专利摘要:
The invention relates to a cup / valve assembly for an aerosol container comprising a cup, a valve body, a rod, a spring, an inner seal and means for retaining the stem in the container. valve body. The cup has in its center an opening (23) through which the stem protrudes. The rod comprises a bead on its outer cylindrical face and an inner duct which has an upper opening at its upper end and at least one lateral orifice at its lower end, the side orifices being placed between the bead and the opening top of the inner duct. The valve body has a cylindrical portion with an open at its upper end defining a summit ridge. According to the invention, the valve body is fixed to the opening (23) of the cup by fastening means (36) leaving free the opening of the cylindrical part, - the part of the rod going from bead up to the end opposite to the inner conduit is located inside the valve body, bearing against the spring, - the means for retaining the rod in the valve body are constituted by a retaining ring (5) which loosely surrounds the portion of the shank between the one or more lateral openings and the upper opening of the conduit, the outer diameter of the retaining ring being greater than the diameter of the opening (23) and the inner diameter of the retaining ring being smaller than the diameter of the bead of the rod, the retaining ring being fixed by means of attachment to the cup, the inner seal (13) being interposed between the retaining ring (5) and the summit ridge of the cylindrical part drique of the valve body so that, in the closed position of the valve, the inner seal (13) encloses the rod at the level of the lateral orifice (s) by blocking them and the spring pushes the rod by placing its bead in support against the seal (13).
公开号:FR3037571A1
申请号:FR1555497
申请日:2015-06-16
公开日:2016-12-23
发明作者:Herve Bodet;Bernard Borel
申请人:Lindal France SAS;
IPC主号:
专利说明:

[0001] The invention relates to a cup / valve assembly for an aerosol container, composed of a cup, a valve body, a rod, a spring, an inner seal and means for retaining the stem in the valve body. The cup having in its center an opening through which the stem protrudes. The stem comprises a bead on its outer cylindrical face and an inner conduit which has an upper opening at its upper end and at least one lateral orifice at its lower end, the side opening (s) being placed between the bead and the upper opening of the inner duct. The valve body has a cylindrical portion with an open at its upper end defining a summit ridge. The invention also relates to a method for manufacturing such a cup / valve assembly. The cup / valve assemblies as described in the preamble are well known. They are generally made of an aluminum cup which is dug on the upper crown of a valve body by enclosing a portion of the stem in the valve body. These sets are commonly used and pose the problem of recycling used aerosols. Indeed, the stem and the valve body are generally made of plastic, while the cup and the spring are metallic. The object of the invention is to simplify the recycling of such cup / valve assemblies. Another objective is to simplify their manufacture. These objectives are achieved according to the invention because - the valve body is fixed to the opening of the cup by fastening means leaving free the entire opening of the cylindrical part, - the part of the rod from the bead to the end opposite the inner conduit is located inside the valve body, bearing against the spring, the means for retaining the rod in the valve body are constituted by a ring retaining ring which surrounds, without tightening, the portion of the rod located between the one or more lateral openings and the upper opening of the conduit, the outer diameter of the retaining ring being greater than the diameter of the opening and the inner diameter of the retaining ring being smaller than the diameter of the bead of the shank, the retaining ring being fixed by fastening means to the cup, the inner seal being interposed between the retaining ring and the the top edge of the cylindrical portion of the valve body so that, in the closed position of the valve, the inner seal encloses the rod at the level or the lateral orifices by blocking them and that the spring pushes the rod by placing its bead bearing against the seal. By fixing the valve body on the cup so as to leave the entire opening free, it is possible to insert the rod, including its bead, in the valve body after fixing the valve body on the cup. The retaining means of the rod are therefore not constituted by the cup, as is traditionally done, but by a retaining ring, separate from the cup, which is fixed on the cup after insertion of the rod into the valve body. .
