JP5268451B2 - Liquid ejector - Google Patents

Description

  The present invention relates to a liquid ejector, and more particularly to a liquid ejector in which a container body can be easily exchanged and the exchanged container body has excellent airtightness.

  Various liquid ejectors have been proposed in which a pump is attached to the upper end of the container body and the liquid in the container body is ejected by operating the pump. These liquid ejectors are generally disposed of with the pump after the liquid contained in the container has been used up, but have been changed to a form in which the liquid is refilled into the container in consideration of recent waste disposal circumstances. ing. In addition, a liquid ejector has been proposed in which only the container body can be replaced with a replacement container body after the stored liquid is used up in consideration of the characteristics, usage, and the like of the stored liquid (see, for example, Patent Document 1). ).

The liquid ejector of the above-mentioned Patent Document 1 is housed in a cylindrical case body and is detachably suspended, and includes a container body for liquid storage with a mouth and neck raised from the upper end of a thin body, A pair of side plates that are vertically suspended from both sides of the peripheral wall, and a case lid that is connected to both sides of the case main body so as to be vertically movable and rotatable, and the top wall of the lid is vertically penetrated and fixed. And a pump in which the part is suspended in a liquid-tight manner in the mouth-and-neck part, and is configured so that the container body can be exchanged by lifting the case lid and then rotating it.
JP 2002-224600 A

  Since the liquid ejector of the above-mentioned Patent Document 1 only needs to discard the container body having a thin body after the contained liquid is used up, the amount and volume of waste can be reduced as much as possible, and the container body can be replaced. In this case, it has an excellent characteristic that it can be performed by an extremely simple operation of lifting and rotating the case lid.

  In the present invention, the container body can be replaced by a very simple operation when the stored liquid in the container body is used up in the same manner as the conventional liquid ejector described above, and is suitable for dealing with a small-capacity container body. Yes, it is extremely convenient for frequent container replacement, for example, frequent replacement such as exhaustion each time, and a liquid ejector that does not cause liquid leakage even if such replacement is performed. suggest.

  The liquid ejector of the present invention includes a container body, a case body, and a pump.

  The container body is formed of a synthetic resin or the like, has a form in which a mouth and neck portion is erected at the upper end of the cylindrical body portion, stores the liquid therein, and is stored and mounted in the case body body portion from the lower end opening of the case body. It is constituted as follows. Further, since the container body is configured to be urged at least upward from below, it is necessary to have rigidity sufficient to withstand these pressing forces.

  The case body is provided with a self-supporting property formed of a synthetic resin or the like, and has a shape in which a cylindrical mouth portion is opened on a cylindrical trunk portion having a bottom lid that can be opened and closed. The bottom lid may be formed so as to be detachable with respect to the peripheral wall of the body part, and the lower end opening of the body part may be formed to be openable / closable, or may be formed to be openable / closable by being connected by a hinge or the like. In consideration of replacement, it is convenient to connect and connect via a hinge or the like. Moreover, it is good to provide the latching means at the time of closing. The locking means may be caused simply by the frictional force of the fitting portion, or may be locking means based on the engagement between the protrusion and the recess. Further, an upper biasing means for biasing the container body upward is provided on the bottom lid. As the upward biasing means, a coil spring or the like may be fixed, or a leaf spring may be integrally projected from the bottom lid as shown in the example of the drawing.

  Moreover, the case body has a cylinder for sealing suspended from the mouth part to the upper part in the body part. And the mouth-and-neck part of the container body biased upward by the upward biasing means is configured to be hermetically sealed by being pressed against the lower end of the sealing cylinder. There are various forms of the portion of the lower end portion of the sealing cylinder that presses against the container neck of the container body. For example, the elastic portion is configured as an elastic portion having elasticity with the lower end portion curved inward or outward. Is configured to be able to give high-precision airtightness by being pressed against the upper surface or the top corner of the mouth and neck. Alternatively, the lower end portion of the sealing cylinder is reduced or increased in diameter via a downward stepped portion, and a packing is interposed between the downward stepped portion and the upper surface of the container mouth / neck portion so that the small diameter portion or the large portion below the downward stepped portion is increased. You may comprise so that a diameter part may be fitted to an inner surface or an outer surface of a mouth neck part. Alternatively, an O-ring is embedded in the outer surface of the small-diameter portion or the inner surface of the large-diameter portion below the downward stepped portion, and the upper surface of the mouth and neck is brought into contact with the downward stepped portion, and the O-ring is pressed against the inner or outer surface of the mouth-and-neck portion. It may be sealed. In this case, you may use together with packing.

