Nozzle cover and pump type discharger with nozzle cover

Abstract

To provide a nozzle cover capable of effectively preventing an elastic piece that a pump type discharger comprises from being broken even if a container fitted with the pump type discharger is dropped by mistake.SOLUTION: A nozzle cover 13 is mounted detachably on a head 12 of a pump type discharger 100 such that content liquid in a container is discharged from a nozzle 12c by moving the head 12 down toward a cap, an elastic piece 10e elastically deforms, and the head 12 is moved up to the cap as the elastically deformed elastic piece 10e restores itself, wherein the nozzle cover has a wall part 13b covering at least the lower side of the nozzle 12c and a stopper part 13e interposed between the wall part 13b and cap.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a nozzle cover and a pump-type dispenser with a nozzle cover. [Background technology]

[0002] A known pump-type dispenser includes a cap that is attached to the mouth of a container, a pump that is held at the mouth by the cap and is driven by the up and down movement (back and forth movement) of a stem, and a head that is connected to the stem; the liquid contents in the container are dispensed from the discharge port of the head by moving the head toward the cap.

[0003] As shown in Patent Document 1, a coil spring is provided inside such a pump-type dispenser to return the head, which has been moved toward the cap, to its initial position. Although most of the components of such a pump-type dispenser are made of synthetic resin, the coil spring is made of metal, which poses a problem in that the dispenser cannot be recycled as a resin product in its current state when disposed of after use. Furthermore, in this type of pump-type dispenser, the components are firmly fixed to each other, for example, by fitting, to prevent them from coming apart during normal use. Therefore, it takes time and effort to disassemble the pump-type dispenser and separate the coil spring from the other components.

[0004] To address these problems, Patent Document 2 discloses a pump-type dispenser in which an elastic piece is provided on the cap or head instead of a coil spring. In the pump-type dispenser of Patent Document 2, the elastic piece elastically deforms when the head is lowered toward the cap, and the elastically deformed elastic piece returns to its original shape, allowing the head to be raised in the same way as in conventional dispensers. Furthermore, the pump-type dispenser of Patent Document 2 does not require separation of the coil spring when disposed of, and can be reused as a resin product as is, making it highly recyclable. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-31950 [Patent Document 2] Japanese Patent Application Laid-Open No. 2024-50382 Summary of the Invention [Problem to be solved by the invention]

[0006] Some types of pump dispensers have a nozzle extending radially outward as the portion of the head that dispenses the liquid content. When such a pump dispenser is attached to a container containing the liquid content and placed on a desk or the like, if the container is accidentally dropped from the desk or the like and the nozzle hits the floor or the like, the impact may cause the head to momentarily tilt, which may apply an impact load to the elastic piece and cause it to break.

[0007] In view of these points, the present invention aims to propose a nozzle cover that can effectively prevent damage to the elastic piece of a pump-type dispenser even if a container to which the pump-type dispenser is attached is accidentally dropped, and a pump-type dispenser with a nozzle cover that is equipped with this nozzle cover. [Means for solving the problem]

[0008] The nozzle cover of the present invention comprises a cap to be attached to the mouth of a container that contains liquid contents, a pump that is held at the mouth by the cap and is driven by the up and down movement of a stem, a head that has a nozzle that ejects the liquid contents to the outside and is connected to the stem, and an elastic piece provided on at least one of the cap and the head, and is removably attached to the head of a pump-type ejector that ejects the liquid contents from the container from the nozzle by lowering the head toward the cap, and elastically deforms the elastic piece, and then raises the head relative to the cap as the elastically deformed elastic piece returns to its original shape, and has a wall portion that covers at least the underside of the nozzle, and a stopper portion interposed between the wall portion and the cap. [Effects of the Invention]

