to the one with a ball valve, and any type of pump such as a spring type synthetic resin valve can be used.

FIG. 1 shows an example of the first embodiment, (a) is an overall longitudinal sectional view partially broken, and (b) is an external perspective view of a main part of a main body of an insert. Fig. 2 shows an example of the second embodiment, (a) is an overall longitudinal sectional view partially broken, and (b) is an external perspective view of a main part of a main body portion of an insert. FIG. 3 shows an example of the third embodiment, (a) is an overall longitudinal sectional view partially broken, and (b) is an external perspective view of a main part of a main body part of an insert. FIG. 4 shows a fourth embodiment, (a) is an overall longitudinal sectional view partially broken, and (b) is an external perspective view of a main part of a main body part of an insert. FIG. 7 is an overall longitudinal sectional view partially broken, showing a conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Nozzle head 2; Head main body 3; Nozzle pipe | tube 4; Nozzle channel | path 5; Nozzle port 6; Head neck pipe | tube 7; Valve press piece 8; Guide pipe | tube 9; Projection piece 15; Reinforcement piece 16; Engagement portion 17; Engagement projection piece 18; Pressing bullet piece 19; Pick piece e;

Claims (7)

A nozzle head in which a nozzle cylinder extending laterally outward is provided on the side of the head body with the upper surface as a pressing surface by hand, and is inserted into the nozzle cylinder at least near the nozzle opening, which is the tip opening. The body is assembled and fixed, and the insert does not hinder the dispensing of the content liquid, and the residual liquid remaining in the nozzle cylinder is not removed from the nozzle port of the residual liquid. The head main body is formed integrally with a main body portion having a projecting piece that abuts against the inner peripheral surface of the nozzle cylinder, and a base end of the main body portion. A pump nozzle head comprising: a locking portion having a locking protrusion that locks to an opening edge of the nozzle passage and prevents the insertion body from coming out of the nozzle cylinder . 2. The nozzle of the pump according to claim 1 , wherein the main body portion of the insertion body is constituted by an elongated corrugated plate in which each wave head functions as a projecting piece, and a reinforcing piece is integrally provided in each trough portion of the elongated corrugated plate. head. The main body portion of the insert, according to claim 1 pump nozzle head according constituted by projecting the protrusion into each wave head fine long wave plate. The main body portion of the insert, the circumferential surface of the elongated rod, a number of claim 1 pump nozzle head according protrusion configured by projecting a. The main body of the insert body is formed by connecting a plurality of plate pieces molded in a 180 ° twisted posture in series with each other being rotated 90 ° and projecting the side end of each plate piece. pieces and claims 1 pump nozzle head according. A locking protrusion for locking the locking portion of the insert to the nozzle passage opening edge in the head main body and the engagement portion are provided in the vicinity of the locking protrusion and elastically contacted with the nozzle passage surface. The nozzle head of the pump according to any one of claims 1 to 5, wherein the nozzle head is constituted by a pressing bullet that holds the locking of the stop protrusion . The pump nozzle head according to any one of claims 1 to 6, wherein a pick piece that can be easily removed by hand is integrally provided at the tip of the main body of the insert .

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