JP2010042827A - Pump type discharging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump type discharging container that reliably prevents entry of water into a suction portion able to suck a large quantity of outside air. <P>SOLUTION: A space section 44, which is closed by a lid 40, is formed at the top of the nozzle 4. A portion of this space section 44 is formed in the shape of a recess 44a projecting outward from the peripheral face of an outer cylinder 42. A suction port 45 for sucking outside air is formed in the external wall of the recess 44a. The space section 44 inside the recess 44a is permitted to communicate with a passage H between an inner cylinder 41 and the outer cylinder 42 via a communication hole 46. In addition, a skirtlike cover 47 extending downward from the outer edge portion of the top of the nozzle 4 stretches lower than the suction port 45 so as to be away outward from the recess 44a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, the nozzle body protruding upward from the cap of the container is moved up and down as a depressing head, and the content liquid stored in the container is discharged from the discharge port of the nozzle body as it is or in a bubble state. In particular, the present invention relates to a pump-type discharge container provided with an intake hole for sucking outside air.

  Pump-type discharge with a pump mechanism that contains liquids such as shampoo, hand soap, facial cleanser, hair conditioner, shaving agent, etc., and a nozzle body, cylinder body, and piston body as the main components. Various types of containers have been proposed and commercialized in the past. In such a pump-type discharge container, the top plate portion of the cap is penetrated by operating the nozzle body protruding upward from the cap of the container. The piston body connected to the nozzle body moves up and down by a predetermined range in a state where the piston body is always biased upward by a spring force inside the cylinder body suspended from the mouth portion of the container in the container, The liquid stored in the container is sucked up from the lower end of the cylinder body, passes through the hollow shafts of the piston body and the nozzle body, and remains as it is or in a bubble state in which air is mixed. It is adapted to be discharged to the outside of the container from the discharge port of Le body.

  In such a pump-type discharge container, since it is necessary to newly supply air into the container that becomes negative pressure by discharge by the pump mechanism, conventionally, the guide stem portion of the cap, the nozzle body, However, in such a case, water adhering to the outer peripheral surface of the guide stem portion is easily sucked together with air, so that water may easily enter the container. There is. Moreover, since sufficient air cannot be sucked in quickly with only a narrow gap, there is an inconvenience when a large amount of contents are to be discharged quickly.

On the other hand, an intake port for sucking outside air separately from the gap in the portion where the guide stem portion (guide stem 23) of the cap (base cap portion 14) and the nozzle body (bubble ejector 13) are in sliding contact with each other ( An outside air intake 32) is formed in the outer cylinder part (skirt-like cover 25) of the nozzle body (foam discharge device 13), and the "outside upper side and The provision of a protective wall 33 "extending in the vicinity of the circumferential direction is conventionally known from the following patent document.
JP 2007-275777 A

  By the way, in the conventionally well-known pump-type discharge container as described above, an intake port (outside air intake port 32) is formed in the outer cylinder portion (skirt-shaped cover 25) of the nozzle body (foam discharge device 13). In addition, water is not sucked in together with air from the gap where the guide stem portion (guide stem 23) and the nozzle body (foam discharge device 13) are in sliding contact with each other, and the “outside of the intake port (outside air intake port 32)” By providing the defensive wall 33 "extending upward and in the vicinity of the circumferential direction, scattered water can be prevented from entering the intake port (outside air intake port 32) from above or from the side.

  However, since the intake port (outside air intake port 32) is formed in the outer cylinder portion (skirt-shaped cover 25) of the nozzle body (foam discharge device 13), for example, the container is in a laid-down state or the container If it is held obliquely downward, the water adhering to the outer peripheral surface of the outer cylinder part (skirt-shaped cover 25) will flow along the outer peripheral surface and be disturbed by the “defense wall 33”. There is a risk of reaching the vicinity of the intake port (outside air intake port 32) and entering the container from the intake port (outside air intake port 32).

