JPH05170294A - Discharging device - Google Patents

Abstract

PURPOSE: To discharge one or more media, which are mixed manually, discharging mixed or non-mixed, consisting of the plural actions for an energy storage method, thereby facilitating an operation by a simple structuring. CONSTITUTION: A device 1 for discharge consists of a main body 2 for a fixation on the liquid storage part and an actuation unit 4. The actuation unit 4 has a discharging hole 8 and a handle 6 for the medium in an action head 4. Further, the main body 2 is engaged with a cap 9. At this point, the device 1 for discharge is equipped with a gap spring 50 for return and filling a mechanism 70 for discharge of idle volume. And, two valve main bodies 23, 54 for valves 21, 55 having different function from the other are installed operable mutually. On one hand, an exposed actuator ram 20 surrounds an exit channel 19 and is connected to a spring 53. Thereby, a reliable operation is possible with a simple structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ejector for media, and more particularly to an ejector for ejecting one or more media by hand force or pressure in a mixed state or separately. The medium may be in the form of liquid, gas, foam, powder or the like, and may be in the form of powder or in the state of viscosity.

[0002]

2. Description of the Related Art It is preferable that a discharge device of this type is so sized as to be held by one hand and can be operated by one hand. An ejector of that kind can be at least partly made of a plastic material. Instead of metallic materials, it is preferred to use non-metallic materials such as injection molding plastic materials. In such an ejection device it is possible to move the member by deformation or sliding for the ejection operation. The action delivers the media to the exit holes by the media guide. In the case of the container-grasping type, the media guide can be formed by the container's reservoir and the channel forms an exit hole. Also,
It can also be formed by a number of similar media chambers. They fill a specific chamber with medium only during the ejection operation. It is also possible to fill the chamber in advance and then discharge by pumping up the medium present therein. This puts the ejector and certain media chambers into different operating states. These operating conditions are determined by the movement or movement of the ejector and its components.

Such a discharge device has a completely separate medium chamber, for example a storage chamber, a discharge chamber and / or a separate medium flow or respective chambers for medium in different granules. You can

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an ejector of the type described above which overcomes the drawbacks of the known constructions. In particular, to help force in at least one function or functional operation.
They must be able to be easily adapted to the specific requirements and be adjustable and / or available in a simple construction.

[0005]

In order to solve the above-mentioned problems, an energy chamber or working chamber is provided to completely seal one or all medium guides in one or all operating conditions. As an energy storage means, it may be suitable for supplying at least a portion of the fluid contained therein to one or more medium guides. In contrast to pure filling and safety valves, a very simple design results when the working chamber is at least free from valves that are opened and closed in any arbitrary operating condition.

According to the present invention, the gas spring can have a plurality of members that slide with each other. Instead of using hand pressure or pressure assistance during the ejection operation, a gas spring is used to assist the return movement. An ejecting movement for the medium or a movement similar thereto can be configured as a support function. The actuating movement of the working chamber can also be used to reduce movement and the like.

If the working chamber is formed of a substantially one-piece hollow body, for example, by vacuum deformation, an extremely simple structure can be obtained. Unlike the end faces of the helical spring, the aforementioned support part can be reinforced by contouring and / or cross-section reinforcement. Thus, even without support to the ejector, they can be dimensionally stable against the forces exerted as a result of the motion.

Instead of being partly or wholly externally arranged, the working chamber is preferably partly or completely located in at least one of the aforementioned areas. In this way, the medium flows around the working chamber directly at least during operation.

As an alternative or in addition to the above-described construction, at least two valve bodies which are movable relative to one another can be constructed wholly or partly integrally with one another and preferably provided with valve springs.

It is also possible for at least one spring to be designed as a spring washer which is partially or wholly substantially flat. In this case, the spring can be independently deformed regardless of the deformation of the chamber casing and the shape can be maintained even under the pressure of the chamber.

