JP2013220828A - Nozzle head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle head for a manual depression extraction pump, which is improved in safety by preventing a liquid content which gushes out of a discharge port at the tip of the nozzle head when the nozzle head is depressed from scattering.SOLUTION: A discharge cover (7) is assembled to a tip cylinder portion (8) as the tip of a nozzle cylinder (5) by rotating the discharge cover around a hinge (6). Thus, there are formed, between the tip cylinder portion (8) and the discharge cover (7): a change guide path (14) which guides a liquid content to a discharge port (11) by downward changing the direction of an outflow path (10); and a flow straightening plate (16) which straightens the flow of the liquid content passing through the change guide path (14).

Description

  The present invention relates to a nozzle head used for a manual push-out dispensing pump that dispenses a liquid having a low viscosity and difficult to solidify, such as a mouth rinse (liquid oral composition) filled in a container or an alcohol for disinfection. .

  As containers for cosmetics, hair styling, shampoos, rinses, etc., many are equipped with pumps regardless of handy type or stationary type, and by pushing down the nozzle head provided outside the container, The content liquid in the container can be poured out hygienically and efficiently from the tip of the nozzle. As prior art relating to such a nozzle head, for example, the following Patent Document 1 exists.

  The nozzle head described in Patent Document 1 includes a discharge nozzle composed of a discharge port portion that opens downward and a nozzle base, and a pressing head portion. The discharge port portion has a hinge at the upper end of the tip surface of the nozzle base. In the vicinity of the hinge, there is provided a locking portion that engages with the upper surface of the discharge port portion and the upper surface of the nozzle base, and the discharge port portion is rotated around the hinge, By engaging the locking portion, the inner solution in the container is discharged from the discharge port portion.

JP 2005-296925 A

  In the nozzle head described in Patent Document 1, the discharge port portion is rotatably mounted, and the lock portion that engages with the upper surface of the discharge port portion and the upper surface of the nozzle base can be unlocked. It is configured. Then, by rotating the discharge port portion and setting the engagement portion in the locked state, the discharge direction of the discharge port portion can be set downward, and after the discharge is finished, the lock portion is locked. , And the discharge port is rotated in the opposite direction to expose the outlet, thereby removing the content liquid remaining in the discharge port and the flow path of the nozzle substrate, and cleaning the discharge nozzle. Can be done. For this reason, it has the outstanding effect that it can be discharged using this nozzle head, even if it is a solid liquid which is easy to solidify, such as a body soap and a hand soap.

In such a nozzle head, when the target of the internal solution is a liquid having low viscosity and difficult to solidify, such as a mouth rinse (liquid oral composition) or an alcohol for disinfection, when the nozzle head is pushed down with a large force, The inner solution is ejected vigorously from the ejection port.
However, when the inner solution passes through the flow path of the nozzle base, a difference in density occurs between the inner solution that passes through the central portion of the flow passage and the inner solution that passes through the side edge portion. The discharge port may be reached in a swirl flow state or in a state where the density of the inner solution is biased due to a sudden downward change in the discharge direction. When the inner solution in such a state is discharged from the discharge port portion, it scatters to the surroundings and may enter into the eyes of the operator, for example, and cause an unexpected accident.

  In order to solve the above-described problems in the prior art, the present invention improves safety by preventing scattering of the internal solution that is ejected vigorously from the ejection port at the tip of the nozzle head when the nozzle head is pushed down. It is an object of the present invention to create a nozzle head for a manual push-pump pump.

Among the means for solving the above problems, the main means of the present invention is as follows.
A pressing head part that is attached to the tip of a stem connected to the pump and has a suction passage that guides the liquid content sucked up by the pump upward, and is formed so as to protrude from the side surface of the pressing head part and is substantially horizontal to the suction path. A nozzle cylinder having an outflow path that communicates the content liquid in the horizontal direction and a discharge port that discharges the internal solution to the outside, a discharge cover that communicates with the outflow path and guides the internal solution to the outside, and a nozzle for the discharge cover In a nozzle head having a hinge that is pivotally connected to a cylinder,
By rotating the discharge cover around the hinge and assembling it to the front tube part, which is the tip of the nozzle tube, the direction of the outflow path is changed downward between the front tube part and the discharge cover, leading to the discharge port A guide path and a rectifying plate that rectifies the internal solution passing through the changed guide path are formed.

  In the nozzle head provided with the above means, the internal solution passes through a substantially horizontal outflow path provided in the nozzle cylinder, and is then discharged from the discharge port to the outside through a change guide path that changes the outflow direction downward by about 90 degrees. Although it is a structure, the swirl | flow of an internal solution or cancellation | release is achieved by the rectification | straightening effect | action of this rectification | straightening board by arrange | positioning a rectification | straightening board in both a change guide path and discharge outlet, or at least an ejection outlet.