  If external water enters the container, the lubricant such as silicon that is normally applied to the cylinder part is washed away to deteriorate the slidability of the piston body, or mixed into the content liquid stored in the container. In particular, in the case of a foaming container in which air is mixed with the content liquid and discharged in a foam state, the cylinder body and the piston body may cause a change in color and scent. If a large amount of water accumulates in the created air chamber, the ratio of the content liquid and air sent into the mixing chamber will be different from that at the start of use, so the problem arises that the foam quality will differ from the designed one. Or the water that enters the container is often dirty, so it easily accumulates in the air cylinder and generates mold, etc. In this case, the mold odor is sent into the mixing chamber by pumping This That is, there is a possibility that also caused a problem that aroma exacerbated the bubble to be discharged.

  An object of the present invention is to solve the above-described problems. Specifically, with respect to a pump-type discharge container, it is ensured that water enters an intake port that can suck a large amount of outside air. The problem is to provide it so that it can be prevented.

  In order to solve the above-described problems, the present invention provides a piston that can move up and down by a predetermined range in a state where it is always urged upward, inside a cylinder body suspended in the container from the mouth of the container. The cap is attached to the mouth of the container so as to cover the piston body from above, and a cylindrical guide stem portion is provided above the peripheral edge of the opening formed in the central portion of the top plate. The nozzle body which is erected and is arranged outside the container and has a discharge port includes an inner cylinder portion which is connected to the piston body to form a discharge passage, and an outer cylinder which moves up and down along the outer peripheral surface of the guide stem portion. In a pump-type discharge container in which a part is integrally formed and a space between the inner cylinder part and the outer cylinder part serves as an air passage for introducing outside air into the container, a lid is formed on the top of the nozzle body. A space portion that is closed by the body is formed, and a part of this space portion is the outer cylinder portion. It is formed in a recess protruding outward from the outer peripheral surface, and an air inlet for sucking outside air is opened in the outer wall of this recess, and the space inside the recess is between the inner cylinder part and the outer cylinder part And a skirt-like cover portion that hangs downward from the outer edge portion of the top of the nozzle body and is formed to extend outward from the recess and further downward than the intake port. It is characterized by this.

  According to the pump type discharge container of the present invention as described above, a large amount of outside air is not introduced from the gap between the outer cylinder part of the nozzle body and the guide stem part of the cap, but from the intake port opened to the nozzle body. It can be introduced quickly, and a large amount of contents can be discharged quickly, and when the container is upright, the skirt-like cover can prevent water from entering from the air inlet. In addition, since the air inlet is opened in the outer wall of the recess protruding outward from the outer peripheral surface of the outer cylindrical portion of the nozzle body, for example, the container is in a laid-down state, or the container is held obliquely downward If the water attached to the outer peripheral surface of the outer cylinder part flows toward the intake port, the bottom wall of the recess serves as a bank to prevent water from entering the intake port. Effective to prevent water from entering the container It is possible to prevent.

  For the pump type discharge container, the purpose of providing an intake port capable of sucking in a large amount of outside air so as to reliably prevent water from entering, as specifically shown in the following examples as the best mode A space portion closed by the lid is formed on the top of the nozzle body, and a part of the space portion is formed in a recess protruding outward from the outer peripheral surface of the outer cylinder portion, and is formed on the outer wall of the recess. The air intake port for sucking in the outside air is opened, and the space inside the recess is communicated with the air passage between the inner cylinder part and the outer cylinder part, and also hangs downward from the outer edge part of the top part of the nozzle body. This was realized by forming the skirt-shaped cover part so as to extend outwardly from the recess and further downward than the intake port.

  The pump-type discharge container of the present embodiment contains a liquid containing a surfactant such as shampoo, hand soap, facial cleanser, hair styling agent, shaving agent, etc. in the container body, as shown in FIG. The nozzle body 4 has a pump structure composed of a nozzle body 4, a cylinder body 5 and a piston body 6. The nozzle body 4 is positioned above the cap 3 outside the container body 2, and the cylinder body 5 A piston body 6 comprising an air piston 7 and a liquid piston 8 that is suspended from the mouth portion of the main body 2 is arranged inside the cylinder body 5 fixed to the lower surface side of the cap 3 so as to be movable up and down. It is installed.

