CN105620941A

CN105620941A - Aerosol can

Info

Publication number: CN105620941A
Application number: CN201410612330.6A
Authority: CN
Inventors: W·佛朗茨; K·泽林格
Original assignee: Thomas GmbH
Current assignee: Thomas GmbH
Priority date: 2014-11-04
Filing date: 2014-11-04
Publication date: 2016-06-01

Abstract

The invention discloses an aerosol can. The aerosol can comprises a can body. The can body is provided with an open end. A valve disk assembled to the open end is made of plastic and provided with a central part. A through hole with the limited axis is formed in the central part. Multiple finger-shaped pieces surround the through hole and extend into the can body in the axial direction of the inner surface of the central part. Each finger-shaped piece is provided with an inner end portion. Inverted hooks protruding inwards in the radial direction are formed on the inner end portions. The inverted hooks and the inner surface are partitioned in the axial direction. A distribution valve is provided with a tubular valve shell. The tubular valve shell is assembled in the space defined by the finger-shaped pieces, clamped by the finger-shaped pieces and provided with the face being inward in the axial direction. The inverted hooks abut against the inward face in the axial direction in the manner of being outwards in the axial direction. A sealing piece surrounds the through hole and is compressed between the outer end of the valve shell and the inner surface of the valve disc in the axial direction.

Description

Aerosol can

Technical field

The present invention relates to a kind of spray container. More specifically, the present invention relates to a kind of aerosol can.

Background technology

Standard spray agent container includes container or tank, and described container or tank have the end being generally open upwards, and the valve disc with distributing valve is closely fastened to described end. Valve disc is made of plastics and has middle body, and described middle body has the hole of the valve member for distributing valve.

By the known this spray container with described feature of DE3807156. The valve chest of valve disc and distributing valve is formed as one by plastics. Tank is made of plastics equally and is fused to valve disc.

Widely use main by metal, the spray container that stannum or aluminum are made especially. Valve disc is made for compacting and bending part by aluminum alloy sheet or stannum and is rigidly connected to tank by flanging process. The middle body of valve disc is dome, and described dome forms the space of the valve chest for distributing valve. Valve chest, the valve member with valve shaft (valve rod) and sealing member are placed in dome and are fixed in dome by flanging process. Flanging process causes being rigidly connected between valve chest and valve disc. Such as, by the known spray container of distributing valve that there is metal valve disc and be attached to described metal valve disc by flanging process of DE2038580 (US3,675,832) and FR2925032.

In practice, collaborative process manufactures spray container, in described collaborative process, different companies manufacture container, valve disc and distributing valve. Being obtained in that the distributing valve with different structure designs, described different structural design has multiple structure, for the different spray patterns produced according to purposes selection. The valve chest of distributing valve is generally of at least similar and even standardized size of part. They are generally of the head having forward seal, and described head is inserted in the reception space of valve disc dome.

In view of this background, it is an object of the invention to provide a kind of spray container as characterized above, described spray container is designed so that plastic valve disc can assemble separately manufactured distributing valve. And, valve disc can be alternatively coupled to canister or the tank being made of plastics. For assembling, valve disc is connected to tank and all simple for valve disc assembling distribution plate.

Goal of the invention

Therefore, it is an object of the invention to provide aerosol can or the automiser spray of a kind of improvement.

Another purpose is to provide aerosol can or the container of this improvement, and the aerosol can of described improvement or container overcome above-mentioned inferior position, and especially described container is made of plastics and has middle body, and described middle body has the hole of the valve member for distributing valve.

Summary of the invention

Spray container includes tank, and described tank has unlimited end. The valve disc being assembled to unlimited end is made of plastics and has middle body, and described middle body is formed with the through hole limiting axis. Multiple finger axially extend to tank around described through hole from the interior lower surface of middle body and each finger is respectively provided with inner end, and described inner end is formed with radially-inwardly prominent barb, and described barb is axially spaced with described interior lower surface. Distributing valve has tubular valve housing, and described tubular valve housing is assemblied between finger and is clamped by finger and have face axially inwards, and barb axially outwards leans on described. Sealing member is axially compressed between the outer end and the inner surface of valve disc of valve chest around described through hole.

Alternatively, sealing member can be the parts being integrally molded on valve disc. After assembling distributing valve, the finger forming the valve disc on described interior lower surface is substantially only subjected only to tensile stress. Because finger must be primarily designed for uniaxial tension load, so finger can be relatively thin, and there is the wall thickness of relative thin, and its length is substantially free of any substantial restriction. The clamping length of the valve chest limited by the position of the barb protruded inwardly from can be adjusted, to adapt to the size of valve chest, so that valve chest is resisted against on forward seal when sufficiently large sealing force.

