JP2022116457A - Lever cover for trigger type liquid jet device - Google Patents

Abstract

To provide a lever cover for a trigger type liquid jet device which can disinfect/sterilize viruses and germs attached to an operation lever.SOLUTION: A lever cover for a trigger type liquid jet device A having a pump 10 for compression-feeding content liquid stored in a container body 2 toward a nozzle 30 provided with a jet orifice 35, and an operation lever 51 for driving the pump 10 has: a fitting part 61 covering at least a front face of the operation lever 51; and a guide part 63 which extends to a front position of the jet orifice 35 from the fitting part 61, and guides a part of the content liquid jetted from the jet orifice 35 toward a finger hook surface 62 of the fitting part 61.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a lever cover for a trigger-type liquid ejector that operates a pump by operating an operation lever to eject liquid contained in a container from a nozzle.

The ejector main body attached to the mouth of the container includes a pump that delivers liquid, an operation lever that operates the pump, a delivery channel that pumps the liquid to the pump, and a delivery port that is the outlet end of the delivery channel. Triggered liquid ejectors are known that include a nozzle provided with the nozzle. The nozzle has an ejection hole inside a cylindrical outer wall having a triangular or square cross-sectional shape. and erupt. Further, the nozzle is configured to be able to switch the opening/closing state of the ejection hole, for example, by rotating the outer peripheral wall.
In such a trigger-type liquid ejector, when the operation lever is operated with a fingertip, the pump is operated, and the liquid is pressure-fed from the container body to the nozzle, and is ejected from the ejection hole in the form of mist, foam, direct injection, or the like. is possible (see, for example, Patent Document 1)

JP 2017-213495 A

In recent years, as a preventive measure against infectious diseases such as influenza and the new coronavirus, trigger-type liquid sprays containing liquid disinfectants and disinfectants such as alcohol and ethanol have been installed at store entrances, etc., and users themselves Disinfection and sterilization are performed by operating the operation lever and spraying the disinfectant and disinfectant onto the fingers.

However, since such a trigger-type liquid ejector is used by an unspecified number of people, there is a risk of spreading infection if viruses or bacteria adhere to the control lever itself. was there.

SUMMARY OF THE INVENTION An object of the present invention is to create a lever cover for a trigger-type liquid ejector that can disinfect and eliminate viruses and bacteria adhering to the operating lever in order to solve the above-described problems in the prior art.

Among the means for solving the above problems, the main means of the present invention are
A lever cover for a trigger-type liquid ejector having a pump for pressure-feeding a content liquid contained in a container body toward a nozzle provided with an ejection hole, and an operation lever for driving the pump,
A fitting part that fits at least the operation lever and covers the front surface, and a part of the content liquid that is extended from the fitting part to a position in front of the ejection hole and ejected from the ejection hole is guided to the finger hook surface of the fitting part. It is characterized by having a guiding part that
In the main means of the present invention, every time the operating lever with the lever cover attached is operated, the ejected content liquid flows through the guide portion into the finger rest surface, which is the front surface of the lever cover, so that the finger rest surface is disinfected or removed. can be fungus.

Another means of the present invention is that the main means of the present invention includes a front wall to which part of the spouted content liquid adheres, and a flow of the content liquid adhering to the front wall toward the fitting section. It has an inclined surface for dropping and a guide hole for passing the content liquid from the inclined surface to the finger hook surface of the fitting portion.
With the above-described means, the content liquid can be reliably guided to the finger hook surface of the fitting portion.

According to another means of the present invention, in addition to any one of the above means, the upper end of the front wall is provided on the ejection path of the content liquid ejected from the ejection hole.
With the above means, part of the content liquid ejected from the ejection hole can be reliably adhered to the front wall.

According to another means of the present invention, in addition to any one of the above means, there is provided a residual means for causing the liquid content to remain on the finger hook surface.
With the above means, highly volatile content liquid can remain on the finger rest surface.

According to another means of the present invention, in addition to the above means, the residual means is constituted by arranging a plurality of laterally long protrusions or recesses in parallel on the finger resting surface at predetermined intervals. It is an addition.
Alternatively, a means is added in which the remaining means is configured by connecting and arranging a plurality of inclined projections or recesses on the finger hooking surface in a zigzag pattern.
In the above means, the content liquid that has passed through the guide hole and flowed out onto the finger hook surface can easily remain in the protrusions or recesses that constitute the remaining means, so that the finger hook surface can be wetted with the content liquid, that is, disinfected or sterilized. It can be held for a relatively long time.

