JP6087260B2 - Liquid ejector - Google Patents

Description

  The present invention prevents the pump from malfunctioning during distribution by screwing the push-down head provided with the nozzle down, and releases the screw-down of the push-down head when in use. The present invention relates to a liquid ejector that can be operated normally.

  Conventionally, as this kind of liquid ejector, what is described in patent document 1, for example is known. Such a conventional liquid ejector includes a fixed suction portion formed by fixing a cylinder in a state where the lower end is suspended in the container body by a mounting cylinder attached to the outer periphery of the mouth portion of the container body, and a center of the upper end of the fixed suction portion. And an operating member provided with a push-down head with a nozzle at the upper end of the stem that is protruded so as to be vertically movable in an upwardly biased state from the opening, so that the liquid in the container body is sucked up and ejected from the nozzle by the vertical movement of the operating member. In addition to being configured, it is configured to be able to be locked to the fixed suction portion in a state where the pressing head is pressed down.

  Further, in such a liquid ejector, the ring cap is in a state where the push-down head is pushed down by screwing the female screw portion provided in the push-down head and the male screw portion of the ring cap fixed to the upper end of the cylinder. The structure which latches to is known. FIG. 2 shows an example of a ring cap in such a liquid ejector, and a convex portion 120a that protrudes radially outward is provided below a male screw portion 18a provided on the outer peripheral surface of the ring cap 110. The convex portion 120a is disposed above the mounting cylinder 4 and holds the mounting cylinder 4 in place. A vertical gap G is formed between the convex portion 120 a and the upper surface of the top wall 11 of the mounting cylinder 4.

Japanese Patent No. 3657378

  When the convex part for retaining the mounting cylinder as described above is disposed above the top wall of the mounting cylinder, the height of the ring cap is increased by the height of the convex part. Further, the vertical gap formed between the convex portion and the top surface of the top wall is visible from the side of the container body when the liquid ejector is attached to the container body. There was a problem that.

  An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a liquid ejector having an improved appearance while reducing the height of the ring cap to reduce the size of the liquid ejector.

The present invention has been made to solve the above problems, and a liquid ejector according to the present invention includes a top wall having an opening in the center and a side wall depending from the outer peripheral edge of the top wall. A mounting cylinder mounted on the mouth;
A cylinder held in a state where the lower end is suspended inside the container body by the mounting cylinder;
A ring cap fixed to the upper end of the cylinder;
A stem that protrudes upward and downwardly in an upwardly biased state from an opening formed in the top wall of the mounting cylinder;
A pressing head fixed to the upper end of the stem,
The liquid in the container body is sucked up by the pressing and returning operation of the pressing head and can be poured out from the nozzle provided on the pressing head, and can be locked to the ring cap while the pressing head is pressed down. A liquid ejector comprising:
The mounting cylinder has a recess at the upper end of the inner peripheral edge of the top wall forming the opening,
The ring cap has a convex portion that protrudes radially outward from an outer peripheral surface of a fitting cylinder that is fitted to an upper end portion of the cylinder,
The convex portion enters into the concave portion and holds the mounting cylinder to prevent it from coming off.

  According to the liquid ejector of the present invention, the convex portion provided on the outer peripheral surface of the fitting cylinder enters the concave portion formed at the upper end of the inner peripheral edge of the top wall, and the mounting cylinder is prevented from coming off and held. Not only can the height of the cap be kept low, but the boundary between the mounting cylinder and the ring cap becomes difficult to visually recognize from the side surface side of the container body, and the appearance can be improved.

  Moreover, in the liquid ejector of the present invention, it is preferable that the height of the upper surface of the convex portion is equal to or less than the height of the upper surface of the top wall.

  According to the present invention, it is possible to reduce the height of the ring cap to reduce the size of the liquid ejector and to provide a liquid ejector with an improved appearance.

It is a half sectional view showing an important section of a container with a liquid ejector which attached a liquid ejector concerning one embodiment of the present invention to a container body, and made a pushing down head into the highest state. It is the elements on larger scale which represented the liquid ejector as a comparative example in the partial cross section.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the liquid ejector 1 according to the present embodiment holds the cylinder 5 in a state where the lower end is suspended in the container body 2 by the mounting cylinder 4 attached to the outer periphery of the mouth portion 3 of the container body 2. At the same time, a push-down head 9 with a nozzle 8 is provided at the upper end portion of the stem 7 which is protruded so as to be vertically movable from the opening 6 at the center of the upper end of the mounting cylinder 4. The liquid ejector 1 can suck up the liquid in the container body 2 by the pressing and returning operation of the push-down head 9 and can dispense it from the nozzle 8, and can be placed on the upper end of the cylinder 5 with the push-down head 9 pushed down. It is configured to be able to be locked to the fixed ring cap 10.