[0009] According to the nozzle cover of the present invention, even if a container to which a pump-type dispenser is attached is accidentally dropped, damage to the elastic piece provided in the pump-type dispenser can be effectively prevented. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a cross-sectional side view showing a first embodiment of a pump-type dispenser with a nozzle cover according to the present invention. [Figure 2] FIG. 2 is a perspective view showing a nozzle cover according to the first embodiment. [Figure 3] FIG. 10 is a cross-sectional side view showing a second embodiment of a pump-type dispenser with a nozzle cover according to the present invention. [Figure 4] FIG. 10 is a perspective view showing a nozzle cover according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of a nozzle cover and a pump-type dispenser with a nozzle cover according to the present invention will be described with reference to the drawings. In this specification, the up-down direction refers to the direction along the illustrated central axis O (the central axis of the stem 7a, which will be described later), with the side where the pipe 4 is located being the "bottom" and the side where the head 12 is located being the "top." The radial direction refers to a direction perpendicular to the central axis O within a plane perpendicular to the central axis O, and the circumferential direction refers to a direction circumferential around the central axis O within this plane.

[0012] Fig. 1 is a diagram showing a pump type dispenser with a nozzle cover 101A which is a first embodiment of a pump type dispenser with a nozzle cover according to the present invention. The pump type dispenser with a nozzle cover 101A includes a pump type dispenser 100 and a nozzle cover 13. The pump type dispenser 100 of this embodiment is used by being attached to the mouth of a bottle-shaped container (not shown). The liquid content dispensed by the pump type dispenser 100 is, for example, a cosmetic product (such as a milky lotion or a lotion), shampoo, body soap, hand soap, or facial cleanser.

[0013] The pump-type dispenser 100 is composed of a cylinder 1, a valve member 2, a pipe 4, an internal member 5, a piston 6, a tubular member 7, a holder 8, a gasket 9, a cap body 10, a cap cover 11, and a head 12. The cylinder 1, the valve member 2, the internal member 5, the piston 6, the tubular member 7, and the holder 8 are components that constitute the "pump" in this specification, and the cap body 10 and the cap cover 11 are components that constitute the "cap" in this specification. Of the above components, the valve member 2, the piston 6, and the gasket 9 are made of a flexible synthetic resin (e.g., polyethylene (LDPE), HDPE, or foamed PE)), while the other components are made of a hard synthetic resin (e.g., polypropylene (PP), polybutylene terephthalate (PBT), polyacetal (POM), or polyketone (POK) resin). Each component of the pump-type dispenser 100 is essentially shaped around a central axis O.

[0014] Cylinder 1 has a disk-shaped bottom wall 1a with an upwardly protruding central portion, a cylindrical tube wall 1b rising from the outer edge of bottom wall 1a, and a flange wall 1c extending radially outward from the top of tube wall 1b. A through-hole (suction port 1d) is provided in the protruding central portion of bottom wall 1a. A cylindrical holding tube 1e is provided on the underside of bottom wall 1a, surrounding suction port 1d and extending downward to hold pipe 4. A through-hole (vent hole 1f) is provided in tube wall 1b.

[0015] The valve member 2 includes a base 2a, a valve body 2b that covers the suction port 1d inside the base 2a and sits on the upper surface of the bottom wall 1a, and an elastically deformable connecting piece 2c that connects the base 2a and the valve body 2b. The valve member 2 functions as a check valve, and when the pressure inside the cylinder 1 is reduced, the valve body 2b that had been closing the suction port 1d moves away from the bottom wall 1a, opening the suction port 1d.

[0016] In this embodiment, the base 2a is cylindrical with a lid and has an opening (not shown) through which the liquid passes after passing through the suction port 1d. The base 2a is fitted and held on the inner circumferential surface of the cylindrical wall 1b, thereby holding the valve member 2 within the cylinder 1.

[0017] The pipe 4 is hollow, and its upper end is inserted into the holding cylinder 1e and is fitted and held therein.

[0018] The internal member 5 is disposed inside the cylinder 1 and is a member that moves up and down relative to the cylinder 1. The internal member 5 includes a cylindrical connecting tube 5a and a bottom portion 5b that closes the lower end of the connecting tube 5a and extends radially outward. The connecting tube 5a is provided with a hole (communication port 5c) that passes through it, and the top surface of the bottom portion 5b is provided with an annular portion 5d that is located radially outward of the connecting portion with the connecting tube 5a.