In the present invention, when the operation lever to which the lever cover is attached is spouted, the content liquid is guided to the finger rest surface, which is the surface of the lever cover, so that the finger rest surface can be disinfected or sterilized.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view, partially in cross section, of a trigger-type liquid ejector having a lever cover according to one embodiment of the present invention; It is a front view which shows 1st Embodiment of a lever cover. (a) is a front view showing a second embodiment of a lever cover, and (b) is a front view showing a third embodiment of a lever cover.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a partial cross-section of a trigger-type liquid ejector having a lever cover as an embodiment of the present invention, and FIG. 2 is a front view showing a first embodiment of the lever cover.
First, the configuration of the trigger-type liquid ejector to which the lever cover is attached will be briefly described.
In this embodiment, the central axis of the container body 2 is defined as the central axis O1, the container body 2 side along the central axis O1 is referred to as the lower side, and the mounting cap 5 side opposite thereto is referred to as the upper side. A direction along the central axis O1 is referred to as the up-down direction or the vertical direction, and one direction perpendicular to the up-down direction and parallel to the paper surface is referred to as the front-rear direction. is called the left-right direction.

The trigger-type liquid ejector A shown in FIG. 1 is attached to the mouth 2a of a container 2 containing a liquid disinfectant or disinfectant such as alcohol or ethanol (hereinafter referred to as "content liquid"). It is used by being attached via a cap 5, and is made of a synthetic resin material.

The trigger-type liquid ejector A is formed with a pump 10 that sucks up the content liquid contained in the container body 2 and ejects it forward (to the left in the figure, the same applies hereinafter), and an ejection hole 35 that ejects the content liquid. A nozzle 30, an operation lever 51 constituting a trigger mechanism 50 for driving the pump 10, and a main body cover 40 covering an ejector main body (not shown) that mainly sends the content liquid sucked up by the pump 10 to the nozzle 30. configured as follows.

Although the detailed description of the ejector body is omitted, the action of the pump 10 sucks up the content liquid through the pipe 6 which is formed mainly along the vertical direction and which hangs down toward the inside of the container body 2. It is composed of a tubular portion (not shown), an injection tubular portion (not shown) extending horizontally from the suction tubular portion, and a guide member 20 which will be described later.
A delivery channel (not shown) for delivering the content liquid to the nozzle 30 is provided inside the injection cylinder.

The pump 10 includes a cylindrical cylinder 11 and a plunger 12 reciprocally movable within the cylinder 11 . In the ejector main body, when the pump 10 is driven and the inside of the cylinder 11 is pressurized, communication between the injection cylinder part and the suction cylinder part is established, and at the same time the communication between the suction cylinder part and the pipe 6 is blocked. . When the inside of the cylinder 11 is decompressed, communication between the injection cylinder portion and the suction cylinder portion is cut off, and at the same time, communication between the suction cylinder portion and the pipe 6 is established. Communication between the injection cylinder part and the siphoning cylinder part and its interruption, and communication between the siphoning cylinder part and the pipe and its interruption are performed by well-known check valves respectively provided.

A guide member 20 attached to the front end portion of the ejection cylinder (not shown) is provided at the front position of the main body cover 40 . The guide member 20 is integrally formed with a mounting cylinder portion 22 and a guide shaft portion 23 coaxially extending forward from a guide partition (not shown) arranged opposite to the front end portion of the ejection cylinder portion. A tubular annular space 24 is provided in which the shaft portion 23 and the attached tubular portion 22 face each other in the radial direction. In addition, the guide partition wall is integrally formed with a fitting cylinder portion (not shown) extending rearward and fitted into the injection cylinder portion, and between the delivery passage in the injection cylinder portion and the annular space 24. A communication hole (not shown) is provided to communicate with the .

The nozzle 30 has an outer peripheral wall 32 , and a partition wall 33 is provided inside the outer peripheral wall 32 . The outer peripheral wall 32 has a tubular shape with a substantially triangular cross section, and constitutes the outer shell of the nozzle 30 . The partition wall 33 is formed of a plate-like member that is perpendicular to the central axis O2 of the outer peripheral wall 32 and covers the opening end of the mounted tubular portion 22 . A cylindrical mounting tube 34 is integrally connected to the partition wall 33 . The mounting cylinder 34 covers the outer circumference of the mounting cylinder portion 22, and the convex portion provided on the inner circumferential surface of the mounting cylinder 34 is undercut-engaged with the annular groove provided on the outer circumferential surface of the mounting cylinder portion 22, whereby the nozzle is closed. Reference numeral 30 is rotatably attached to the attached cylindrical portion 22 .