In another embodiment of the present invention, the packing can be arranged independently of the above-mentioned structure in at least one region of the medium guide. Unlike in the case of dimensionally stable displacers, which act through relative movement, the above-mentioned packing acts in all operating states in approximately the same area of the medium guide. However, it is deformable with respect to a particular volume, thus changing the fill volume of the extension per unit volume approximately parallel to the associated media guide portion. Instead of radial deformation, the filling body can have one or more recesses on its circumference. These recesses can be compressed by elastic deformation independent of the operating state. Therefore, the media there is moved and transported in the ejection direction. As a result, wasted space (which is not covered by pressure or compression of the pump chamber) is compressed,
Evacuation of the media is aided and / or serves to draw the media from the media reservoir.

The ejector according to the invention can be constructed with very few components. For example, it can be composed of five members. Further, if a cover and a cap for the discharge hole are included, it can be composed of six plastic members. It is also possible to make two of the same materials for all the components and regenerate them together or reuse them in a mixed state as a material for making other products.

[0013]

These and other features can be ascertained from the claims, the detailed description of the invention and the drawings. Each of these features can be embodied as an embodiment of the present invention either alone or in combination. The present invention can also be applied to other technical fields. Each of these features can independently provide a nearly possible and effective structure. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The discharging device 1 is a medium storage unit such as a bottle,
It has a body 2 for fixing to an aerosol can or the like. The pump provided in the main body 2 projects into the medium storage section through the neck of the container. The actuating unit 4 has a free end protruding outward. In the case of a pump, the operating unit 4 performs the pumping operation by hand, and in the case of a pressure vessel, only the discharge valve is opened by hand. A unit protruding into the container neck has a head that is exposed to the outside and can contact. This head can be configured as a discharge and / or operating head 5. For this purpose, the working head 5 has a discharge hole 8 for media and / or a handle 6. The connecting piece 7 projects outward beyond the handle 6 on the plate. The handle 6 on this plate is located at right angles to the direction of motion. The discharge hole 8 lies laterally in the end region of the support 7. The cap 9 is adapted to partially engage the body 2 and projects away from it, the end wall of which is formed by the handle 6.

Nearly all of the aforementioned components have a common surface 10.
It is located almost at. The operating directions are approximately parallel to them. The main body 2 has a cube-shaped casing 11 having a plurality of steps, and a cover 12 is provided at one end thereof. The cover 12 is a hollow sleeve and is engaged with the inner circumference of the casing 11. The cover 12 is engaged with the outside of the casing 11 by an outer jacket, so that a connection relation that does not move positionally is secured. At the narrow end remote from the working head 5, a piece of casing 11 has a riser or riser 13. This riser 13 is a casing 1
It can be configured integrally with 1. The riser 13 supplies the medium to the pump 11 or the discharge hole 8 from the bottom of the medium storage unit. The main body 2 is fixed to the medium storage portion by a crimp ring, a plug connector, a screw connector or the like. The body 2 has a clamping cap 14 for engaging the neck of the container. The tightening cap 14 is formed integrally with the cover 12 and the sealing flange 15. The flange 15 projects in an annular direction from the inside of the end wall of the cap 14 to seal the storage part.

The casing 11 has a longitudinal portion connected to the cover 12, in which a pump cylinder 16 is formed. An annular pump piston 17 is movably arranged in the pump cylinder 16, and the pump chamber formed by these members is compressed for discharging the medium or expanded for sucking from the reservoir. To do. The discharge from the pump chamber 18 is caused by the outlet channel 19 which follows the discharge hole 8. This channel 19 lies approximately in the shaft 10 or in the working ram 20. Its discharge is controlled by a delivery valve 21 located in the casing 11 or the cover 12. The working ram 20 connects the working rod 5 to the pump piston 7 and traverses the central hole of the cover 12. The working rod 20 is fixed to the working head 5 in a substantially stationary manner.

