Jetting apparatus

Abstract

To provide a jetting apparatus in which pressing from an upper portion is locked during non-use.SOLUTION: A jetting apparatus 10 is constituted by a cylindrical body part 11, a swinging piece 12 swingably provided in the body part 11, and a pressing piece 13 connected to the swinging piece 12. The swinging piece 12, with one end of a groove part 11b of the body part 11 as a base part 12a, extends to the other end side, and whose tip end part can swing in a vertical direction. The swinging piece 12 is provided with an opening / closing shaft part 12c, and the pressing piece 13 is pivotably supported with the opening / closing shaft part 12c as a center. By the rotation of the pressing piece 13, a stopper part 13c deviates from directly above a step part 11g, thereby a lock state of the swinging piece 12 is released, and the swinging piece 12 can swing in a vertical direction with the base part 12a as a reference point. When the tip end of a principal surface part 13a is pressed downward, the swinging piece 12 is pressed down with the base part as the reference point, and a stem part of a cylindrical container inserted at a lower end of a communicating cylindrical part 12d is pressed.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an injection device attached to a cylindrical container filled with a spraying material.

Background Art

[0002] Patent Document 1 discloses an aerosol device composed of an aerosol can, a cap, and an overcap. The container of the aerosol can is filled with an active ingredient and a propellant to be aerosolized.

[0003] The aerosol device of Patent Document 1 has a structure in which by pressing the button of the cap and engaging the locking portion provided on this button with the locking groove of the cap, the stem of the aerosol can is continuously pressed and the contents of the aerosol can are continuously sprayed.

[0004] Since the button of the cap part is in the groove, even if it is accidentally stepped on by a foot or the like, the contents of the aerosol can will not be sprayed. However, when something narrow falls on the button, there is a risk that the contents of the aerosol can will be sprayed inadvertently. Therefore, an overcap is provided to protect the cap and prevent the button from being accidentally pressed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, providing an overcap for the aerosol device leads to an increase in cost, and there is a problem that the volume of the aerosol device increases by the volume of the overcap, and the transportation cost also increases.

[0007] An object of the present invention is to provide an injection device that solves the above-described problems, locks the pressing from above when not in use, and eliminates the need for an overcap.

Means for Solving the Problems

[0008] The injection device according to the present invention for achieving the above object is an injection device attached to a cylindrical container that sprays a spraying material through a stem portion, and includes a groove portion sandwiched between a pair of wall portions, and a cylindrical main body portion whose bottom portion engages with the cylindrical container. A swing piece that extends to the other end side with one end of the groove portion as a base portion and whose tip portion can swing up and down, and a pressing piece that is connected to the swing piece so as to be openable and closable about an opening / closing shaft portion provided on the swing piece. A communication cylinder portion that abuts on and communicates with the stem portion is provided on the swing piece between the base portion and the opening / closing shaft portion. The pressing piece includes a planar main surface portion, an opening / closing portion that is continuous with the main surface portion and opens and closes around the opening / closing shaft portion, and a pair of stopper portions that extend in a direction perpendicular to the main surface portion from the opening / closing portion or near the opening / closing portion. In the closed state before the pressing piece is opened, when the main surface portion is in a horizontal state covering the communication cylinder portion, the stopper portion abuts on a stepped portion provided on the inner surface of the wall portion or the bottom portion of the groove portion, thereby making the swing piece non-swingable.

Effects of the Invention

[0009] According to the injection device of the present invention, by providing a locking mechanism that locks the pressing from above when not in use, it is possible to prevent accidental pressing of the stem portion of a cylindrical container such as an aerosol can. In addition, there is no need to provide an overcap as in a conventional aerosol device.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

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Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Mode for Carrying Out the Invention

[0011] The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is a perspective view of a cylindrical container and an injection device. The injection device 10 is attached to a cylindrical container E such as an aerosol can from above. This cylindrical container E is filled with a spraying material, for example, an insecticide, together with an injection component, and has a stem portion E1 at the center of the upper end, where the spraying material is ejected by pressing.

[0012] FIG. 2 is a plan view of the injection device 10 with the pressing piece closed, FIG. 3 is its front view, and FIG. 4 is its rear view. In FIGS. 2 to 4, the illustration of the recess provided in the wall portion described later is omitted.

[0013] FIG. 5 is a perspective view of the injection device with the pressing piece released from the closed state and the pressing piece partially released. FIG. 6 is a perspective view of the injection device with the released pressing piece in contact with the tip of the swinging piece. FIG. 7 is a front view thereof.