[0002] To prevent the retaining ring from protruding above the cup, it is preferable that said ring is placed in a recess provided on the upper face of the cup and which surrounds the opening. It will be possible to choose the height of the recess and that of the retaining ring so that, after fixation of the latter, its upper face is flush with the upper face of the cup or is set back from the latter. The bottom of the recess can form a radial annular surface against which bears the retaining ring. In a first embodiment, the means for fixing the valve body to the opening of the cup are constituted by bridges placed between the outer face of the cylindrical portion of the valve body and the opening of the cup, said means fixing the valve body being designed such that the top edge of the cylindrical portion of the valve body is located lower than the interface between the retaining ring and the cup at the opening of the cup. In another variant, the means for fixing the valve body to the opening of the cup are constituted by latching means for snapping the valve body onto the cup, the latching means being designed so that the The top edge of the cylindrical portion of the valve body is located lower than the interface between the retaining ring and the cup at the opening of the cup. In both variants, if the retaining ring is fixed in a recess, the apex edge is located lower than the bottom of the recess at the opening of the cup. A simple solution for fixing the retaining ring is to weld it onto the cup. For this, we can provide an extra material thickness on the retaining ring or on the cup to serve as a weld joint. The retaining ring may be provided with a crown on its lower face, preferably at its periphery, and the recess may be provided with an annular groove of dimensions corresponding to those of the ring of the retaining ring, a thickness of material that can be provided on the ring of the retaining ring or in the throat of the cup to serve as a seal. In order to fix a dip tube, a metering tank, anti-sag means or any other similar device, it may be useful to provide the valve body with a tubing placed in the extension of the cylindrical portion, the opposite the upper opening, a passage opening being provided to bring into contact the inside of the tubing and the inside of the cylindrical portion.
[0003] A pocket may be attached to the valve body. Similarly, it may be provided on the cup means for fixing it on the neck of a housing to form an aerosol container. In order to allow easy recycling of the cup / valve assembly, the cup, valve body, stem and / or retaining ring may be made of a thermoplastic material, the spring made of stainless steel or a thermoplastic material. . The invention also relates to a method for manufacturing a cup / valve assembly according to the invention. This process comprises the following steps: (a) preparing a cup / valve body unit by fixing, by means of fixing means, the valve body in the central opening of the cup so that the upper opening of the cylindrical portion remains free; (b) placing the seal on the portion of the rod located between the bead and the upper opening; (C) introducing the spring into the valve body; (d) introducing into the valve body the portion of the rod from the bead to the end opposite the upper opening, until it bears against the spring; (e) placing a retaining ring on the portion of the rod located between the upper opening of the conduit and the one or more side ports or between the top opening of the conduit and the seal if already mounted ; (f) lowering the retaining ring until it contacts the upper face of the cup by surrounding the opening and locking the inner seal between the retaining ring and the top ridge of the cylindrical portion of the valve body so that, in the closed position of the valve, the seal encloses the stem at the level of the lateral orifice (s) by blocking them and that the spring pushes the stem by placing its support bead against the seal; (g) attaching the retaining ring to the ring; the order of steps (a) to (e) not being fixed, except that step (d) is performed after step (c). To simplify the process, it is possible to provide: in step (a), to mold together in one piece the cup and the valve body, the valve body being connected to the cup preferably by bridges at the level of 10 the opening; or - in step (a), snap the valve body onto the cup by means of latching means. Likewise, it is preferable, in step (e), to mold together in one piece the rod and the retaining ring, the retaining ring being connected to the rod by bridges which can easily yield, the ring of retainer being located between the orifices and the upper opening of the inner conduit. Finally, it is preferable, in step (g), to fix the retaining ring on the cup by welding, a thickness of material that can be provided on the retaining ring or on the cup to serve as a solder joint. The invention is explained in more detail below with the help of the following figures: Figure 1 exploded sectional view of the various elements constituting the valve; Figure 2 is a sectional view of a cup / valve assembly according to the invention mounted on a housing for producing an aerosol container; Figure 3 sectional view of the valve before welding the retaining ring; Figure 4 sectional view of the valve after welding of the retaining ring; Figure 5 sectional view and perspective of the cup unit before assembly; Figure 6 sectional and perspective view of the rod unit before assembly. The valve of the invention is intended to be made of plastic in order to allow easier recycling of the aerosol container after use. It goes without saying that some parts can however be made in another material, for example metal.
