EP4192623A1 - Assemblage etanche d'une membrane souple de pompage et d'un embout rigide d'une pompe d'un systeme de distribution sans air d'un produit liquide ou pateux - Google Patents
Assemblage etanche d'une membrane souple de pompage et d'un embout rigide d'une pompe d'un systeme de distribution sans air d'un produit liquide ou pateuxInfo
- Publication number
- EP4192623A1 EP4192623A1 EP21734418.3A EP21734418A EP4192623A1 EP 4192623 A1 EP4192623 A1 EP 4192623A1 EP 21734418 A EP21734418 A EP 21734418A EP 4192623 A1 EP4192623 A1 EP 4192623A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- hook
- tubular wall
- flexible tubular
- axial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/0072—A valve member forming part of an outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1028—Pumps having a pumping chamber with a deformable wall
- B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0008—Sealing or attachment arrangements between sprayer and container
- B05B11/0013—Attachment arrangements comprising means cooperating with the inner surface of the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
- B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
Definitions
- TITLE WATERTIGHT ASSEMBLY OF A FLEXIBLE PUMPING DIAPHRAGM AND A RIGID END OF A PUMP OF AN AIRLESS DISTRIBUTION SYSTEM FOR A LIQUID OR PASTY PRODUCT
- the present invention relates to an airless dispensing system, also called “airless”, that is to say without air intake so that the dispensed product is never in contact with the air before it is dispensed.
- airless an airless dispensing system
- the precise dosage of the quantity of product dispensed during each use is ensured by means of a pump integrated into the system.
- the invention relates more particularly to a sealed assembly of a section of flexible tubular wall forming one end of a flexible pumping membrane, and a rigid endpiece belonging to the pump.
- An “airless” dispensing system is used in particular for dispensing products which are likely to deteriorate on contact with air. They may be pharmaceutical products or cosmetic products such as care creams, of fluid consistency, that is to say liquid or pasty products.
- the fluid product is packaged in a container whose volume, at any time during use, corresponds precisely to the residual quantity of the product it contains, the product never being in contact with the air inside the container.
- such a dispensing system comprises a pump provided with a variable volume dispensing chamber provided with an inlet connected to the container, and with an outlet for evacuating the air-sensitive product to be dispensed.
- a precise distribution system of known design consists in actuating a piston by a back and forth movement in a cylinder.
- valves consisting of balls or movable rigid flaps.
- a conventional pump whose dispensing chamber consists of a piston sliding in a cylinder, allows precise metering of the dispensed quantity of the fluid product, thus making it possible to avoid imprecise or excessive use of the product packaged in the container. .
- Such a type of distribution system is composed of a large number of parts and components, which complicates its manufacture and assembly, increases its cost, especially when the system is airtight from the container to the at the product outlet.
- an airless dispensing system which comprises a lower container which contains the product and an upper pump which is mounted on the container and which comprises a rigid nozzle which is mounted at the upper end of the container and which comprises a central chimney provided with a passage channel for the product to be dispensed.
- the pump also includes a push button which is mounted to slide relative to the rigid end piece between a high rest position and a low actuation position. The upper part of the push button has a product outlet orifice.
- the pump comprises a flexible membrane for pumping the product which is shaped like a bellows for pumping the product.
- the flexible membrane comprises an upper end section which is fixed to the push button by a sealed connection and a lower end section which is fixed to the rigid end piece by a sealed connection.
- the product dispensing chamber formed inside the bellows must withstand high pressures that can reach 2 (two) bars, i.e. a value of l order of ten times the triggering threshold value of the internal valves of the pump. 5 Such pressures inside the bellows are likely to cause leaks, or even separation of the end of the bellows from its associated component, rigid lower nozzle or upper push button.
- each sealed connection requires the implementation of techniques 0 for assembling each end section by axial fitting with radial tightening in a complementary housing of the tip and push button respectively.
- Such designs and assembly techniques do not allow a simple and automated high-speed industrial implementation.