According to a preferred embodiment of the invention, the finger of valve disc is the locking component of spring-biased and matches with the annular sleeve collar surface on valve chest. In order to distributing valve is attached to valve disc, by rectilinear motion, distributing valve is shifted onto in the space limited by finger, until finger is bonded on the collar portion surface of valve chest. Common package system can be used to assemble, and commercial user generally has been provided with described common package system.

Valve chest has the segmentation protuberance forming the plug-in type joint portion engaged with the barb of finger and is also in the scope of the present invention. Plug-in type joint portion is to be rigidly connected, and it is rectilinear motion and produces in conjunction with rotary motion. By axially assembling motion, the segmentation protuberance of valve chest can be introduced in the free space between the finger of valve disc. Perform axially to assemble motion, until valve chest contact retainer, for instance, the middle body of contact valve chest. Then, valve chest rotates, until the segmentation protuberance on valve chest is bonded on the barb rear protruded inwardly from the free end place of finger. By wedge shape slidingsurface, utilize that valve chest is pressed against on sealing member by the power limited axially actuated can along with rotation.

No matter whether finger is spring-biased locking component or matches with the segmentation protuberance on valve chest in the way of plug-in type joint portion, and finger is all advantageously resisted against on the cylinder annular ridge of valve chest, therefore ensures that valve chest can not transverse movement. According to a preferred embodiment of the invention, in order to connect valve chest, the valve disc of encapsulating valve chest arranges four finger.

The pre-selection of land of middle body of valve disc has reinforcing rib. The quantity of selective enhancement rib, geometry and alignment scheme so that give the sufficient dimensional stability of middle body, to bear the axial force produced when assembling during distributing valve and fill spray container by the pressure in spray container and tank. Reinforcing rib can radially aligned hole especially.

Valve disc can be manufactured at low cost as injection molding parts. It is made up of fibre-reinforced plastics especially, but can also be made up of the plastics not having fibre-reinforced part. Considerable plastics are thermoplastic polymers, in particular polyethylene terephthalate (PET), polyamide (PA), polyethylene (PE), polypropylene (PP) and polybutylene terephthalate (PBT). When using multi-part injection molding technology, valve disc can have the seal member of one, and the seal member of described one is such as made up of thermoplastic elastomer (TPE), silicone rubber or rubber.

According to the preferred embodiment of the invention, middle body is outwardly. The innovative geometries of middle body makes valve disc can be made up of little material.

Advantageously, valve disc also has collar portion, and described collar portion rests on the tank inner surface limiting tank opening border and is supported on tank skin. Due to the existence of collar portion, tank opening is centrally placed in tank opening. Additionally, axial support additionally aids location valve disc during assembling processes.

Tank can be made up of metal or plastics. Canister is rigidly connected to valve disc advantageous by flanging process. If valve disc is intended to be rigidly connected to canister, then valve disc advantageously has the collar portion having at least one radial rib, and described rib is by the metal sheet bound edge of tank, and between collar portion and the metal sheet of tank, clamping has sealing member.

If tank is made of plastics, then be worthy of consideration the some probabilities for valve disc is connected to tank. Such as, valve disc can welding or be adhered to plastic tank. Can by making valve disc thermoforming be rigidly connected to tank edge. And, it is possible to the tank and valve disc that are made of plastics is connected by hot pressing. In order to plastic cap is connected to the tank being preferably made of plastics, it is also applicable for using the non-disconnectable threaded or plug type of multi-part clamping device to connect.

Accompanying drawing explanation

With reference to accompanying drawing, in from the description below, above-mentioned and other purpose, feature and advantage will become apparent from, wherein:

Fig. 1 is the longitudinally axial sectional view of the present invention;

Fig. 2 a and 2b is face upwarding stereogram and the top perspective view of the valve disc of the container shown in Fig. 1;

Fig. 2 c is the partial cutaway side isometric view of the magnification ratio of valve disc;

Fig. 3 to Figure 14 illustrates the other embodiments of the container shown in Fig. 1.

