JP2012116501A - Nozzle head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe nozzle head for a manual push-down discharge pump by preventing a content liquid with low viscosity from being splashed when the nozzle head is pushed down by inseparably mounting a discharge cover at the tip of the nozzle head.SOLUTION: There is provided a pressing head (2) mounted at the tip of a stem connected to a pump, a nozzle cylinder (4) with a discharge channel (10) formed in the pressing head (2) for guiding a content liquid sucked up by the pump and a discharge cover (6) mounted at the tip of the nozzle cylinder (4) for setting the discharge direction of the liquid. A fitting recess (7) is formed at one side of the discharge cover (6) and the tip of the nozzle cylinder (4) and a fitting protrusion (9) is formed at the other side of the same. When the fitting recess (7) and the fitting protrusion (9) are undercut-coupled mutually inseparably, the discharge direction of the discharge opening (14) formed in the discharge cover (6) is set downward.

Description

  The present invention relates to a nozzle head for a manual push-out dispensing pump for dispensing a liquid having a low viscosity and difficult to solidify, such as a mouth rinse or a disinfecting alcohol filled in a container.

  As containers for cosmetics, hair styling, shampoos, rinses, etc., many are equipped with pumps regardless of handy type or stationary type, and by depressing 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 outlet at the tip of the nozzle base.

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 to the locked state, the discharge direction of the discharge port portion can be set downward, and after the discharge is finished, the lock state of the lock portion is changed. By releasing and rotating the discharge port part in the reverse direction to expose the outlet, the content liquid remaining in the discharge port and the nozzle substrate flow path is removed, and the discharge nozzle is cleaned. Be able to. 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.

  However, for example, when the target of the inner solution is a liquid that is difficult to solidify, such as a mouthwash or alcohol for disinfection, if the nozzle head is pushed down without the locking portion being set to the locked state, the inner solution There is a problem that the exposed outlet may scatter to the surroundings, and the scattered internal solution may enter the eyes of the operator and cause an unexpected accident.

  In order to solve the above-described problems in the prior art, the present invention provides a nozzle by attaching a discharge port portion (hereinafter referred to as “discharge cover portion”) in the vicinity of the outlet at the tip of the nozzle head in a non-removable manner. It is an object of the present invention to create a nozzle head for a manual push-down dispensing pump that is excellent in safety by preventing scattering of an internal solution having a low viscosity when the head is pushed down.

Among the means for solving the above-mentioned problems, the main configuration of the present invention is to guide the contents of the pressure head part attached to the tip of the stem connected to the pump and the liquid formed on the pressure head part and sucked up by the pump. In a nozzle head having a nozzle cylinder provided with a discharge path, and a discharge cover part that is attached to the tip of the nozzle cylinder and sets the discharge direction of the internal solution,
A locking recess is provided on one of the tip of the nozzle cylinder and the discharge cover portion, and a locking projection is provided on the other, and the locking recess and the locking projection are undercut coupled so that they cannot be separated from each other. Thus, the discharge direction of the discharge port formed in the discharge cover portion is set downward.

  In the nozzle head having the above-described configuration, the locking projection and the locking recess are undercut coupled so that the locking state is easily achieved. After locking, the locking projection and the locking recess are separated. It is possible to reliably prevent the non-locking state from being made impossible.

  A specific configuration of the present invention is a locking protrusion that is formed on both side surfaces of a tip tube portion provided at the tip of the nozzle tube, and the locking recess is on both sides of the discharge cover portion. It is said that it is the through-hole formed in this.

  In the above configuration, simply by attaching the discharge cover portion to the tip of the nozzle cylinder, the locking protrusions constituting the locking projections can be easily brought into a locked state where they are undercut coupled to the through holes forming the locking recesses. At the same time, after the locking, it is impossible to separate the locking projection piece and the through hole, thereby preventing the locked state.

  According to another configuration of the present invention, in the configuration according to claim 2, the tip of the locking projection protruding from the through hole is deformed in an open shape at the edge of the through hole. is there.

  In the above configuration, since the distal end of the expanded locking projection piece is firmly locked in the through hole, it is further difficult to separate the locking projection from the locking recess.

  According to still another configuration of the present invention, in the configuration according to claim 2, a tapered portion that gradually expands from the inside to the surface of the through hole is formed, and the tip of the locking projection piece expands in the tapered portion. It is said that it has been transformed into a shape.

