Nozzle member

Abstract

To provide a nozzle member capable of preventing external water or the like from entering a nozzle cylinder from a discharge hole.SOLUTION: A nozzle member comprises an attachment cylinder 11 attached to a mouth part W1 of a bottle W having a content stored therein, a nozzle cylinder 12 protruding forward from the attachment cylinder, and an opening / closing member 13 externally attached to the nozzle cylinder so as to be movable in the back-and-forth direction. A boss part 17 which protrudes forward and a plurality of discharge holes 18 which is disposed around the boss part at intervals and discharges the content are formed in the front end of the nozzle cylinder. The opening / closing member is formed in a lateral topped cylindrical shape with the front end closed and the rear end opened. A front end wall 21 of the opening / closing member has: a through-hole 22 having the boss part detachably fitted thereto; and a regulation protrusion 23 protruding rearward so as to be inserted into the discharge hole, thereby regulating relative movement of the opening / closing member and the nozzle cylinder in the nozzle circumferential direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a nozzle member.

Background Art

[0002] Conventionally, for example, as shown in Patent Document 1 below, there is known a nozzle member including a mounting cylinder attached to the mouth portion of a bottle containing contents, and a nozzle cylinder protruding forward from the mounting cylinder and having a front end opening as a discharge hole for the contents.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional nozzle member, there is a risk that external water or the like may enter the nozzle cylinder from the discharge hole.

[0005] The present invention provides a nozzle member capable of suppressing external water or the like from entering the nozzle cylinder from the discharge hole.

Means for Solving the Problems

[0006] A nozzle member according to one aspect of the present invention includes a mounting cylinder mounted on the mouth of a bottle containing a content, a nozzle cylinder protruding forward from the mounting cylinder, and an opening / closing member externally mounted on the nozzle cylinder so as to be movable in the front-rear direction. At the front end of the nozzle cylinder, a boss portion protruding forward and a plurality of discharge holes arranged at intervals around the boss portion for discharging the content are formed. The opening / closing member is formed in a horizontally topped cylindrical shape with a closed front end and an open rear end. On the front end wall of the opening / closing member, a through hole into which the boss portion is detachably fitted and a regulating projection protruding rearward and inserted into the discharge hole to regulate the relative movement in the circumferential direction of the nozzle of the opening / closing member and the nozzle cylinder are provided.

[0007] Since a through hole into which the boss portion of the nozzle cylinder is detachably fitted is provided on the front end wall of the opening / closing member, the through hole of the opening / closing member is opened and closed as the opening / closing member moves back and forth with respect to the nozzle cylinder. Therefore, in a standby state where the opening / closing member is located at the rear end position with respect to the nozzle cylinder and the boss portion is fitted into the through hole of the opening / closing member, it is possible to suppress the entry of external water or the like into the nozzle cylinder through the through hole and the discharge hole. Since a regulating projection protruding rearward and inserted into the discharge hole to regulate the relative movement in the circumferential direction of the nozzle of the opening / closing member and the nozzle cylinder is provided on the front end wall of the opening / closing member, the sliding of the boss portion on the inner peripheral surface of the through hole of the opening / closing member in the circumferential direction of the nozzle is restricted, and the sealing performance between the boss portion and the through hole can be ensured.

[0008] The nozzle cylinder is formed in a horizontally topped cylindrical shape with a closed front end and an open rear end. The discharge hole includes a front hole penetrating the front end wall of the nozzle cylinder in the front-rear direction and a rear hole penetrating the peripheral wall of the nozzle cylinder in the radial direction of the nozzle diameter and extending rearward from the outer end portion in the radial direction of the nozzle diameter in the front hole. The regulating projection is inserted into the rear hole, and the nozzle cylinder and the opening / closing member may be respectively provided with a first regulating portion and a second regulating portion that engage with each other when the opening / closing member reaches the forward end position, thereby restricting further forward movement of the opening / closing member and positioning the regulating projection in the rear hole.

