JPH0572754U - Ejector - Google Patents

Abstract

(57) [Summary] [Purpose] For example, when carrying, prevent the possibility that the internal solution will flow into the stem and leak to the outside due to the ejector falling when the injection button is pressed and the stem is pushed into the cylinder and locked. . [Structure] An annular convex portion 10m is provided so as to project upward on the inner circumference of a step portion 10b of the cylinder 10. On the other hand, an annular recess 19n is provided at the lower end of the stem 18 by opening downward. Then, when the injection button 27 is pressed to further push the stem 18 into the cylinder 10 to lock it, the annular convex portion 10m is fitted into the annular concave portion 19n to cut off communication between the cylinder 10 and the stem 18.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an ejector for makeup, insecticide, sterilization, painting, etc.

[0002]

[Prior Art]

 Conventionally, in this type of ejector, for example, as shown in FIG. 4, when in use, the injection button 1 is pushed to the position indicated by the chain double-dashed line to push the stem 2 into the cylinder 3 to connect the seal valve 4 and the stem 2. A gap is formed, the contents in the cylinder 3 are put into the stem 2 from the outer periphery of the stem 2 through the gap, and are jetted from the jet port 1a through the stem 2, while the carrying button 1 is pushed while carrying. By pushing the stem 2 further into the cylinder 3 and screwing it into the cylinder to lock it as shown in FIG. 3, the overall shape of the ejector when carried is made smaller, and the injection button 1 is protected by an external impact when carried. There is a device that prevents the risk of being pressed and misfiring.

[0003]

[Problems to be solved by the device]

 However, in the conventional ejector of this type, when the injection button 1 is pushed down, as the system 2 descends the cylinder 3, the seal valve 4 elastically deforms due to the frictional force between them, as shown in FIG. Since a gap is created between the seal valve 4 and the stem 2 and the inside of the cylinder 3 and the inside of the stem 2 communicate with each other through the lateral hole 2a, when the stem 2 is locked and the ejector is carried with care, If it falls, the content liquid may flow into the stem 2 and leak to the outside.

Therefore, an object of the present invention is, for example, when carrying the device, when the injection button is pressed and the stem is pushed into the cylinder and locked when the ejector falls, the internal solution may flow into the stem and leak to the outside. Is to prevent.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, for example, as shown in the following illustrated embodiment, at the time of use, the injection button 27 is pushed to push the stem 18 into the cylinder 10, and a gap is provided between the seal valve 17 in the cylinder 10 and the stem 18. That is, the content in the cylinder 10 is introduced from the outer periphery of the stem 18 into the stem 18 through the gap, and is injected from the injection port 27a through the stem 18, while the injection button 27 is pushed while carrying. In the ejector for further pushing the stem 18 into the cylinder 10 to lock the stem 18, an annular convex portion, for example, an annular convex portion 10m on the cylinder 10, is provided on either the lower end of the stem 18 or the inner surface of the cylinder 10. On the other hand, when the stem 18 is locked, the annular projection 10m is fitted into the annular recess, for example, the stem. 8, characterized by comprising forming an annular recess 19n to.

[0006]

[Action]

 According to this invention, when the injection button 27 is pushed to push the stem 18 into the cylinder 10 during use, a gap is created between the seal valve 17 in the cylinder 10 and the stem 18, and the inside of the cylinder 10 is closed. The contents are put into the stem 18 from the outer periphery of the stem 18 through the gap, and are jetted from the jet port 27a through the stem 18. On the other hand, when carrying, when the injection button 27 is pushed and the stem 18 is pushed further into the cylinder 10 and locked, the annular convex portion 10m is fitted in the annular concave portion 19n, and the communication between the cylinder 10 and the stem 18 is established. Cut off.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a cross-sectional view of a main part of the ejector according to the embodiment of the present invention when the ejector is not carried.

Reference numeral 10 in the figure denotes a vertically arranged cylinder. The cylinder 10 is provided with two step portions 10a and 10b in the middle thereof and has a diameter gradually decreasing downward. In the upper part of the cylinder 10, a lateral hole 10c penetrating in the radial direction is opened immediately above the first step portion 10a, and a flange 10d is provided on the outer periphery thereof, and a convex portion 10e is formed on the outer periphery of the upper end portion. Set up. On the other hand, inside the cylinder 10, a cylinder chamber 11 is formed, a valve seat 10f having a gradually decreasing diameter is provided at the bottom thereof, and an inner step portion 10g is provided above the valve seat 10f. A suction port 10h and a pipe mounting port 10i are continuously provided below. Then, the upper end of the suction pipe 12 is inserted into the pipe mounting port 10i, and the inside of the pipe is connected to the suction port 10h for connection.