  According to another aspect of the present invention, in the nozzle head according to claim 1, the first rectifying piece is provided in one of the front tube portions and the second rectifying piece is provided in the other discharge cover. The first rectifying piece and the second rectifying piece are combined to form a rectifying plate.

  In the above means, by installing the discharge cover at the tip of the nozzle cylinder, the current plate is installed in the change guide path formed between the tip of the nozzle cylinder and the discharge cover.

  According to another aspect of the present invention, in the nozzle head according to claim 1, the rectifying plate is constituted by a first rectifying piece arranged only at the discharge port.

  Also in the above means, when the discharge cover is assembled to the tip of the nozzle cylinder, the current plate is installed at the discharge port which is the tip of the change guide path formed between the tip of the nozzle cylinder and the discharge cover.

  According to another aspect of the present invention, in the nozzle head according to claim 2 or 3, the first rectifying pieces are arranged in a cross shape.

  With the above-described means, the swirling or unevenness of the inner solution discharged from the discharge port is eliminated, and a uniform flow is achieved.

  According to another aspect of the present invention, in the nozzle head according to claim 2 or 3, the first rectifying pieces are arranged radially.

  The above means eliminates further swirling or unevenness of the internal solution discharged from the discharge port, and achieves discharge of the internal solution with better uniformity.

According to another aspect of the present invention, in the nozzle head according to any one of claims 1 to 5, a first engagement formed on one of both outer side surfaces of the front tube portion and both inner side surfaces of the discharge cover. It consists of a stop projection and a first locking recess formed on the other, and has a first locking portion in which the first locking projection and the first locking recess are undercut coupled.

  In the above means, the first locking projection and the first locking recess constituting the first locking portion are undercut coupled so that the first locking portion cannot be separated and covers the front tube portion. The assembled discharge cover is rotated in the opposite direction and the front tube portion is not exposed again.

  According to another aspect of the present invention, there is provided the nozzle head according to any one of claims 1 to 6, wherein the nozzle head is provided on one of a tip portion protruding from a lower jaw portion in front of the front tube portion and a lower portion of the front surface of the discharge cover. A second locking projection formed on the other side and a second locking recess formed on the other, the second locking projection and the second locking recess locking each other. It is said to have.

  In the above means, the second locking convex portion and the second locking concave portion constituting the second locking portion engage with each other to achieve positioning of the discharge cover with respect to the tip of the nozzle tube, and to discharge the tip tube portion and the discharge tube. A guide path and a rectifying plate for guiding the internal solution from the outflow path to the discharge port and the rectifying plate are reliably and highly accurately formed at a portion facing the cover.

  According to another aspect of the present invention, in the nozzle head according to any one of claims 1 to 7, the second locking recess is formed by a through-hole penetrating the front surface of the discharge cover. The leak prevention piece is formed on the upper surface of the hole at the tip of the lower jaw and opposite the upper end portion of the second locking projection.

  In the above means, the leakage preventing piece is face-facing the tip of the lower jaw and the upper portion of the second locking projection, thereby preventing leakage of the internal solution passing through the guide path. .

  According to another aspect of the present invention, in the nozzle head according to any one of claims 1 to 8, in the state where the discharge cover is assembled to the tip of the nozzle cylinder, the top surface of the inner wall of the discharge cover and the outflow of the nozzle cylinder It is said that a step is formed between the top of the road and the top of the inner wall extending upward.

  In the above means, when the inner wall top surface of the discharge cover corresponding to the inlet of the downstream guide passage is wider than the opening end of the outlet passage corresponding to the upstream outlet, To achieve a smooth flow of the content liquid.

  Another means of the present invention is that in the nozzle head according to any one of claims 1 to 9, the content liquid is a liquid oral composition.

Since the present invention is the above-described means, the following effects can be obtained.
In the main configuration of the present invention, even if the inner solution is swirled or biased, the inner solution is discharged straight downward by the rectifying action of the rectifying plate. It is possible to prevent an accident that the scattered internal solution enters the eyes of the operator.

  Further, the first rectifying piece is provided in one of the front tube portions, and the second rectifying piece is provided in the other discharge cover, which forms the change guide path according to claim 2, and the first rectifying piece and the first rectifying piece In the configuration in which the rectifying plate is formed by combining the two rectifying pieces, the outflow path with respect to the nozzle cylinder can be easily formed. When the above-mentioned means are not adopted, that is, in the injection molding of the nozzle head in which the change guide path bent at about 90 degrees is integrally formed at the tip of the nozzle cylinder, it is difficult to forcibly extract the outflow path forming pin (forced extraction work). Therefore, it is impossible to form the flow guide plate in the change guide path and the outflow path to the nozzle cylinder at the same time, but by adopting the above means, the discharge cover is opened at the tip. Since it is connected to the nozzle cylinder via a hinge, it is not necessary to forcibly remove it and it can be formed by a normal slide extraction operation, so it is easy to form an outflow path to the nozzle cylinder. And it becomes possible to carry out reliably.