[0009] The discharge hole has a front hole and a rear hole, and the nozzle cylinder and the opening / closing member are each provided with a first regulating portion and a second regulating portion that engage with each other when the opening / closing member reaches the forward end position, thereby restricting further forward movement of the opening / closing member and positioning the regulating projection within the rear hole. Therefore, with the regulating projection positioned within the rear hole, at least the front hole of the discharge hole can be opened to the outside through the through hole, and the content can be smoothly discharged while restricting relative movement in the nozzle circumferential direction between the opening / closing member and the nozzle cylinder.

[0010] On the outer peripheral surface of the portion of the peripheral wall of the nozzle cylinder that is located behind the discharge hole, a sliding cylinder is provided that protrudes outward in the nozzle diameter direction and slides the inner peripheral surface of the opening / closing member in the front-rear direction as the opening / closing member moves back and forth. The outer peripheral surface of the peripheral wall of the nozzle cylinder where the rear hole opens may be separated inward in the nozzle diameter direction from the inner peripheral surface of the opening / closing member.

[0011] Since the outer peripheral surface of the peripheral wall of the nozzle cylinder where the rear hole of the discharge hole opens is separated inward in the nozzle diameter direction from the inner peripheral surface of the opening / closing member, when the opening / closing member moves forward, not only the front hole but also the portion of the rear hole that is located behind the regulating projection will be opened to the outside through the inside of the opening / closing member and the through hole, and the content inside the nozzle cylinder can be smoothly discharged to the outside. On the outer peripheral surface of the portion of the peripheral wall of the nozzle cylinder that is located behind the rear hole of the discharge hole, a sliding cylinder is provided that protrudes outward in the nozzle diameter direction and slides the inner peripheral surface of the opening / closing member in the front-rear direction as the opening / closing member moves back and forth. Therefore, the content that has flowed into the opening / closing member from the rear hole can be quickly directed toward the through hole of the opening / closing member without flowing backward.

Advantages of the Invention

[0012] According to the above aspect of the present invention, it is possible to suppress entry of external water or the like into the nozzle cylinder from the discharge hole.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0014] Hereinafter, with reference to the drawings, an embodiment of the present invention will be described. As shown in FIG. 1, the nozzle member 1 of the present embodiment includes a mounting cylinder 11, a nozzle cylinder 12, and an opening and closing member 13, and is mounted on the mouth portion W1 of a bottle W containing contents. The body portion of the bottle W is formed to be elastically deformable. Note that the body portion of the bottle W does not necessarily have to be formed to be elastically deformable.

[0015] The mounting cylinder 11 is formed in a roofed cylindrical shape having a roof wall 11a and a peripheral wall 11b, and is screwed onto the mouth portion W1. Note that the mounting cylinder 11 may be fitted into the mouth portion W1. Hereinafter, the side of the roof wall 11a along the central axis O1 of the mounting cylinder 11 is referred to as the upper side, the open end side of the peripheral wall 11b along the central axis O1 is referred to as the lower side, and the direction along the central axis O1 is referred to as the vertical direction. The direction intersecting the central axis O1 as viewed from the vertical direction is referred to as the radial direction, and the direction orbiting around the central axis O1 as viewed from the vertical direction is referred to as the circumferential direction. On the inner peripheral surface of the lower part of the peripheral wall 11b, a female thread that screws into the male thread formed on the mouth portion W1 is formed. A vertical supply cylinder 14 extending downward is formed on the roof wall 11a. The central axis of the vertical supply cylinder 14 is radially separated from the central axis O1 of the mounting cylinder 11. Hereinafter, among the radial directions, the side where the central axis of the vertical supply cylinder 14 is separated from the central axis O1 of the mounting cylinder 11 is referred to as the rear side, and the opposite side is referred to as the front side.