[0004] The invention relates to a cup / valve assembly (1) composed, as shown in FIG. 1, of a cup unit (11) consisting of a cup (2) and a valve body (1). 3), - a rod unit (12) consisting of a rod (4) and a retaining ring (5) for fixing the rod in the valve body (3), - a seal internal sealing (13), and - a spring (14). These parts all have a certain symmetry of rotation about an axis (A) passing through the center of the rod (4) and schematically marked in Figure 1. The adjectives "radial" and "axial" refer to this axis . In addition, spatial references such as "above" or "below" refer to the position shown in the figures. It goes without saying that the cup / valve assembly of the invention can be used in other positions, including upside down, in which case what was described as "above" or "below" is would find in the opposite position. The cup unit (11) combines in one piece the cup (2) and the valve body (3). It would of course be possible to make this unit in the form of two separate parts assembled together by any appropriate means, for example by snapping.
[0005] The cup conventionally comprises a peripheral edge (21) to attach it to the neck of a housing (6) after interposing, if appropriate, an outer seal (22). The underside of the cup may be provided with reinforcing ribs (25). The cup has at its center an opening (23) which is surrounded, on the upper face of the cup, with an annular recess (24) concentric with the opening (23). The bottom of the annular recess forms a radial annular surface. In the embodiment shown here, the bottom of the annular recess has an annular groove. The valve body (3) is fixed to the cup at the opening (23). It consists essentially of a cylindrical element (31) open at the top and closed at the bottom by a radial partition wall (32). The cylindrical element is extended by a pipe (33) fixed to the radial wall. An opening (34) is made in the radial wall to contact the inside of the cylinder and the conduit located inside the tubing. L-shaped radial ribs (35) are placed in the bottom of the cylindrical member (31). The vertical branches of the L serve to guide the spring (14) while the horizontal branches serve as support. The 35 horizontal branches of the L are not touching. In the example presented, they stop at a distance from the orifice (34). The cylindrical element (31) is connected to the cup (2) by bridges 3037571 6 (36) made in the upper part of its outer face. These bridges are regularly distributed on the periphery of the cylindrical element and form slots projecting radially outwards and upwards. The upper part of these bridges is connected to the wall of the opening (23). On its top edge, the cylindrical member (31) has an annular rib (37) for sealing with the inner seal (13). The top of the annular rib (37) is located lower than the bottom of the recess (24) at the opening (23). However, it is possible that the bottom of the recess at the annular groove is at the same level, or even lower, than the top of the annular rib (37). It would also be possible to replace the bridges (36) by a continuous attachment.
[0006] The rod unit (12) consists of a rod (4) and a retaining ring (5). To simplify manufacture and assembly, it is preferable that the rod unit is made in one piece. For this, the retaining ring and the rod are molded together and connected by a few fragile bridges (51) which yield easily during assembly. It would of course be possible to manufacture the two elements separately. The stem (4), also known as stem, consists of a tubular element separated at its center by a radial wall (41) forming an upper conduit (42) and a lower conduit (43). One or more orifices (44) are formed in the bottom of the upper duct, near the radial wall (41) to bring the interior of this upper duct into contact with the cylindrical outer face of the rod. An annular bead (45) is formed on the cylindrical outer face of the rod, below the orifices (44). This bead (45) is flattened on the side of the orifices (44) so as to form a radial bearing surface (46). In the example presented here, the bead (45) is in the extension of the partition wall (41). The lower duct (43) has no function, and the portion of the tubular element below the radial partition (41) could be full. It serves as guide pin in the spring (14). An annular shoulder (47) is formed in the post which, in the mounted state, acts as a stop for the spring.
[0007] The retaining ring (5) is in the form of a round plate pierced at its center so as to form a passage (52). The outer diameter of the retaining ring is slightly smaller than the diameter of the recess (24), and in all cases greater than the diameter of the opening (23). The diameter of the passage (52) is slightly greater than the outer diameter of the wall of the upper conduit (42) of the rod. On its underside, it is possible to place an extra thickness of annular material (53) to serve as a weld joint during assembly. In the example presented here, the seal is placed on a ring 3037571 7 placed at the periphery of the lower face of the retaining ring. This ring penetrates into the annular groove formed in the recess (24) of the cup. If the retaining ring is not provided with such a ring, it is not necessary to provide annular groove in the recess. The bridges (51) which connect before assembly the rod and the retaining ring 5 are located between the orifices (44) and the top of the rod, for example at about mid-distance. The inner seal (13) is an annular flat seal whose outer diameter is slightly less than or equal to the diameter of the opening (23) at the junction between the cup and the valve body, and greater than the diameter of the seal. annular rib (37) at the top of the valve body. Its inside diameter is equal to or slightly less than the diameter of the rod at the openings (44). When assembling the cup / valve assembly, a spring (14) is introduced into the valve body (3) so that it is in the space defined by the vertical branches 15 of the ribs (35) , resting on the horizontal branches of these ribs. Meanwhile, the inner seal (13) is threaded onto the lower portion of the post pin until it is passed over the bead (45). For this, the underside of the bead is inclined to facilitate the passage of the seal. The latter is then between the bead (45) and the retaining ring (5) always attached to the upper part of the rod.