A ball valve 15 is inserted into the cylinder 10 and placed on the valve seat 10f, and then a biasing member 16 is inserted so that its lower end portion is placed on the inner step portion 10g. After that, the stem 18 to which the seal valve 17 is attached is inserted into the cylinder 10.

The stem 18 includes a stem lower portion 19 and a stem upper portion 20. The stem lower portion 19 is composed of a shaft portion 19b having a shaft hole 19a at the center and an enlarged diameter portion 19c at the lower end thereof. On the outer periphery of the shaft portion 19b, a taper portion 19d having a diameter gradually increasing downward is formed immediately above the diameter expansion portion 19c, and a lateral hole 19e penetrating in the radial direction is formed in the upper middle thereof.

Further, the seal valve 17 is formed of an elastic member such as a rubber material into a short tubular shape having a substantially H-shaped cross section. An outer upper seal portion 17a and an outer lower seal portion 17b are provided on the outer circumference of the seal valve 17. An inner upper seal portion 17c and an inner lower seal portion 17d are provided on the inner circumference of the seal valve 17. The lower end of the central hole of the seal valve 17 is pressed against the tapered portion 19d of the stem lower portion 19 so as to be slidable.

On the other hand, the stem upper portion 20 has a shaft hole 20a, has a diameter-increasing portion 20b at a lower end portion, and forms a diameter-increasing concave portion 20c in the diameter-increasing portion 20b. Then, the upper end of the shaft portion 19b of the stem lower portion 19 is press-fitted into the lower end portion of the shaft hole 20a so that the shaft hole 20a of the system upper portion 20 and the shaft hole 19a of the stem lower portion 19 communicate with each other, and the diameter expansion concave portion The inner upper seal portion 17c of the seal valve 17 is pressed against the inside of 20c so as to be slidable.

The lower portion of the stem 18 is inserted into the cylinder 10 so that the lower surface of the enlarged diameter portion 19c is placed on the upper end of the urging member 16, and the outer upper seal portion 17a and the outer lower portion of the seal valve 17 are placed. The seal portion 17b is slidably provided by pressing against the inner surface of the cylinder 10, and the upper end portion of the stem upper portion 20 projects upward from the upper end of the cylinder 10.

On the other hand, the upper part of the cylinder 10 is inserted into the mounting member 23, the flange 10d is engaged with the inner surface of the top, and the upper end of the cylinder 10 is projected to the outside of the mounting member 23 through the center hole 23a. Set up. The mounting member 23 is formed in a cap shape having a downward U-shaped cross section, and is provided with an internal thread 23b on the inner circumference. A fixed cap 24 is attached to the upper end of the cylinder 10. The fixed cap 24 is formed by concentrically forming the outer tubular portion 24a and the inner tubular portion 24b in a concentric manner, providing an engaging protrusion 24c on the inner periphery of the outer tubular portion 24a, and at the upper inner periphery of the inner tubular portion. A female screw 24d is provided. Then, the inner cylinder portion 20b is press-fitted into the cylinder 10 so that the lower end abuts against the upper end of the outer upper seal portion 17a and the biasing member 16 is slightly compressed, and the outer cylinder is provided at the upper end portion of the cylinder 10. The portion 24a is covered, and the engaging protrusion 24c of the outer tubular portion 20a is provided so as to be hooked on the convex portion 10e of the cylinder 10, and the mounting member 23 is sandwiched between the outer tubular portion 24a and the flange 10d.

Then, the stem 18 is pushed up by the urging force of the urging member 16 to press the outer periphery of the taper portion 19d against the inner periphery below the center hole of the seal valve 17, and the enlarged diameter portion 19c. The upper surface is provided so as to be pressed against the inner lower seal portion 17d, and communication between the cylinder chamber 11 and the stem 18 is cut off.

Further, the upper end portion of the stem upper portion 20 is projected to the outside through the inner cylindrical portion 24b, and an injection button 27 is fitted on the upper end so that the injection port 27a and the inside of the stem 18 are communicated with each other. A male screw 27b is provided on the outer periphery of the lower end of the injection button 27.

Then, the mounting member 13 is screwed onto the outer periphery of the mouth of the container 30, and the cylinder 10 and the suction pipe 12 are suspended and housed inside the container 30. The container 30 has a bottle shape and stores contents such as a liquid and an emulsion therein.