- the object of the invention is to propose an assembly, sealed under high pressure, of a section of flexible tubular wall forming one end (for example the lower end) of a flexible pumping membrane and of a nozzle rigid, this sealed assembly being designed to be produced automatically by the effect of mounting the push button on the rigid end piece.
- the invention proposes a sealed assembly, along a vertical axis oriented from the bottom upwards, of a section of flexible tubular wall forming the lower end of an upper flexible membrane capable of being compressed along the vertical axis of the assembly, and of a rigid end piece, characterized in that: a) the section of flexible tubular wall comprises successively and axially from top to bottom along the axis: a1) an upper portion with at least one first sealing surface; a2) an intermediate portion with an inner face of the flexible tubular wall; a3) a first retaining hook arranged at the lower end of the section of flexible tubular wall, and in that: b) the rigid end piece comprises: b1) a central chimney which is capped and at least partially surrounded by the section of flexible tubular wall and which comprises successively and axially from top to bottom along the axis; b11) an upper portion in which the central chimney has a second sealing surface which cooperates with the first sealing surface of the upper portion; b12) an intermediate portion with an outer face which is remote
- such a sealed assembly is characterized in that:
- the upper portion of the section of flexible tubular wall consists of an upper axial wall of which an internal face in the form of a truncated cone flared downwards is the first sealing surface;
- the upper portion of the central stack has the shape of a truncated cone flared downwards, one side face of which is the second sealing surface;
- such a sealed assembly is characterized: -- in that the upper portion of the section of flexible tubular wall comprises successively, in a horizontal direction oriented outwards from the vertical axis:
- the upper portion of the central chimney comprises a tubular axial housing open axially upwards in which is housed axially the inner tubular axial sleeve, one side face of which is the second sealing surface;
- the upper portion of the section of flexible tubular wall comprises a first bearing face oriented downwards and delimited in said horizontal direction between the inner tubular axial sleeve and the upper axial wall; 5 -- the upper portion of the central chimney has a second support surface facing upwards;
- the sealing function and the support, along the vertical axis, of the upper portion of the section of flexible tubular wall on an upper portion0 of the central chimney are ensured separately on the one hand by the cooperation of the two sealing surfaces and, on the other hand, by the mutual support of the two bearing faces.
- the first hook comprises a frustoconical annular retaining face oriented upwards and flared downwards which rests, along the vertical axis, on a truncated annular complementary retaining face, oriented downwards and flared downwards, belonging to the second bracket;
- the sealed assembly is characterized in that the thickness of the upper axial wall is greater than the thickness of the intermediate portion of the flexible tubular0 wall section; WO 2022/029374 PCT/FR2021/050979
- the thickness of said upper portion of the flexible tubular wall section is greater than the thickness of the intermediate portion of the flexible tubular wall section;
- the upper portion of the flexible tubular wall section comprises an outer ring of rigidification which is arranged axially in a horizontal plane perpendicular to the vertical axis located at the upper end of this upper portion of the flexible tubular wall section;
- the intermediate portion of the flexible tubular wall section has a tapered shape 0 flared downwards;
- the intermediate portion of the section of flexible tubular wall is delimited by a frustoconical internal face flared downwards; and the intermediate portion of the central chimney is delimited by a cylindrical outer side face;
- the first hook is a continuous annular hook and the second hook is an annular hook divided into several sectors;
- the assembly successively comprises the first hook which is oriented outwards, and the second hook which is oriented inwards;
- the sealed assembly comprises at least one annular ramp formed on the first hook and/or on the second hook to cause deformation of the intermediate portion of the section of flexible tubular wall allowing axial crossing of the second hook by the first hook during the assembly of the section of flexible tubular wall and the rigid endpiece;
- the rigid end piece comprises a tubular skirt which surrounds the central chimney, and in that the second hook is arranged at an upper end of this skirt;
- the side skirt and the second hook are divided into several sectors separated by axial slots;
- 0 - the upper flexible membrane is shaped like a bellows with consecutive folds capable of being compressed along the axis of the assembly;
- the upper flexible membrane is made of a low density polyethylene whose density is less than or equal to 0.900.