[0019] The piston 6 is inserted into the connecting tube 5a and disposed inside the cylinder 1. The piston 6 in this embodiment has an annular base 6a. An outer sliding piece 6b extending upward and downward from the base 6a is provided on the outer edge of the base 6a. The outer sliding piece 6b slidably and liquid-tightly contacts the inner circumferential surface of the cylindrical wall portion 1b. An inner sliding piece 6c extending upward and downward from the base 6a is provided on the inner edge of the base 6a. A lower part of the inner sliding piece 6c liquid-tightly contacts the annular portion 5d, and an upper part of the inner sliding piece 6c slidably and liquid-tightly contacts the inner circumferential surface of an expanded diameter portion 7b (described later) of the cylindrical member 7.

[0020] The tubular member 7 is a member having an overall tubular shape. The tubular member 7 includes a cylindrical stem 7a and an expanded diameter portion 7b that is connected to the lower end of the stem 7a and has a larger diameter than the stem 7a. When the connecting tube 5a is inserted into the stem 7a, the two are fitted together, and the internal member 5 and the tubular member 7 move integrally relative to the cylinder 1.

[0021] The holder 8 has a portion located radially outward of the stem 7a and a portion located radially outward of the expanded diameter portion 7b, and is equipped with a holder base 8a that is fitted and held on the inner circumferential surface of the cylindrical wall portion 1b. A flange 8b extending radially outward is provided at the upper end of the holder base 8a. The holder 8 prevents the internal member 5, piston 6, and cylindrical member 7 from slipping out of the cylinder 1.

[0022] The packing 9 is in the shape of an annular plate and is inserted into and fitted into the cylindrical wall 1b of the cylinder 1. When the pump-type dispenser 100 is attached to a container (not shown), the packing 9 is sandwiched between the opening of the container and the flange wall 1c. This prevents problems such as the content liquid overflowing from the opening when the container is turned over, for example.

[0023] The cap body 10 has a disk-shaped top wall 10a with a central through-hole. A cylindrical peripheral wall 10b extends downward from the outer edge of the top wall 10a. The upper portion of the inner peripheral surface of the peripheral wall 10b bulges radially inward to fit and hold a flange wall 1c, thereby holding the cylinder 1 in the cap body 10. The inner peripheral surface of the cap body 10 is provided with a female threaded portion 10c that screws into a male threaded portion provided on the mouth of a container. The cap body 10 can be attached to a container by screwing the male threaded portion and the female threaded portion 10c together. Furthermore, the outer peripheral surface of the peripheral wall 10b is provided with anti-rotation recesses 10d extending vertically, as shown in the partially enlarged view of FIG. 1 . Multiple anti-rotation recesses 10d are provided at intervals circumferentially.

[0024] The cap body 10 also includes an elastic piece 10e that extends upward from the upper surface of the top wall 10a and is elastically deformable radially inward. In this embodiment, a plurality of elastic pieces 10e are provided at equal intervals in the circumferential direction. As will be described later, the elastic piece 10e is elastically deformed in a direction approaching the central axis O by the head 12 that is pressed when the contents are dispensed, and when the pressing force on the head 12 is released, the elastic piece 10e returns to its original position by its restoring force.

[0025] The elastic piece 10e includes a plate-shaped elastic piece main body 10f and a reinforcing rib 10g that is narrower than the elastic piece main body 10f (shorter in circumferential length than the elastic piece main body 10f). As shown in the figure, the reinforcing rib 10g is thick at its base (radial length) and thinner at its tip end. That is, the reinforcing rib 10g makes the elastic piece 10e of this embodiment more flexible at its tip end and less flexible at its base end.