  The cap 3 attached to the mouth of the container has an opening at the center of the top plate 32, and a cylindrical guide stem 31 is provided upright from the periphery of the opening. On the other hand, the nozzle body 4 disposed on the outside of the container is connected to the upper end portion of the piston body 6 to form the discharge passage on the inner side, and the guide stem portion 31 of the cap 3. The outer cylinder portion 42 that moves up and down along the outer peripheral surface is integrally formed, and the nozzle body 4 is integrally connected to the piston body 6 while being guided by the guide stem portion 31 of the cap 3. It moves up and down with it.

  The nozzle body 4 and the piston body 6 that move up and down integrally with respect to the cylinder body 5 fixed to the lower surface side of the cap 3 are a spring force of a coil spring 11 interposed between the cylinder body 5 and the piston body 6. 2, the nozzle body 4 and the piston body 6 are pushed down against the biasing force of the coil spring 11 from the upper limit position of the nozzle body 4 as shown in FIG. The nozzle body 4 can be pushed down to the lower limit position.

  The pump structure of the pump-type discharge container 1 as described above will be described in more detail. The cap 3 that is detachably attached to the mouth portion of the container body 2 includes a top plate portion 32 having an opening at the center, A cylindrical guide stem portion 31 that rises upward from the periphery of the opening of the top plate portion 32 and a cylindrical skirt portion 33 that hangs down from the peripheral edge of the top plate portion 32 are integrally formed. On the inner surface side of the portion 33, a screw portion for screwing with the mouth portion of the container body 2 is formed, and on the lower surface of the top plate portion 32, a cylindrical cylinder holding portion and a cylindrical piston contact portion are formed. It is drooping concentrically.

  The cylinder body 5 is formed by injection molding of a thermoplastic resin or the like so that the large-diameter cylindrical air cylinder 51 and the small-diameter cylindrical liquid cylinder 52 are concentrically connected via a frustoconical connecting portion. The flange portion formed at the upper end of the air cylinder 51 is sandwiched by the lower surface side of the top plate portion 32 of the cap 3 so that the cylinder body 5 The upper end portion is integrally fixed to the cap 3 concentrically, and the cap body 3 is attached (screwed) to the mouth portion of the container body 2 so that the cylinder body 5 moves downward (from the mouth portion of the container body 2 ( It will be suspended in the container.

  Such a cylinder body 5 is provided with an air hole E for introducing air into the head space of the container body 2 (a space above the liquid level in the container) above the air cylinder 51. A funnel-shaped valve seat portion is formed at the lower end of the liquid cylinder 52, and the liquid contained in the container body 2 is placed in the liquid cylinder 52 below the valve seat portion. A liquid introduction pipe 15 for introduction is connected by press fitting, and the lower end of the liquid introduction pipe 15 extends to the vicinity of the bottom of the container body 2.

  The piston body 6 disposed in the cylinder body 5 so as to be movable up and down includes an air piston 7 and a liquid piston 8 which are integrally molded as individual parts by injection molding of thermoplastic resin, etc. The piston body 6 is concentrically and integrally connected, the air piston 7 slides along the cylinder wall inner surface of the air cylinder 51, and the liquid piston 8 is the cylinder wall inner surface of the liquid cylinder 52. The upper end of the piston body 6 (the upper portion of the stem portion 71 of the air piston 7) is connected to the lower end of the inner cylinder portion 41 of the nozzle body 4.

  The air piston 7 of the piston body 6 connects a small-diameter cylindrical stem portion 71 located in the upper portion thereof and a large-diameter cylindrical piston portion 73 located in the lower portion thereof via an intermediate connecting portion 72. The piston 73 is formed integrally, and the lower end of the piston portion 73 can ensure sufficient airtightness with the inner surface of the cylinder wall of the air cylinder 51, and lightly slides up and down with respect to the inner surface of the cylinder wall. A sliding seal portion having a predetermined width is integrally formed so as to be movable.