Two valve bodies 2 provided on the valve 21
2 and 23 are substantially annular in cross section, are joined in a telescopic manner, are movable with respect to each other without a radial gap, and are movable with a movement rod 20 provided. Has become. As a result, the inner valve body 23 is fixedly connected to the operating head 5 and is formed by the part 26 of the support member 24. The part 26 is fixed to the connecting piece 7 near the free end. The outer valve body 22 is movably arranged substantially parallel to the shaft 10 or parallel to the operation direction of the support member 24 described above. Bends when operated by hand,
It is formed by a valve member 27 made of an elastic material that expands or compresses.

1 and 2, these members 2
Reference numerals 5 and 26 are integrally connected to a support member 24, and a piece of connecting body 20 is provided between them.
The valve body 22 integrally formed with the above-mentioned members,
A ring region having a length approximately equal to the wall thickness is formed. It is then located in the outer jacket of the pump piston 7 between two peripheral keel lips spaced apart from each other or in the generally flat plane of the end face of the peripheral sealing lip remote from the medium inlet. The valve body 22 has a substantially rectangular cross section and an isosceles triangular shape, and is directed toward the valve spring 32 near the imaginary outer corner area. The valve spring 32 is at least partially annular in cross section. It has the same width with respect to the valve body 22 over the connection area or substantially the entire length thereof, and has an inner circumference which is generally stepless in shape. The valve spring 32 has a constant outer shape 33 over its entire length and is connected to the bottom edge of the valve body 22. This edge continuously passes through the triangular portion and extends almost linearly to the inner circumference of the piston jacket.

At the end of the valve spring 32 remote from the valve body 22, the inner circumference of the member 24 or 25 forms an insert housing 35 for the member 26. It extends as an insertion pin over the length of the valve spring 32 and over the length of the valve body 22. The insertion pin 26 is provided with a longitudinal groove on the outside. The outside of these grooves is covered by the valve body 22 and the valve spring 32. These grooves thus form part of the outer channel 19 which is closed at the periphery and is connected to the valve 21 or the pump chamber 18.
At the outermost end, the storage portion 35 has a width shorter than or equal to its width. At the other end, the insertion pin 26 is connected to the inner valve body 23. It is cap-shaped or hollow. The cap end wall has an insertion pin 26
Is formed by the ends of.

With the above-described structure, the outer circumference 38 of the valve body 22 expands conically with respect to the medium injection. This conical portion forms the valve body of the vent valve for the storage container. The other valve body is formed by the inner end of the hollow sleeve of cover 12. This valve opens with a passage dependency at the start of the discharge operation. Therefore, the air from the storage container can reach between the inner circumference of the cover 12 and the valve spring 32 which are open outward through the holes in the casing 11. During the return stroke or movement, the outer circumference 38 strikes the inner edge of the cover 12. When the valve 21 is closed, the force expanding in the axial direction and the force directed in the radial inward direction act on the valve body 22 and the valve spring 32. The maximum movement of the operating rod 22 is smaller than the length of the valve spring 32. It engages completely in the cover 12 in the starting position as an elastic shaft part. At the end of the range of travel, the spring 32 is still guided part way along its length into the cover 12. Therefore, the longitudinal portion of the constant cube-shaped outer shape connected to the valve body 22 forms a part of the valve spring 32 which is elastically deformable so as to bulge outward. The next part can be deformed in the cover 12 by a slight axial compression.

On the outer periphery of the valve body 23, a valve seat 51 having a shoulder shape or a conical spread shape is formed. The frustoconical cap jackets inside and outside the valve body 23 have walls of substantially constant thickness. The valve seat 51 defines an annular valve opening which can be closed completely. The annular valve closing surface 42 of the valve body 22 is located therein. This surface 42 defines the stop position for the closed position of the valve 21. The closing surface 42 is the valve body 22.
Is formed by the side surfaces of the triangular portion of. These sides are at right angles to each other. The closed surface 42 forms a substantially sharp edge. The flanks, which are located substantially perpendicular to the axis 10, communicate with the inner circumference of the conical section. This portion connects the valve body 22 directly to the piston jacket and has an outer circumference 38. The narrow end of the valve seat 42 is directly connected to the outer periphery of the insertion pin 26 having the same width.