[0014] The injection device 10 is composed of a cylindrical main body 11, a swinging piece 12 swingably provided on the main body 11, and a pressing piece 13 connected to the swinging piece 12. Above the main body 11, there is a groove 11b sandwiched between a pair of wall portions 11a, and the bottom 11c can be fitted to the upper end of the cylindrical container E.

[0015] Inside the top surface 11d of the pair of wall portions 11a, notches 11e that engage with projections provided on the pressing piece 13 described later are respectively formed. On the outside of one of the top surfaces 11d, a recess 11f is formed. Documents with usage manuals printed thereon can be folded and inserted into this recess 11f, but this recess 11f is not necessarily required.

[0016] Also, on the inner surfaces of the pair of wall portions 11a, stepped portions 11g that contact stopper portions provided on the pressing piece 13 described later are respectively formed so as to face each other. When viewed from the side, the upper end of this stepped portion 11g is recessed in an arc shape along the tip of the stopper portion that bulges in an arc shape.

[0017] On the other end side of the groove 11b whose one end side is the base portion 12a of the swinging piece 12, a locked portion 11h for locking the locking piece of the swinging piece 12 described later is provided. This locked portion 11h has a shape that protrudes hook-like inward.

[0018] As shown in FIG. 6, the swinging piece 12 extends from one end of the groove 11b of the main body 11 with the base portion 12a as the other end side, that is, toward the locked portion 11h, and the tip portion 12b can swing up and down. And on this swinging piece 12, an opening / closing shaft portion 12c is provided with an axis perpendicular to the extending direction from the base portion 12a, and the pressing piece 13 is pivotally supported around this opening / closing shaft portion 12c.

[0019] Between the base portion 12a and the tip portion 12b of the swing piece 12, a communication cylinder portion 12d is provided, the lower end of which abuts against the stem portion E1 of the cylindrical container E and communicates to the upper end side. The upper end of this communication cylinder portion 12d is closed, and a pore 12e is formed at the center of this closed portion.

[0020] Also, a locking piece 12f is provided below the tip portion 12b, and this locking piece 12f is formed by standing three plate materials vertically along each other so as to be easily deformed. As shown in FIG. 1, each plate material is parallel and has an inverted triangular shape.

[0021] A pressing piece 13 that is connected to the swing piece 12 so as to be openable and closable about the opening and closing shaft portion 12c includes a planar main surface portion 13a, a pair of opening and closing portions 13b that are continuous with the main surface portion 13a and open and close about the opening and closing shaft portion 12c, and a pair of stopper portions 13c that are connected to these opening and closing portions 13b and extend in a direction perpendicular to the main surface portion 13a.

[0022] The opening and closing portions 13b and the stopper portions 13c that face each other across the main surface portion 13a are parallel, and a pair of protruding pieces 13d that protrude outward along the axial direction of the opening and closing shaft portion 12c are provided on the tip side of the main surface portion 13a.

[0023] The opening and closing shaft portion 12c has a shape in which a shaft body protrudes outward, but instead, a shaft hole may be adopted as the opening and closing shaft portion 12c. In such a case, the opening and closing portion 13b supported by the opening and closing shaft portion 12c will adopt a shaft body that protrudes inward instead of the shaft hole.

[0024] Furthermore, as the opening and closing shaft portion 12c, a hinge portion in which the folded side is at the same position as the axis can also be adopted. When a hinge portion is adopted as the opening and closing shaft portion 12c, the pair of stopper portions 13c will extend from the vicinity of the hinge portion in a direction perpendicular to the main surface portion 13a in the same manner as the stopper portion 13c shown in FIG. 3.

[0025] As shown in Fig. 1, in the horizontal state where the main surface portion 13a of the pressing piece 13 covers the upper end of the communication cylinder portion 12d, the state where the bottom portion 11c of the main body portion 11 of the injection device is fitted to the upper end of the cylindrical container E is the unused state before spraying of the cylindrical container E.

[0026] The surface of the closed main surface portion 13a and the top surface 11d of the wall portion 11a are flush. In the closed state of this pressing piece 13, the protruding piece 13d is engaged with the notch portion 11e. The protruding piece 13d obtains a click feeling while slightly expanding in the left - right direction and is engaged with the notch portion 11e. Therefore, when the main surface portion 13a is lifted upward, a slight resistance for the protruding piece 13d to expand in the left - right direction again will occur.

[0027] In the injection device 10 before spraying, the state shown in Fig. 1 is maintained unless the main surface portion 13a is lifted starting from the opening - closing portion 13b. In this state, since the communication cylinder portion 12d is protected by the main surface portion 13a of the pressing piece 13, it is possible to prevent the communication cylinder portion 12d from being blocked by dust or the like or being deformed by the impact of falling objects.

