JP5079305B2 - Liquid ejector - Google Patents

Description

  The present invention relates to a liquid discharger, and more particularly to a liquid discharger that prevents clogging of a discharge port of a nozzle.

2. Description of the Related Art Liquid discharge devices that are applied to bottles filled with contents such as shampoos, rinses, cosmetics, liquid soaps, detergents, laundry finishes, and the like are conventionally known.
Conventionally known liquid ejection devices leave the contents attached to the inner surface of the nozzle for a long time and the contents solidify, adhere to the inner surface of the ejection nozzle, narrow the nozzle hole, and cause defective ejection. It could cause clogging.
In order to eliminate such an inconvenience, there has been conventionally known one in which a nozzle cover having a cover plate for opening and closing the discharge port of the discharge nozzle is attached to the nozzle head (see Patent Document 1).
Japanese Utility Model Publication No. 6-34854

  However, the above-described conventional liquid discharge device is provided with a shaft portion (28) on a nozzle cover having a cover plate portion (27) for closing the nozzle hole, and the shaft portion (28) is provided on the discharge nozzle. The shaft is engaged with the groove (15) and the shaft end is inserted into the bearing holes (19) and (19). When the nozzle cover is attached, the shaft and the bearing hole need to be engaged. The nozzle cover and nozzle head could not be assembled easily and efficiently.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid discharger for preventing clogging, in which a nozzle cover can be easily attached to a nozzle head, in order to solve the above-described problems.

In order to solve the above-described problems, the present invention provides a liquid discharge apparatus including a nozzle head attached to a pump stem and a nozzle cover as a liquid discharger. The head base consists of a support piece with a shaft pin on the top wall , and a fitting cylinder that fits on the pump stem is suspended from the bottom. A cover base covering the base and a nozzle cover provided with a cover plate for opening and closing the discharge port of the discharge nozzle, and a lower end of an engaging part for holding the shaft pin of the support piece on the lower surface of the top wall of the cover base Provided with a bearing portion, formed separately from the nozzle cover, and a spring member for pushing the cover base of the nozzle cover upward is disposed at an equal interval between the annular support ring and the support ring in a spiral shape. Connect the extended spring and the top of the spring The presser ring is in contact with the back surface of the cover base in a free state, and the support ring has a connecting portion having a notch opened downward so as to straddle the flow path through which the discharge nozzle communicates. The part excluding the connecting part is mounted on the bottom of the recess of the support part formed by the flange continuously provided on the outer periphery of the fitting cylinder of the head base and the outer cylinder standing from the outer periphery of the flange. A configuration characterized by the above is adopted.

A support piece having a shaft pin is erected on the upper surface of the head base of the nozzle head, and a bearing portion for holding the shaft pin is provided on the lower surface of the top wall of the cover base, so that the top wall of the cover base is pushed down. As a result, the discharge port of the discharge nozzle can be opened and closed, and the pump can be pushed down to discharge the content liquid with a simple operation.
Further, by pressing the bearing portion against the shaft pin, the cover base can be easily attached from above, and the productivity can be improved.

  Since the spring member is an elastic body made of synthetic resin or a spring, a desired elastic force can be easily obtained, and the spring member is provided with a support portion on the head base, and between the head base and the cover base. It is easy to install because it is mounted on.

  Next, the liquid ejection apparatus of the present invention will be described with reference to the drawings, taking examples.

In FIG. 1, A is a container, B is an attachment cap, C is a pump attached to the container A via the attachment cap B, D is a nozzle head attached to the tip of the pump C, and E is a nozzle cover. .
The container A stores household items such as shampoo, cosmetics, liquid detergent, detergent, and laundry finish as contents.

As shown in FIGS. 1 and 2, the pump C is attached to the mouth tube portion 1 of the container A by a mounting cap B, and includes a cylinder 2 and a piston member 3.
A guide tube 4 is attached to the upper end of the cylinder 2 to guide the vertical movement of the piston member 3 and hold the nozzle head D at the lowest position. The stem 5 at the upper end of the piston member 3 is attached to the nozzle head. D is attached.

  As the pump C, a well-known pump may be used as long as it can suck the content liquid in the container A from the suction pipe 6 and discharge it from the stem 5 of the piston member 3, and the configuration is not particularly limited.

As shown in FIGS. 2 and 3, the nozzle head D includes a head substrate 10 and a discharge nozzle 11.
The head base 10 includes a top wall 12, a side peripheral wall 13, and a fitting cylinder 14 that is suspended from the central portion of the top wall 12, and is fitted to the stem 5. A flow path 15 is formed.
Discharge nozzles 11 are connected from a predetermined position on the side peripheral wall 13, and the tip of the discharge nozzle 11 is a discharge port 16.