The support 43 of the body 2 carries the valve spring 32 in its starting position over its entire length and in its end position of the pumping stroke over approximately half its length. The support 43 is formed by the inner circumference of the cover 12, and the operating rod 20 is slidably guided therein. The cover 12 can be provided with a longitudinal groove for escape. The associated outer circumference 33 passes over the valve body 22 over a considerable distance and a constant width and is adapted to be guided over the entire length of the support 43 at the end position of the stroke. It extends from the inner end of the hollow sleeve to the cover 12
Extends to the outer surface of. The other support 44 faces the first support 43 with a gap smaller than the material thickness of the valve spring 32. The support 44 is formed by the outer circumference of the portion of the insertion pin 26 connected to the storage portion 35. In all operating conditions, the aforementioned parts are contactless with respect to the valve spring 32 and / or the inner circumference of the valve body 22.

In a given passage of movement of the unit 4, that is, when the valve spring 32 leaves the support 43 for a sufficiently large length, the valve body 2 opens for valve opening.
2 can only rise axially from the valve seat 41. For proper adjustment, such a condition should occur towards or at the end of the pumping stroke. Valve spring 3 during this opening movement
The 2 can be moved outwards with it due to the support 44. The jacket is inflated elastically until the pumping stroke is terminated by the stopping action.

The valve 21 is suitable for both path-dependent and pressure-dependent control. This valve can operate both as a slide valve and as a hose valve. In the case of the path-dependent opening, the valve body 22 moves beyond the stop portion 57, and the stop portion 57 is moved.
The members associated with the above collide during the movement of the operating head 5. This stop 57 can be formed by an inner shoulder at the end of the cylinder 16. A pump piston 17 is arranged in the cylinder 16. The valve spring 32 can be completely tension-free in the closed or start position.

The portion 25 of the member 24 is the valve spring 3
It is constructed integrally with the shaft portion 47 connected to 2.
This part is arranged in the outer jacket of the connecting piece 7 constantly and without deformation over substantially its entire length.
A nozzle core 48 is formed at the outer end thereof. A nozzle core 48 is formed as a means for turning around at the inner end of the nozzle hole forming the discharge hole 8. This nozzle core 4
8 projects beyond the end of the shaft portion 47 in the axial direction. This end portion is firmly pressed into an insertion sleeve or socket 49 located in the outer jacket of the connecting piece 7. This is connected integrally with the connecting piece.

At this outer end, or in the transition region to the outer jacket, the socket 49 forms a nozzle cap 58. The nozzle cap 58 is formed integrally with the connecting piece 7. The nozzle core 48 is arranged inside the cap end wall which the outlet hole 8 crosses. The nozzle core 48 is provided with an outer shape 59 on its end surface for causing a rotational movement. Thereby, the inside of the end wall of the cap can be made flat and stepless. The outlet channel 19 is surrounded by the member 25 between the insert pin 26 and the nozzle core 48 over the entire circumference. Following the area of the nozzle core 48, this channel has a flat oval cross section. Near the rear of the nozzle core 58, away from the discharge hole 8, the inner or outer channel 19 has a shaft portion 47.
To the inner circumference of the nozzle cap. The flow is axially reversed along the outside of the nozzle core 48 and is again guided radially outwardly along the contour 59 to the outlet opening 8. With the above configuration, the socket 49 can be very short. The shaft portion 47 extends over substantially its entire length, or between the casing 11 and the cover 12 or the body 2 and the remote opposing surfaces of the socket 49, i.e. inside the connecting piece, the handle 6 and the cap 9.
It can be positioned without contact between.
The end 76 of the operating rod in the socket 49 has an outer width which is reduced compared to the connecting or remaining area of the shaft portion 47.