  The sliding seal portion of the piston portion 73 of the air piston 7 is formed with a predetermined width and is in close contact with the inner surface of the cylinder wall of the air cylinder 51 at both upper and lower ends in the width direction. In the state where the air piston 7 is at the upper limit position with respect to the opened air hole E, the sliding seal portion of the piston portion 73 closes the air hole E as shown in FIG. 7 is pushed down from the upper limit position, and the sliding seal portion of the piston portion 73 moves downward, so that the air hole E is opened as shown in FIG.

  The upper portion of the stem portion 71 of the air piston 7 serves as a connection portion with the nozzle body 4 (a portion where the lower portion of the inner cylinder portion 41 of the nozzle body 4 is externally fitted), and the lower portion serves as a connection portion with the liquid piston 8. The upper portion of the stem portion 71 regulates the lower limit position when the inner cylinder portion 41 of the nozzle body 4 is fitted, and is used for the liquid. In order to regulate the upper limit position when the upper end of the piston 8 is inserted, the diameter of the piston 8 is reduced to a cylindrical portion having a smaller diameter than the lower portion.

  The liquid piston 8 of the piston body 6 has a substantially cylindrical shape as a whole, and on the inner surface side of the upper end portion thereof, a bowl-shaped (or funnel-shaped) valve seat portion whose diameter increases as the inner diameter increases upward. An annular protrusion 81 having a radial protrusion at the outer edge is formed on the outer peripheral surface of the midway part, and near the lower end of the liquid cylinder 52 (liquid cylinder 52) on the inner surface side of the lower end part. The upper end of the coil spring 11 is in contact with the lower end of the cylindrical locking body 12 mounted inside. The piston body 6 is always urged upward in the cylinder body 5 by the spring force of the coil spring 11, and the lower limit position of the piston body 6 in the cylinder body 5 by the annular protrusion 81 as shown in FIG. Is regulated.

  By the cylinder body 5 and the piston body 6 having the above-described structure, an air chamber A is formed outside the liquid piston 8 inside the air cylinder 51 covered with the air piston 7. A liquid chamber B is formed inside the liquid cylinder 52, and a mixing chamber C is formed above the liquid chamber B and inside the upper portion of the stem portion 71 of the air piston 7. Air is introduced into the container body 2. An air hole E for opening air is formed in the upper portion of the air cylinder 51, and an air intake hole F for sucking air into the air chamber A is formed in the intermediate connecting portion 72 of the air piston 7.

  And in order to form the air passage D for sending air from the air chamber A to the mixing chamber C in the part from the lower end of the stem part 71 in which the liquid piston 8 is press-fitted to the mixing chamber C, the stem A plurality of (preferably 3 to 7) vertical grooves (air passages D) are formed radially (with a constant interval in the circumferential direction) on the lower inner surface side of the portion 71. The vertical groove (or rib) for forming the air passage D between the inner surface of the stem portion 71 and the outer surface of the liquid piston 8 is not for the inner surface of the stem portion 71 of the air piston 7 but for the liquid. It may be provided on the outer surface side of the piston 8.

  As described above, the cylinder body 5 and the piston body 6 form the air chamber A, the liquid chamber B, the mixing chamber C, and the air passage D, respectively, and an air hole E is opened in the cylinder body 5 (upper part of the air cylinder 51). The piston body 6 (the intermediate coupling portion 72 of the air piston 7) has an intake hole F, whereas the valve seat formed near the lower end of the liquid cylinder 52 has a ball valve (bottom Ball) 13 is placed, and the valve seat portion and the ball valve 13 constitute a first check valve for opening an inlet at the lower end of the liquid chamber B when the liquid chamber B has a negative pressure. .

  Further, inside the liquid piston 8 and the liquid cylinder 52, a rod-shaped valve body 14 having an inverted frustoconical valve body formed on the outer surface side of the upper end is disposed. A cylindrical locking body 12 capable of passing liquid is mounted above the valve seat portion, and a lower end portion of the rod-shaped valve body 14 is held by the cylindrical locking body 12 so as to be movable up and down by a predetermined range. Therefore, the valve seat portion formed at the upper end portion of the liquid piston 8 and the valve body portion formed at the upper end portion of the rod-shaped valve body 14 are arranged so that the upper end of the liquid chamber B is pressurized when the liquid chamber B is pressurized. A second check valve for opening the outlet is configured.