  In addition, a locking cylinder that fits the outer periphery of the container body neck at the outer periphery of the barrel part of the case body is installed vertically so that the container body can be attached to an appropriate position. You may do it. In this case, a locking projection is provided on the inner surface of the locking cylinder, and an annular projection is provided on the outer periphery of the container body neck so that the annular projection gets over the locking projection when the container is mounted. You may comprise so that a lower surface may be latched by the latching protrusion upper surface. At this time, it is possible to make the container neck of the container body easy to fit by using the lower surface of the locking projection as an inclined surface and a curved surface.

  The pump is fixed to the case body with a mounting cap fitted in a liquid-tight manner to the case body mouth, and the cylinder at the lower end is suspended from the upper part of the case body and can be pushed down from the cylinder in an upward biased state. The one provided with the ejection head at the upper end of the actuating member is used. As the internal mechanism of the pump, a conventionally known mechanism is used. In the case of the present invention, a structure in which a single ejection amount is larger than a general one is suitably employed because of its structure. For example, in a general hand spray, a single ejection amount is about 0.07 cc, but in the present invention, an ejection amount of around 0.6 cc can be preferably employed. However, it is of course not limited to this.

The first means is configured as follows. That is, a cylindrical mouth part 11 is opened on a cylindrical body part 10 provided with a bottom lid 15 that can be opened and closed, and a sealing cylinder 12 is suspended from the mouth part 11 in the upper part of the body part 10 for sealing. mounting the case body a as vertically the locking cylinder 13, the mounting cap C ₁ which locks the fitting engagement in a fluid-tight manner to the case body mouth 11 to the case body a between the cylinder peripheral wall 10a of the cylinder 12 outwards In addition, the cylinder C ₂ fixed to the mounting cap C ₁ is suspended in the mouth portion 11 and the pump C protruding from the upper end of the operating member C ₃ so as to be able to be pushed down from the cylinder C _{2 in an} upward biased state. The upper and lower biasing means provided on the bottom lid 15 is fitted into the barrel 10 by fitting the outer periphery of the neck portion 31 on the barrel 30 to the locking cylinder 13 from the lower end opening of the case body A. The upper surface of the body part 30 is urged upward with respect to the case body A by means of the above, and the container part B can be attached and detached by pressure-sealing the neck portion 31 on the body part 30 to the lower end of the sealing cylinder 12 by the upward urging. It was attached to.

The second means is configured as follows. That is, in the first means, an annular projection 32 is formed on the outer periphery of the container body neck portion 31, and the locking projection 14 with which the lower surface of the annular projection 32 gets over and engages the lower portion of the inner surface of the locking cylinder 13. Set up.

The third means was configured as follows. That is, at any means of said first means or the second means, the pump C has suspended the cylinder C ₂ to the container body opening neck 31 upper position.

The fourth means is configured as follows. That is, in any one of the first to third means, the lower end portion of the sealing cylinder 12 is bent inward to form an elastic portion 12a having elasticity, and the elastic portion 12a. Was pressed against the neck portion 31 of the container body and sealed.

The fifth means is configured as follows. That is, in any one of the first to third means, the diameter of the lower end portion of the sealing cylinder 12 is reduced through the downward step portion 25, and the lower surface of the downward step portion 25 is provided with the packing p via the packing p. The upper surface of the container body neck portion 31 was pressed and sealed.

The sixth means is configured as follows. That is, in any one of the first to third means, the lower end portion of the sealing cylinder 12 is reduced in diameter through the downward step portion 25, and the O-ring is formed on the outer surface of the reduced diameter portion 12b. o was buried and fixed, and the upper surface of the container body neck portion 31 was pressed against the lower surface of the downward step portion 25, and the inner surface of the container body neck portion 31 was pressed against the O-ring o and sealed.

  According to the present invention, the upper urging means for urging the container body B upward with respect to the case body A is provided, and the upper surface of the container body neck portion 31 is pressed against the lower end portion of the sealing cylinder 12 by the upper urging means. Since the upper end opening of the container body B is hermetically sealed, the sealing performance of the container body B is very good. Even if the container body B is repeatedly replaced or the liquid is refilled into the container body B, the container body B is always airtight. Seal is possible. Further, when the stored liquid is used up, the bottom lid 15 is opened and the container body is taken out, and a replacement container body is mounted, or an empty container body is filled with the liquid and then mounted again. Since replacement or refilling without removing is possible, quick response is possible. Further, since the pump C is not removed from the case body A, there is also an advantage that the sealing performance between the pump C and the case body A can be maintained with high accuracy over a long period of time.