  Further, in the configuration constituted by the first rectifying piece in which the rectifying plate is disposed only at the discharge port according to claim 3, all of the content liquid discharged through the discharge port to the outside of the nozzle head can be rectified, It is possible to prevent scattering of the internal solution at the discharge port.

  Further, in the configuration in which the first rectifying pieces are arranged in a cross shape according to claim 4, it is possible to eliminate swirling flow or density unevenness and to obtain a highly uniform internal solution, and the internal flow rate at the discharge port is reduced. The effect of preventing the solution from scattering can be improved.

  Further, in the configuration in which the first rectifying pieces are radially arranged according to claim 5, it is possible to eliminate the further swirling flow or the uneven density and to obtain a highly uniform internal solution. In addition, scattering of the internal solution at the discharge port can be prevented.

Further, it comprises a first locking convex portion formed on one of both outer side surfaces of the front tube portion and both inner side surfaces of the discharge cover, and a first locking concave portion formed on the other. 1 locking projection and a configuration having a first engagement portion for coupling the first engagement recess Togaa Ndakatto, impossible once the separation of the first locking portion and the first engagement recess which is undercut bond Therefore, the discharge cover that covers the front tube portion is prevented from rotating in the reverse direction and the front tube portion is not exposed again, so that the inner solution can be guided from the outflow path to the current plate through the change guide path. It is possible to reliably prevent scattering of the inner solution.

  In addition, the second engaging protrusion formed on one of the tip portion protruding from the lower jaw portion in front of the front tube portion and the lower portion of the front surface of the discharge cover, and the second engagement formed on the other, according to claim 7. A second locking projection that constitutes the second locking portion in a configuration comprising a locking recess and the second locking projection and the second locking portion in which the second locking recess locks each other. And the second locking recess engage with each other so that the discharge cover can be positioned with respect to the tip of the nozzle cylinder, so that the formation of the guide path for guiding the internal solution from the outflow path to the discharge port and the formation of the current plate are ensured. Can be done.

  Further, the second locking concave portion according to claim 8 is formed by a through hole penetrating the front surface of the discharge cover, and the upper surface of the through hole is at the lower jaw tip and more than the second locking convex portion. In the configuration in which the leak prevention piece is formed facing the upper end portion, it is possible to prevent liquid leakage from the through hole of the internal solution passing through the guide path.

  Further, in the state where the discharge cover is assembled to the tip of the nozzle cylinder according to claim 9, a step is formed between the inner wall top surface of the discharge cover and the outflow path top surface of the nozzle cylinder so that the inner wall top surface side extends upward. With this configuration, the flow of the content liquid flowing out from the outflow path to the guide path can be made smooth, and leakage of the content liquid can be prevented.

It is a side view which shows the state before attaching a discharge cover as 1st Example of the nozzle head of this invention. It is a longitudinal cross-sectional view of the nozzle head shown in FIG. It is a side view similar to FIG. 1 which shows the state after discharge cover assembly | attachment. It is a longitudinal cross-sectional view similar to FIG. 2 which shows the state after discharge cover assembly | attachment. FIG. 2 is a front view of the nozzle head of FIG. 1 and shows a state before the discharge cover is assembled. FIG. 4 is a front view of the nozzle head of FIG. 3 and shows a state after the discharge cover is assembled. It is a bottom view which expands and shows the front-end | tip of a nozzle cylinder, and is a figure which shows the state before discharge cover assembly | attachment. It is a bottom view which expands and shows the front-end | tip of a nozzle cylinder, and is a figure which shows the state after discharge cover assembly | attachment. As a second embodiment of the nozzle head of the present invention, it is a longitudinal sectional view of the tip of the nozzle head showing a state after the discharge cover is assembled. It is a bottom view which expands and shows the front-end | tip of the nozzle cylinder shown in FIG. As a third embodiment of the nozzle head of the present invention, it is a longitudinal sectional view of the tip of a nozzle tube showing a state after the discharge cover is assembled. It is a bottom view which expands and shows the front-end | tip of the nozzle cylinder shown in FIG. It is a bottom view which expands and shows the front-end | tip of a nozzle cylinder as another example of a baffle plate. It is a bottom view which expands and shows the front-end | tip of a nozzle cylinder as another example of a baffle plate. FIG. 6 is an enlarged longitudinal sectional view showing a tip of a nozzle head as a modification of the first embodiment. FIG. 6 is an enlarged longitudinal sectional view showing the tip of a nozzle head as another modification of the first embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view showing a state before the discharge cover is assembled as a first embodiment of the nozzle head of the present invention, FIG. 2 is a longitudinal sectional view of the nozzle head shown in FIG. 1, and FIG. FIG. 4 is a side view similar to FIG. 1 showing the state, FIG. 4 is a longitudinal sectional view similar to FIG. 2 showing the state after assembly of the discharge cover, and FIG. 5 is a front view of the nozzle head of FIG. FIG. 6 is a front view of the nozzle head of FIG. 3 and shows a state after assembling the discharge cover. FIG. 7 is a bottom view showing the tip of the nozzle cylinder in an enlarged manner and before the discharge cover is assembled. FIG. 8 is an enlarged bottom view showing the tip of the nozzle cylinder and a view after the discharge cover is assembled.