  On the top surface of the top wall 12, a support hole 21 and a support recess 22 of a spring member 20 elastically mounted between the nozzle head D and the nozzle cover E are provided to form a support portion. A support piece 24 provided with a shaft pin 23 at its tip is erected on the end edge on the discharge nozzle 11 side.

The nozzle cover E includes a cover base 25 that covers the head base 10 and a nozzle lid portion 26 that covers the discharge nozzle 11, and swings about the shaft pin 23.
The cover base 25 includes a top wall 27 and a side peripheral wall 28, and a lower end 30 of the side peripheral wall 28 on the opposite side of the discharge nozzle 11 is formed so as not to contact the side peripheral wall 13 of the head base 10 when swinging. ing.

The nozzle lid portion 26 includes an upper wall 31, a side wall 32, and a lid plate 33 that is suspended from the tip of the upper wall 31 and opens and closes the discharge port 16 of the discharge nozzle 11.
Between the top wall 27 and the upper wall 31 of the nozzle cover E, a bearing portion 35 having an engaging portion 34 at the lower end that holds the shaft pin 23 provided on the head base 10 is disposed.

  The spring member 20 is formed of a synthetic resin and includes an elastic body 36 having a U-shaped cross section and a leg portion 37. The elastic body 36 is placed in the support recess 22, and the leg portion 37 is fitted in the support hole 21. The cover base 25 is urged upward by the spring member 20.

Next, the function and effect of this liquid ejection apparatus will be described.
In use, when the top wall 27 of the nozzle cover E is pressed, the spring member 20 is compressed as shown in FIG.
As the top wall 27 is pressed, first, the nozzle lid portion 26 rotates around the shaft pin 23, and the lid plate 33 rises above the ejection port 16 of the ejection nozzle 11 to open the ejection port 16.

Subsequently, when the nozzle cover E is pushed down, the spring member 20 is further deformed, and the nozzle head D is pushed down together with the nozzle cover E.
In response to the depression of the nozzle head D, the pump C operates to discharge the contents from the discharge nozzle 11.
Therefore, the discharge of the contents starts after the discharge port 16 is opened.
When the nozzle cover E is released, the discharge is stopped, and the nozzle head D is raised by the bias of the spring in the pump C.

  When stopping the discharge of the contents, when the hand is released from the nozzle cover E, the nozzle cover E is pushed upward by the elastic force of the spring member 20, and the nozzle lid portion 26 pushes the shaft pin 23 of the support piece 24. Rotating as the center, the cover plate 33 is lowered and the discharge port 16 is closed.

Therefore, after discharge, the liquid in the discharge nozzle 11 does not cause dripping, and the cover plate 33 can prevent air from entering, so that the content is solidified and adheres to the inner surface of the discharge nozzle 11. And there is no such thing as clogging.
And since the nozzle cover E covers the whole nozzle head D, it is suitable for use in a bathroom with a shower or the like.
Further, since the nozzle cover E is merely swung, the operation is simple and reliable.

Further, since the support piece 24 provided with the shaft pin 23 is erected on the top wall 12 of the head base 10 and the bearing portion 35 provided on the nozzle cover E is inserted and inserted, the nozzle cover E can be easily mounted. became.
In addition, since the support portion for the spring member 20 is provided on the top wall 12 of the head base 10, the spring mounting of the spring member 20 can be performed very easily and reliably.

Next, a second embodiment will be described.
In the present embodiment, the shape of the spring member is changed. Hereinafter, the same components are denoted by the same reference numerals, and different points will be mainly described.

In FIG. 5, D is a nozzle head, E is a nozzle cover, and 40 is a spring member elastically mounted between the nozzle head D and the nozzle cover E.
The spring member 40 is formed of a synthetic resin, and a leg portion 42 is provided on an elastic body 41 having an elliptical cross section. The leg portion 42 is attached to the support hole 21 drilled in the top wall 12 of the nozzle head D and is elastic. The body 41 itself is placed in the support recess 22.

  In the present embodiment, since the spring member 40 is formed by the elastic body 41 having an oval cross section, the effect of stabilizing the elastic force is obtained, and the other effects are the same as those of the previous embodiment. Can do.

Next, a third embodiment will be described.
In the present embodiment, the shape of the spring member and the nozzle head that supports the spring member is changed.