Detailed description of the invention

Fig. 1 illustrates that cup-like containers or tank 1, described cup-like containers or tank 1 have unlimited upper end, and the valve disc 2 with distributing valve 3 is closely attached to described unlimited upper end. Valve disc 2 is made of plastics and has middle body 4, and described middle body 4 has the hole 5 of the valve body for distributing valve 3. Tank 1 and hole 5 are centered on generally vertical axis A. Valve member is also referred to bar. Finger 6 is formed on the lower surface of middle body 4, and described finger 6 has radially-inwardly prominent barb 7 at their free end place. Distributing valve 3 has tubular valve housing 8, described tubular valve housing 8 extends in the space limited by the finger 6 of valve disc 2, and barb 7 axial engagement of described finger 6 is pressed against on the sealing member 10 between valve chest 8 and valve disc 2 at the rear of the radially projecting ridge 9 of valve chest 8 and by valve chest 8.

Finger is the component of spring-biased and cooperates with the annular ridge on valve chest 8. Finger 6 leans on cylindrical circumferential surface or the annular sleeve collar surface 11 (Figure 10) of valve chest 8.

Four finger 6 that as seen from Figure 1, can be provided for attached valve chest 8 in conjunction with Fig. 2 a to 2c are angularly centered around around valve chest 8. The middle body 4 of valve disc 2 has reinforcing rib 12, and described reinforcing rib 12 radially extends relative to hole 5. In embodiment illustrated, on the lower surface of the centrally located part of reinforcing rib 12. But, reinforcing rib 12 can also on the upper surface of centrally disposed part 4. Reinforcing rib 12 gives valve disc 2 dimensional stability, in order to absorbs container inner pressure and absorbs the axial force that can produce during being arranged on by distributing valve 3 on valve disc 2 and during spray container being filled in fill system.

Valve disc 2 shown in Fig. 2 a to Fig. 2 c has collar portion 13, and described collar portion 13 rests on the tank inner surface of tank opening and is axially supported on tank edge. The middle body of valve disc outwards swells.

Valve disc 2 is made up of fibre-reinforced plastics. The example of suitable plastics is polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA) and polybutylene terephthalate (PBT), and fiber content can account for 30% to 40% by weight. As required, it is also possible to use the plastics not strengthened, valve disc 2 preferably injection mo(u)lding.

Tank 1 can be made up of metal or plastics. The tank 1 that embodiment shown in Fig. 3 is made up of metal sheet, described tank 1 is connected to valve disc 2 by flanging process (crimping) rigidity (positively). Valve disc 2 has collar portion 14, described collar portion 14 has two radially projecting ridges 15,15 ', in the ridge 15,15 ' that said two is radially projecting one is by the metal sheet bound edge (flanged) of tank 1, and sealing member 16 is clamped between the metal sheet of collar portion 14 and tank 1.

In the fig. 4 embodiment, tank 1 is made of plastics and has mouth 17, and described mouth 17 is bonded in the cannelure 18 of valve disc 2 and leans on the sealing member 19 in cannelure 18. Sealing member 19 can be placed in cannelure as separating sealing ring or by be combined into one with valve disc 2 or assemble and with chemistry, hot or with special photocuring before be injected in cannelure 18 seal member make. Cannelure 18 is defined by the inwall 20 of the outer wall 21 of valve disc 2 and dependence top tank structure. Outer wall 21 has the profile produced by thermoforming process, and this profile positive engagement is around the mouth 17 of tank 1.

In Figure 5, tank 1 is also made of plastics. Valve disc 2 has collar portion 22, and described collar portion 22 is connected to the mouth 23 of tank 1 by hot pressing process. Sealing member 24 is arranged between the wall surface of collar portion 22 and tank 1. This sealing member 24 can be sealing ring. Sealing member 24 can be made up of the thermoplastic elastic part such as having been formed in multi-part injection molding process on valve disc 2 especially, and Fig. 5 a illustrates a design variations scheme. Sealing member 24 is formed on the ring bearing surface of valve disc at this.

Fig. 6 a and Fig. 6 b also show valve disc 2, and described valve disc 2 is connected to the mouth 23 of plastic tank 1 already by hot pressing. Sealing member 24 is made up of elastic sealing element, and described elastic sealing element is formed on valve disc 2. Valve disc 2 is respectively provided with reinforcing rib 12 in the upper and lower surface of middle body 4. Provide annular reinforcing rib and relative to the aperture arrangement of reinforcing rib to location.

In the embodiment of Fig. 7, by laser welded seam 25, valve disc 2 is connected to plastic tank 1. Laser welded seam 25 connects the collar portion 13 of valve disc 2, and described collar portion 13 leans on the tank inner surface of tank opening. This laser welded seam 25 can be produced by radial direction method for laser welding; In described method for laser welding, illuminator make laser beam deflection so that it clashes into the rotationally symmetrical surface of parts to be welded. Alternatively, additionally it is possible to using such welding method in described welding method, workpiece rotates around its longitudinal axis. By means of method for laser welding, it is possible to produce pressure-tight, non-removable connection. Other sealing member can be eliminated. Solder joint can be produced in short circulation time. The wall of tank 1 allows for passing through laser, and valve disc is made up of the material absorbing laser. Design variations scheme according to Fig. 7 a, laser welded seam 25 is positioned on annular end face.