  The nozzle head 1 of the present invention is made of a synthetic resin that is integrally molded by an injection molding method, and is used by being attached to the tip of a stem that extends from a pump (not shown) through a mouth tube portion to the outside of the container. Is.

  As shown in FIGS. 1 and 2, the nozzle head 1 is formed to include a pressing head portion 2, a connecting portion 3, and a nozzle portion 4. The nozzle part 4 shown in this embodiment includes a nozzle cylinder 5 extending in a substantially horizontal direction from the side surface 2A of the pressing head part 2, a tip cylinder part 8 formed at the tip of the nozzle cylinder 5, and an upper end of the nozzle cylinder 5 And a discharge cover 7 that can cover the front tube portion 8.

  The connecting portion 3 is suspended in a tubular shape on the lower surface of the pressing head portion 2, and a suction path 9 is formed in the connecting portion 3 along the vertical direction (see FIG. 2). Although not shown in the figure, the tip of a stem extending from a pump provided in the container is connected to the connecting part 3 so that the nozzle head 1 is attached to the upper part of the mouth tube part of the container. ing.

  An outflow passage 10 through which the inner solution flows is formed in the nozzle cylinder 5 along a substantially horizontal direction, and a back portion, which is one end of the outflow passage 10, extends in the center direction of the pressing head portion 2, It communicates with the suction channel 9. The other end of the outflow passage 10 reaches the end of the front tube portion 8, and an opening 10 a that is the end of the outflow passage 10 is formed on the front end face of the front tube portion 8.

  The front tube portion 8 formed at the front end of the nozzle tube 5 has a substantially trapezoidal shape in which the lower side protrudes forward from the upper side (see FIG. 1), and further protrudes forward at the lowest position. The lower jaw portion 8a is integrally formed. In the nozzle head 1 shown in FIG. 2 as the first embodiment, a discharge port 11 formed with a hole penetrating the lower jaw portion 8a in the vertical direction is formed.

  As shown in FIG. 5, the front tube portion 8 is formed with a narrower width than the nozzle tube 5, and is a boundary between the front end surface of the nozzle tube 5 and the left and right outer surfaces 8 </ b> A and 8 </ b> A of the front tube portion 8. The step is formed with a stepped portion 8b having an inverted U shape. In addition, one of the first locking projections 12a and 12a constituting the first locking portion 12 protrudes from both outer side surfaces 8A and 8A. As shown in FIGS. 1 and 7, etc., a tapered portion 12a1 that is gradually widened rearward is formed in front of the first locking convex portion 12a, and the outer surface 8A is formed on the top of the subsequent tapered portion 12a1. An undercut portion 12a2 that is vertically cut is formed. Further, a convex second locking convex portion 13a constituting the second locking portion 13 protrudes from the tip of the lower jaw portion 8a.

  As shown in FIGS. 2, 4, 5, and the like, the front pipe portion 8 has a front pipe 8 </ b> B with a half-pipe-shaped rear guide path that forms part of the outflow path 10 and the change guide path 14 that follows the outflow path 10. 14a is formed. The discharge port 11 is formed at the lower end of the rear guide path 14 a, and the lower end of the rear guide path 14 a constitutes a part of the discharge port 11.

  As shown in FIGS. 2, 4 and 5, the rear guide path 14a is suspended at the center of the curved surface of the rear guide path 14a, and the changed guide path 14 is divided into two equal parts in the width direction. A thin plate-like first rectifying piece 16a constituting one of the rectifying plates 16 is integrally formed. As shown in FIG. 2, the first rectifying piece 16 a has an upper end that reaches the opening 10 a that is the tip of the outflow passage 10, and a lower end that is disposed inside the discharge port 11. The length of the first rectifying piece 16a in the radial direction is approximately ½ (radius) of the diameter of the changed guide path 14 on the rear guide path 14a side, and the discharge port 11 side is cut longitudinally on the discharge port 11 side. It is formed with a diameter dimension. The first rectifying piece 16a divides the opening 10a and the discharge port 11 into left and right halves in the left and right width direction.