[0016] The nozzle cylinder 12 protrudes forward from the mounting cylinder 11. The nozzle cylinder 12 extends forward from the upper end of the vertical supply cylinder 14. The nozzle cylinder 12 is formed in a horizontally roofed cylindrical shape with its front end closed and its rear end open. Hereinafter, the direction intersecting the central axis O2 of the nozzle cylinder 12 as viewed from the front-rear direction is referred to as the nozzle diameter direction, and the direction orbiting around the central axis O2 as viewed from the front-rear direction is referred to as the nozzle circumferential direction.

[0017] The nozzle cylinder 12 includes a base cylinder portion 15 and a main body cylinder portion 16. The base cylinder portion 15 extends forward from the upper end of the vertical supply cylinder 14 and is integrally formed with the mounting cylinder 11. The front end portion of the base cylinder portion 15 protrudes forward from the peripheral wall 11b of the mounting cylinder 11. The base cylinder portion 15 is formed in a cylindrical shape with both front and rear ends open. The main body cylinder portion 16 is formed in a horizontally roofed cylindrical shape with its front end closed and its rear end open, and is fixed to the base cylinder portion 15. The front end wall 20 of the main body cylinder portion 16 extends forward as it goes from the outside to the inside in the nozzle diameter direction. Note that the front end wall 20 of the main body cylinder portion 16 may extend straight in the nozzle diameter direction, for example. The front portion of the main body cylinder portion 16 protrudes forward from the base cylinder portion 15. The rear portion of the main body cylinder portion 16 is fitted inside the base cylinder portion 15. Concavo-convex portions 28 that engage with each other in the nozzle circumferential direction are formed on the outer peripheral surface of the rear portion of the main body cylinder portion 16 and the inner peripheral surface of the base cylinder portion 15. Thereby, the relative movement of the main body cylinder portion 16 and the base cylinder portion 15 in the nozzle circumferential direction is restricted.

[0018] A boss portion 17 and a plurality of discharge holes 18 are formed at the front end portion of the nozzle cylinder 12. The boss portion 17 and the discharge holes 18 are formed at the front end portion of the main body cylinder portion 16. The boss portion 17 protrudes forward from the front end wall 20 of the main body cylinder portion 16. The boss portion 17 is disposed coaxially with the central axis O2. As shown in FIG. 2, a plurality of discharge holes 18 are arranged at intervals around the boss portion 17 and open forward. A plurality of intervals are provided between the discharge holes 18 adjacent to each other in the nozzle circumferential direction, and one of these intervals is different in size in the nozzle circumferential direction from the other intervals. In the illustrated example, three such intervals are provided, and one of these intervals is larger in size in the nozzle circumferential direction than the other intervals.

[0019] The discharge hole 18 includes a front hole 18a and a rear hole 18b. The front hole 18a penetrates the front end wall 20 of the main body cylinder portion 16 in the front-rear direction. The rear hole 18b penetrates the peripheral wall 19 of the main body cylinder portion 16 in the nozzle radial direction and extends rearward from the outer end portion in the nozzle radial direction of the front hole 18a. The position in the nozzle circumferential direction at the outer end portion in the nozzle radial direction of the front hole 18a coincides with the position in the nozzle circumferential direction of the rear hole 18b extending rearward from this front hole 18a. The rear end portion of the rear hole 18b is located in front of the base cylinder portion 15.

[0020] The opening and closing member 13 is externally mounted on the nozzle cylinder 12 so as to be movable in the front-rear direction. The opening and closing member 13 is formed in a horizontally oriented toped cylindrical shape with its front end closed and its rear end open.