[0028] Fig. 8 is an explanatory diagram of the stopper portion 13c and the stepped portion 11g of the main body portion 11 in the state where the pressing piece 13 shown in Fig. 1 is closed, and Fig. 9 is an explanatory diagram of the stopper portion 13c and the stepped portion 11g in the state where the pressing piece 13 is opened halfway.

[0029] Also, Fig. 10 is an explanatory diagram of the stopper portion 13c and the stepped portion 11g in the state where the opened pressing piece 13 is in contact with the tip portion 12b of the swinging piece 12, and Fig. 11 is an explanatory diagram of the stopper portion 13c and the stepped portion 11g in the state where the main surface portion 13a is pressed down from the state of Fig. 10 and the locking piece 12f of the swinging piece 12 and the locked portion 11h of the main body portion 11 are locked.

[0030] As shown in FIG. 8, the stopper portion 13c that is in the vertical direction with respect to the main surface portion 13a in the horizontal state is located directly above the stepped portion 11g provided on the inner surface of the wall portion 11a. In this state, even if the swinging piece 12 is pressed, particularly the tip portion 12b of the swinging piece 12 that is exposed from the pressing piece 13, the stopper portion 13c abuts against the stepped portion 11g, so the swinging piece 12 does not swing up and down.

[0031] Furthermore, on the inner surface of the wall portion 11a, there is an upper stepped portion 11i on the base portion 12a side from the stepped portion 11g, and the upper end surface of this upper stepped portion 11i extends horizontally with the top surface 11d of the wall portion 11a. And when the main surface portion 13a is in the horizontal state, since the flange portions 13e on both sides of the main surface portion 13a are supported by the upper end surface of the upper stepped portion 11i, the locking mechanism can be made stronger.

[0032] When spraying the spraying material of the cylindrical container E, first, the main surface portion 13a of the pressing piece 13 is lifted upward starting from the opening / closing portion 13b. By lifting and rotating the main surface portion 13a, the stopper portion 13c that was directly above the stepped portion 11g rotates, and as shown in FIGS. 5 and 9, it separates from the stepped portion 11g and comes off from directly above the stepped portion 11g.

[0033] In this way, due to the rotation of the pressing piece 13, the stopper portion 13c comes off from directly above the stepped portion 11g, so the locked state of the swinging piece 12 is released, and the swinging piece 12 can swing up and down with the base portion 12a as the base point.

[0034] Subsequently, the lifted main surface portion 13a is further rotated so that the surface of the main surface portion 13a abuts against the tip portion 12b of the swinging piece 12 to reach the state shown in FIG. 10. As shown in the figure, by abutting the inverted main surface portion 13a against the tip portion 12b, the lever principle acts at the tip of the main surface portion 13a, and the tip of the main surface portion 13a can be pressed downward with a light pressing force by a finger.

[0035] When the tip of the main face portion 13a is pressed downward, the swing piece 12 is pushed down with the base portion 12a as a fulcrum, and the stem portion E1 inserted into the lower end of the communication cylinder portion 12d is pressed. In this way, when the stem portion E1 is pressed, the spraying material in the cylindrical container E is sprayed from the pores 12e at the tip through the communication cylinder portion 12d communicating with the stem portion E1.

[0036] Note that by adjusting the angle of the tip of the communication cylinder portion 12d, the spraying direction of the spraying material can be adjusted. For example, when the cylindrical container E is filled with a hair styling agent as a propellant together with a spraying component and the spraying direction is set to the horizontal direction, it can also be used as a hair spray.

[0037] In the state shown in FIG. 10, when the tip of the main face portion 13a is further pressed downward in the direction of the arrow shown in the figure, the plate material of the locking piece 12f, which is an inverted triangle, descends while gradually pushing and expanding the locked portion 11h, and finally the main face portion 13a can be pressed until the upper end of the locking piece 12f is caught by the locked portion 11h.

[0038] In this way, with the surface of the main face portion 13a in contact with the tip portion 12b of the swing piece 12, by further pressing down the main face portion 13a, the locking piece 12f and the locked portion 11h are locked to reach the state shown in FIG. 11, and the state where the communication cylinder portion 12d is pushed down is maintained.

[0039] FIG. 12 is an explanatory view of the stopper portion 13c and the stepped portion 11g of the main body portion 11 when the locking piece 12f of the swing piece 12 and the locked portion 11h of the main body portion 11 are locked and the tip of the main face portion 13a is pushed up and the pressing piece 13 is rotated halfway.