  As shown in FIGS. 1 and 2, etc., the discharge cover 7 has a pair of left and right side surfaces 7A and 7A and a curved front surface 7B connecting the both side surfaces 7A, and the rear portion 7C and the bottom portion 7D are open. It has a hood shape. Then, the upper part of the front surface 7B and the upper end part of the nozzle cylinder 5 are rotatably connected via a hinge 6.

  As shown in FIG. 2, first locking recesses 12b and 12b constituting the first locking portion 12 are formed on inner side surfaces 7A1 and 7A1, which are inner walls of the left and right side surfaces 7A, respectively, and are formed on the inner wall of the front surface 7B. Is formed with a half-pipe-shaped front guide portion 14 b that constitutes a part of the change guide path 14. And the concave curved surface 7a is formed in the upper part of the front guide part 14b, and the position close | similar to the terminal of the outflow path 10 (refer FIG. 4).

  A thin plate-like second rectifying piece 16b that constitutes the other of the rectifying plate 16 that bisects the change guide path 14 in the width direction is equally provided vertically at the center of the curved surface of the front guide portion 14b. In addition, the length dimension of the radial direction of the 2nd rectification | straightening piece 16b is a dimension corresponded to 1/2 of the diameter of the change guide path 14. FIG.

  In FIG. 4, a second locking recess 13 b constituting the second locking portion 13 is formed at a position that is the lower end of the front surface 7 </ b> B of the discharge cover 7. The second locking recess 13b may be formed in a concave groove shape on the inner wall of the front surface 7B, or may be formed by a hole penetrating the front surface 7B as shown in FIG. That is, the 2nd latching recessed part 13b in this invention is a concept containing not only a recessed groove but a through-hole.

  As shown in FIGS. 1 to 6, when the discharge cover 7 is rotated about the hinge 6 and assembled to the tip of the nozzle cylinder 5, the front tube portion 8 is formed between the left and right side surfaces 7 </ b> A and 7 </ b> A of the discharge cover 7. It is inserted and the whole front tube part 8 can be covered. At this time, the second locking projection 13a formed at the tip of the lower jaw portion 8a on the front tube portion 8 side and the second locking recess 13b formed on the lower end of the front surface 7B on the discharge cover 7 side are locked. Fit. As a result, the discharge cover 7 is positioned with respect to the front tube portion 8, particularly in the height direction.

  At the same time, as shown in FIGS. 7 and 8, the first locking projections 12a and 12a formed on the left and right outer surfaces 8A and 8A on the front tube portion 8 side are both inner surfaces 7A1 on the discharge cover 7 side. , 7A1 and relatively over the tapered portion 12a1 of the first locking recess 12b, 12b, and undercut coupled to the undercut portion 12a2 inseparably. Note that the rear portion 7 </ b> C of the discharge cover 7 contacts the stepped portion 8 b having an inverted U shape, which is the tip of the nozzle tube 5, so that the entire front tube portion 8 is covered.

  Further, as shown in FIG. 4, the rear guide path 14 a on the front tube portion 8 side and the front guide path 14 b on the discharge cover 7 side are assembled to form a tubular (pipe-shaped) change guide path 14. Thereby, the end of the outflow passage 10 on the nozzle tube 5 side communicates with the discharge port 11 formed in the lower jaw portion 8a of the front tube portion 8, and the suction channel 9, the outflow channel 10, the change guide channel 14, and the discharge port 11 are communicated. A series of flow paths following is completed.

  At the same time, the rectifying plate 16 is formed by combining the opposing sides of the first rectifying piece 16 a and the second rectifying piece 16 b in contact with each other in the change guide path 14. This baffle plate 16 divides the change guide path 14 and the discharge port 11 into two equal parts in the width direction.

  In forming the nozzle head 1, as shown in FIGS. 1 and 2, the discharge cover 7 is shaped to be rotated approximately 90 degrees upward with respect to the nozzle cylinder 5 via the hinge 6. The molding is integrally performed by an injection molding method using a molding die and a slide core (not shown) including an outflow path forming pin for forming the outflow path 10 in the nozzle cylinder 5.

  When the pressing head unit 2 is pushed down, the internal solution sucked up from a container (not shown) through the extraction pump flows out in the order of the suction path 9 → the outflow path 10 → the change guide path 14 and is discharged from the discharge port 11. In this discharge process, the concave curved surface 7a formed on the inner wall of the discharge cover 7 forms an appropriate direction, i.e., the discharge port 11, in the direction of the internal solution that has passed through the substantially horizontal outflow passage 10. Directed downward.