- the invention also proposes an airless dispensing system for a liquid or pasty product5 which comprises a lower container which contains the product and an upper pump which is mounted on the container and which comprises:
- the invention also proposes a method for assembling a dispensing system according to the invention, characterized in that it comprises the successive steps consisting in producing the pump: 0 - e1) by axially assembling the flexible membrane, shaped as pumping bellows, and the push button by fixing its upper end section to the push button;
- the pumping bellows In the low position of actuation of the push button, the pumping bellows is compressed in an intermediate state between a first extreme state before compression and a second extreme state of crushing.
- the pumping bellows induces a pressing force of the section of flexible tubular wall on the central chimney which is sufficient to simultaneously allow the axial crossing of the second hook by the first hook, and the sealed support of the two complementary sealing faces.
- FIG.1 - Figure 1 is a perspective view in section through an axial plane of a dispensing assembly according to a first embodiment of the invention
- 5 [Fig .2] - Figure 2 is a sectional view of the flexible pumping membrane of the assembly shown in Figure 1;
- FIG.3 - Figure 3 is a sectional view on a large scale which illustrates the flexible pumping membrane and the rigid endpiece in a relative vertical position corresponding to a phase of the assembly of these two elements which is prior to their mutual clinging;
- FIG.4 - Figure 4 is a detail view on a larger scale of part of the two elements shown in Figure 3 which are shown in the relative assembled position in which the two hooks are in mutual support;
- FIG.5 is a view of part of the two elements illustrated in figures 3 and 4
- FIG.6 is a sectional view of a second embodiment of a flexible pumping membrane0; of the assembly shown in Figure 1
- FIG.7 is a sectional view of a second embodiment of a complementary end piece of the flexible pumping membrane shown in Figure 6;
- FIG.8] - Figure 8 is a view, similar to that of Figure 5, of part of the two elements illustrated in Figures 6 and 7 which are shown in a state corresponding to a low position of actuation of the button pusher, the pumping bellows being compressed in an intermediate state between a first extreme state before compression and a second extreme state of crushing, and the relative position assembled and in which the two hooks are in mutual support. 0
- the vertical axis V is oriented from bottom to top.
- the distribution system S represented in FIG. 1 comprises an upper pump P and a lower container 400.
- the upper pump P comprises a rigid lower end piece 200, an upper sliding push button 300 and a flexible internal pumping membrane 100 shaped like a bellows.
- the open upper end 402 of the lower container 400 is in the form of a rigid tubular portion shaped internally to allow the assembly and tight fixing of the rigid lower end piece 200 on the container 400 to close the latter after it has been filled in product to distribute.
- the rigid end piece 200 is in the form of a cylindrical pot which - without limitation - is here made here by molding in one piece.
- the rigid end piece 200 comprises a bottom wall 220 and a tubular side wall 222 which extends the bottom wall 220 at its periphery and which extends vertically upwards.
- the side wall 222 is shaped externally complementary to the internal shaping of the upper open end 402 of the lower container 400.
- the bottom wall 220 is here of substantially flat and horizontal annular shape and it is extended centrally and axially upwards by a central chimney 202 of generally tubular shape, here centered on the axis V.
- the rigid end piece 200 comprises an annular side skirt (cylindrical tubular) 225 which extends axially upwards from the upper face 221 of the bottom wall 220, here approximately over half the height of the central chimney 202.
- the side skirt 225 is here angularly divided into several angular sectors 205 separated by regularly distributed axial slots 207 (see FIG. 1).
- the central chimney 202 comprises axial channel 218 for passage of the product which opens into the horizontal annular upper face 224 of the central chimney. 5
- the upper end of the axial channel 218 is closed by a flexible valve 226 of known design which is carried by a central axial pin 228 which projects vertically above the horizontal annular upper face 224 of the central chimney 202 .
- the push button 300 comprises a cylindrical side skirt 302 delimited axially downwards by a lower annular edge 304 and by an upper shoulder 306 projecting radially outwards.