[0008] The stem / retaining ring unit provided with the seal is then introduced into the valve body until the lower part of the rod penetrates into the spring and the upper end thereof comes into contact with the valve. annular shoulder (47) of the lower part of the rod. This situation is shown in Figure 3.
[0009] The retaining ring is then pushed down and the bridges (51) which connected to the rod (4) yield. The ring is brought into contact with the cup. It takes place in the recess (24) with its extra material thickness (53) resting against the annular radial surface forming the bottom of the recess (24), if any, in the annular groove when there is one as is the case in this example. On going down, the retaining ring pushes down the gasket (13) which collapses against the annular rib (37) formed on the summit ridge of the cylindrical element (31) of the valve body. . The seal is thus wedged between the lower face of the retaining ring and firstly the radial bearing surface (46) of the bead and secondly the annular rib (37) of the valve body. It is then possible to weld the retaining ring on the cup, for example by ultrasound. This is the situation shown in FIG. 4. In this position, the rod is subjected to the pressure of the spring (14) which tends to push it upwards, but it is retained by its bead (45) which is in abutment against the seal, itself bearing against the retaining ring (5). The cup / valve assembly is ready to be mounted on a housing to form an aerosol container (see Figure 2).
[0010] A flexible bag could be attached to the valve body (3) to form a pocket valve. For this, we can provide two opposite fins on the valve body to facilitate the welding of the bag. Due to the crushing of the seal at the annular rib (37) at the top of the valve body, the interior of the valve body is isolated from the space surrounding the valve body, i.e. say the space between the housing and the flexible pocket. The different elements are preferably made of a plastic material. For example, one may choose a thermoplastic material for the cup unit and for the rod unit and stainless steel or a thermoplastic material for the spring. The housing should be of a material compatible with that of the cup if the cup / valve assembly is to be welded thereto. For example, PET will be chosen. The advantage of the cup / valve assembly of the invention lies in the fact that all the parts can be made of plastic, including the spring, which facilitates the recycling of the aerosol container after use. In addition, by molding in one piece on the one hand the cup unit and on the other hand the rod unit, the number of parts is considerably reduced, which allows a saving of space during storage makes it possible to reduce assembly costs.
[0011] 25 List of references: 1 Cup / valve assembly 11 Cup unit 12 Rod unit 13 Inner seal 30 14 Spring 2 Cup 21 Peripheral edge 22 Outer seal 23 Opening 35 24 Hole 25 Reinforcing ribs 3037571 3 9 Valve body 31 Cylindrical element 32 Radial diaphragm wall 33 Manifold 5 34 Through opening 35 Radial ribs 36 Bridges 37 Annular rib 4 Rod 10 41 Radial wall 42 Upper inner duct 43 Lower inner duct 44 Holes 45 Annular bead 15 46 Surface area radial support 47 Ring shoulder 5 Retaining ring 51 Bridges 52 Passage 20 53 Material allowance 6 Aerosol container
权利要求:
Claims (16)
[0001]
REVENDICATIONS1. Cup / valve assembly (1) for an aerosol container, consisting of a cup (2), a valve body (3), a rod (4), a spring (14), a seal interior (13) and means for retaining the rod (4) in the valve body (3), the cup (2) having in its center an opening (23) through which the rod protrudes, the rod (4) comprising a bead (45) on its outer cylindrical face and an inner conduit (42) having an upper opening at its upper end and at least one lateral opening (44) at its lower end, the one or more lateral openings (44). being placed between the bead and the upper opening of the inner conduit (42), the valve body having a cylindrical portion (31) provided with an open at its upper end defining a top ridge, characterized in that - the body of valve (3) is fixed to the opening (23) of the cup by fastening means (36) leaving free the opening of the cylindrical portion (31), - the portion of the rod from the bead (45) to the end opposite the inner conduit is located inside the valve body (3), bearing against the spring (14), - the means for retaining the rod in the valve body are constituted by a retaining ring (5) which surrounds, without tightening, the portion of the rod located between the lateral orifice (s) (44) and the upper opening of the conduit (42), the outer diameter of the retaining ring being greater than the diameter of the opening (23) and the inside diameter of the retaining ring being smaller than the diameter of the bead (45) of the rod, the retaining ring being fixed by fixing means to the cup (2), the inner seal (13) being interposed between the retaining ring (5) and the top edge of the cylindrical part (31) of the valve body so that, in the closed position of the valve, the inner seal (13) encloses the a rod at the one or more lateral openings (44) by blocking them and that the spring pushes the rod by placing its bead (45) bearing against the seal (13).