  Then, the inner solution is rectified by the rectifying action by the rectifying plate 16 disposed in the change guide path 14. In other words, the inner solution is discharged from the discharge port 11 in a state where the swirling flow is eliminated or the left / right deviation is reduced and the density is substantially uniform by dividing the inside of the change guide path 14 substantially equally. Therefore, it is possible to prevent scattering at the discharge port 11 during discharge. Accordingly, it is possible to prevent an accident that the inner solution is scattered around the discharge port and enters the eyes of the operator.

  FIG. 9 is a longitudinal sectional view of the tip of the nozzle head showing a state after the discharge cover is assembled as a second embodiment of the nozzle head of the present invention, and FIG. 10 is a bottom view showing the enlarged tip of the nozzle cylinder shown in FIG. is there.

  The nozzle head shown as the second embodiment in FIGS. 9 and 10 is different from the nozzle head 1 of the first embodiment in the structure of the rectifying plate provided in the change guide path 14, and the other points are as follows. The configuration is the same as that of the nozzle head 1 of the first embodiment. In the following, the same members as those in the first embodiment will be described with the same reference numerals.

  As shown in FIGS. 9 and 10, in the nozzle head 1 shown as the second embodiment, the rectifying plate 16 is composed of only the first rectifying piece 16 a provided in the discharge port 11. The first rectifying piece 16 a is formed of a single thin plate that bisects the discharge port 11 in the width direction and is integrally formed inside the discharge port 11.

  The inner solution passes from the outflow path 10 through the change guide path 14 and is discharged to the outside from the discharge port 11. However, the inner solution is subjected to a rectifying action at the rectifying plate 16 disposed at the discharge port 11 which is the final stage of the discharge process. Thus, the inner solution in a state where the swirling flow is eliminated or in a state where there is little bias and the density is substantially uniform can be discharged.

  FIG. 11 is a longitudinal sectional view of the tip of the nozzle head showing a state after the discharge cover is assembled as a third embodiment of the nozzle head of the present invention, and FIG. 12 is a bottom view showing the enlarged tip of the nozzle cylinder shown in FIG. It is.

  The main difference of the nozzle head shown as the third embodiment in FIGS. 11 and 12 from the nozzle head 1 of the first embodiment is the structure of the lower jaw portion 8a, the structure not having the second locking portion 13, and the modification. The structure of the rectifying plate 16 provided in the guide path 14 is the same as that of the nozzle head 1 of the first embodiment. In the following, the same members as those in the first embodiment will be described with the same reference numerals.

  As shown in FIGS. 11 and 12, in the nozzle head shown as the third embodiment, a rear guide path 14a curved in a half pipe shape is formed instead of a hole penetrating the lower jaw portion 8a. The rear guide path 14a is a curved surface formed on the front surface 8B and the lower jaw portion 8a of the front tube portion 8. The rectifying plate 16 includes a first rectifying piece 16 a provided on the rear guide path 14 a side of the tip of the nozzle cylinder 5 and a second rectifying piece 16 b provided on the front guide path 14 b side of the discharge cover 7. .

  The first rectifying piece 16 a is a thin plate-like member that hangs forward on the curved surface of the rear guide path 14 a, and its length in the longitudinal direction is ½ of the diameter of the changed guide path 14. (Radius) is formed. Similarly, the second rectifying piece 16b is a thin plate-like member that hangs in the rearward direction on the curved surface of the front guide path 14b, and the length dimension in the longitudinal direction is the change guide path 14 and the discharge port 11. It has a half dimension (radius) of the diameter.

  Also in the third embodiment, when the discharge cover 7 is rotated around the hinge 6 and assembled to the tip of the nozzle cylinder 5, the rear guide path 14a on the front cylinder portion 8 side and the front guide path 14b on the discharge cover 7 side Are assembled to form a tubular (pipe-like) change guide path 14. And the lower end of the change guide path 14 provided with the lower jaw part 8a is the discharge outlet 11. FIG.

  At the same time, the opposite sides of the first rectifying piece 16a and the second rectifying piece 16b are in contact with each other and combined with each other in the change guide path 14, thereby forming the rectifying plate 16. This baffle plate 16 divides the change guide path 14 and the discharge port 11 into two equal parts in the width direction.

  Therefore, as in the first embodiment, the swirling flow is eliminated by the rectifying action by the rectifying plate 16 provided in the change guide path 14 and the discharge port 11 in the same manner as in the first embodiment, and there is little deviation and the density is substantially uniform. It can be discharged.

FIG. 15 is an enlarged longitudinal sectional view showing the tip of the nozzle head as a modification of the first embodiment.
The nozzle head 1 shown as a modification of the first embodiment in FIG. 15 is different from the nozzle head 1 of the first embodiment in the configuration of the discharge cover 7, and the other configurations are the nozzle head of the first embodiment. Same as 1.