[0021] A through hole 22 and a regulating projection 23 are provided on the front end wall 21 of the opening and closing member 13. The boss portion 17 of the nozzle cylinder 12 is detachably and liquid-tightly fitted into the through hole 22. As the opening and closing member 13 moves back and forth, the boss portion 17 is detached from and attached to the through hole 22, thereby switching the communication between the discharge hole 18 and the outside through the through hole 22 and the blocking thereof. The through hole 22 is arranged coaxially with the central axis O2. An annular groove 22a surrounding the through hole 22 from the outer side in the nozzle radial direction is formed on the front surface of the front end wall 21 of the opening and closing member 13. An annular ridge portion 22b surrounding the through hole 22 from the outer side in the nozzle radial direction is formed at a portion corresponding to the annular groove 22a on the rear surface of the front end wall 21 of the opening and closing member 13. The regulating protrusion 23 protrudes rearward from the front end wall 21 of the opening and closing member 13 and is inserted into the discharge hole 18 to regulate the relative movement in the nozzle circumferential direction between the opening and closing member 13 and the nozzle cylinder 12. The regulating protrusion 23 is in contact with or close to the circumferential end surfaces of the inner surface of the discharge hole 18 that face each other in the nozzle circumferential direction in the nozzle circumferential direction. The regulating protrusion 23 is inserted into the rear hole 18b of the discharge hole 18. The regulating protrusion 23 is curved along the nozzle circumferential direction. The outer peripheral surface of the regulating protrusion 23 is located at a position in the nozzle radial direction equivalent to the outer peripheral surface at the front end of the peripheral wall 19 of the main body cylinder portion 16. A plurality of regulating protrusions 23 are provided at intervals in the nozzle circumferential direction. The intervals between the regulating protrusions 23 adjacent to each other in the nozzle circumferential direction are provided in plurality, and one of these intervals is different in size in the nozzle circumferential direction compared to the other intervals. In the illustrated example, the said intervals are provided at three locations, and one of these intervals is larger in size in the nozzle circumferential direction compared to the other intervals.

[0022] As shown in FIG. 3, the nozzle cylinder 12 and the opening and closing member 13 are each provided with a first regulating portion 25 and a second regulating portion 26 that engage with each other when the opening and closing member 13 reaches the forward end position, thereby regulating further forward movement of the opening and closing member 13 and positioning the regulating protrusion 23 within the rear hole 18b of the discharge hole 18. The first regulating portion 25 of the nozzle cylinder 12 protrudes outward in the nozzle radial direction from the front end of the base cylinder portion 15 and extends continuously over the entire length in the nozzle circumferential direction. The second regulating portion 26 of the opening and closing member 13 protrudes inward in the nozzle radial direction from the peripheral wall 13a of the opening and closing member 13 and extends continuously over the entire length in the nozzle circumferential direction. The second regulating portion 26 is located rearward of the first regulating portion 25 and faces the first regulating portion 25 in the front-rear direction.

[0023] Here, in the process of assembling the opening and closing member 13 to the nozzle cylinder 12 by causing the second regulating portion 26 of the opening and closing member 13 to cross over from the front to the rear with respect to the first regulating portion 25 of the nozzle cylinder 12, when the second regulating portion 26 is positioned in front of the first regulating portion 25 and is in contact with the first regulating portion 25 in the front-rear direction, the rear end portion of the regulating projection 23 is positioned within the front end portion of the rear hole 18b of the discharge hole 18. At this time, the through hole 22 is separated from the boss portion 17 toward the front. Thereby, the opening and closing member 13 can be easily assembled to the nozzle cylinder 12.

[0024] On the outer peripheral surface of the circumferential wall 19 of the main body cylinder portion 16 in the nozzle cylinder 12, at a portion located behind the discharge hole 18, a sliding cylinder 27 is provided that protrudes outward in the nozzle diameter direction and slides the inner peripheral surface of the opening and closing member 13 in the front-rear direction as the opening and closing member 13 moves back and forth. The inner peripheral surface of the sliding cylinder 27 faces the rear hole 18b of the discharge hole 18 in the nozzle diameter direction. The sliding cylinder 27 is in liquid-tight contact with the inner peripheral surface of the opening and closing member 13 over the entire circumference. The outer peripheral surface of the circumferential wall 19 of the main body cylinder portion 16 where the rear hole 18b of the discharge hole 18 opens is separated from the inner peripheral surface of the opening and closing member 13 toward the inner side in the nozzle diameter direction.