  When the locking cylinder 13 with which the outer periphery of the container body neck portion 31 is fitted is suspended between the outer peripheral wall 10a on the outer side of the sealing cylinder 12, the mounted container body B is always supported at an appropriate position. There is an advantage of being.

  When the annular projection 32 is formed on the outer periphery of the container body neck portion 31 and the locking projection 14 that the lower surface of the annular projection 32 gets over and engages is projected at the lower part of the inner surface of the locking cylinder 13, the container body B is mounted. Sometimes, the container body can be once locked in a suspended state with the bottom lid 15 open, and the container body B can be more easily mounted.

It said pump C is, if you have drooping cylinder C ₂ to the container body opening neck 31 upper position may be used in the container body B as accommodating portion efficiently liquid, a small amount capacity of the container body B It is suitable for a case where the ejection amount of the pump C is large, and there is an advantage that the container body B can be formed as small as possible even when the container body B is frequently replaced.

  When the lower end of the sealing cylinder 12 is bent inward to form an elastic part 12a that is elastic, and the elastic part 12a is pressed against the container neck and neck part 31 and sealed, use packing or the like. Even if not, there is an advantage that a reliable sealing performance of the mouth and neck portion 31 can be secured.

  When the lower end of the sealing cylinder 12 is reduced in diameter via the downward step 25 and the upper surface of the container neck portion 31 is pressed against the lower surface of the downward step 25 via the packing p and sealed, the normal packing p Compared with the sealing performance of the above, since the pressing by the upward biasing force from the lower side is applied, more reliable sealing performance can be obtained.

  The lower end portion of the sealing cylinder 12 is reduced in diameter through the downward stepped portion 25, the O-ring o is embedded and fixed on the outer surface of the reduced diameter portion 12b, and the upper surface of the container neck portion 31 is pressed against the lower surface of the downward stepped portion 25 In addition, when the inner surface of the container neck portion 31 is pressed against the O-ring o and sealed, in addition to the sealing performance by the O-ring o, the sealing by close contact between the upper surface of the mouth neck portion 31 and the lower step portion 25 is performed. Adds the ability to obtain a more reliable seal.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show an example of the liquid ejector 1, and the liquid ejector 1 includes a case body A, a container body B, and a pump C.

  The case body A has a small-diameter cylindrical mouth portion 11 opened on a cylindrical trunk portion 10. The trunk portion 10 has a top wall 10b extending inward from the upper end edge of the peripheral wall 10a, and a cylindrical mouth portion 11 having a lower end opened at the center of the top wall 10b. Further, a sealing cylinder 12 is suspended from the lower end of the mouth 11 to the upper part of the body 10. The sealing cylinder 12 is formed in an elastic part 12a which is given elasticity by curving a lower end part inwardly. Further, a locking cylinder 13 longer than the sealing cylinder is suspended between the sealing cylinder 12 and the body peripheral wall 10a. A plurality of locking projections 14 in the circumferential direction are provided on the inner surface of the lower end portion of the locking cylinder 13.

  In addition, a bottom lid 15 is provided as a trunk bottom wall that closes and opens the lower end opening of the trunk 10. The bottom cover 15 is formed integrally with the body peripheral wall 10a via the hinge 16, and is provided at four circumferentially spaced intervals as upper biasing means around the window hole 18 drilled in the center of the bottom plate part 17. The leaf spring 19 is integrally projected. Each of the leaf springs 19 is configured in a band plate shape that curves inward after standing up from the edge of the window hole 18. In addition, a substantially annular engagement wall 20 with a part of the rear portion cut out is erected on the peripheral edge of the upper surface of the bottom plate portion 17, and is configured to be fitted to the lower end portion of the inner surface of the body peripheral wall 10a when the lid is closed. . An engaging projection 21 is provided so as to protrude from a part of the outer surface of the engaging wall 20 and engages with a locking hole 22 formed in the body peripheral wall 10a when the lid is closed. Further, a pair of inverted U-shaped notches 23 as shown in FIG. 2 are formed at the opposite lower ends of the barrel peripheral wall 10a, and are used when the container body B is replaced. Further, a finger hook portion 24 projects from the position of the bottom plate portion 17 facing the hinge 16.