[0026] Furthermore, as shown in FIG. 1, the top wall 10a is located radially outward of the elastic piece 10e and includes an annular outer annular wall 10h that protrudes upward from the top surface of the top wall 10a. In this embodiment, the outer annular wall 10h is located directly above the outer edge of the flange wall 1c, as shown in FIG. 1. The top wall 10a is also located radially inward of the elastic piece 10e and includes an annular inner first annular wall 10j that protrudes upward from the top surface of the top wall 10a. In this embodiment, the inner first annular wall 10j protrudes upward from the edge of a through hole provided in the center of the top wall 10a. The protrusion amount of the inner first annular wall 10j (the length from the top surface of the top wall 10a to the upper end surface of the inner first annular wall 10j) is approximately the same as the protrusion amount of the outer annular wall 10h. Furthermore, the top wall 10a is provided with a circular inner second annular wall 10k located radially where the inner first annular wall 10j is provided (located directly below the inner first annular wall 10j) and protruding downward from the underside of the top wall 10a.

[0027] The outer annular wall 10h, the first inner annular wall 10j, and the second inner annular wall 10k described above primarily function to prevent the inclination of the elastic piece 10e from changing when the pump-type dispenser 100 is attached to a container (not shown). Specifically, when the female threaded portion 10c is tightly fastened to the male threaded portion of the container, a strong force is applied to the top wall 10a from the upper end surface of the container's mouth via the packing 9 and the flange wall 1c. When the fastening is weak, the force applied to the top wall 10a becomes weaker. Therefore, the force applied to the top wall 10a varies depending on the degree to which the female threaded portion 10c is fastened to the male threaded portion, which changes the inclination of the elastic piece 10e. In contrast, in this embodiment, the outer annular wall 10h, the first inner annular wall 10j, and the second inner annular wall 10k are provided on the top wall 10a, making the top wall 10a less likely to deform, thereby suppressing the change in the inclination of the elastic piece 10e.

[0028] The cap cover 11 has a cylindrical cover peripheral wall 11a. The cover peripheral wall 11a surrounds the peripheral wall 10b and the elastic piece 10e. A retaining projection 11b protruding radially inward is provided at the lower end of the cover peripheral wall 11a and engaging with the lower end of the peripheral wall 10b. A vertically extending rib 11c is provided on the inner peripheral surface of the cover peripheral wall 11a. The lower portion of the rib 11c engages with a rotation-retaining recess 10d (see the partial enlarged view in FIG. 1), thereby preventing the cap cover 11 from rotating and being held by the cap body 10. The upper portion of the rib 11c protrudes radially inward more than the lower portion. The lower end surface of the upper portion contacts the upper surface of the top wall 10a, and the retaining projection 11b engages with the lower end of the peripheral wall 10b as described above, thereby preventing the cap cover 11 from being removed from the cap body 10. A ring-shaped cap flange 11d extending radially inward is provided at the upper end of the cover peripheral wall 11a.

[0029] The head 12 is cylindrical and includes a tubular portion 12a into which the stem 7a is inserted and fitted. A top portion 12b having a passage therein that leads to the tubular portion 12a is provided at the top of the tubular portion 12a. A cylindrical nozzle 12c is provided at the top portion 12b, extending radially outward and leading to a passage provided inside the top portion 12b. A discharge port 12d through which the content liquid is discharged by the pump-type dispenser 100 is provided at the tip of the nozzle 12c.

[0030] The head 12 also includes an extension 12e that extends downward from the top 12b and the nozzle 12c. In this embodiment, the extension 12e is cylindrical and centered on the central axis O. The lower portion of the extension 12e is inclined so that it widens radially outward as it extends downward, and the inner edge of this inclined portion contacts the outer peripheral surface of the elastic piece 10e (elastic piece main body 10f). Here, the portion of the extension 12e that contacts the elastic piece 10e is referred to as the contact portion 12f.