The operating rod 20, including the valve 21 and other members, is inserted into the cover 12 from the inside as a pre-assembly 50 and is connected to the operating head 5. This assembly includes two pre-assembled subassemblies 51,52. One of these subassemblies is integrally formed and has a support body 25 and a valve member 27. The other subassembly 52 may likewise be constructed in one piece and continuously. Apart from the core body 26 and the valve body 23, there is a valve body 54 of a suction valve 55 for medium suction and / or a return spring 53 for the unit 4.
Is provided. The valve seat 56 is formed by the inner ring shoulder of the casing 1. The return spring 53 is configured as a bellows and / or a gas spring, and approximately in the casing 11 the shaft 1
It is located at 0. And this is the pump piston 1
7, engaging a narrow casing part connected to the pump chamber 18 and / or the cylinder 16. The impingement portion on the body 2 can be formed by the valve seat 56.

According to the invention, the elastically deformable shaft portion is formed by the valve spring 22, which is directly on the body, ie on the casing 11 or the cover 12.
That is, that is, the outer circumference thereof is guided by the support 43. The end of the shaft portion 32 belonging to the outer end of the support 43 is located between the ends of the support 43 in each operating position. Its length is greater than the outer width of the shaft portion 32, and is in particular approximately twice as large. In substantially all operating positions, the support 44 is remote from the shaft portion 32 over most of the length of the shaft portion 33. At the start of the pumping stroke, the latter can be deformed radially inward under this compressive load by this distance, but immediately fixed by the support 44. In particular, this is achieved if the shaft portion located in the support or slide guide 43 has a plurality of consecutive portions with different inner widths in the longitudinal direction. These narrower portions 35 are shorter than their width and make a fixed connection with the elastically compressible insert pin 26.

At the start position, the slide guide 43
The inner end of the valve extends near the delivery valve 21 and a vent or relief valve 74 surrounds the latter. The force of the return spring 53 acts on the outer surface 38 of the cone. In this way, the valve body is precisely centered under the load of its closing movement. The shaft portion 32 is exposed to the spreading force. The connection between the outer circumference 38 and the pump piston 17 can occur such that the connection between the piston lip (s) and the dam can be slightly radially inwardly deformed by the aforementioned spring force. Therefore, with respect to their pressing forces on the cylinder passages in the starting position, the piston lips are opened, but the rigid connection is not released.

With this structure and the supports 43 and 44,
It is possible to make the body 51 or all parts in the casing region from a soft elastic material, without the risk of permanent deformation. Connected to the shaft portion 32 or the storage portion 35 is a reinforcing portion 75 that is long in the cross-sectional direction of the shaft portion 47. It is connected outwards in the discharge direction 8. The outer width of this portion is the same as the shaft portion 32. However, the inner width thereof is smaller than that of the storage portion 35. Inner width is outlet channel 19
Form the relevant part of. This longitudinal portion 75 is at the start position and the slide guide 43 and the socket 4
It extends over 9 and almost half the length. It leads to a weaker longitudinal part, its outer width is reduced and at its end is formed a hollow plug 76 for reception in the socket 49. The other end of the dam 20 or member 24, i.e. the associated end of the pump piston 17, forms an end stop for the pumping movement and moves to that stop 57.

Chamber jacket 61 and two end walls 6
In 2, 63, the return spring 53 forms a closed working chamber 60, and at the start position, the working chamber 60 is filled with air under pressure to form a compression chamber. The cap-shaped end wall 62 is the valve body 23.
Is formed. The end wall 63 arranged at the medium suction portion is substantially flat. The chamber jacket 61 is a bellows and has a constant configuration over substantially its length. The opposite frustoconical longitudinal portions are movable relative to each other until their inner and outer surfaces are fully engaged. One of these longitudinal sections integrally connects end wall 62 to the end of the cap jacket. The other longitudinal portion is connected to the generally cylindrical jacket edge of the end wall 63.