  Further, when the air chamber A whose volume is changed by the vertical movement of the piston body 6 (when the piston body 6 is lifted), the air chamber A is inserted into the air chamber A from the intake hole F formed in the intermediate coupling portion 72 of the air piston 7. Air is introduced into the air chamber A, and when the air chamber A is pressurized (when the piston body 6 is lowered), air is supplied to the mixing chamber C from the air chamber A through the air passage D. A third check valve common to the air passage D is an annular protrusion formed on the lower surface outside the intake hole F of the intermediate coupling portion 72 of the air piston 7 and the outer peripheral surface of the midway portion of the liquid piston 8. It is comprised by the upper surface of 81 and the elastic valve body 16 made from a soft synthetic resin.

  The elastic valve body 16 is integrally formed with a thin annular outer valve portion extending outward from the vicinity of the lower end of the short cylindrical tubular base portion and a thin annular inner valve portion extending inward. The air piston 7 is disposed concentrically with the liquid piston 8 between the intermediate connecting portion 72 of the air piston 7 and the annular protrusion 81 of the liquid piston 8, and the intermediate connecting portion 72 of the air piston 7. The upper end of the air chamber A is supported with the lower end of the cylindrical base supported by an appropriate number of radial projections formed on the outer end of the annular protrusion 81 of the liquid piston 8. Is positioned on the part.

  In such a third check valve, when the air chamber A is at atmospheric pressure, the outer valve portion of the elastic valve body 16 contacts the lower surface of the intermediate coupling portion 72, and the inner valve portion is the upper surface of the annular protrusion 81. , Both the inlet of the air passage D and the intake hole F are closed, and when the piston body 6 descends and the inside of the air chamber A is pressurized, the inner valve portion of the elastic valve body 16 Is displaced upward (elastically deformed) and separated from the annular protrusion 81, the inlet of the air passage D is opened, and when the piston body 6 rises and the air chamber A becomes negative pressure, the outside of the elastic valve body 16 The intake hole F is opened when the direction valve portion is displaced downward (elastically deformed) and separated from the intermediate coupling portion 72.

  The nozzle body 4 serving as a push-down head of the pump-type discharge container 1 is located after the bubble passage G extending from the outlet (downstream side) of the mixing chamber C to the discharge port 43 directly above the cylinder of the cylindrical inner cylinder portion 41. It is formed in an inverted L shape so as to extend to the discharge port 43 along the top portion, and is spaced from the top portion of the nozzle body 4 where the discharge port 43 is formed with the inner cylinder portion 41. Concentrically, an outer cylinder part 42 having a larger diameter than the inner cylinder part 41 is integrally suspended.

  The lower end of the inner cylinder portion 41 of the nozzle body 4 is integrally connected to the stem portion 71 of the air piston 7 by fitting the upper end portion of the stem portion 71 of the air piston 7 from below into the cylinder. The connecting portion passes through an opening formed in the central portion of the top plate portion 32 of the cap 3, so that the nozzle body 4 and the piston body 6 respectively disposed inside and outside the container body 2 are caps. 3 will be integrally connected.

  In addition, a porous body holder 17 in which a sheet-like porous body is stretched at both ends is connected to the foam passage G of the nozzle body 4 on the downstream side of the mixing chamber C prior to the connection with the air piston 7. The porous body holder 17 is inserted into the inside and is used for passing the foam formed in the mixing chamber C and homogenizing it. For example, a porous body holder 17 such as a net knitted with a synthetic resin yarn is used. A porous sheet is welded and attached to both ends of a cylindrical synthetic resin spacer, and is downstream (closer to the discharge port 43) than the mesh of the porous sheet on the upstream side (side near the mixing chamber C). The mesh of the porous sheet on the side) is formed to be finer.