[0031] The nozzle cover 13 is detachably attached to the head 12. As shown in FIG. 2, the nozzle cover 13 is C-shaped and includes a mounting portion 13a that is held by the extension portion 12e as shown in FIG. 1. In this embodiment, the nozzle cover 13 is rectangular tubular as shown in FIGS. 1 and 2. The nozzle cover 13 includes a wall portion 13b that covers the lower, lateral, and upper sides of the nozzle 12c and connects to the side of the mounting portion 13a. A lid wall portion 13c that covers the discharge port 12d is provided at the tip of the wall portion 13b. The nozzle cover 13 also includes a plate-shaped stopper portion 13d that extends downward from the lower surface of the wall portion 13b at an angle approaching the central axis O and is interposed between the wall portion 13b and the cap flange portion 11d. In this embodiment, the stopper portion 13d contacts the upper surface of the cap flange portion 11d when the nozzle cover 13 is attached to the head 12. The stopper portion 13d may be such that, when the nozzle cover 13 is attached to the head 12, a slight gap is left between the stopper portion 13d and the upper surface of the cap flange portion 11d.

[0032] The stopper portion 13d has a lower wall portion 13e at its lower end, which extends outward in the thickness direction of the stopper portion 13d. In this embodiment, the lower wall portion 13e extends in an arc shape along the outer peripheral surface of the mounting portion 13a toward the outer side in the thickness direction of the stopper portion 13d. The end of the stopper portion 13d toward which the nozzle 12c is directed (the end of the stopper portion 13d opposite the end connected to the mounting portion 13a) has a plate-like connecting wall 13f, as shown in FIG. 2, which extends perpendicular to the stopper portion 13d and connects the lower surface of the wall portion 13b to the side surface of the lower wall portion 13e. As shown in FIG. 2, the side surface of the wall portion 13b has a finger hook portion 13g, which is composed of multiple protrusions extending vertically in this embodiment and serves as a finger hook when removing the nozzle cover 13 from the head 12.

[0033] In the nozzle cover-equipped pump-type dispenser 101A constructed using such components, before the head 12 is pressed, the contact portion 12f of the extension portion 12e contacts the elastic piece 10e. This causes the elastic piece 10e to bend slightly radially inward, resulting in the head 12 being moved to its uppermost position. As described above, the reinforcing rib 10g makes the elastic piece 10e of this embodiment more flexible at its tip end and less flexible at its base end. Generally, flexible elastic pieces can become worn and lose their resilience when constantly bent with a relatively large force. However, the elastic piece 10e of this embodiment is more flexible at its tip end and less flexible at its base end, thereby preventing the base end from becoming worn. Furthermore, before the head 12 is pressed when the head 12 is moved to its uppermost position, the force acting on the tip end of the elastic piece 10e is small, thereby mitigating the effects of wear on the tip end of the elastic piece 10e, which would otherwise remain bent as shown in FIG. 1.

[0034] Incidentally, when a container equipped with the nozzle cover-equipped pump-type dispenser 101A is placed on a desk or the like, even if a hand accidentally touches the container and the container falls with the nozzle 12c facing downward, the nozzle cover 13 of this embodiment has the wall portion 13b covering the nozzle 12c, thereby preventing the nozzle 12c from directly impacting the floor or the like. Furthermore, the stopper portion 13d provided on the nozzle cover 13 is interposed between the wall portion 13b and the cap cover 11, thereby preventing the wall portion 13b from moving toward the cap cover 11. That is, even if the impact of the fall causes the head 12 to move closer to the cap body 10 and the nozzle 12c to come into contact with the wall portion 13b, the nozzle 12c will not move any further. This prevents the head 12 from momentarily tilting due to the impact of the fall, thereby preventing damage to the elastic piece 10e. In this embodiment, a connecting wall 13f is provided extending perpendicular to the stopper portion 13d. This connecting wall 13f functions to reinforce the stopper portion 13d, thereby more effectively suppressing the movement of the wall portion 13b by the stopper portion 13d. Furthermore, in this embodiment, a lower wall portion 13e is provided at the lower end of the stopper portion 13d. This also suppresses the movement of the wall portion 13b toward the cap cover 11 by the lower wall portion 13e. This more reliably suppresses the momentary tilt of the head 12 caused by the impact when dropped, thereby more reliably preventing damage to the elastic piece 10e. Furthermore, since the cap cover 11 includes the cap flange portion 11d, the impact from the stopper portion 13d can be dispersed and absorbed over a wider area, more effectively suppressing the movement of the wall portion 13b by the stopper portion 13d.