Fig. 8 and Fig. 9 has illustrated the bounding point between valve disc 2 and plastic tank 1. In the embodiment in fig. 8, the edge 26 defining tank opening of tank 1 is bonded in the cannelure 27 of valve disc 2, and the gap between the parts being bonded with each other is filled by the hot-melt adhesive 28 solidified. In order to make bounding point, welding adjuvant is placed in cannelure 27. By welding the sensing heating of adjuvant, described welding adjuvant liquefies and fills the gap between parts to be connected. This causes high intensity, permanent, heat-resisting and crash-proof bonding.

According to Fig. 9, tank has the collar portion 29 having at least one recess 30, and recess 30 can be cannelure. Valve disc 2 rests in collar portion 29 and has the connecting elements 31 being bonded in recess 30. The gap between the parts being bonded with each other is filled by the hot-melt adhesive 28 hardened. Bounding point is made in the way of identical with aforesaid way.

Figure 10 and Figure 11 relates to the threaded joints between valve disc 2 and tank 1. Tank 1 is the plastic tank of blow molding and has collar portion 32, and described collar portion 32 has screw thread, and described screw thread can be female thread 33 or external screw thread 34. In the embodiment in figure 10, screw thread is female thread 33. By non-disconnectable threaded joints, valve disc 2 is connected to collar portion 32; Sealing member 35 it is provided with between collar portion 32 and valve disc 2. In the embodiment in figure 11, described threaded joints includes lock nut 36, and described lock nut 36 is screwed on the external screw thread 34 of collar portion 32 and is pressed against in collar portion by valve disc 2. At this, sealing member 35 is similarly disposed between collar portion 32 and valve disc 2. The threaded joints illustrated in figures 10 and 11 is non-disconnectable. They advantageously have locking component, and described locking component prevents twist-on parts together from rotating along opening direction.

Replacement scheme as threaded joints, it is also possible to realize being rigidly connected by plug-in type joint portion.

Figure 12 a illustrates the plug connector 37 using the clamping component 38 shown in Figure 12 b, so that valve disc 2 is connected to plastic tank. Plastic tank 1 has the cervical region 39 of cylinder, and the collar portion 40 of valve disc 2 is bonded in the cervical region 39 of described cylinder. Outer clamping ring 41 is connected to valve disc 2, and it is encapsulated cervical region 39 and defines the annular space that the section between cervical region 39 and outer clamping ring 41 is wedge shaped. Outer clamping ring 41 is such as connected to valve disc 2 securely by laser weld. Interior clamping ring 42 is arranged in outer clamping ring 41, and it fills wedge shape annular space. Device shown in Figure 12 b is still necessary to the installation of the distributing valve by being pushed in cervical region 39 and completes. Once realize the position shown in Figure 12 a, then again this device can not be dragged from cervical region 39, this is because interior clamping ring 42 due to cervical region 39 the outer clamping ring 41 of wedging. If being the internal pressurization of tank 1 after filling the container, then power will be applied on valve disc 2 and cervical region 39, and described power is illustrated by the arrow in Figure 12 a. Due to these power, the mutual wedging of parts 39,41,42.

Sealing member 43 is arranged in wedge-like annular space, and it is deformed by moving axially relative between two clamping rings 41,42, and sealing member 43 leans on the inner surface of outer clamping ring 41 and the outer surface of cervical region 39. And, at least one lip ring 44 is arranged in the collar portion 40 of valve disc 2, and described collar portion 40 rests on the inner surface of cervical region 39. Finally, interior clamping ring 41 has with the surface of the face each other of cervical region 39 for by relative for its surface profile 45 locked. This connection is no longer able to dismounting after assembling. After filling spray container, the pressure in container increases the clamping effect between parts.

By locking connecting portion, valve disc can also be connected to tank. In the embodiment of Figure 13, valve disc 2 has lock hook 46, and described lock hook 46 is bonded on the rear of the annular sleeve ring portion 47 of the inner surface of tank. It is difficult to the locking connecting portion from outside close to the inner surface of tank and described locking connects non-dismountable. And, elastomeric seal surface 48 is formed on valve disc 2. According to content diagrammatic in Figure 14, the rear of the annular ridge 47 ' that lock hook 46 can also be bonded on the outer surface of tank. Connect in order to ensure the locking on the outer surface of tank, it is possible to using clamping ring (not shown), described clamping ring prevents lock hook to be bent upwards.