  In the above configuration, it is further difficult to separate the locking projection from the locking recess, and the tip of the locking projection is prevented from protruding outside the through hole.

  In addition, another specific configuration of the present invention is a through hole formed in a front step portion between a tip tube portion in which a locking recess projects from the tip of the nozzle tube and a tip of the nozzle tube. It is said that the locking projection is a locking projection provided on an elastic arm protruding from the end face of the discharge cover portion facing the front step portion in the locked state.

  Even in the above-described configuration, the locking projection and the locking recess are set to the locked state in which the undercut coupling is performed by simply attaching the discharge cover portion to the tip of the nozzle cylinder, and after locking, the locking projection and However, it is impossible to separate the locking recess and reach the non-locking state.

  According to a further configuration of the present invention, in any one of the above claims, the discharge cover portion is rotatably connected to the tip of the nozzle cylinder via a hinge.

  In the above configuration, when the discharge cover portion is rotated in one direction, the locking concave portion and the locking convex portion are undercut coupled, and the discharge cover portion is attached to the tip of the nozzle cylinder so as not to be removable.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the present invention, after the discharge cover portion is attached to the tip of the nozzle cylinder and reaches the locked state covering the outlet, the non-locked state is not reached. As a result, the discharge cover portion is mounted in a non-removable manner, and the internal solution is not discharged through the outlet formed at the tip of the nozzle cylinder, and is always provided in the discharge cover portion and the discharge direction is always downward. Since the liquid is discharged through the set discharge port, it is possible to reliably prevent the inner solution having low viscosity from being scattered to the surroundings at the time of discharge, and to make the nozzle head excellent in safety. it can.

  Also, the locking projection is a locking protrusion formed on both side surfaces of the tip tube portion provided at the tip of the nozzle tube, and the locking recess is a through-hole formed on both sides of the discharge cover portion. With the configuration, simply attaching the discharge cover to the tip of the nozzle cylinder makes it possible to easily set the locked state by the undercut coupling and make it impossible to reach the non-locked state. It is possible to prevent the cover portion from being pulled out from the tip of the nozzle cylinder.

  In addition, in the configuration in which the tip of the locking protrusion protruding from the through hole is deformed to be widened at the edge of the through hole, the locking protrusion and the locking recess are more reliably released from the locked state. Separation is impossible, and the discharge cover portion can be prevented from being pulled out from the tip of the nozzle cylinder.

  In addition, a taper portion that gradually expands from the inside to the surface of the through hole is formed, and the tip of the locking protrusion is configured to be expanded in the taper portion. Separation from the locking recess can be prevented more reliably, and the tip of the locking projection is housed inside the through hole and does not protrude outside the through hole. Hands and the like are not damaged, and in this respect, the nozzle head can be made excellent in safety.

  The locking recess is a through hole formed in the front step portion between the tip tube portion formed at the tip of the nozzle tube and the tip of the nozzle tube, and the locking protrusion is the front step portion in the locked state. Even with a structure that is a locking protrusion provided on the elastic arm that protrudes from the end face of the discharge cover that faces the surface, simply by attaching the discharge cover to the tip of the nozzle cylinder, you can easily undercut While being able to set to the locked state by coupling, it is impossible to reach the unlocked state, and it is possible to prevent the discharge cover portion from being detached from the tip of the nozzle cylinder.

  Further, in the case where the discharge cover portion is configured to be connected to the tip of the nozzle cylinder so as to be rotatable via a hinge, the discharge cover portion can be easily and quickly moved by simply rotating the discharge cover portion in one direction. It becomes possible to attach the tip of the nozzle cylinder so as not to be removable. In addition, since the discharge cover portion can be integrally formed with the pressing head portion, the nozzle portion, the connecting portion, and the like, the number of parts can be reduced.