  The usage state of the pump-type discharge container of the present embodiment as described above will be briefly described. From the production until the consumer starts using the nozzle body 4 and the piston body 6 as shown in FIG. In this state, the air hole E, which is an outside air introducing means into the container, is closed by the sliding seal portion of the air piston 7, and the first check valve and the rod-shaped valve body 14 by the ball valve 13 are closed. The second check valve and the third check valve by the elastic valve body 16 are all closed.

  From such a state, when the nozzle body 4 is first pushed down and the nozzle body 4 and the piston body 6 are lowered to the lower limit position as shown in FIG. 2, the first check valve by the ball valve 13 is closed and the liquid is discharged. While the lower end inlet of the chamber B is closed, the second check valve by the rod-shaped valve body 14 is opened to open the upper end outlet of the liquid chamber B, and the air chamber A is pressurized by the lowering of the piston body 6. Thus, in the third check valve by the elastic valve body 16, the intake hole F is kept closed, and the inlet of the air passage D is opened.

  Therefore, when the consumer starts using the nozzle body 4 for the first time, the air is sent from the air chamber A to the mixing chamber C, and only the air accumulated from the liquid chamber B enters the mixing chamber C. Since air is fed, only air is discharged from the bubble passage G of the nozzle body 4.

  When the first nozzle body 4 is released, the rod-like valve body 14 is first moved while the nozzle body 4 and the piston body 6 are raised to the upper limit position as shown in FIG. After the second check valve is closed and the upper end outlet of the liquid chamber B is closed, the pressure in the liquid chamber B becomes negative due to the rising of the piston body 6, so that the first check valve by the ball valve 13 is The lower end inlet of the liquid chamber B is opened, and the air chamber A becomes negative pressure due to the rise of the piston body 6, so that the intake hole F is opened in the third check valve by the elastic valve body 16. The inlet of the air passage D is closed.

  As a result, the liquid in the container body 2 is sucked into the liquid chamber B through the liquid introduction pipe 15, and external air passes through the ventilation path H between the inner cylinder portion 41 and the outer cylinder portion 42 and is sucked into the liquid chamber B. By supplying the air chamber A from the hole F, the foaming preparation state is completed.

  In addition, since the volume of the head space of the container main body 2 is increased by the amount of liquid sucked from the container main body 2 into the liquid chamber B, the head space is in a negative pressure state as it is. 1 until the state of FIG. 1 returns to the state shown in FIG. 1, the air hole E remains open, and the external air that has passed through the air passage H between the inner cylinder part 41 and the outer cylinder part 42 immediately passes through the air hole E. Since it is sucked into the container main body 2, such a negative pressure state in the head space is immediately eliminated.

  When the liquid is filled in the liquid chamber B as described above and the nozzle body 4 is pushed down again when the state returns to the state shown in FIG. 1, the piston body 6 and the check valves (first to third check valves) The check valve operates in the same manner as in the above-described push-down operation. As a result, the air chamber A and the liquid chamber B are pressurized as the piston body 6 is lowered, so that the air in the air chamber A is Air is pumped into the mixing chamber C through the air passage D, and the liquid in the liquid chamber B is fed into the mixing chamber C. Both are mixed and bubbled in the mixing chamber C, and then the bubbles in the nozzle body 4 are mixed. It is discharged from the discharge port 43 of the nozzle body 4 through the passage G.

  Then, when the push-down operation of the nozzle body 4 is released from the state shown in FIG. 2, the piston body 6 and each check valve (first to third check valves) are the same as when the push-down operation is released. As a result, the liquid in the container body 2 is again sucked into the liquid chamber B through the liquid introduction pipe 15 and air is supplied from the intake hole F to the air chamber A, thereby preparing for foaming. Thereafter, a desired amount of bubbles can be discharged from the discharge port 43 of the nozzle body 4 by repeating the operation of depressing the nozzle body 4 and releasing the operation.

  By the way, in the pump-type discharge container of the present embodiment as described above, in order to supply air into the container through the air passage H between the inner cylinder part 41 and the outer cylinder part 42, intake air for sucking in external air. An opening 45 is formed in the nozzle body 4.