[0002]
2. Set cup / valve according to the preceding claim, characterized in that the retaining ring (5) is placed in a recess (24) provided on the upper face of the cup (2) and which surrounds the opening (23) , the height of the recess (24) and the height of the retaining ring (5) can be chosen so that after attachment of the latter, its upper face is flush with the upper face of the cup or is set back from that -this. 3037571 11
[0003]
3. cup / valve assembly according to the preceding claim, characterized in that the bottom of the recess (24) forms a radial annular surface against which bears the retaining ring (5). 5
[0004]
4. Cup / valve assembly according to one of the preceding claims, characterized in that the means for attaching the valve body (3) to the opening (23) of the cup (2) are constituted by bridges (36) placed between the outer face of the cylindrical portion (31) of the valve body and the opening (23) of the cup, said fastening means of the valve body being designed such that the top edge of the cylindrical portion (31) of the valve body is located lower than the interface between the retaining ring (5) and the cup (2) at the opening (23) of the cup.
[0005]
5. Set cup / valve according to one of claims 1 to 3, characterized in that the means for attaching the valve body (3) to the opening (23) of the cup (2) are constituted by means detent for engaging the valve body on the cup, the detent means being so designed that the top edge of the cylindrical portion (31) of the valve body is located lower than the interface between the ring retainer (5) and the cup (2) at the opening (23) of the cup. 20
[0006]
6. Cup / valve assembly according to one of the preceding claims, characterized in that the retaining ring (5) is fixed to the cup (2) by welding, a thickness of material (53) can be provided on the ring of retainer or on the cup (2) to serve as a weld joint. 25
[0007]
7. Set cup / valve according to the preceding claim, characterized in that the retaining ring (5) is provided with a ring on its lower face, preferably at its periphery, and the recess (24) is provided with an annular groove with dimensions corresponding to those of the ring of the retaining ring, a thickness of material (53) can be provided on the ring of the retaining ring or in the groove of the cup (2) to serve as a seal Welding.
[0008]
8. cup / valve assembly according to one of the preceding claims, characterized in that the valve body (3) is provided with a pipe (33) placed in the extension of the cylindrical portion (31), the opposite the upper opening, a passage opening (34) being provided to contact the inside of the tubing and the inside of the cylindrical portion (31). 3037571 12
[0009]
9. Cup / valve assembly according to one of the preceding claims, characterized in that a pocket is fixed on the valve body. 5
[0010]
10. Cup / valve assembly according to one of the preceding claims, characterized in that the cup is provided with means for fixing it on the neck of a housing to form an aerosol container.
[0011]
11. Cup / valve assembly according to one of the preceding claims, characterized in that the cup and / or the valve body and / or the rod and / or the retaining ring are made of a thermoplastic material, the spring is made of stainless steel or thermoplastic material.