The locking state of the nozzle head as 1st Example of this invention is shown, A is a side view, B is a top view, C is a bottom view. The nozzle head of the first embodiment is shown in an unlocked state, in which A is a side view, B is a plan view, and C is a bottom view. It is a front view which shows the non-locking state of the nozzle head of 1st Example. It is a half sectional view in the non-locking state of the nozzle head of the 1st example. It is a half sectional view in the locked state of the nozzle head of the 1st example. It is sectional drawing equivalent to VI-VI of FIG. 1 which shows the structural example of a latching | locking part, A is the 1st structural example, B is the 2nd structural example, C has shown the 3rd structural example. It is the half sectional view which looked at the non-locking state of the nozzle head of the 2nd example from the side. It is a front view which shows the non-locking state of the nozzle head of 2nd Example. It is the fragmentary top view which expands and shows the latching | locking part in 2nd Example, A has shown the non-locking state, B has shown the latching state. It is a side view which expands partially and shows the non-locking state of the nozzle head of 2nd Example. It is a side view which expands and shows the latching state of the nozzle head of 2nd Example partially.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 6 show a nozzle head as a first embodiment of the present invention. 1 shows a locked state of the nozzle head, A is a side view, B is a plan view, C is a bottom view, FIG. 2 shows a non-locked state of the nozzle head, A is a side view, B is a plan view, C is a bottom view, FIG. 3 is a front view showing a non-locked state of the nozzle head, FIG. 4 is a half cross-sectional view of the nozzle head in a non-locked state, and FIG. 6 is a cross-sectional view corresponding to VI-VI in FIG. 1 showing a configuration example of the locking portion, A is a first configuration example, B is a second configuration example, and C is a third configuration example.

  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 the pump in a container (not shown) to the outside of the container.

  As shown in FIGS. 1 and 2, the nozzle head 1 has a pressing head portion 2, a nozzle portion 3, and a connecting portion 8. The nozzle section 3 shown in this embodiment includes a cylindrical nozzle cylinder 4 extending in a substantially horizontal direction from the side surface of the pressing head section 2, a tip cylinder section 4 </ b> A formed at the tip of the nozzle cylinder 4, and the nozzle cylinder 4. A discharge cover portion 6 that is attached to the front end so as not to be removable and covers the front tube portion 4A, and a discharge cover portion 6 that is connected between the front end of the nozzle tube 4 and the discharge cover portion 6 so as to be rotatable. And a hinge 5.

  A connecting portion 8 having a cylindrical shape is suspended from the lower surface of the top portion 2 a of the pressing head portion 2. A flow path 8 a is formed inside the connecting portion 8. By connecting the connecting portion 8 to the tip of a stem extending outside the container from a pump provided in the container (not shown), the nozzle head 1 is attached to the upper part of the mouth tube portion of the container.

  A discharge path 10 through which the internal solution flows is formed inside the nozzle cylinder 4. One end of the discharge path 10 is connected to an outlet 11 formed in the end surface of the front cylinder portion 4A, and the other end extends in the center direction of the pressing head portion 2 and communicates with a flow path 8a in the connection portion 8. .

  As shown in FIG. 3, the tip tube portion 4A formed at the tip of the nozzle tube 4 is formed with a size smaller by Δw than the tip portion of the nozzle tube 4, and the tip of the nozzle tube 4 and the base portion of the tip tube portion 4A. A front step portion 4a having an inverted U shape is formed between the two. In addition, the width dimension of the front step part 4a corresponds to Δw.

  The front step portion 4a corresponds to the end surface of the tip of the nozzle cylinder 4, and on the opposite side (on the pressing head portion 2 side), the rear step protrudes in a substantially gill shape at the lower end of the outer peripheral surface of the nozzle cylinder 4. Part 4b is formed.

  A pair of locking projections 9, 9 formed of locking protrusions 9 a protruding outward are formed in the vicinity of the front step portion 4 a and on both side surfaces of the front tube portion 4 A, respectively. The part 9 is provided with an inclined part 9b.

  The discharge cover portion 6 is formed in a hood shape, and the wall thickness of the cover wall 6b forming the discharge cover portion 6 is the same Δw as that of the front step portion 4a (see FIG. 3). Locking recesses 7 and 7 each having a square through-hole 7 a are formed on both side surfaces of the discharge cover portion 6. In addition, the latching recessed part 7 which consists of the through-hole 7a, and the latching convex part 9 which consists of the latching protrusion piece 9a comprise the latching | locking part.

  The discharge cover portion 6 is connected to the upper end portion of the nozzle cylinder 4 via the hinge 5, and the discharge cover portion 6 is in a rotatable state in an unlocked state immediately after injection molding.

Next, a method for manufacturing and assembling the nozzle head will be described.
In the injection molding of the nozzle head 1, the molding die in the non-locking posture (see FIGS. 2 and 4) in which the discharge cover portion 6 is rotated approximately 90 ° above the nozzle cylinder 4 via the hinge 5 is used. It forms and is integrally shape | molded by using the slide core provided with the pin for shaping | molding which forms the discharge path 10 from the outflow port 11 side.