The partition wall 33 is provided with a jet hole 35 penetrating along the central axis O2. The ejection hole 35 is formed with a small hole having a cross-sectional area smaller than that of the injection cylinder portion forming the delivery flow path, so that the content liquid pressure-fed into the injection cylinder portion can be ejected outward in the form of mist. It has become.

A closed tubular portion 36 coaxial with the ejection hole 35 and formed in a cylindrical shape is integrally provided on the inner surface of the partition wall 33 facing the side of the attached tubular portion 22 (right side in the figure), and the closed tubular portion 36 is attached. By slidably fitting to the inner peripheral surface of the cylindrical portion 22 , the open end of the attached cylindrical portion 22 is liquid-tightly closed by the partition wall 33 . Further, on the inner side surface of the partition wall 33, a switching cylinder part 37 is integrally provided with the closing cylinder part 36 and its central axis O2 aligned and located inside thereof. The switching cylinder portion 37 is slidably fitted on the outside of the guide shaft portion 23 . The closing tubular portion 36 and the switching tubular portion 37 are rotatable relative to the attached tubular portion 22 and the guide shaft portion 23, respectively.

A pair of connecting passages 23a extending in the direction along the central axis O2 are provided on the front side wall surface of the guide shaft portion 23 symmetrically about the central axis O2. On the other hand, on the inner peripheral surface of the switching cylinder portion 37, a pair of connection channels 37a extending in the direction along the central axis O2 from the tip thereof to a position overlapping the connection channel 23a of the guide shaft portion 23. They are provided symmetrically about the center. A spin groove (chamber) 27 is formed in the space where the partition wall 33 and the guide shaft portion 23 face each other.

When the nozzle 30 is at the open position shown in FIG. ) 27, thereby opening the nozzle 30 so that the ejection hole 35 is communicated with the delivery channel and the content liquid can be ejected.

On the other hand, although not shown in detail, when the nozzle 30 is rotated 120 degrees around the central axis O2 from the open position to the closed position, the connection flow path 23a of the guide shaft portion 23 and the connection flow path 37a of the switching cylinder portion 37 are separated. Displaced in the circumferential direction, the nozzle 30 is in a non-communicating state, and the nozzle 30 is in a closed state in which the ejection hole 35 is blocked from the delivery flow path and the content liquid cannot be ejected. In this way, by rotating the nozzle 30 to set it to the closed position or the open position, the opening/closing state of the ejection hole 35 can be switched.

Therefore, when the trigger type liquid ejector A is not used, the nozzle 30 is closed so that it can be stored in a state in which ejection of liquid due to an erroneous operation or the like is prevented.

The trigger mechanism 50 is formed with an operating lever 51 and a biasing member 52 that biases the operating lever 51 forward. The operating lever 51 is a substantially U-shaped member extending downward from the lower end of the main body cover 40 at a position near the lower end of the nozzle 30 .

The operating lever 51 is rotatably supported by the ejector body via a pivot (not shown), and is rotatably connected to the tip of the plunger 12 at its intermediate portion by a pin member 13 . Further, the operating lever 51 is engaged with a biasing member 52 whose one end is fixedly held by the ejector main body. 51 can be urged in the direction (clockwise direction in FIG. 1) to return to the initial state indicated by the solid line in FIG. The urging member 52 is composed of, for example, a leaf spring formed in a curved shape, but may have another configuration as long as it has the above-described function.

When the operation lever 51 is pulled rearward from the initial state indicated by the solid line with a finger to the jetting state indicated by the two-dot chain line, the plunger 12 is driven to pressurize the inside of the cylinder 11, and the operation lever 51 can pressurize the inside of the cylinder 11. When the finger is released, the urging member 52 returns, the operation lever 51 returns from the ejection state to the original initial state, and the inside of the cylinder 11 can be decompressed.

A detachable lever cover 60 is attached to the operating lever 51 . As shown in FIG. 2 , the lever cover 60 includes a fitting portion 61 fitted to the operation lever 51 , and a finger hook surface 62 that is a front surface of the fitting portion 61 to a position in front of the ejection hole 35 . and a guide portion 63 provided.

In this embodiment, the fitting portion 61 is a rectangular tubular member having an opening into which the operating lever 51 is inserted at the upper end and a closed lower end, and is detachably fitted to the outer surface of the operating lever 51 . Although shown as a configuration, at least the finger hooking surface 62 that covers the front surface of the operating lever 51 in a state of being fitted to the operating lever 51 may be provided.