[0035] To dispense the liquid from a container equipped with the nozzle cover-equipped pump-type dispenser 101A, the head 12 is pressed from above to lower the head 12. This causes the stem 7a to be pushed down along with the head 12. As the stem 7a is pushed down, the bottom 5b also descends via the connecting tube 5a, releasing the liquid-tight contact between the annular portion 5d and the lower portion of the inner sliding piece 6c. Further pushing down the head 12 causes the piston 6 to descend along with the tubular member 7 and internal member 5, pressurizing the interior of the cylinder 1. As a result, the liquid in the cylinder 1 passes through the communication port 5c, passes through the connecting tube 5a, the stem 7a, the tubular portion 12a, the passages provided inside the top 12b, and the inside of the nozzle 12c, and is then dispensed to the outside world through the discharge port 12d. When the head 12 is pressed down and the piston 6 descends below the vent port 1f, the container (not shown) is connected to the outside world via the vent port 1f. This prevents the pressure inside the container from becoming negative even if the liquid contained in the container decreases, preventing the container from being deformed or crushed.

[0036] Furthermore, when the head 12 is pressed down, the contact portion 12f of the extension portion 12e that contacts the elastic piece 10e applies a pressing force to the elastic piece 10e, causing the elastic piece 10e to bend radially inward.

[0037] Thereafter, when the pressure on head 12 is released, the elastic force of elastic piece 10e, which has been elastically deformed, acts on head 12, causing head 12 to begin to rise. As a result, annular portion 5d and the lower portion of inner sliding piece 6c once again come into liquid-tight contact, and piston 6 rises together with internal member 5, reducing the pressure inside cylinder 1. As a result, valve body portion 2b moves away from bottom wall portion 1a, opening suction port 1d and allowing the liquid content within the container to be sucked into cylinder 1 through pipe 4. If head 12 is then pressed, the liquid content will again be discharged from discharge port 12d.

[0038] Next, a description will be given of a second embodiment of the pump type dispenser with a nozzle cover 101B according to the present invention, and the nozzle cover 14, with reference to Figures 3 and 4. The pump type dispenser with a nozzle cover 101B is composed of the pump type dispenser 100 and the nozzle cover 14 described above.

[0039] Like the nozzle cover 13 of the first embodiment, the nozzle cover 14 is detachably attached to the head 12. The nozzle cover 14 includes an attachment portion 14a, a wall portion 14b, a lid wall portion 14c, and a stopper portion 14d, which have the same configurations as the attachment portion 13a, wall portion 13b, lid wall portion 13c, and stopper portion 13d described above.

[0040] A lower wall portion 14e is provided at the lower end of the stopper portion 14d, extending outward in the thickness direction of the stopper portion 14d. In this embodiment, the lower wall portion 14e extends outward in the thickness direction of the stopper portion 14d so as to have a rectangular shape in a bottom view, as shown in FIG. 4. A side wall portion 14h extending downward is provided at the outer edge of the lower wall portion 14e. When the nozzle cover 14 is attached to the head 12, as shown in FIG. 3, the side wall portion 14h extends along the outer peripheral surface of the cover peripheral wall 11a. As shown in FIG. 4, a plate-shaped connecting wall 14f is provided at the end of the stopper portion 14d on the side toward which the nozzle 12c is oriented (the end of the stopper portion 14d opposite the side connected to the mounting portion 14a). The connecting wall 14f extends perpendicular to the stopper portion 14d and is connected to the lower end of the side wall 14h.