  In the method of injection molding integrally with the nozzle cylinder 4 tip in a locked state without rotating the discharge cover 6 by 90 °, the molding pin has a substantially L shape. If it exceeds the allowable range of unreasonable removal, it becomes impossible to mold. However, by molding the discharge cover portion 6 in the non-locking posture rotated about 90 ° as in the present invention, the shape of the molding pin can be made substantially linear, and the molding pin It becomes possible to form easily by pulling out easily.

  After molding, from the non-locking state shown in FIG. 2, the discharge cover portion 6 is rotated so as to cover the front tube portion 4A by inserting both side surfaces of the front tube portion 4A inside the both side surfaces of the discharge cover portion 6. Then, the locking recesses 7 and 7 of the discharge cover 6 and the locking protrusions 9 and 9 of the front tube 4A are locked to each other (see FIGS. 1A and 5). At this time, the inclined portions 9b and 9b of the locking projections 9 and 9 slide on the inner surfaces on both sides of the discharge cover portion 6, respectively, and push the gap between the opposite sides. Then, the engaging projections 9a, 9a are fitted into the through holes 7a, 7a forming the engaging recesses 7, 7, and the undercut coupling is completed, whereby the assembly of the nozzle head 1 is completed.

  In this locked state, the end surface 6a of the discharge cover portion 6 contacts the end surface of the nozzle cylinder 4 which is the front stepped portion 4a, and the both side surfaces of the discharge cover portion 6 and the both side surfaces on the tip side of the nozzle tube 4 are substantially the same. Set to a plane. As shown in FIG. 5, a discharge path 12 that continues from the outlet 11 is formed between the cover wall 6 b of the discharge cover portion 6 and the end surface of the front end of the front tube portion 4 </ b> A. A discharge port 14 for setting the discharge direction of the solution downward is formed.

  In the nozzle head 1 of the present invention, when the nozzle head 1 is pressed down against the top 2a of the pressing head portion 2 with one hand, the pump in the container (not shown) pumps up the internal solution. The pumped internal solution is guided to the outlet 11 through the flow path 8 a in the connecting portion 8 and the discharge path 10 in the nozzle cylinder 4, and further discharged through the discharge path 12 in the discharge cover section 6. It leads to exit 14. At this time, the inner solution is discharged to the other hand by placing the other hand under the discharge port 14.

  In the present invention, the locking projection 9 fits into the locking recess 7 and is undercut coupled to reach the locked state, so that the discharge cover portion 6 can be easily attached to the tip of the nozzle cylinder 4. Further, once the locking portion has reached the locked state, the locking concave portion 7 and the locking convex portion 9 cannot be separated from each other and cannot be easily locked. It is possible to prevent the portion 6 from rotating in the reverse direction and prevent it from being pulled out from the tip of the nozzle cylinder 4. Thereby, the state in which the direction of the discharge port 14 of the discharge cover part 6 is always downward can be maintained, and the occurrence of an unexpected accident in which the content liquid discharged from the discharge port 14 scatters around and enters the eyes. It becomes possible to prevent reliably. That is, the nozzle head 1 having excellent safety can be obtained.

Next, a configuration example of the locking portion will be described.
In the first configuration example of the locking portion shown in FIG. 6A, the height dimension of the locking protrusion 9 a constituting the locking projection 9 in the thickness direction is set to the depth of the through hole 7 a constituting the locking recess 7. It is set smaller than the dimensions. Thereby, even if the latching protrusion 9 does not have the inclined portion 9b, the undercut coupling between the latching recess 7 and the latching protrusion 9 can be easily achieved and reliably led to the latching state. be able to.

As described above, in the first configuration example, the locking recess 7 and the locking projection 9 can be undercut coupled, but a configuration example that can be more firmly undercut coupled is a method as shown below. There is.
In the second configuration example of the locking portion shown in FIG. 6B, the dimension in the plate thickness direction of the locking projection 9 is set to be larger than the depth dimension of the locking recess 7. For convenience of explanation, the method of treating the tip of the locking projection 9 is different between the locking portion shown on the left side of FIG. 6B and the locking portion shown on the right side.

  The locking portion shown on the left side of FIG. 6B is deformed by caulking deformation while applying heat to the tip of the locking projection 9a constituting the locking projection 9 after reaching the locked state. The front end portion is crushed and expanded to the edge of the through hole (7a) so as to expand.