- the side skirt 302 of the push button 300 is guided in axial sliding inside the side wall 222 of the rigid end piece 200, between a high rest position in which its upper shoulder 306 is in axial abutment upwards against a upper shoulder 223 projecting radially inwards from the side wall 222 of the rigid end piece 200, and a low actuation position (not shown in the figures) in which the lower annular edge 304 is in abutment against a zone in vis-à-vis the upper face 221 of the bottom wall 220 of the rigid end piece 200.
- the push button comprises a rigid end piece 310, for sealed fixing of the section 122 of the upper end of the flexible membrane 100, which includes a central chimney 312 which extends axially downwards inside the push button 300.
- This chimney 312 delimits an internal cylindrical housing 314 in which the upper end section 1225 of the flexible membrane 100 is tightly mounted and is fixed therein in a sealed manner.
- the upper end section 122 of the flexible membrane 100 comprises a central axial passage 129 of the product which opens into the horizontal annular upper face 131 of the section 122.
- the upper end of the axial channel 129 is closed by a flexible valve 320 of known design which is carried by a central axial pin 322 which - from the upper wall 316 for actuating the push button 300 - extends projecting vertically downwards above the horizontal annular upper face 131 of the upper end section
- the axial channel 129 opens inside an upper cavity 324 which is connected to a spout 326 for dispensing the product which is provided with an annular valve 328 for closing the spout outlet 326 dispensing.
- the flexible walls of the flexible non-return valves 226 and 320 are each cone-shaped. These flexible walls are deformed during the assembly of the flexible valves 226, 320 on the pins 228, 322 by the bearing and stressing of the internal face of the large base of the cone on the annular face vis-à-vis 224, 131 respectively.
- the rigid end piece 200 are two parts of revolution which have a general symmetry of design around the vertical central axis V, and all the parts, portions or so-called tubular, cylindrical, conical or frustoconical sections are of section(s) globally circular(s).
- the flexible pumping membrane 100 is made in one piece by molding and, as can be seen in particular in Figure 2, the flexible pumping membrane 100, which is here shaped as a pumping bellows, comprises successively, vertically bottom to top:
- the main central portion 128 of the pump bellows can be compressed before assembly, between a first state or extreme position before compression and a second state or extreme position "crushing" in which all the plies 120 are in crushing contact with the against each other.
- the compression state of the pumping bellows 100 is modulated between two intermediate states or positions located between the first state or extreme position before compression and the second state or extreme crush position.
- the first state or intermediate position is associated with the high rest position of the push button 300, while the second state or intermediate position is associated with the low actuation position of the push button with respect to the rigid end piece.
- the section 102 of flexible tubular wall comprises successively and axially from top to bottom:
- a first hook 108 which is here arranged at the lower end of the section 102 of tubular wall.
- the upper portion 104 consists of an axial upper wall 111 which has a concave internal surface 103 tapering downwards.
- the thickness of the upper axial wall 111 is greater than the thickness of the main central portion 128 shaped like a bellows and of the intermediate portion 106 of the tubular wall.
- the half-angle at the apex of the frustoconical concave internal surface 103 is less than or equal to 20 (twenty) degrees of angle and preferably equal to 10 (ten) degrees of angle.
- the intermediate portion 106 is delimited by an internal surface 114 which here is frustoconical concave flared at the bottom.
- the thickness of the intermediate portion 106 is less than that of the upper portion 104 which it extends axially downwards.
- the first hook 108 is in the form of a bead or annular rib which, in the horizontal direction D shown in the figures, extends horizontally outwards.
- the first hook 108 has an active annular retaining face 109 oriented vertically upwards. 5
- the annular face 109 is here frustoconical flared downwards and its half-angle at the top is greater than or equal to 60 (sixty) degrees of angle and preferably equal to 70 (seventy) degrees of angle.