[0025] Here, a foaming member 31 is fitted into the vertical supply cylinder 14. The foaming member 31 has meshes disposed at both upper and lower end openings of a cylinder extending in the vertical direction. In the illustrated example, the foaming member 31 is divided into two parts vertically. The foaming member 31 is provided in a portion of the vertical supply cylinder 14 that is located below the connection portion with the rear end portion of the nozzle cylinder 12. A connection cylinder member 32 extending downward is connected to the vertical supply cylinder 14. An air supply hole 32a is formed in the connection cylinder member 32 to communicate the inside of the bottle W with a portion of the vertical supply cylinder 14 that is located below the foaming member 31. The upper end portion of the suction pipe 33 is fitted into the connection cylinder member 32 in a liquid-tight manner. The upper end portion of the suction pipe 33 is located below the air supply hole 32a. The lower end portion of the suction pipe 33 is located inside the bottom of the bottle W.

[0026] When the body of bottle W is pressed radially inward, the contents of bottle W are supplied through the suction pipe 33 into the gas-liquid mixing chamber 14a located below the foaming member 31 and above the upper end of the suction pipe 33 in the vertical supply cylinder 14, and the air in bottle W is supplied through the air supply hole 32a. As a result, a gas-liquid mixture in which the contents and air are mixed is generated in the gas-liquid mixing chamber 14a, and this gas-liquid mixture passes through the foaming member 31, inside the nozzle cylinder 12, the discharge hole 18, inside the opening / closing member 13, and the through hole 22 in this order and is discharged to the outside. Note that the gas-liquid mixture becomes a foam in the gas-liquid mixing chamber 14a, and the foam quality is adjusted by passing through the foaming member 31.

[0027] As described above, according to the nozzle member 1 of the present embodiment, since the through hole 22 in which the boss portion 17 of the nozzle cylinder 12 is detachably fitted is provided in the front end wall 21 of the opening / closing member 13, the through hole 22 of the opening / closing member 13 is opened and closed as the opening / closing member 13 moves back and forth with respect to the nozzle cylinder 12. Therefore, in the standby state where the opening / closing member 13 is located at the retracted end position with respect to the nozzle cylinder 12 and the boss portion 17 is fitted into the through hole 22 of the opening / closing member 13, it is possible to suppress the entry of external water or the like into the nozzle cylinder 12 through the through hole 22 and the discharge hole 18.

[0028] Since the front end wall 21 of the opening / closing member 13 is provided with a regulating projection 23 that protrudes rearward and is inserted into the discharge hole 18 to regulate the relative movement in the nozzle circumferential direction between the opening / closing member 13 and the nozzle cylinder 12, the boss portion 17 is restricted from sliding in the nozzle circumferential direction on the inner peripheral surface of the through hole 22 of the opening / closing member 13, and the sealing performance between the boss portion 17 and the through hole 22 can be ensured.

[0029] The discharge hole 18 includes a front hole 18a and a rear hole 18b. On the nozzle cylinder 12 and the opening / closing member 13, when the opening / closing member 13 reaches the forward end position, a first restricting portion 25 and a second restricting portion 26 are respectively provided which engage with each other to restrict further forward movement of the opening / closing member 13 and position the restricting projection 23 within the rear hole 18b. Therefore, with the restricting projection 23 positioned within the rear hole 18b, at least the front hole 18a of the discharge hole 18 can be opened to the outside through the through hole 22, and the content can be smoothly discharged while restricting relative movement in the nozzle circumferential direction between the opening / closing member 13 and the nozzle cylinder 12.