  As shown in FIG. 15, also in this modified example, the second locking recess 13b constituting the second locking portion 13 is formed by a through hole 7b penetrating the front surface 7B, and in this through hole 7b, Similar to the first embodiment, the second locking convex portion 13a projecting from the tip of the lower jaw portion 8a is engaged and locked.

However, this modification is different in that the leak prevention piece 8a1 is integrally formed on the upper surface of the through hole 7b.
This leakage prevention piece 8a1 rotates the discharge cover 7 to cover the entire front tube portion 8, and the second lock projection 13a on the front tube portion 8 side and the second lock recess 13b on the discharge cover 7 side are connected. When they are locked, they are installed so as to face the upper portion of the second locking projection 13a at the tip of the lower jaw 8a. As a result, it is possible to prevent liquid leakage from the through-hole 7b of the internal solution passing through the change guide path 14.

FIG. 16 is an enlarged longitudinal sectional view showing the tip of the nozzle head as another modification of the first embodiment, and corresponds to a further modification of the modification of the first embodiment shown in FIG.
The nozzle head 1 shown in FIG. 16 as another modification of the first embodiment is different from the modification of the first embodiment shown in FIG. 15 in the configuration of the portion where the tip of the nozzle cylinder 5 and the discharge cover 7 are in contact with each other. The other configuration is the same as that of the nozzle head 1 of the first embodiment.

  In the other modification shown in FIG. 16, in the state where the discharge cover 7 is assembled to the tip of the nozzle cylinder 5, the upper end of the guide path 14 on the discharge cover 7 side is the opening of the outflow path 10 at the tip of the nozzle cylinder 5 facing this. The configuration is widened upward from the end. That is, the assembled state is formed by forming the height position of the inner wall top surface 7c above the curved surface 7a of the discharge cover 7 slightly above the height position of the outflow path top surface 10b of the nozzle cylinder 5. , A step 15 is formed between the inner wall top surface 7c and the outflow channel top surface 10b to widen the inner wall top surface 7c side upward.

  In the idea of forming the inner wall top surface 7c and the outflow channel top surface 10b on the same plane, the inner wall top surface 7c may be formed at a position below the outflow channel top surface 10b due to a manufacturing error or the like. In such a case, when the content liquid flows out from the outflow path 10 to the change guide path 14, it hits the corner of the inner wall top surface 7c on the discharge cover 7 side and scatters, and a part of the scattered content liquid scatters. There is a possibility of leaking to the outside through a gap formed at the connection portion between the top surface 10b and the outflow channel top surface 10b.

  However, in FIG. 16, as in another modification of the first embodiment, a step 15 is formed between the inner wall top surface 7c and the outflow channel top surface 10b with the inner wall top surface 7c side widened upward. Thus, when the content liquid flows out from the outflow path 10 to the change guide path 14, it does not hit the corner of the inner wall top surface 7c on the discharge cover 7 side and scatter. Therefore, the flow of the content liquid flowing out from the upstream outflow path 10 to the downstream change guide path 14 becomes smooth, and the leakage of the content liquid can be prevented.

  In the nozzle heads shown in the first and third embodiments, since the rectifying plate 16 is provided in both the change guide path 14 and the discharge port 11, the nozzle of the second embodiment provided only in the discharge port 11. Compared to the head, a higher rectifying effect can be expected.

By the way, as the liquid oral composition as the content liquid used for the nozzle head of the present invention, for example, at least one interface among anionic surfactant, cationic surfactant, amphoteric surfactant and nonionic surfactant is used. Those containing an activator are preferred.
In this case, the total surfactant content is preferably 0.01% by weight or more and 5.0% by weight or less. Further, the viscosity at 25 ° C. measured by the test method described below is 0 mPa · s or more and 50 mPa · s. The following are preferred.

Viscosity measurement method (oral composition)
Weigh 300 g of oral composition into a 300 ml tall beaker. Next, after standing in a constant temperature water bath at 25 ° C. for 1 hour, the viscosity after 1 minute is measured accurately using a BL type viscometer.
The viscometer used was a BL type viscometer manufactured by Tokyo Keiki Co., Ltd. 1. The rotation speed is 60 rpm.

  In addition, the example using the nonionic surfactant (Polyoxyethylene (60) hydrogenated castor oil or polyoxyethylene (40) hydrogenated castor oil) as an example of the suitable component and compounding quantity of a liquid oral cavity composition is the following. Tables 1 to 3 below show.

As mentioned above, although the structure of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.
For example, in each of the above embodiments, the inner solution is divided into left and right halves so that the inner solution is divided into two equal parts in the width direction. As shown in FIG. 14, the first rectifying piece 16a may be constituted by a rectifying plate 17 arranged in a cross shape, and further, the first rectifying piece 16a is constituted by a rectifying plate 18 arranged radially. There may be.