- the first hook 108 also comprises an upwardly tapered annular ramp 116 whose half-angle at the top is preferably equal to 25 (twenty-five) degrees of angle. 0
- the central chimney 202 of the rigid end piece 200 comprises successively:
- an upper portion 204 which extends from the upper end of the chimney and which comprises a convex external surface 203 in the shape of a truncated cone flared downwards which is capable of cooperating in a sealed manner with the concave internal surface 103 of the section 1025 of tubular wall;
- the half-angle at the apex of the frustoconical convex external surface 203 is equal to the apex half-angle of the frustoconical concave internal surface 103 and is therefore here equal to 10 (ten) degrees of angle.
- the space E is here globally of triangular rectangle shape.
- the rigid end piece 200 includes a second hook 208 which is here arranged at the upper end of the side skirt 225.
- the second hook 208 is in the form of an annular bead or rib which, along the horizontal direction D indicated in the figures, extends horizontally inwards in the direction of the axis V and of the first hook 108.
- the first hook 108, the side skirt 225 and the second hook 208 are of generally annular conformation.
- the second hook 208 has an active annular retaining face 209 oriented 0 vertically downwards.
- the annular face 209 is here tapered tapered downwards and its half-angle at the top is substantially equal to that of the first hook 108 and is preferably equal to 70 (seventy) degrees of angle.
- the second hook 208 also comprises an annular ramp 216 frustoconically flared upwards and its half-angle at the top is preferably equal to approximately 25 (twenty-five) degrees of angle. During assembly, this ramp 216 is able to cooperate with the annular ramp 116 of the first hook 108.
- the assembly 0 in the embodiment illustrated in the figures and in particular in Figures 3 and 4, in the horizontal direction D oriented outwards from the vertical axis V, the assembly 0 successively comprises the rigid central chimney 202, the section 102 of flexible tubular wall with its first hook 108 which is oriented outwards, and the second hook 208 which is oriented inwards and which is arranged at the upper end of the rigid side skirt 225.
- the second hook 208 surrounds the first hook 108.
- the pumping membrane 100 and in particular its section 102 of tubular wall which makes it possible to assemble and fix here the lower end of the pumping membrane 100 on the rigid end piece 200 , is made of a flexible material, preferably slightly elastic, for example elastically deformable by 5%. and beyond in elongation.
- This flexible material is elastically deformable beyond 5% (five percent) 0 of elongation. By convention, it is specified that - after elastic deformation - the elastically deformable material returns to its initial state and to its initial shape.
- the constituent material of the pumping membrane 100 is low density polyethylene (LDPE) whose density is less than or equal to 0.900 or
- AFFINITYTM PL 1280G material
- POP polyolefin plastomer
- the assembly of the main components of the pump P is carried out as follows. During a first step, after the assembly of the flexible valve 320 on the pin 322, the upper end section 122 of the flexible membrane 100 is fixed by inserting it axially by force in the housing 314. Then, the subassembly thus produced is mounted on the rigid end piece 200 whose central chimney 202 has previously been equipped with the flexible valve 226 by mounting on the pin 228.
- the assembly is carried out by relative movement of the push button 300 - and therefore of the flexible membrane 100 which is already attached to it - relative to the rigid end piece 200 by axially introducing the side skirt 302 of the push button 300 inside the side wall 222 of the rigid end piece 200 until the axial crossing of the shoulder 223 by shoulder 306.
- the lower section 102 of the tubular wall gradually covers and surrounds the central chimney 202, here at least its upper portion 204 and its intermediate portion 206. 5
- the dimensions and in particular the relative vertical positions of the different portions of the two elements are such that the relative displacement results in an intermediate relative axial position illustrated in FIG. 3 in which the concave frustoconical internal surface 103 of the tubular wall section 102 is in contact with the convex frustoconical external surface 203. From this relative axial position, the concave frustoconical internal surface 103 of the tubular wall section 102 bears, along the vertical axis "V" on the convex frustoconical external surface 203.
- the crossing can be facilitated by combining the axial displacement with a rotational movement of the push button 300 - flexible membrane 100 assembly with respect to the rigid end piece 200.
- the push button 300 can be pushed to its low actuating position in which the lower annular edge 304 is in abutment against the area opposite the face. upper 221 of the bottom wall 220 of the rigid end piece 200. 0 As illustrated in FIG. compression and a second extreme state of crushing.