  In addition, the locking portion shown on the right side of FIG. 6B forms a slit 9d in the locking projection piece 9a by removing the wedge after driving the wedge into the tip of the locking projection piece 9a to deform the locking projection piece 9a. As a result, the tip end portion of the locking projection piece 9a protruding outside the through-hole 7a is expanded in an expanded manner.

  In the configuration example shown in FIGS. 6A and 6B, since the leading end portion of the locking projection piece 9a that is expanded to the outside of the through hole 7a is firmly locked to the upper edge of the through hole 7a, To the extent that force is applied, the locking protrusion 9a is prevented from coming out of the through hole 7a, and it is impossible to reach the unlocked state from the locked state. Thereby, the rotation of the discharge cover part 6 in the reverse direction is restricted to prevent the discharge cover part 6 from being pulled out from the tip of the nozzle cylinder 4, and the state in which the discharge port 14 of the discharge cover part 6 is always directed downward. Can be maintained.

  In the third configuration example of the locking portion shown in FIG. 6C, a tapered portion 7b that gradually expands from the inside toward the outside is formed on the surface side of the through hole 7a that forms the locking recess 7, and the locking protrusion The height dimension of 9a in the plate thickness direction is set smaller than the depth dimension of the through hole 7a. In addition, the process of the front-end | tip part of the latching protrusion piece 9a which forms the latching convex part 9 is the same as that of the case of the above-mentioned FIG.

  In the third configuration example of the locking portion shown in FIG. 6C, it is possible to easily set the locking state by the undercut coupling as in the first configuration example shown in FIG. 6A, and the same as the second configuration example shown in FIG. 6B. In this way, the locking portion formed by the through-hole 7a and the locking protrusion 9a cannot be moved from the locked state to the unlocked state, and the nozzle cover is restricted from rotating in the reverse direction. Therefore, it is possible to prevent the discharge port 14 from being attached to the tip end of the discharge cover portion 6 and to keep the discharge port 14 of the discharge cover portion 6 facing downward.

  7 to 11 show a nozzle head as a second embodiment of the present invention, FIG. 7 is a half sectional view of the non-locking state of the nozzle head as viewed from the side, and FIG. 8 is the non-locking state of the nozzle head. FIG. 9 is an enlarged partial plan view showing the locking portion, A is an unlocked state, B is a locked state, and FIGS. 10 and 11 are enlarged nozzle portions constituting the nozzle head. FIG. 10 is a partial side view of the nozzle head, and FIG. 10 shows an unlocked state and FIG. 11 shows a locked state.

  The nozzle head 1 shown in the second embodiment is different from the nozzle head 1 shown in the first embodiment in the structure of the locking portion, and the other portions are the same as those in the first embodiment. Will be described. The same members as those in the first embodiment will be described with the same reference numerals.

  As shown in FIG. 8, one of the locking recesses 7, 7 forming the locking portion is symmetrical to the front stepped portion 4 a that is the end surface of the tip of the nozzle tube 4, with the front tube portion 4 </ b> A sandwiched therebetween. Are formed respectively. Similarly, the other locking projections 9, 9 are also formed corresponding to the left and right positions of the end surface 6a of the discharge cover portion 6 that will face the front step portion 4a in the locked state (FIG. 11). Yes.

  As shown in FIGS. 9 and 10, one locking recess 7 is formed of a through hole 7a, and is provided between the front step portion 4a and the rear step portion 4b. As shown in FIGS. 8 and 9, the other locking projections 9, 9 are formed at a pair of elastic arms 9 c, 9 c extending in parallel from the end surface 6 a of the discharge cover portion 6, and the ends of the elastic arms 9 c, 9 c. The locking projections 9a and 9a projecting inward, which is a direction in which the elastic arms 9c and 9c face each other, and inclined portions 9b and 9b provided at the front portions of the locking projections 9a and 9a, respectively. , Are formed.

Next, a method for assembling the nozzle head 1 according to the second embodiment will be described.
The nozzle head molding method is the same as in the first embodiment.
When the discharge cover portion 6 is rotated from the non-locking state shown in FIGS. 7 and 10, the tip of the locking projection 9 is inserted into the through hole 7 a constituting the locking recess 7 from the front step portion 4 a side. The At this time, since the inclined portion 9b slides on the inner wall of the through hole 7a, the elastic arm 9c is gradually bent and deformed gradually outward as the amount of insertion increases. When the locking protrusion 9a passes through the through hole 7a, the elastic arm 9c returns to its original state, and the locking protrusion 9a locks the end surface of the rear step portion 4b, thereby achieving undercut coupling. The assembly of the nozzle head 1 is completed (see FIG. 11).