  Such rectifying plates 17 and 18 can divide the inner solution equally into four equal parts, and even more, so that the swirl flow is higher than that of the rectifying plate 16 divided into two equal parts in the width direction. The dissolved inner solution or the inner solution having higher uniformity and less density deviation can be obtained. Therefore, it is possible to more effectively achieve the prevention of scattering during discharge.

  The nozzle head of the present invention is used for a manual push-out dispensing pump for dispensing a liquid with a low viscosity and difficult to solidify, such as a mouth rinse (liquid oral composition) filled in a container or an alcohol for disinfection. Applications in the nozzle head field can be developed in a wider area.

DESCRIPTION OF SYMBOLS 1; Nozzle head 2; Pressing head part 3; Connecting part 4; Nozzle part 5; Nozzle cylinder 6; Hinge 7; Discharge cover 7A; Through hole 7c; Inner wall top surface 8; Lead tube portion 8A; Outer side surface 8B; Front surface 8a; Mandible portion 8a1; Leakage prevention piece 8b; Discharge port 12; 1st latching | locking part 12a; 1st latching convex part (1st latching | locking part)
12a1; taper part 12a2; undercut part 12b; first locking recess (first locking part)
13; 2nd latching | locking part 13a; 2nd latching convex part (2nd latching | locking part)
13b; second locking recess (second locking portion)
14; change guide path 14a; back guide path 14b; forward guide path 15; step 16; rectifying plate 16a; first rectifying piece 16b; second rectifying pieces 17, 18;

Claims (10)

A pressing head part (2) that is attached to the tip of a stem connected to the pump and has a suction passage (9) that guides the liquid content sucked up by the pump upward, and protrudes from a side surface of the pressing head part (2) A nozzle cylinder provided with an outlet channel (10) that is formed and communicates substantially horizontally with the suction channel (9) to guide the content liquid in a horizontal direction, and a discharge port (11) that discharges the inner solution to the outside. (5), a discharge cover (7) that communicates with the outflow passage (10) and guides the inner solution to the outside, and the discharge cover (7) is rotatably connected to the nozzle cylinder (5). A nozzle head having a hinge (6) for
By rotating the discharge cover (7) around the hinge (6) and assembling it to the front tube portion (8) which is the tip of the nozzle tube (5), the front tube portion (8) and the discharge tube Between the cover (7), the direction of the outflow path (10) is changed downward, and the inner solution passes through the changed guide path (14), which leads to the discharge port (11). And a rectifying plate (16) that rectifies the nozzle head.   A first rectifying piece (16a) is provided in one front tube portion (8) forming the change guide path (14), and a second rectifying piece (16b) is provided in the other discharge cover (7). The nozzle head according to claim 1, wherein the first rectifying piece (16a) and the second rectifying piece (16b) are combined to form a rectifying plate (16).   The nozzle head according to claim 1, wherein the rectifying plate (16) is constituted by a first rectifying piece (16a) arranged only at the discharge port (11).   The nozzle head according to claim 2 or 3, wherein the first rectifying pieces (16a) are arranged in a cross shape.   The nozzle head according to claim 2 or 3, wherein the first rectifying pieces (16a) are arranged radially. A first locking projection (12a) formed on one of both outer side surfaces (8A) of the front tube portion (8) and both inner side surfaces (7A1) of the discharge cover (7) and a first formed on the other side. it from the locking recess (12b), according to claim 1 having the first locking projections (12a) and the first engagement recess (12b) Togaa Ndakatto first locking portion for coupling (12) The nozzle head as described in any one of thru | or 5.   A second locking projection (13a) formed on one of the tip portion protruding from the lower jaw (8a) of the front tube portion (8) front surface (8B) and the lower portion of the discharge cover (7) front surface (7B) ) And a second locking recess (13b) formed on the other side, and the second locking protrusion (13a) and the second locking recess (13b) lock each other. The nozzle head according to any one of claims 1 to 6, comprising a portion (13).   The second locking recess (13b) is formed by a through hole (7b) that penetrates the front surface (7B) of the discharge cover (7), and the lower jaw (8a) tip is formed on the upper surface of the through hole (7b). The nozzle head according to any one of claims 1 to 7, wherein a leakage prevention piece (8a1) is formed opposite to the upper end portion of the second locking projection (13a).   In a state where the discharge cover (7) is assembled to the tip of the nozzle tube (5), the space between the inner wall top surface (7c) of the discharge cover (7) and the outflow path top surface (10b) of the nozzle tube (5) The nozzle head according to any one of claims 1 to 8, wherein a step (15) is formed to widen the inner wall top surface (7c) side upward.   The nozzle head according to any one of claims 1 to 9, wherein the content liquid is a liquid oral composition.

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