  That is, as shown in FIGS. 4A and 4B, a space portion 44 that is closed by the lid body 40 is formed at the top of the nozzle body 4, and a part of the space portion 44 is an outer cylinder. The concave portion 44a protrudes outward from the outer peripheral surface of the portion 42, and an intake port 45 for sucking outside air is opened in the outer wall of the concave portion 44a. In addition, a communication hole 46 is formed in the space 44 so as to communicate with the ventilation path H between the inner cylinder 41 and the outer cylinder 42 on the inner side of the recess 44a. In the present embodiment, the recess 44 a is formed in a groove shape extending in the circumferential direction along the outer peripheral surface of the outer cylindrical portion 42, but partially protrudes at a part of the outer peripheral surface of the outer cylindrical portion 42. May be formed.

  Further, the outer edge of the top of the nozzle body 4 is used as a waterproof wall for preventing water from entering the air inlet 45 from above or from the side with respect to the air inlet 45 opened in the nozzle body 4 as described above. A skirt-shaped cover portion 47 is provided so as to hang downward from the portion, and this cover portion 47 is spaced outward from the outer wall of the recess 44 a and extends below the intake port 45. ing.

  In this embodiment, the air inlet 45 opened in the outer wall of the recess 44a is formed so as to cut out the outer wall from the bottom corner of the recess 44a, and FIG. 3 and FIG. 4 (A). , (B), the cylindrical portion of the nozzle body 4 (the inner cylindrical portion 41 and the outer cylindrical portion) is connected to the communication hole 46 that communicates the air passage h between the inner cylindrical portion 41 and the outer cylindrical portion 42. 42) is arranged at a position shifted in the circumferential direction.

  According to the pump type discharge container 1 of the present embodiment in which the intake port 45 is formed as described above, the nozzle body 4 is not formed from the gap between the outer cylinder portion 42 of the nozzle body 4 and the guide stem portion 33 of the cap 3. By sucking outside air from the air inlet 45 opened in the air, a large amount of outside air can be quickly introduced into the container, and a large amount of bubbles of contents can be quickly discharged. The skirt-like cover 47 can prevent water from entering the air inlet 45 from the side.

  Further, since the intake port 45 is opened on the outer wall of the recess 44a that protrudes outward from the outer peripheral surface of the outer cylindrical portion 42 of the nozzle body 4, for example, the container is laid down or the container is slanted. Even if water adhering to the outer peripheral surface of the outer cylinder portion 42 flows toward the intake port 45 by being tilted downward, the bottom wall 48 of the recess 44a functions as a dike, and the intake port 45 Since water is prevented from entering the water, it is possible to effectively prevent water from entering the container from the air inlet 45.

  In the present embodiment, the air inlet 45 is formed so as to cut out the outer wall from the bottom corner of the recess 44a. By doing so, when the nozzle body 4 is formed by the upper and lower molds. In addition, the air inlet 45 can be easily formed by a mold. On the other hand, the structure shown in the patent literature cited above as a cited example, that is, the outer cylinder part (“skirt-shaped cover 25” in the cited example) of the nozzle body has an intake port (“outside air intake port in the cited example”). 32 ") cannot be formed by molding with upper and lower molds, and the inner cylinder portion (in the cited example," The hollow pipe 22 ") and the cover portion (" defensive wall 33 "in the cited example) are obstructive, making the processing extremely difficult, and substantially making the production (mass production as a product) difficult. .

  Further, in this embodiment, the air inlet 45 is shifted from the communication hole 46 that communicates the space portion 44 with the air passage H, but by doing so, water should be supplied from the air inlet 45 by any chance. Even if it has entered, there is little possibility that it will immediately enter the air passage H between the inner cylinder part 41 and the outer cylinder part 42 from the communication hole 46, and the water accumulated in the recess 44a Therefore, it is possible to more reliably prevent water from entering the container.

  As mentioned above, although one Example of the pump type discharge container of this invention was described, this invention is not limited only to the specific structure as shown in the said Example, For example, said Example Then, as shown in FIGS. 4A and 4B, the intake port 45 and the communication hole 46 are arranged at positions shifted in the circumferential direction of the cylindrical portion of the nozzle body 4, but FIG. ), (B), the air inlet 45 and the communication hole 46 may be arranged on the same radial direction of the cylindrical portion of the nozzle body 4.