In the present invention, an annular convex portion 10m is provided on the inner circumference of the second step portion 10b of the cylinder 10 so as to project upward toward the system 18. On the other hand, a collar portion 19m is provided on the outer periphery of the enlarged diameter portion 19c of the stem lower portion 19, and an annular recess 19n is formed so as to be surrounded by the collar portion 19m and open downward. The collar portion 19m has a hook-shaped cross section by bending the outer periphery downward at a right angle. A plurality of through holes 19p are provided in the annular recess 19n so as to vertically penetrate the collar portion 19m.

Therefore, when using the ejector, first, the injection button 27 is pushed down against the biasing member 16 to push the stem 18 into the cylinder 10. Then, the tapered portion 19d comes out of the center hole of the seal valve 17 to form a gap between the seal valve 17 and the stem 18, and the inner lower seal portion 17d of the seal valve 17 and the upper surface of the expanded diameter portion 19c of the lower stem portion 19c. Is separated downward and the inside of the cylinder chamber 11 and the inside of the stem 18 communicate with each other through the lateral hole 19e. Then, when the lower end of the expanded diameter portion 20b of the stem upper portion 20 abuts on the seal valve 17 and is pushed down in that state, the contents in the cylinder chamber 11 pass through the gap from the outer periphery of the stem 18 to the inside of the stem 18 from the lateral hole 19e. Then, it is injected through the stem 18 through the injection port 27a.

On the other hand, when carrying this ejector, the ejection button 27 is pushed and the stem 18 is further pushed, and the ejection button 27 is abutted against the fixed cap 24. Then, as shown in FIG. 1, the injection button 27 is rotated to screw the screw 27b onto the female screw 24d to lock the stem 18. At that time, the above-mentioned annular convex portion 10m enters the annular concave portion 19n to block the communication between the inside of the cylinder chamber 11 and the inside of the stem 18. Therefore, even when the stem 18 is locked and the ejector is accidentally collapsed when carrying the ejector, the solution in the container does not flow into the stem 18.

Thereafter, when the ejector is used again, when the injection button 27 is rotated counterclockwise to release the screwing, the stem 18 is pushed up by the biasing member 16. Then, the fitting between the annular convex portion 10m and the annular concave portion 19n is released, and at the same time, the upper surface of the enlarged diameter portion 19c is pressed against the inner lower seal portion 17d to interrupt the communication between the cylinder chamber 11 and the stem 18. Then, when the stem 18 is pushed up together with the seal valve 17, the inside of the cylinder chamber 11 is made negative pressure, the ball valve 15 is opened, and the contents in the container 30 are sucked into the cylinder 10.

In addition, in the above-described embodiment, while the annular convex portion 10m is provided on the inner surface of the cylinder 10, the stem 18 is provided with the annular concave portion 19n into which the annular convex portion 10m is fitted when the stem 18 is locked. And However, although not shown in the drawings, while the annular protrusion is provided on the stem 18, an annular recess into which the annular protrusion fits when the stem 18 is locked may be provided on the inner surface of the cylinder 10.

[0023]

[Effect of the device]

 From the above, according to the present invention, when the injection button is pressed to further push the stem into the cylinder and lock it, one of the annular projections at the lower end of the stem or the inner surface of the cylinder becomes the other annular recess. Since it fits in and cuts off the communication between the cylinder chamber and the stem, when the stem is locked and the ejector is carried with care, even if the ejector accidentally falls down, the internal solution does not flow into the stem and leaks to the outside. Can be prevented.

[Brief description of drawings]

FIG. 1 shows an ejector according to an embodiment of the present invention,
It is sectional drawing of the principal part when a jet button is screwed to a fixed cap and a stem is locked.

FIG. 2 is a cross-sectional view of a main part of the ejector when the injection button is unscrewed when not carried.

FIG. 3 is a partial cross-sectional view of the conventional ejector when the injection button is screwed onto the fixed cap and the stem is locked when carrying the ejector.

FIG. 4 is a partial sectional view of the ejector when the injection button is unscrewed when not carried.

[Explanation of symbols]

 10 Cylinder 10m Annular convex part 17 Seal valve 18 Stem 19n Annular concave part 27 Injection button 27a Injection port

Claims (1)

[Scope of utility model registration request] 1. When in use, the injection button is pushed to push the stem into the cylinder to form a gap between the seal valve in the cylinder and the stem, and the contents in the cylinder are passed from the outer periphery of the stem through the gap. In the ejector that puts it in the stem and ejects from the injection port through the stem, while carrying it, in the ejector that pushes the injection button to further push the stem into the cylinder to lock it, the lower end of the stem and the inner surface of the cylinder An ejector comprising an annular convex portion formed on one side and an annular concave portion on which the annular convex portion fits when the stem is locked.