Claims

1. a spray container, including:

Tank, described tank has unlimited end;

Valve disc, described valve disc is assembled to described unlimited end and is made of plastics and has middle body, and described middle body is formed with the through hole limiting axis;

Multiple finger, the plurality of finger extends to described tank around described through hole from the inner surface axial of described middle body and each finger is respectively provided with the inner, described the inner is formed with radially-inwardly prominent barb, and described barb is spaced apart with described inner surface axial;

Distributing valve, described distributing valve has tubular valve housing, described tubular valve housing is assemblied between the plurality of finger and is clamped by the plurality of finger and have axial face face inwardly, and described barb is resisted against on described axial face face inwardly axially outward; With

Sealing member, described sealing member is axially compressed between the outer end of described valve chest and the described inner surface of described valve disc around described through hole.

2. spray container according to claim 1, wherein, described valve chest is formed with annular shoulder, and described annular shoulder forms smooth described axial face face inwardly.

3. spray container according to claim 1, wherein, described valve chest has the described barb of the protuberance of segmentation, the protuberance of described segmentation and described finger and collectively forms plug-in type joint portion.

4. spray container according to claim 1, wherein, described valve chest is formed with radially projecting ridge, and described finger radially inwardly, is flexibly resisted against on described ridge.

5. spray container according to claim 1, wherein, described middle body is formed with reinforcing rib.

6. spray container according to claim 5, wherein, described reinforcing rib extends radially outwardly from described through hole.

7. spray container according to claim 1, wherein, described valve disc is made up of fibre reinforced plastics.

8. spray container according to claim 1, wherein, described middle body projects axially outward.

9. spray container according to claim 1, wherein, described valve disc has periphery, and described periphery is formed with annular sleeve ring portion prominent axially inwards, and described annular sleeve ring portion is assembled to the described unlimited end of described tank.

10. spray container according to claim 9, wherein, described tank is made up of metal sheet and is rigidly connected to described valve disc by flanging process.

11. spray container according to claim 10, wherein, described collar portion is formed with at least one radial rib, at least one radial rib described is connected to the described unlimited end of metal sheet tank by flanging process, and described container also includes the sealing member between described collar portion and described tank.

12. spray container according to claim 1, wherein, described tank is made of plastics and has mouth, described mouth is centered on described axis and is formed with the edge projected axially outward, described valve disc is formed with the groove that ring shaped axial inwardly opens wide, described unlimited groove is complementally assemblied on described edge and is formed between the inner walls and the outer, and described outer wall thermoforming is to be rigidly engaged in around described edge.

13. spray container according to claim 1, wherein, described valve disc has periphery, and described tank is made of plastics and in the thermal deformation around described periphery of described unlimited end, described container also includes:

Sealing member, described sealing is between described periphery and the described unlimited end of described tank.

14. spray container according to claim 1, wherein, described tank is made of plastics and adheres to described valve disc or by valve disc described at least one laser welded seam compact siro spinning technology.

15. spray container according to claim 1, wherein, described tank has collar portion, and described collar portion has a screw thread and described valve disc is provided with the screw thread of the described screw thread being assembled to described collar portion, and described container also includes:

Sealing member between described collar portion and described valve disc.

16. spray container according to claim 15, wherein, described screw thread has locking component, and described locking component prevents from being rotated along opening direction by the valve disc being threaded togather and tank.

17. spray container according to claim 1, wherein, described valve disc has the periphery of the annular sleeve ring portion being formed with in axially determining, and described tank is made of plastics and has cylindrical neck portion, described collar portion is assemblied in described cylindrical neck portion, and described container also includes:

Outer clamping ring, described outer clamping ring is attached to described valve disc and collectively forms, with described tank, the space that cross section is triangle; With

Cross section is the interior clamping ring of triangle, and described interior clamping ring is assemblied in described space and is radially inwardly bonded on described tank and is bonded on radially outwardly on described outer clamping ring.

18. spray container according to claim 1, wherein, described tank has radially projecting annular sleeve ring portion in its end opened wide, and described annular sleeve ring portion is centered on described axis, and described lid is formed with the axially projecting arm with barb; When described valve disc is assembled to described unlimited end, described arm snaps engagement in below described collar portion.

19. spray container according to claim 1, wherein, described tank and described valve chest are relative to the Axial-rotational Symmetry of described through hole.

20. spray container according to claim 1, wherein, described distributing valve includes the valve body being positioned at the spring-biased within described valve chest.