  Further, in the above embodiment, as shown in FIGS. 4A and 4B, the lid 40 that closes the space 44 at the top of the nozzle body 4 has the lower end of the skirt portion as far as the intake port 45. The skirt portion is extended downward with the same length on the entire circumference so as not to reach, but in order to firmly fix the lid body 40 to the nozzle body 4, it is shown in FIGS. 5 (A) and 5 (B). As described above, the skirt portion of the lid body 40 may be extended to the vicinity of the lower end of the peripheral wall of the space portion 44 over the entire circumference, and in that case, a part of the skirt portion is notched at the portion of the intake port 45. Just do it.

  Furthermore, the pump-type discharge container of the present invention is not limited to the foam discharge container in which air is mixed into the liquid of the contents as shown in the above embodiment to form a foam, and only the liquid of the contents is discharged. The specific structure of the pump mechanism is not limited to the specific structure of the foam discharge container shown in the above embodiment, It goes without saying that the design can be changed as appropriate, for example, by adopting other appropriate structures known in the art.

In one embodiment of the pump-type discharge container of the present invention, the entire structure of the container with the nozzle body at the upper limit position (the horizontal line connecting the ends in the cylindrical part is partially omitted without displaying it) FIG. 1 is a longitudinal cross-sectional view showing the overall structure of the container in which the nozzle body of the pump-type discharge container shown in FIG. 1 is at the lower limit position (a part of the horizontal line connecting the ends of the cylindrical portion is partially omitted as in FIG. Figure. The top view which shows the state which looked at the pump type discharge container shown in FIG. 1 from upper direction. FIG. 4A is a longitudinal sectional view taken along line AA in FIG. 3 and FIG. 3B is a longitudinal sectional view taken along line BB in FIG. 3 with respect to the nozzle body of the pump type discharge container shown in FIG. 3A is a longitudinal sectional view taken along line AA in FIG. 3, and FIG. 3B is a longitudinal section taken along line BB in FIG. Plan view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pump type discharge container 2 Container main body 3 Cap 4 Nozzle body 5 Cylinder body 6 Piston body 31 Guide stem part 40 Cover body 41 Inner cylinder part 42 Outer cylinder part 44 Space part 44a Recess 45 Inlet port 46 Communication hole 47 Cover part

Claims (3)

A piston body is arranged on the inside of a cylinder body suspended from the mouth of the container so as to move up and down by a predetermined range while being always biased upward, and the container covers the piston body from above. The cap that is attached to the mouth of the tube has a cylindrical guide stem portion standing upward from the periphery of the opening formed in the center of the top plate, and is disposed outside the container and has a discharge port. The nozzle body is integrally formed with an inner cylinder portion that is connected to the piston body to form a discharge passage, and an outer cylinder portion that moves up and down along the outer peripheral surface of the guide stem portion. In the pump-type discharge container that is a ventilation path for introducing outside air into the container between the outer cylinder parts,
A space portion that is closed by a lid is formed at the top of the nozzle body, and a part of the space portion is formed in a recess protruding outward from the outer peripheral surface of the outer cylinder portion. An intake port for sucking in the outside air is opened, and the space inside the recess is communicated with the air passage between the inner cylinder part and the outer cylinder part, and hangs downward from the outer edge part of the top part of the nozzle body. A pump-type discharge container, wherein the skirt-shaped cover portion is formed so as to extend outward from the recess and further downward than the intake port.   2. The pump-type discharge container according to claim 1, wherein the intake port opened in the outer wall of the recess is formed so as to cut out the outer wall from the bottom corner of the recess.   The inlet port that opens in the outer wall of the recess is connected to the communication hole that communicates the space at the top of the nozzle body and the air passage between the inner cylinder part and the outer cylinder part. The pump-type discharge container according to claim 1 or 2, wherein the pump-type discharge container is disposed at a position shifted in a circumferential direction.

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