  As shown in FIG. 11, when the assembly is completed, the locking portion formed by the through-hole 7 a configuring the locking recess 7 and the locking protrusion 9 a configuring the locking projection 9 is locked. As in the first embodiment, the discharge cover 6 is attached to the tip of the nozzle cylinder 4 so as not to be removable, and the front cylinder 4A is covered with the discharge cover 6.

  In the second embodiment, since the locking protrusion 9a locks the end surface of the rear stepped portion 4b, the locking portion formed by the locking recess 7 and the locking projection 9 changes from the locked state to the non-locked state. This makes it impossible to prevent the discharge cover portion 6 from rotating in the reverse direction, thereby preventing the discharge cover portion 6 from being detached from the state attached to the tip of the nozzle cylinder 4.

  Therefore, also in the nozzle head 1 of the second embodiment, the direction of the discharge port 14 of the discharge cover portion 6 can always be set downward, and the content liquid discharged from the discharge port 14 is scattered around and enters the eyes. It is possible to prevent the occurrence of unexpected accidents.

  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 the above-described embodiment, a description has been given of a configuration in which the injection-molded discharge cover portion 6 is rotatably connected to the tip of the nozzle cylinder 4 via the hinge 5. 4 is formed separately and independently, and the engagement recess 7 and the engagement projection 9 are undercut coupled so that they can be attached to the tip of the nozzle cylinder 4 so as not to be removable. .

  Further, for example, in FIGS. 6B and 6C of the first embodiment, for the sake of explanation, the processing method of the tip portion of the locking protrusion 9a is different between the left and right locking portions. Of course, the same processing method may be used in the section.

  The nozzle head of the present invention is being used in the field of nozzle heads for manual push-down dispensing pumps for dispensing liquids with low viscosity that are difficult to solidify, such as mouth rinses and alcohol for disinfection filled in containers. This can be achieved in a wider area.

DESCRIPTION OF SYMBOLS 1; Nozzle head 2; Pressing head 2a; Top part 3; Nozzle part 4; Nozzle cylinder 4A; Lead cylinder part 4a; Front step part 4b; ; Cover wall 7; Locking convex part 7a; Through hole 7b; Tapered part 8; Connection hole 8a; Channel 9; Locking recess 9a; Locking protrusion piece 9b; Inclined part 9c; Path 11; outlet 12; discharge path 14; discharge port

Claims (6)

Nozzle cylinder provided with a pressure head part (2) attached to the tip of a stem connected to a pump, and a discharge passage (10) formed in the pressure head part (2) for guiding the liquid liquid sucked up by the pump In a nozzle head having (4) and a discharge cover portion (6) that is attached to the tip of the nozzle cylinder (4) and sets the discharge direction of the internal solution,
A locking recess (7) is provided on one of the tip of the nozzle cylinder (4) and the discharge cover part (6), and a locking projection (9) is provided on the other side. 7) and the locking projection (9) are undercut coupled so as not to be separated from each other, so that the discharge direction of the discharge port (14) formed in the discharge cover portion (6) is set downward. A nozzle head characterized by that. The locking projections (9) are locking projections (9a) formed on both side surfaces of the tip cylinder (4A) provided at the tip of the nozzle cylinder (4), and the locking recess (7) The nozzle head according to claim 1, wherein the nozzle holes are through holes (7 a) formed on both sides of the discharge cover part (6). The nozzle head according to claim 2, wherein the tip of the locking projection piece (9a) projecting from the through hole (7a) is deformed so as to expand toward the edge of the through hole (7a). A tapered portion (7b) that gradually expands from the inside to the surface of the through hole (7a) is formed, and the tip of the locking projection piece (9a) is deformed to expand in the tapered portion (7b). The nozzle head according to claim 2. A through-hole formed in the front step portion (4a) between the tip tube portion (4A) formed with a locking recess (7) protruding from the tip of the nozzle tube (4) and the tip of the nozzle tube (4) An elastic arm (9c) that is formed so as to protrude from the end surface (6a) of the discharge cover portion (6) that faces the front step portion (4a) when the locking convex portion (9) is locked. The nozzle head according to claim 1, which is a locking projection piece (9 a) provided on the nozzle head. The nozzle head according to any one of claims 1 to 5, wherein the discharge cover part (6) is rotatably connected to the tip of the nozzle cylinder (4) via a hinge (5).

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