- this intermediate state or position of compression induces a bearing force of the section 102 of flexible tubular wall on the central chimney 202 which is sufficient to simultaneously allow the axial crossing of the second hook 208 by the first hook 108, and the sealing of the two complementary frustoconical surfaces, internal concave 103 and external convex 203, including when the chamber inside the bellows is subjected to a high overpressure of up to 2 (two) bars.
- the compressed bellows relaxes and performs its elastic return function of the push button 300 towards its high rest position.
- the two complementary annular surfaces 109 and 209 then remain in mutual support without play and the two complementary frustoconical surfaces, internal concave 103 and external convex 203 are in leaktight contact. 5
- the design according to the invention makes it possible to automatically carry out the fixing by a sealed connection of the section 102 of flexible membrane on the end piece 200.
- the assembly of the system S continues by mounting the pump P on the upper end of the container 400 previously filled with the product. This step is carried out by fitting the rigid end piece 200 - also called hoop - into the open upper end 402 of the lower container 400.
- the upper portion 104 includes a ring 150 of rigid if ication which extends radially outwards relative to
- the assembly then successively comprises the rigid central chimney 202 , the second hook 208 which is oriented outwards, then the section 102 of flexible tubular wall with its first hook 108 which is oriented inwards.
- the second hook 208 which is oriented outwards and which is arranged at the upper end of the rigid side skirt 225 is then surrounded by the first hook 208.
- said upper portion 104 of the section 102 of flexible tubular wall comprises successively, in a horizontal direction D5 oriented outwardly from the central axis V, a first tubular axial sleeve inner 130, and the upper axial wall 111 which is arranged radially outward with respect to the sleeve 130.
- the upper axial wall is in the form of an outer tubular axial sleeve with respect to the inner sleeve 130.
- the sleeve 130 and upper axial wall 111 are coaxial along the vertical axis V.
- the inner sleeve 130 is delimited laterally by an inner concave cylindrical surface 105 and by an outer convex cylindrical surface 103 which constitutes the first sealing surface within the meaning of the invention.
- the surface 103 is here shaped with a bulge 107 forming a seal.
- the inner sleeve 130 is delimited axially downwards by a free end lower edge 133.
- the lower edge 133 extends substantially in the horizontal plane which delimits the upper section 0 with respect to the intermediate section 106.
- the bearing face 132 extends here in a horizontal plane.
- This first bearing face 132 is oriented downwards and is delimited along the horizontal direction D between the inner tubular axial sleeve 130 and the upper axial wall 111.
- the chimney 202 of the endpiece 200 comprises a tubular axial housing 230 centered on the vertical axis V and which is open axially upwards, opening into the horizontal annular upper face 224 of the central chimney 202.
- the housing 230 is delimited laterally by an inner convex cylindrical surface 205 and by an outer concave cylindrical surface 203 which constitutes the second sealing surface within the meaning of the invention which is capable of cooperating with the first sealing surface 103.
- the housing 230 is delimited axially downwards by a bottom which is here an annular face 233.
- the bottom 233 extends substantially in the horizontal plane which delimits the upper portion 204 with respect to the portion 206 of the central chimney 202.
- the housing 230 delimits in the upper part 204 of the central chimney a radially outer tubular axial part 240 which is delimited axially upwards by an upper annular edge 232 at the free end which constitutes a second bearing face within the meaning of the invention which is capable of cooperating with the first bearing face 132.
- the annular edge 232 extends here in the horizontal plane of the horizontal annular5 upper face 224 of the central chimney 202.
- Sealing is ensured here by the sealing support of the first sealing surface 103, and in particular of the bulge 107, against the portion facing the second sealing surface 203.
- the bearing surfaces 132 and 232 bear against each other along the vertical axis V.
- the assembly of the main components of the pump P is carried out in the same way as that described with reference to the first embodiment.