  The mounting cylinder 4 is composed of a top wall 11 having an opening 6 formed in the center and a side wall 12 depending from the outer peripheral edge of the top wall 11, and is formed at the upper end of the inner peripheral edge of the top wall 11 over the entire periphery. It has a stepped recess 11a. Further, a female screw portion 13 that is screwed into a male screw portion provided on the outer peripheral surface of the mouth portion 3 is provided on the inner peripheral surface of the side wall 12.

  The cylinder 5 has a cylindrical shape whose upper and lower ends are open, a flange 14 protruding radially outward is provided at the upper part of the outer peripheral surface, and an outside air introduction hole 5a is formed in a peripheral wall below the flange 14. . On the lower surface of the flange 14, a packing that comes into contact with the upper end of the mouth portion 3 is provided, and is in pressure contact with the top wall 11 of the mounting cylinder 4 and the upper end of the mouth portion 3. Further, the lower end portion of the cylinder 5 is reduced in diameter to be provided with a fitting cylinder portion 16, and the pipe 15 having the upper end fitted in the fitting cylinder portion 16 hangs down on the lower end portion in the container body 2. A suction valve 17 is provided at the lower end of the cylinder 5.

  The ring cap 10 non-rotatably fits the guide cylinder 18 penetrating the stem 7 to the inner periphery of the upper end of the cylinder 5 through the vertical ribs 19 for preventing rotation, and extends from the center in the vertical direction of the guide cylinder 18 to the outer peripheral side. A fitting cylinder 20 is provided vertically on the outer peripheral edge of the flange, and the inner circumference of the fitting cylinder 20 is fitted to the outer circumference of the upper end of the cylinder 5 through a concavo-convex engagement means so that it cannot be pulled out. In the present embodiment, the concave and convex engaging means is a protrusion 21 provided in two upper and lower stages on the outer peripheral surface of the upper end portion of the cylinder 5 and two upper and lower groove portions formed on the inner peripheral surface of the fitting cylinder 20 corresponding thereto. Composed. Further, the ring cap 10 has an annular convex portion 20 a that protrudes radially outward from the vicinity of the lower end portion of the outer peripheral surface of the fitting cylinder 20. The convex portion 20a enters the concave portion 11a and holds the mounting cylinder 4 so as not to come off. That is, the mounting cylinder 4 is restricted from moving in the vertical direction by the flange 14 of the cylinder 5 and the convex portion 20 a of the ring cap 10, and is mounted so as to be rotatable with respect to the cylinder 5. In the present embodiment, the upper surface of the convex portion 20a is on the same plane as the upper surface of the top wall 11 of the mounting cylinder 4, and the vertical thickness of the convex portion 20a is less than half the plate thickness of the top wall 11. ing.

  The push-down head 9 includes a vertical cylinder 23 that hangs down from the center of the top wall 22 and fits on the upper end of the stem 7, a cylindrical hanging wall 24 that hangs down from the top wall 22 on the outer peripheral side of the vertical cylinder 23, and the vertical cylinder 23. A nozzle 8 communicating with the nozzle. The push-down head 9 has an internal thread portion 25 provided on the inner peripheral surface of the hanging wall 24 with a predetermined gap from the boundary between the top wall 22 and the hanging wall 24.

  The stem 7 has an upper cylindrical portion 26 whose upper and lower ends are open, and a reduced diameter portion having a plurality of through holes 27 extending downward while being reduced in diameter from the lower end of the upper cylindrical portion 26 and spaced apart in the circumferential direction. 28 and a lower cylindrical portion 29 depending on the lower end of the reduced diameter portion 28. Moreover, the lower end of the upper cylinder part 26 has the guide cylinder wall part 30 suspended from the outer peripheral side through the skirt part extended in a taper shape.

  A piston member 31 is provided below the stem 7. Specifically, the piston member 31 includes a cylindrical seal tube 32 that is liquid-tightly and slidably contacted with the inner periphery of the guide tube wall portion 30 of the stem 7, and a lower end of the seal tube 32 from the lower end to the outer periphery side. It consists of a skirt-like piston 33 that is continuous with the outer peripheral edge of the extended flange and expands upward and downward, and an annular protrusion 34 that hangs down from the lower end of the seal cylinder 32. The piston 33 is slidably fitted to the cylinder 5.

  A piston guide 35 is fitted to the lower cylinder portion 29 of the stem 7. The piston guide 35 includes a top wall portion 37 having an annular fitting recess on the upper surface for fitting and locking the lower cylinder portion 29 of the stem 7, and an outer cylinder portion 38 provided vertically on the outer peripheral edge of the top wall portion 37. . A plurality of protrusions 39 for forming a gap between the outer periphery of the outer cylinder portion 38 and the inner periphery of the cylinder 5 are provided on the outer periphery of the upper end of the outer cylinder portion 38 with a gap in the circumferential direction. An annular contact recess that can contact the lower end of the annular protrusion 34 of the piston member 31 is provided on the top surface of the top wall portion 37.