  The container body B has a mouth-and-neck part 31 having a smaller diameter than the bottomed cylindrical body part 30, and an annular protrusion 32 protruding from the outer periphery of the mouth-and-neck part 31. It is configured to be stored and mounted from the lower end opening of the portion 10. In the mounted container body B, each leaf spring 19 pushes the bottom of the container body B upward, while the elastic portion 12a of the sealing cylinder 12 is pressed against the inner peripheral corner portion of the mouth-and-neck portion 31 and sealed. Further, the outer periphery of the annular protrusion 32 of the mouth / neck part 31 is fitted to the inner surface of the locking cylinder 13, and the locking protrusion 14 is engaged with the lower surface of the annular protrusion 32 to prevent the downward projection. The container B used in this example has a small capacity of about 10 cc.

The pump C includes a mounting cap C ₁ , a cylinder C ₂ , an operating member C _{3 and the} like. The mounting cap C ₁ has a peripheral wall portion 40 suspended from the back surface of the top plate 41 and a guide tube 42 erected from the top surface of the top plate 41. Further, the cylinder C ₂ is a cylindrical shape having an open upper and lower ends, is fitted between the cylindrical retaining portion 43 and the peripheral wall 10a of the flange 50 projecting from the vertically to the mounting cap top plate 41 back surface to the outer peripheral upper end portion It is fixed to the mounting cap C ₁ Te. The lower end of the cylinder C ₂ is vertically pipe fitting tube 51, are fitted to the upper end of the pipe 52 to the pipe fitting tube 51. Further, there is provided a suction valve 53 to the lower end inside the cylinder C _2. Actuating member C ₃ is a piston 60 which slides in the cylinder C ₂ to fitting the head 62 to the upper end of the stem 61 in tandem in a lower portion, and mounted so as to be pushed down by the upper energized state by the coil spring s A discharge valve 63 is provided in the upper part of the stem 61.

The pump C constructed as is attached to case body A screwed the peripheral wall 40 of the mounting cap C ₁ to the mouth portion 11 an outer periphery of the case body. At that time, the packing p fitted to the lower surface of the flange 50 of the cylinder C ₂ is pressed against the upper surface of the mouth portion 11 to achieve liquid tightness. Further, the cylinder C ₂ is substantially housed in the sealing cylinder 12 from the inside of the mouth portion 11, and the lower end portion projects from the upper part in the mouth neck portion 31 of the container body B, and the body portion of the container body B It is configured so as not to exist cylinder C ₂ is within 30. The suction pipe 52 hangs from its lower end to the lower end of the container body 30.

The liquid ejector 1 configured as described above is configured such that the pressurized liquid in the cylinder C ₂ is ejected from the ejection port of the head 62 by opening the discharge valve 63 by pushing down the operating member C ₃ . Further, when the actuating member C ₃ is raised, the discharge valve 63 is closed, the suction valve 53 is opened due to the negative pressure in the cylinder C ₂ , and the liquid in the container B is transferred into the cylinder C ₂ through the pipe 52. It is configured to suck up.

  When the liquid in the container body B is used up, the finger hooking portion 24 of the bottom plate portion 17 is grasped and the engaging projection 21 is forcibly removed from the locking hole 22 to open the bottom lid 15, and the container is removed from each notch 23. The container B can be easily taken out by grasping and pulling the lower end of the body trunk 30. Next, the replacement container body B is inserted from the lower end opening of the case body barrel portion 10 and pushed up to engage the annular protrusion 32 of the mouth / neck portion 31 with the engagement protrusion 14 of the engagement cylinder 13. Next, when the bottom lid 15 is closed and the engaging projection 21 is engaged with the locking hole 22, each leaf spring 19 pushes the bottom of the container body B upward, while the elastic part 12a is above the mouth and neck. Seal by pressing against the inner peripheral corner of 31.

  FIG. 3 shows another example, in which the lower end portion of the sealing cylinder 12 is provided with a small-diameter portion 12b having a reduced diameter via a downward step portion 25, and the container body mouth and neck are connected to the lower surface of the downward step portion 25 via a packing p. The upper surface of the part 31 is pressed. Other configurations are the same as those in the example of FIG.