In FIG. 6, Da is a nozzle head, E is a nozzle cover, and 50 is a spring member.
The nozzle head Da includes a top wall 51 and a fitting cylinder 52 that is suspended from the edge of the top wall 51 and is fitted to the stem 5 of the pump C. 53 is continuously provided, and an outer cylinder 54 extending up to the height of the top wall 51 is erected on the outer peripheral edge of the flange 53.
A discharge nozzle 55 is provided continuously from the upper end of the fitting cylinder 52, extends outward through the outer cylinder 54, and a support portion for the spring member 50 is formed by the flange 53 and the outer cylinder 54.

The spring member 50 includes a support ring 56, a plurality of springs 57, and a pressing ring 58, and a portion corresponding to the discharge nozzle 55 of the support ring 56 is a notch 59. A striking connecting portion 60 is provided.
The springs 57 are equidistant and extend spirally from the upper surface of the support ring 56 so as not to interfere with the discharge nozzle 55, and the upper ends thereof are connected to the pressing ring 58.

  In this embodiment, since the springs 57 are arranged at equal intervals, it is possible to equalize the application of elastic force, and the other effects can be obtained in the same manner as in the above embodiments.

  In the above embodiment, the flange and the outer cylinder are used as the support portion of the spring member. However, the top wall of the nozzle head is extended to the outer cylinder and the support portion of the spring member is formed on the top surface of the top wall in the same manner as in the above embodiments. You may do it.

  In the present invention, the cover base and the nozzle lid are connected via the hinge mechanism, and the bearing provided on the lower surface of the upper wall of the nozzle cover is engaged with the shaft pin of the support piece standing on the head base. Since the nozzle cover is rotated so that the cover plate at the tip of the nozzle cover part is rotated from the discharge port of the discharge nozzle, the operability is excellent and it can be widely used as a viscous liquid discharge container.

1 is a sectional elevation view of a liquid ejector according to a first embodiment of the present invention. It is explanatory drawing of the nozzle head which covered the nozzle cover, (a) is a top view, (b) is a cross-sectional elevation view, (c) is a bottom view. It is a top view of a nozzle head. It is a cross-sectional elevation view when the nozzle head is pressed down. It is explanatory drawing of the nozzle head which covered the nozzle cover of 2nd Example, (a) is sectional elevation, (b) is sectional elevation at the time of pushing down of a nozzle head. It is explanatory drawing of the nozzle head which covered the nozzle cover of 3rd Example, (a) is sectional elevation, (b) is a perspective view of a spring member, (c) is sectional elevation at the time of pressing down of a nozzle head FIG.

Explanation of symbols

A Container B Mounting cap C Pump D, Da Nozzle head E Nozzle cover 1 Mouth tube part 2 Cylinder 3 Piston member 4 Guide cylinder 5 Stem 6 Suction pipe 10 Head base 11, 55 Discharge nozzle 12, 27, 51 Top wall 13, 28 Side peripheral wall 14, 52 Fitting cylinder 15 Flow path 16 Discharge port 20, 40, 50 Spring member 21 Support hole 22 Support recess 23 Shaft pin 24 Support piece 25 Cover base 26 Nozzle cover part 31 Upper wall 32 Side wall 33 Cover plate 34 Engagement part 35 Bearing part 36, 41 Elastic body 37, 42 Leg part 53 Flange 54 Outer cylinder 56 Support ring 57 Spring 58 Holding ring 59 Notch part 60 Connection part

Claims (1)

A liquid ejection device comprising a nozzle head attached to a pump stem and a nozzle cover,
The nozzle head consists of a head base and a discharge nozzle.
The head base is provided with a support piece provided with a shaft pin on the top surface of the top wall, and a fitting cylinder that is fitted on the stem of the pump is suspended at the bottom .
The nozzle cover is composed of a cover base that covers the head base and a nozzle cover that includes a cover plate that opens and closes the discharge port of the discharge nozzle.
Provided on the lower surface of the top wall of the cover base is a bearing portion having an engaging portion for holding the shaft pin of the support piece at the lower end;
A spring member that is formed separately from the nozzle cover and pushes up the cover base of the nozzle cover upward is disposed at equal intervals on the annular support ring, and connects the upper end of the spring with the spirally extending spring. Formed by an annular retaining ring,
The retaining ring is in free contact with the back surface of the cover base,
The support ring includes a connecting portion having a notch portion opened downward so as to straddle the flow path through which the discharge nozzle passes, and a portion excluding the connecting portion includes a flange continuously provided on the outer periphery of the fitting tube of the head base, A liquid ejector mounted on a bottom of a recess of a support portion formed by an outer cylinder erected from an outer peripheral edge of a flange .

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