[0030] Of the peripheral wall 19 of the main body cylinder portion 16 in the nozzle cylinder 12, the outer peripheral surface where the rear hole 18b of the discharge hole 18 opens is separated from the inner peripheral surface of the opening / closing member 13 toward the inner side in the nozzle diameter direction. Therefore, when the opening / closing member 13 moves forward, not only the front hole 18a but also the portion of the rear hole 18b located behind the restricting projection 23 will be opened to the outside through the inside of the opening / closing member 13 and the through hole 22, and the content within the nozzle cylinder 12 can be smoothly discharged to the outside. On the outer peripheral surface of the portion of the peripheral wall 19 of the main body cylinder portion 16 that is located behind the rear hole 18b of the discharge hole 18, a sliding cylinder 27 is provided that protrudes toward the outside in the nozzle diameter direction and slides the inner peripheral surface of the opening / closing member 13 in the front-rear direction as the opening / closing member 13 moves back and forth. Therefore, the content that has flowed into the opening / closing member 13 from the rear hole 18b can be quickly directed toward the through hole 22 of the opening / closing member 13 without flowing back backward.

[0031] Note that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0032] For example, the discharge hole 18 may include only one of the front hole 18a and the rear hole 18b. The sliding cylinder 27 may not be provided on the nozzle cylinder 12. The peripheral wall 19 of the main body cylinder portion 16 in the nozzle cylinder 12 may contact the inner peripheral surface of the opening / closing member 13. As the nozzle cylinder 12, a configuration in which the base cylinder portion 15 and the main body cylinder portion 16 are integrally formed may be adopted.

[0033] In addition, within the scope not departing from the gist of the present invention, it is possible as appropriate to replace the constituent elements in the above-described embodiment with well-known constituent elements, and the above-described embodiment and the modification examples may also be combined as appropriate.

Explanation of Reference Numerals

[0034] 1 Nozzle member 11 Mounting cylinder 12 Nozzle cylinder 13 Opening / closing member 17 Boss portion 18 Discharge hole 18a Front hole 18b Rear hole 19 Peripheral wall of the main body cylinder portion (peripheral wall of the nozzle cylinder) 20 Front end wall of the nozzle cylinder 21 Front end wall of the opening / closing member 22 Through hole 23 Regulation projection 25 First regulation portion 26 Second regulation portion 27 Sliding cylinder W Bottle W1 Mouth portion

Claims

1. A mounting cylinder mounted on the mouth of a bottle containing a content, A nozzle cylinder protruding forward from the mounting cylinder, An opening / closing member externally mounted on the nozzle cylinder so as to be movable in the front-rear direction, and comprising: At the front end of the nozzle cylinder, A boss portion protruding forward, A plurality of discharge holes arranged at intervals around the boss portion for discharging the content are formed, The opening / closing member is formed in a horizontally-oriented capped cylindrical shape with a closed front end and an open rear end, On the front end wall of the opening / closing member, A through hole into which the boss portion is detachably fitted, A regulating protrusion protruding rearward, inserted into the discharge hole, and regulating the relative movement in the nozzle circumferential direction between the opening / closing member and the nozzle cylinder is provided, a nozzle member.

2. The nozzle cylinder is formed in a horizontally-oriented capped cylindrical shape with a closed front end and an open rear end, The discharge hole A front hole penetrating the front end wall of the nozzle cylinder in the front-rear direction, A rear hole penetrating the circumferential wall of the nozzle cylinder in the nozzle diameter direction and extending rearward from the outer end portion in the nozzle diameter direction of the front hole, and comprising: The regulating protrusion is inserted into the rear hole, On the nozzle cylinder and the opening / closing member, when the opening / closing member reaches the forward end position, a first regulating portion and a second regulating portion are respectively provided for regulating further forward movement of the opening / closing member by engaging with each other and positioning the regulating protrusion in the rear hole, the nozzle member according to claim 1.

3. On the outer peripheral surface of a portion of the circumferential wall of the nozzle cylinder located rearward of the discharge hole, a sliding cylinder protruding outward in the nozzle diameter direction and sliding the inner peripheral surface of the opening / closing member in the front-rear direction as the opening / closing member moves back and forth is provided, The outer peripheral surface of the circumferential wall of the nozzle cylinder where the rear hole opens is separated inward in the nozzle diameter direction from the inner peripheral surface of the opening / closing member, the nozzle member according to claim 2.

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