[0040] In the state shown in FIG. 11, when the tip of the main face portion 13a is pushed up with a predetermined force in the direction of the arrow shown in the figure, the pressing piece 13 rotates about the opening and closing shaft portion 12c, and the rear end portion 13f of the pressing piece 13, which is the side surface of the stopper portion 13c, comes into contact with the stepped portion 11g to reach the state shown in FIG. 12.

[0041] In the state shown in FIG. 12, when the tip of the main surface portion 13a is pulled up with a predetermined force in the direction of the arrow shown in the figure, the rear end portion 13f rides over the step portion 11g, and the locking state between the locking piece 12f and the locked portion 11h can be released. By the rear end portion 13f riding over the step portion 11g, the locking state can be easily released without applying a force, and the state shown in FIG. 10 can be restored.

[0042] In this way, by pushing up the pressing piece 13, it is possible to stop the continuous spraying from the cylindrical container E midway. By using this release function, for example, until half of the amount of the cylindrical container E is used, the injection device 10 can be used like a full-injection type injection device.

[0043] Also, in FIGS. 8 to 12, the locking and unlocking between the stopper portion 13c of the pressing piece 13 and the step portion 11g provided on the inner surface of the wall portion 11a have been described. However, without providing the step portion 11g, the stopper portion 13c may be extended, and the tip of the extended stopper portion 13c may be brought into contact with the bottom of the groove portion 11b. The extended stopper portion 13c and the bottom of the groove portion 11b will function in the same manner as the locking piece 12f and the locked portion 11h.

[0044] In this way, according to the injection device 10 according to the present invention, by providing a locking mechanism that locks the pressing from above when not in use, it is possible to prevent the stem portion E1 of the cylindrical container E such as an aerosol can from being inadvertently pressed. Also, unlike conventional aerosol devices, there is no need to provide an overcap.

Explanation of Reference Numerals

[0045] 10 Injection device 11 Main body portion 11a Wall portion 11b Groove portion 11c Bottom portion 11g Step portion 11h Locked portion 12 Swing piece 12a Base portion 12b Tip portion 12c Opening / closing shaft portion 12d Communication cylinder portion The 12f is a locking piece The 13 is a pressing piece The 13a is a main surface portion The 13b is an opening / closing portion The 13c is a stopper portion The E is a cylindrical container The E1 is a stem portion

Claims

1. An injection device attached to a cylindrical container for spraying a spraying material through a stem portion, comprising a cylindrical main body portion having a groove portion sandwiched between a pair of wall portions and a bottom portion engaging with the cylindrical container, a swing piece extending to the other end side with one end of the groove portion as a base portion and having a tip portion swingable up and down, and is composed of a pressing piece that is openably and closably connected to the swing piece about an opening and closing shaft portion provided on the swing piece, A communication cylinder portion that abuts against and communicates with the stem portion is provided on the swing piece between the base portion and the opening and closing shaft portion, The pressing piece is composed of a flat main surface portion, an opening and closing portion that is continuous with the main surface portion and opens and closes around the opening and closing shaft portion, and a pair of stopper portions that extend in a direction perpendicular to the main surface portion from the opening and closing portion or near the opening and closing portion, In the closed state before the pressing piece is opened, when the main surface portion is in a horizontal state covering the communication cylinder portion, the swing piece is made non-swingable by the stopper portion abutting against a stepped portion provided on the inner surface of the wall portion or the bottom portion of the groove portion. The injection device is characterized by this.

2. When the pressing piece is opened and the surface of the reversed main surface portion is brought into contact with the tip portion, the stopper portion is separated from the stepped portion or the bottom portion, and the swing piece can swing. The injection device according to claim 1, characterized by this.

3. A locking piece is provided below the tip portion, A locked portion capable of locking the locking piece is provided on the other end side of the groove portion whose one end side is the base portion of the swing piece, By pressing the main surface portion in a state where the surface of the main surface portion is in contact with the tip portion, the locking piece and the locked portion are engaged, and the state where the communication cylinder portion is pushed down is maintained. The injection device according to claim 2, characterized by this.

4. By pushing up the pressing piece with a predetermined force, the rear end portion of the pressing piece, which is the side surface of the stopper portion, rides over the stepped portion or the bottom portion, and the engagement state between the locking piece and the locked portion is released. The injection device according to claim 3, characterized in that.

5. The opening and closing shaft portion is a pair of shaft portions or shaft holes, and the opening and closing portion is a pair of shaft holes or shaft portions pivotally supported by the shaft portion or the shaft hole. The injection device according to any one of claims 1 to 4, characterized in that.

6. The opening and closing portion is a hinge body. The injection device according to any one of claims 1 to 4, characterized in that.

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