  A coil spring 40 is disposed between the piston guide 35 and the suction valve 17. The upper end of the coil spring 40 is in contact with the lower surface of the top wall portion 37 on the inner peripheral side of the outer cylinder portion 38 and biases the stem 7 upward.

  A state in which the push-down head 9 is pushed down between the stem 7 and the ring cap 10, and the female screw portion 25 formed on the hanging wall 24 is screwed into the male screw portion 18 a formed on the upper outer periphery of the guide tube 18 of the ring cap 10. The closed cylinder member 41 that closes the outside air introduction hole 5a is provided. The closing cylinder member 41 is slidably fitted to the upper part of the cylinder 5 so as to close the outside air introduction hole 5a, and the sliding closing part 42 is arranged around the outer periphery of the lower part (lower end in this example). It consists of a base tube portion 43 that protrudes. The closing cylinder member 41 is pushed down by the downward step portion 44 provided in the vertical cylinder 23 of the push-down head 9 when the push-down head 9 shifts to the lowest lowered locking state, and closes the outside air introduction hole 5a.

  Here, FIG. 2 is an example of the ring cap 110 in the liquid ejector 101 shown for comparison, and the same components as those in the present embodiment are indicated by the same reference numerals. In the ring cap 110 of FIG. 2, since the convex portion 120a is disposed above the top wall 11 of the mounting cylinder 4 with a gap G, the height of the ring cap 110 cannot be kept low. Since it was visually recognized from the side surface side of the container body 2 to which the liquid ejector 101 was attached, the appearance was impaired.

  On the other hand, in the liquid ejector 1 of the present embodiment, the concave portion 11a is formed by the convex portion 20a provided in the ring cap 10 entering the concave portion 11a formed in the top wall 11 of the mounting cylinder 4. The height of the ring cap 10 can be kept low by the height of the convex portion 20a that enters. Further, since the gap formed at the boundary between the mounting cylinder 4 and the ring cap 10 is difficult to visually recognize from the side surface side of the container body, the appearance is improved.

  In addition, as for the liquid ejector 1 of this embodiment, it is desirable for the height of the upper surface of the convex part 20a to be below the height of the upper surface of the top wall 11, More preferably, the upper surface of the convex part 20a and the top wall It is preferable that the upper surface of 11 is located on the same plane. By doing in this way, the boundary of the mounting | wearing cylinder 4 and the ring cap 10 can be made not conspicuous, and an external appearance can be improved further.

  While the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the claims. For example, the content liquid is sucked up. The pump mechanism inside the cylinder may adopt another known structure. Moreover, although the convex part 20a was demonstrated as cyclic | annular form in the above-mentioned embodiment, the convex part 20a may be an intermittent thing parted in the circumferential direction.

DESCRIPTION OF SYMBOLS 1 Liquid ejector 2 Container body 3 Portion 4 Mounting cylinder 5 Cylinder 5a Outside air introduction hole 6 Opening 7 Stem 8 Nozzle 9 Depressing head 10 Ring cap 11 Top wall 11a Recessed part 12 Side wall 13 Female thread part 14 Flange 15 Pipe 16 Fitting cylinder part DESCRIPTION OF SYMBOLS 17 Suction valve 18 Guide cylinder 18a Male thread part 19 Vertical rib 20 Fitting cylinder 20a Convex part 21 Projection 22 Top wall 23 Vertical cylinder 24 Drooping wall 25 Female thread part 26 Upper cylinder part 27 Through hole 28 Reduced diameter part 29 Lower cylinder part 30 Guide cylinder wall part 31 Piston member 32 Seal cylinder 33 Piston 34 Annular projection 35 Piston guide 37 Top wall part 38 Outer cylinder part 39 Projection 40 Coil spring 41 Blocking cylinder member 42 Sliding closure part 43 Base cylinder part 44 Downward step part

Claims (2)

A top wall having an opening in the center, and a side wall depending from the outer peripheral edge of the top wall, and a mounting cylinder mounted on the mouth of the container body;
A cylinder held in a state where the lower end is suspended inside the container body by the mounting cylinder;
A ring cap fixed to the upper end of the cylinder;
A stem that protrudes upward and downwardly in an upwardly biased state from an opening formed in the top wall of the mounting cylinder;
A pressing head fixed to the upper end of the stem,
The liquid in the container body is sucked up by the pressing and returning operation of the pressing head and can be poured out from the nozzle provided on the pressing head, and can be locked to the ring cap while the pressing head is pressed down. A liquid ejector comprising:
The mounting cylinder has a recess at the upper end of the inner peripheral edge of the top wall forming the opening,
The ring cap has a convex portion that protrudes radially outward from an outer peripheral surface of a fitting cylinder that is fitted to an upper end portion of the cylinder,
The liquid ejector according to claim 1, wherein the convex portion enters the concave portion and holds the mounting cylinder in place. The liquid ejector according to claim 1, wherein a height of an upper surface of the convex portion is equal to or less than a height of an upper surface of the top wall.

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