- this intermediate state or position of compression induces a bearing force of the section 102 of flexible tubular wall on the central chimney 202 which is sufficient to simultaneously allow the axial crossing of the second hook 208 by the first hook 108, and the axial bearing of the two bearing surfaces 132 and 232, including when the chamber inside the bellows is subjected to a high overpressure of up to 2 (two) bars.
- the compressed bellows relaxes and performs its elastic return function of the push button 300 towards its high rest position.
- the bearing faces 132 and 232 as well as the two complementary annular surfaces 109 and 209 of the hooks 108 and 208 then remain respectively in mutual support without play and the two complementary sealing surfaces0 convex 103 and concave 203 are in leaktight support.
- the design according to the invention makes it possible to automatically carry out the fixing by a sealed connection of the section 102 of flexible membrane on the end piece 200.
- Variants 5 As a variant not shown and without departing from the scope of the invention, it is possible to reverse the orientation of the two hooks 108 and 208.
- the assembly then successively comprises the rigid central chimney 202, the second hook 208 which is oriented outwards, then the section 102 of flexible tubular wall with its first hook 108 which is oriented inwards.
- the second hook 208 which is oriented outwards and which is arranged at the upper end of the rigid side skirt 225 is then surrounded by the first hook 208.
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2008344A FR3113253B1 (fr) | 2020-08-06 | 2020-08-06 | Assemblage d’une membrane souple de pompage et d’un embout rigide d’une pompe d’un systeme de distribution sans air d’un produit liquide ou pateux |
| PCT/FR2021/050979 WO2022029374A1 (fr) | 2020-08-06 | 2021-05-31 | Assemblage etanche d'une membrane souple de pompage et d'un embout rigide d'une pompe d'un systeme de distribution sans air d'un produit liquide ou pateux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4192623A1 true EP4192623A1 (fr) | 2023-06-14 |
Family
ID=73013726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21734418.3A Pending EP4192623A1 (fr) | 2020-08-06 | 2021-05-31 | Assemblage etanche d'une membrane souple de pompage et d'un embout rigide d'une pompe d'un systeme de distribution sans air d'un produit liquide ou pateux |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240024903A1 (fr) |
| EP (1) | EP4192623A1 (fr) |
| FR (1) | FR3113253B1 (fr) |
| WO (1) | WO2022029374A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3620897A1 (de) * | 1986-06-21 | 1987-12-23 | Mega Prod Verpack Marketing | Spender |
| FR2671330B1 (fr) * | 1991-01-08 | 1994-10-07 | Valois | Distributeur manuel portatif a pompe pour creme et cosmetique. |
| WO2010131042A1 (fr) * | 2009-05-14 | 2010-11-18 | Leafgreen Limited | Clapet de pré-compression et dispositif de fluide comprenant un tel clapet |
| FR2948344B1 (fr) * | 2009-07-27 | 2011-09-02 | Valois Sas | Systeme de fixation demontable. |
| KR101378369B1 (ko) * | 2011-06-14 | 2014-03-27 | (주)연우 | 펌핑식 화장품용기 |
| DE102014200867A1 (de) * | 2014-01-17 | 2015-08-06 | Aptar Radolfzell Gmbh | Spender für Flüssigkeiten |
| FR3041410A1 (fr) | 2015-09-22 | 2017-03-24 | Cep Tubes | Systeme de distribution sans air avec pompe |
| FR3090416B1 (fr) * | 2018-12-24 | 2024-07-12 | Albea Services | Pompe pour flacon de produit cosmétique dotée de moyens de purge d’air |
-
2020
- 2020-08-06 FR FR2008344A patent/FR3113253B1/fr active Active
-
2021
- 2021-05-31 WO PCT/FR2021/050979 patent/WO2022029374A1/fr not_active Ceased
- 2021-05-31 US US18/040,795 patent/US20240024903A1/en not_active Abandoned
- 2021-05-31 EP EP21734418.3A patent/EP4192623A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20240024903A1 (en) | 2024-01-25 |
| FR3113253B1 (fr) | 2023-05-05 |
| FR3113253A1 (fr) | 2022-02-11 |
| WO2022029374A1 (fr) | 2022-02-10 |
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