In the operating ram 20, the end of the spring 53 is fixed during the return stroke via the insert pin 26 or via the valve seat 41 with respect to the unit 4.
At the other end, the outer peripheral portion on the outer side of the end wall 63 is supported by a shoulder-shaped surface 64. These shoulder-shaped surfaces 64 extend in a ring around the axis 10 and beyond the inside of the casing 11.
These are formed by the protruding ends of the ribs 65 in the longitudinal direction on the jacket of the casing 11, and guide the chamber jacket 61 to the center by guiding it on the outer peripheral surface. The shoulder-shaped surface 64 extends radially between the narrowest inner circumference and the widest outer circumference of the chamber jacket 61. Therefore, the central region of the end wall 63 is not supported by the large radial region.

Working chamber 60 or chamber jacket 61
Is located in the casing region 66 in most of the longitudinal direction in the starting position. This casing region 66 is compressed compared to the pump chamber 88. This casing region is connected to a stop 57, passes through to the valve 55 and is provided with a longitudinal rib 65 over its length. The remainder of this length is located in the pump chamber 18 or pump piston 17. At the end of the pumping stroke, its inner circumference forms an extension of the inner circumference of the casing region 66. Therefore, the spring 53 ensures that the hollow packing 7 is securely closed within its outer boundary with respect to the aforementioned area.
0 is shown. The filling body 70 forms a casing region 66 over the entire length above the gap 67 on the jacket. The gap 67 is located between the inner circumference of the jacket of the casing 11 and the outer circumference of the chamber jacket 61.

A corresponding but slightly wider gap is formed in the pump chamber 18 and pump piston 17. Due to the outer shape of the chamber jacket 61, a plurality of circular recesses 68 continuous in the axial direction are formed on the outer periphery of the latter. The bottom of these recesses 68 is defined by two side surfaces that are angled to each other in the axial region. In cross section, its bottom is radially outwardly extended to a longitudinal channel 69 formed between a plurality of longitudinal ribs 65. These are free from flow in all operating states of the packing 7. These recesses 68 are compressed when the spring 53 is compressed during the pumping stroke. The media present there is moved towards the valve 21 via the gap or the longitudinal channel 69, so that the casing area 6
6 can be nearly empty during the pumping stroke.

The working chamber 60 or fill 70 or associated assembly 52 as a whole is made of a material that is flexibly capable of bending, stretching and / or compressing. The assembly 51 can be made of a similar elastic material or the same elastic material. Therefore, both engaging valve faces or the valve body of the valve 21 are made of a material which is elastically deformable by the forces generated in operation. Even if the valve body 23 is engaged with the valve seat 21,
However, even when including the peripheral surface 38 together with the shaft portion formed by the jacket of the pump piston 17 and the valve spring 32, when the discharge device 1 is set up or the assembly 5 is assembled.
When connected to 1, it can be moved by air-filling the working chamber 60. The spring force ensures a more secure seal between these areas or surfaces and the relevant surface of the body 2 and facilitates installation.

The other end of the return spring 53 is constructed integrally with the dish-shaped valve body 54. This valve body 54
Is connected by a shaft 71 to the relevant end wall of the hollow body, is remote from said end wall and is at least not dimensionally stable by compression forces but dimensionally stable. As a result, the return spring 53 forms a valve spring integrally formed with the valve body 54. The valve body 54 achieves an axial opening movement thereto. When there is a pressure difference, the valve body 54 rises axially from the valve seat 56. Therefore, the medium is the riser 13 on the valve body 54.
From the return spring 5 to the other casing area
3 is filled in the area between the outer circumference of the casing 3 and the jacket of the casing 11, and does not reach the inner surface of the outer circumference of the spring 53. By selecting the gas pressure or the air pressure in the recess of the return spring 53, the spring characteristics can be adjusted accurately.