[0041] Even in this nozzle-covered pump-type dispenser 101B, if a container to which it is attached is dropped with the nozzle 12c facing downward, the wall 14b covers the nozzle 12c, preventing the nozzle 12c from directly impacting the floor or other surface. Furthermore, the stopper 14d is interposed between the wall 14b and the cap cover 11, thereby preventing the wall 14b from moving toward the cap cover 11. Even if the nozzle 12c comes into contact with the wall 14b due to the impact of the drop, the nozzle 12c will not move any further. This prevents momentary tilt of the head 12 due to the impact of the drop, thereby preventing damage to the elastic piece 10e. Furthermore, the nozzle cover 14 of this embodiment includes a connecting wall 14f extending perpendicular to the stopper 14d. This connecting wall 14f functions as reinforcement for the stopper 14d, thereby more effectively suppressing the movement of the wall 14b. Since the movement of the wall portion 14b toward the cap cover 11 is also suppressed by the lower wall portion 14e provided at the lower end of the stopper portion 14d, the effect of suppressing the momentary tilt of the head 12 due to the impact when dropped is more reliably exhibited, and damage to the elastic piece 10e can be more reliably prevented. Furthermore, since the cap cover 11 is provided with the cap flange portion 11d, the impact from the stopper portion 14d can be dispersed and absorbed over a wider area, and the effect of the stopper portion 14d in suppressing the movement of the wall portion 14b due to the impact is more effectively exhibited.

[0042] Furthermore, the nozzle cover 14 of this embodiment has a side wall portion 14h that extends along the outer peripheral surface of the cover peripheral wall 11a when attached to the head 12. That is, when a container to which the pump type dispenser 101B with a nozzle cover is attached is dropped with the discharge port 12d facing downward and hits the floor or the like, the force applied to the nozzle cover 14 can be absorbed by the cap cover 11 via the side wall portion 14h. Therefore, even if the container is dropped in the above-mentioned position, the momentary tilt of the head 12 due to the impact at the time of dropping is suppressed, and damage to the elastic piece 10e can be prevented.

[0043] While one embodiment of the present invention has been described above with reference to Figures 1 to 4, this embodiment may be modified as follows: For example, the pump described above is merely an example, and cases in which other types of pumps are used are also included in the present invention.

[0044] In addition, in the above-described embodiment, the wall portions 13b and 14b provided on the nozzle covers 13 and 14 cover the lower, side, and upper sides of the nozzle 12c, but the wall portions 13b and 14b may cover only the lower side of the nozzle 12c, or may cover the lower and side sides of the nozzle 12c. The wall portions 13b and 14b do not necessarily cover the entire lower area of ​​the nozzle 12c, but may cover only a portion of the lower area of ​​the nozzle 12c. Furthermore, the side wall portion 14h of the nozzle cover 14 may be provided on the nozzle cover 13.

[0045] The number of elastic pieces 10e and their positions are not limited to those in the above-described embodiment and can be modified as appropriate. The reinforcing ribs 10g may be omitted depending on the shape and number of the elastic pieces 10e. While the elastic pieces 10e in the above-described embodiment bend toward the central axis O, they may also bend away from the central axis O. In the above-described embodiment, the elastic pieces 10e are provided on the cap body 10 and the extensions 12e are provided on the head 12. However, the extensions 12e may be provided on the cap body 10 and the elastic pieces 10e on the head 12. The elastic pieces 10e may also be provided on both the cap body 10 and the head 12.

[0046] (Addendum) In one aspect, the present specification discloses the following technology.

[0047] (Technology 1) a nozzle cover detachably attached to the head of a pump-type dispenser comprising: a cap attached to the mouth of a container that contains liquid contents; a pump that is held at the mouth by the cap and is driven by the up and down movement of a stem; a head having a nozzle that discharges the liquid contents to the outside and connected to the stem; and an elastic piece provided on at least one of the cap and the head, wherein the liquid contents in the container are discharged from the nozzle by lowering the head toward the cap, and the elastic piece is elastically deformed, and the elastically deformed elastic piece is restored to its original state, thereby raising the head relative to the cap; A nozzle cover has a wall portion that covers at least the lower side of the nozzle, and a stopper portion that is interposed between the wall portion and the cap.