The guiding portion 63 includes an inclined surface 64 formed obliquely upward from the upper position of the finger hooking surface 62, and a front wall 65 extending upward from the upper end of the inclined surface 64, and a pair of the guide portions arranged to face each other in the left-right direction. It is formed with a side wall 66 and a guide hole 67 formed at the proximal end of the inclined surface 64 and at the connecting portion with the finger hook surface 62 . As shown in FIG. 1, the upper end of the front wall 65 is positioned on the ejection path of the liquid content ejected from the ejection hole 35, that is, on the extension of the central axis O2 passing through the ejection hole 35. .

When the trigger-type liquid ejector A is used, the nozzle 30 is pinched and rotated from the closed position to the open position, and the ejection hole 35 communicates with the delivery flow path to open the state in which the content liquid can be ejected. set. Subsequently, while holding the trigger type liquid ejector A with one hand, the operator pulls the finger in contact with the finger hooking surface 62 backward to operate the operating lever 51 . Then, the operating lever 51 rotates from the initial state toward the ejection state, the plunger 12 moves, the pump 10 is driven, and the inside of the cylinder 11 is pressurized. As a result, the content liquid in the cylinder 11 is introduced into the siphoning cylinder portion, and the injection cylinder portion and the siphoning cylinder portion are opened and communicated by the action of a check valve (not shown), and the siphoning cylinder portion and the pipe are connected. 6 is shut off by closing the valve, the content liquid is pressure-fed and supplied from the suction tube into the ejection tube. As a result, the internal pressure of the injection cylinder portion rises, so that the liquid inside the injection cylinder portion is forced forward from the ejection hole 35 through the communication hole (not shown), the annular space 24, the connection flow path 37a, the connection flow path 23a, and the spin groove (chamber) 27. sprayed in the form of a mist.
At this time, as shown in FIG. 1, the lever cover 60 also rotates from the initial state to the ejection state together with the operation lever 51, and accordingly the guide portion 63 also transitions from the initial state indicated by the solid line to the ejection state indicated by the broken line. will do.
When the lever cover 60 is attached to the operation lever 51, the length of the operation lever 51 can be substantially extended downward by the length of the fitting portion 61, so that the operability of the operation lever 51 can be improved. It is possible.

Since the upper end of the front wall 65 of the lever cover 60 is positioned on the extension line of the central axis O2 passing through the ejection hole 35, most of the content liquid is sprayed forward from the ejection hole 35. However, part of the content liquid adheres to the inner surface of the front wall 65 . When the ejection operation of pulling the operating lever 51 is repeated several times, the content liquid flows out as droplets on the inner surface of the front wall 65 and flows downward from the front wall 65 on the inclined surface 64 .

In the ejection state in which the operating lever 51 is pulled, the inclined surface 64 is set in a substantially horizontal posture. For this reason, the content liquid that has flowed down on the inclined surface 64 can be temporarily accumulated in the holding space S surrounded by the inclined surface 64, the front wall 65 and the pair of side walls 66, and the accumulated content liquid can returns to its initial state, it passes through the guide hole 67 and flows down onto the finger hooking surface 62.例文帳に追加As a result, it is possible to wet the lever cover 60, especially the finger hooking surface 62, with the content liquid (alcohol, ethanol, etc.), so that the finger hooking surface 62 can be disinfected or sterilized. Therefore, even if an unspecified number of people use the trigger-type liquid ejector A, it is possible to suppress the spread of virus or bacteria infection.

Even when the nozzle 30 of the trigger type liquid ejector A is directed downward to eject the liquid, the content liquid is temporarily suspended in the holding space S surrounded by the inclined surface 64, the front wall 65 and the pair of side walls 66 in the same manner as described above. When the trigger type liquid ejector A is returned to its original upright position (see FIG. 1), the content liquid flows down onto the finger hook surface 62 .

By the way, in order to maintain the disinfected or sterilized state, it is necessary to keep the finger hook surface 62 wet with the content liquid for as long as possible. In the following, therefore, a means for retaining relatively highly volatile content liquid such as alcohol or ethanol on the finger rest surface 62 will be described.

FIG. 3(a) is a front view showing a second embodiment of the lever cover, and FIG. 3(b) is a front view showing a third embodiment of the lever cover.
In the second embodiment of the lever cover shown in FIG. 3(a), a plurality of horizontally elongated protrusions or recesses are arranged in parallel on the finger hooking surface 62 at predetermined intervals to form the residual means 70. As shown in FIG.
On the other hand, in the third embodiment of the lever cover shown in FIG. 3B, a plurality of inclined projections or recesses are arranged on the finger hooking surface 62 in a zigzag manner to form the residual means 70 .