The flat disc valve 54 is not loaded by the return spring 53 for the unit 4 formed by the collapsible chamber jacket 61, but instead another disc or plate valve spring 72.
Be loaded by. It is substantially formed by the end wall 63 and is therefore integral with the return spring 50. In the start position, the valve spring 72 has a flat truncated cone shape and bends toward the center. The outside thereof communicates with the center shaft 71. The valve spring 72 and the valve body 54 project far from the outer periphery. Thus, against the gas pressure in the working chamber 50 and against axial tension, the valve spring can compress inward while supporting the valve body 54 with respect to the shoulder-shaped surface 64.
It rolls on the shoulder surface 64 and the flat closing surface of the valve body 54 rises from the valve seat 56.

Up to this point, the open surface of the valve 55 is the working chamber 6
It can be adjusted with a gas pressure within 0. Valve seat 5
6 is formed by a relatively sharp edge surface and is formed by two side surfaces whose cross sections are perpendicular to each other,
It is annular and surrounds the inlet channel radially spaced apart. This inlet channel is formed by the inner peripheral end of the riser 13. With the above configuration, the valve body 54 is made of an elastic material. The valve seat 56 is made of a harder material. Shoulder surface 6
The inner edge of the projection for 4 simultaneously forms a longitudinal guide for the outer circumference of the valve body 54. Thus, the latter can be lifted from the valve seat 56 without being substantially tilted with respect to the axis 10 and thus even over its entire circumference.

The riser 13 is connected by a casing part to the part associated with the casing area 66. The casing portion has a truncated cone shape and has the above-mentioned protrusion inside thereof. The tube is integrally formed with the casing over its entire length required for the discharge operation or to the bottom of the storage container.

The connecting piece 7 can be closed by a one-piece protective cap 73. The protective cap 73 extends to the operating thickness surface of the handle 6 and is somewhat narrower than the handle 6.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an ejection device according to the present invention.

FIG. 2 is an enlarged sectional view showing a part of the assembly of the discharging device shown in FIG.

FIG. 3 is a sectional view showing a part of FIG. 1 in an enlarged manner.

[Explanation of symbols]

 1 Ejection Device 2 Main Body 4 Operation Unit 5 Operation Head 6 Handle 7 Support 8 Ejection Hole 9 Cap 11 Casing 12 Cover 13 Riser 14 Tightening Cap 15 Seal Flange 16 Pump Cylinder 17 Pump Piston 18 Pump Chamber 19 Outlet Channel 20 Operation Ram ◆

Claims (5)

[Claims] 1. An ejector for media, wherein at least one member for ejecting operation is provided movably, a media guide communicating with the exit hole (8), which is produced by a functional operation. Forming a medium space for receiving the medium in the operating state, providing at least one working chamber (60), defined by the at least one chamber wall, spaced from the medium space, in relation to the medium space in the at least one operating state, An ejector that is sealed and arranged as an energy storage means for at least one of a plurality of operations. 2. At least one chamber wall (61) of the working chamber (60) is at least partly formed by a bellows, which is continuous around the working chamber (60) and / or along its length. And preferably a portion having the same width over substantially its entire length. 3. At least one spring (53, 7)
2) forms a valve seat (41), in particular annular or shoulder-like, in the immediate vicinity of the chamber jacket (61) near the cap-shaped single wall (62) and / or the single wall (6)
3) forming a disc-shaped valve body (54) which is spaced apart near 3), the valve seat (41) is preferably located in the hollow region of the spring and / or the support portion (4) to which the valve body (54) is associated. 63) or the ejection device according to claim 1 or 2, which is arranged away from the disc-shaped spring (72). 4. At least one spring (53, 7)
2) In particular, the working chamber (60) forms a two-part assembly (50), the working ram (20), the pump piston (17), the delivery valve (21), the outlet channel (1).
9) A discharge device according to any one of the preceding claims, provided with a valve body (54) of the inlet valve (55) and / or a discharge nozzle core (48). 5. In the medium space, in particular in the casing space (66) connected to the piston passage,
The packing (70) is deformable to engage in each operating condition over approximately the same length, compress the media space into the annular cap (67), and change the packing volume per unit length, and / or Alternatively, an ejection device according to any one of the preceding claims, which is constituted by at least one chamber wall (61).