[0012]
12. A method for manufacturing a cup / valve assembly comprising a cup (2), a valve body (3), a rod (4), a spring (14), a seal interior (13) and means for retaining the rod (4) in the valve body (3), the rod (4) comprising a bead (45) on its outer cylindrical face and an inner conduit (42) having a an upper opening at its upper end and at least one lateral opening (44) at its lower end, the one or more lateral openings (44) being placed between the bead and the upper opening of the inner conduit (42), the valve body having a cylindrical portion (31) provided with an open at its upper end to admit at least a portion of the stem from the bead (45) and to the lower end opposite the inner conduit (42), characterized by the following steps: (a) preparing a cup / valve body unit by fixing, at using fastening means (36), the valve body (3) in the central opening (23) of the cup so that the upper opening of the cylindrical portion (31) remains free; (b) placing the seal (13) on the portion of the rod (4) between the bead (45) and the top opening; (c) introducing the spring (14) into the valve body (3); (D) introducing into the valve body the portion of the shaft extending from the bead (45) to the end opposite the upper opening, until it bears against the spring; (e) placing a retaining ring (5) on the portion of the shank between the upper opening of the duct (42) and the one or more side openings (44) or between the upper opening of the duct (42) and the seal (13) if already mounted; (F) lowering the retaining ring until it contacts the upper face of the cup by surrounding the opening (23) and blocking the inner seal (13) between the retaining ring and the apex edge of the cylindrical portion (31) of the valve body so that, in the closed position of the valve, the seal 5 encloses the rod at or at the lateral openings (44) by blocking them and that the spring pushes the rod by placing its bead (45) bearing against the seal (13); (g) attaching the retaining ring (5) to the ring (2); the order of steps (a) to (e) not being fixed, except that step (d) is performed after step (c).
[0013]
13. Method according to the preceding claim, characterized in that, in step (a), the cup (2) and the valve body (3) are molded together in one piece, the valve body being connected to the cup preferably by bridges (36) at the opening (23). 15
[0014]
14. The method of claim 11, characterized in that, in step (a), the valve body (3) is snapped onto the cup (2) by means of latching means.
[0015]
15. Method according to one of claims 11 to 13, characterized in that, in step 20 (e), the rod (4) and the retaining ring (5) are molded together in one piece, the ring retaining means being connected to the rod by bridges (51) which can easily give way, the retaining ring (5) being located between the orifices (44) and the upper opening of the inner duct (42). 25
[0016]
16. Method according to one of claims 11 to 14, characterized in that, in step (g), the retaining ring (5) is fixed to the cup by welding, a thickness of material (53) can be provided on the retaining ring or on the cup (2) to serve as a weld joint.
类似技术:
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同族专利:
公开号 | 公开日
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引用文献:
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法律状态:
2016-06-18| PLFP| Fee payment|Year of fee payment: 2 |
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优先权:
申请号 | 申请日 | 专利标题
FR1555497A|FR3037571B1|2015-06-16|2015-06-16|PROCESS FOR MANUFACTURING AEROSOL VALVE AND AEROSOL VALVE|
FR1555497|2015-06-16|FR1555497A| FR3037571B1|2015-06-16|2015-06-16|PROCESS FOR MANUFACTURING AEROSOL VALVE AND AEROSOL VALVE|
PT167310804T| PT3310690T|2015-06-16|2016-06-13|Method for manufacturing an aerosol valve, and aerosol valve|
ES16731080T| ES2761632T3|2015-06-16|2016-06-13|Procedure for making an aerosol valve and aerosol valve|
MX2017016293A| MX2017016293A|2015-06-16|2016-06-13|Method for manufacturing an aerosol valve, and aerosol valve.|
PL16731080T| PL3310690T3|2015-06-16|2016-06-13|Method for manufacturing an aerosol valve, and aerosol valve|
US15/580,160| US10532881B2|2015-06-16|2016-06-13|Process for manufacturing an aerosol valve and aerosol valve|
EP16731080.4A| EP3310690B1|2015-06-16|2016-06-13|Method for manufacturing an aerosol valve, and aerosol valve|
PCT/EP2016/063537| WO2016202754A1|2015-06-16|2016-06-13|Method for manufacturing an aerosol valve, and aerosol valve|
CU2017000165A| CU20170165A7|2015-06-16|2016-06-13|PROCEDURE FOR MANUFACTURING AN AEROSOL VALVE AND AEROSOL VALVE|
CA2988053A| CA2988053C|2015-06-16|2016-06-13|Method for manufacturing an aerosol valve, and aerosol valve|
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