  4 and 5 show still another example. The lower end portion of the sealing cylinder 12 is reduced in diameter through the downward stepped portion 25, and the O-ring o is embedded and fixed on the outer surface of the reduced diameter portion 12b. The upper surface of the container body neck portion 31 was pressed against the lower surface of the downward step portion 25, and the inner surface of the container body neck portion 31 was pressed against the O-ring o. In this case, packing may be interposed on the surface of the downward stepped portion 25.

It is a longitudinal cross-sectional view of a liquid ejector. Example 1 It is a principal part longitudinal cross-sectional view of the case body of a liquid ejector. Example 1 It is a longitudinal cross-sectional view of a liquid ejector. (Example 2) It is a longitudinal cross-sectional view of a liquid ejector. (Example 3) It is principal part expansion explanatory drawing of a liquid ejection. (Example 3)

Explanation of symbols

1 ... Liquid ejector A ... Case body
10 ... trunk part, 10a ... peripheral wall, 10b ... top wall, 11 ... mouth part, 12 ... sealing cylinder, 12a ... elastic part, 12b ... small diameter part, 13 ... locking cylinder, 14 ... locking projection, 15 ... bottom Lid, 16 ... Hinge, 17 ... Bottom plate, 18 ... Window hole, 19 ... Leaf spring, 20 ... Engagement wall, 21 ... Engagement projection, 22 ... Locking hole, 23 ... Notch,
24 ... Fingering part, 25 ... Down stepped part B ... Container body
30 ... trunk, 31 ... mouth and neck, 32 ... annular projection C ... pump
C ₁ … mounting cap
40 ... peripheral wall part, 41 ... top plate, 42 ... guide cylinder, 43 ... locking cylinder part
C ₂ ... Cylinder
50 ... Flange, 51 ... Pipe fitting cylinder, 52 ... Pipe, 53 ... Suction valve
C ₃ ... Actuating member
60 ... Piston, 61 ... Stem, 62 ... Head, 63 ... Discharge valve s ... Coil spring p ... Packing o ... O-ring

Claims (6)

Tubular body portion having an openable bottom lid (15) (10) a cylindrical mouth portion (11) opened on the torso from the neck portion (11) (10) in the upper part sealing tube (12) vertically and, sealing cylinder (12) the outer casing of the locking cylinder (13) and vertically between the barrel wall (10a) and (a), the case body mouth (11 liquid-tight as well as attached to the fitting and engaged with mounting cap (C ₁₎ by the case body (a) in the) vertical to the mounting cap (C ₁₎ fixed cylinder (C ₂₎ a mouth (11) was set, and the cylinder (C ₂₎ and a pump which projects the top end than capable actuating member depressed by the upper biasing state (C ₃₎ (C), from the case body (a) the lower end opening, the body portion ( 30) Fit the outer periphery of the upper neck and neck (31) to the locking cylinder (13) and place it in the barrel ( 10 ) , and the upper urging means provided on the bottom lid ( 15 ) Under part ( 30 ) The container body is configured such that the surface is urged upward with respect to the case body ( A ) , and the neck portion ( 31 ) on the trunk portion ( 30 ) is pressed against and sealed to the lower end portion of the sealing cylinder ( 12 ) by the upward urge. A liquid ejector characterized in that ( B ) is detachably mounted. An annular protrusion (32) is formed on the outer periphery of the container body neck and neck (31), and a locking protrusion (14) is formed on the lower surface of the inner surface of the locking cylinder (13). The liquid ejector according to claim 1. The pump (C) is connected to the cylinder (C ₂ The liquid ejector according to claim 1 or 2, which is suspended at a position above the container body neck and neck (31). The lower end of the sealing cylinder (12) is bent inward to form an elastic part (12a) which is elastic, and the elastic part (12a) is pressed against the container neck and neck (31) for sealing. The liquid ejector according to any one of claims 1 to 3. The lower end of the sealing cylinder (12) is reduced in diameter through the downward step (25), and the upper surface of the container neck and neck (31) is pressed against the lower surface of the downward step (25) via the packing (p). The liquid ejector according to any one of claims 1 to 3, wherein the liquid ejector is sealed. The lower end of the sealing cylinder (12) is reduced in diameter through the downward stepped portion (25), and the O-ring (o) is embedded and fixed on the outer surface of the reduced diameter portion (12b). The container body neck and neck (31) is pressed against the upper surface of the container body and the inner surface of the container body neck and neck (31) is sealed against the O-ring (o) and sealed. Liquid ejector.

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