[0048] This technology allows the stopper to prevent the wall from moving toward the cap. Therefore, if a container with a pump dispenser attached is accidentally dropped, even if the nozzle comes into contact with the wall due to the impact of the drop, the nozzle will not move any further. This prevents the head from momentarily tilting due to the impact of the drop, and therefore prevents damage to the elastic piece.

[0049] (Technology 2) The nozzle cover according to Art 1, wherein the stopper portion has a lower wall portion extending outward in a thickness direction of the stopper portion on a side facing the cap.

[0050] With this technique, the movement of the wall portion toward the cap is also suppressed by the lower wall portion, so that damage to the elastic piece can be more reliably prevented.

[0051] (Technology 3) The nozzle cover according to Art 1, wherein the stopper portion has a side wall portion extending along the side surface of the cap on the side facing the cap.

[0052] With this technology, if a container with a pump dispenser attached is accidentally dropped and hits the floor or other surface with the tip of the nozzle pointing downward, the force applied to the nozzle cover can be absorbed by the cap via the side wall. Therefore, even if the container is dropped in this position, the momentary tilt of the head caused by the impact at the time of dropping is suppressed, preventing damage to the elastic piece.

[0053] (Technology 4) A pump-type dispenser with a nozzle cover, which is composed of the pump-type dispenser and the nozzle cover described in any one of Techniques 1 to 3, the cap includes a cap body attached to the mouth portion, and a cap cover attached to the cap body and covering the periphery of the elastic piece, The cap cover has a cap flange portion extending toward the stem on the side facing the stopper portion.

[0054] This technology allows the impact from the stopper portion to be dispersed and absorbed by the cap flange portion, which has a larger area, thereby more effectively suppressing the movement of the wall portion when an impact is applied by the stopper portion.

[0055] Although one embodiment of the present invention has been described above, the present invention is not limited to this specific embodiment, and unless otherwise limited in the above description, various modifications and variations are possible within the spirit and scope of the present invention as defined in the claims. For example, the configurations of the above-described embodiment may be added or deleted as appropriate, and the configurations of one embodiment may be incorporated into other embodiments. Furthermore, the effects of the above-described embodiment are merely examples of the effects that can be obtained from the present invention. In other words, the effects of the present invention are not limited to the above-described effects, and additional effects may be obtained in addition to the above-described effects. [Explanation of symbols]

[0056] 7a:Stem 10: Cap body (cap) 10e: Elastic piece 11: Cap cover (cap) 11d: Cap flange part 12: Head 12c: Nozzle 13: Nozzle cover 13b: Wall part 13d: Stopper part 13e: Lower wall part 14: Nozzle cover 14b: Wall part 14d: Stopper part 14e: Lower wall part 14h: Side wall part 100: Pump type dispenser 101A, 101B: Pump-type dispenser with nozzle cover

Claims

1. a nozzle cover detachably attached to the head of a pump-type dispenser comprising: a cap attached to the mouth of a container that contains liquid contents; a pump that is held at the mouth by the cap and is driven by the up and down movement of a stem; a head having a nozzle that discharges the liquid contents to the outside and connected to the stem; and an elastic piece provided on at least one of the cap and the head, wherein the liquid contents in the container are discharged from the nozzle by lowering the head toward the cap, and the elastic piece is elastically deformed, and the elastically deformed elastic piece is restored to its original state, thereby raising the head relative to the cap; A nozzle cover has a wall portion that covers at least the lower side of the nozzle, and a stopper portion that is interposed between the wall portion and the cap.

2. The nozzle cover according to claim 1 , wherein the stopper portion has a lower wall portion extending outward in a thickness direction of the stopper portion on a side facing the cap.

3. The nozzle cover according to claim 1 , wherein the stopper portion has a side wall portion on a side facing the cap, the side wall portion extending along a side surface of the cap.

4. A pump-type dispenser with a nozzle cover, comprising the pump-type dispenser and the nozzle cover according to any one of claims 1 to 3, the cap includes a cap body attached to the mouth portion, and a cap cover attached to the cap body and covering the periphery of the elastic piece, The cap cover has a cap flange portion extending toward the stem on the side facing the stopper portion.

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