In any of the above-described embodiments, the content liquid that has passed through the guide hole 67 and flowed out onto the finger hook surface 62 is likely to remain in the protrusions or recesses that constitute the remaining means 70 . Therefore, it is possible to maintain the state in which the finger hook surface 62 is wet with the content liquid, that is, the disinfected or sterilized state for a relatively long time.
Moreover, the remaining means 70 also functions as a non-slip by the protrusions or recesses. Therefore, it is possible to reliably perform the jetting operation by pulling the operating lever 51 backward.
In addition, since the lever cover 60 is detachable from the operating lever 51, the existing trigger type liquid ejector A can be used as it is.

As described above, the configuration and effects of the present invention have been described according to the embodiments, but the embodiments of the present invention are not limited to the above embodiments.

In the above embodiment, the lever cover 60 is attached to the operating lever 51 of the existing trigger-type liquid ejector A. However, the operating lever 51 itself is formed of a lever cover so as to have that function. may be

Further, in the above-described embodiment, the content liquid flows toward the lower end of the finger hooking surface 62 of the fitting portion 61 by passing through the guide hole 67 formed in the connecting portion between the proximal end of the inclined surface 64 and the finger hooking surface 62 . Although shown and described, the embodiment of the present invention is not limited to the above-described embodiment. A plate may be arranged so that the proximal end of the inclined surface 64 and the finger hooking surface 62 are connected only by the connecting plate. In this configuration, the content liquid flows from the inclined surface 64 through the connecting plate and reaches the fitting portion 61, but at the same time, it flows from the gaps on both sides of the connecting plate toward the finger hook surface 62. It is possible to disinfect or sterilize the finger hooking surface 62 with the content liquid.

Furthermore, in the above-described second and third embodiments of the lever cover, a structure in which a laterally long or slanted protrusion or recess is formed on the finger hook surface 62 as the remaining means 70 has been described. The configuration of is not limited to the above embodiment, and any combination of protrusions and recesses can be appropriately set as long as the configuration is such that the content liquid adhering to the finger hook surface 62 can be retained for a certain period of time. For example, a configuration in which convex portions or concave portions are alternately arranged, or a configuration in which crimped unevenness or the like may be employed.

Also, the trigger type liquid ejector A to which the lever cover 60 is attached is not limited to the above embodiment. That is, as long as the liquid is ejected from the ejection hole 35 of the nozzle 30 by pulling the operation lever 51, the pump and other internal configurations may be of any type.

INDUSTRIAL APPLICABILITY The present invention can expand applications in the field of trigger-type liquid ejectors.

2: Container body 2a: Mouth part 5: Mounting cap 6: Pipe 10: Pump 11: Cylinder 12: Plunger 13: Pin member 20: Guide member 22: Mounted tubular part 23: Guide shaft part 23a: Connection channel 24: Annular space 27: Spin groove (chamber)
30: Nozzle 32: Peripheral wall 33: Partition wall 34: Mounting cylinder 35: Ejection hole 36: Closing cylinder part 37: Switching cylinder part 37a: Connection channel 40: Body cover 50: Trigger mechanism 51: Operation lever 52: Biasing member 60: Lever cover 61: Fitting part 62: Finger hooking surface 63: Guidance part 64: Inclined surface 65: Front wall 66: Side wall 67: Guidance hole 70: Residual means A: Trigger type liquid ejector O1: Central axis O2: Center Axis S: holding space

Claims (6)

A pump (10) for pressure-feeding a content liquid contained in a container body (2) toward a nozzle (30) provided with an ejection hole (35), and an operation lever (51) for driving the pump (10). A lever cover (60) for a trigger-type liquid ejector (A), comprising:
a fitting portion (61) covering at least the front surface of the operating lever (51); and a guide portion (63) for guiding part of the content liquid to the finger hook surface (62) of the fitting portion (61). The guide part (63) has a front wall (65) to which part of the spouted content adheres, and an inclined surface ( 64) and a guide hole (67) for allowing the content liquid to pass from the inclined surface (64) to the finger hook surface (62) of the fitting portion (61). cover. 3. A lever cover for a trigger type liquid ejector according to claim 2, wherein the upper end of the front wall (65) is provided on the ejection path of the content liquid ejected from the ejection hole (35). A lever cover for a trigger-type liquid ejector according to any one of claims 1 to 3, wherein a retaining means (70) for retaining the content liquid is provided on the finger hook surface (62). 5. The lever for a trigger type liquid ejector according to claim 4, wherein the residual means (70) is constructed by arranging a plurality of laterally elongated protrusions or recesses in parallel on the finger hooking surface (62) at predetermined intervals. cover. 5. A lever cover for a trigger-type liquid ejector according to claim 4, wherein the residual means (70) is constructed by connecting a plurality of inclined protrusions or recesses on the finger-hooking surface (62) in a zigzag pattern.

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