Source bottle and refillable dispenser

Abstract

The invention relates to a source bottle (S) intended to refill a refillable dispenser (N) comprising a refillable tank (R) and a filling and venting system (R5) connected to the refillable tank (R), the source bottle (S) comprising a source tank (S1) and a pump (S2) defining a movement axis and a pump chamber (C), the maximum dose of which is advantageously substantially equal to the maximum volume of the refillable tank (R), characterised in that the pump (S2) comprises or includes a cross-flow transfer member (St) capable of being connected to the filling and venting system (R5) of the refillable dispenser (N) to inject fluid product from the pump chamber (C) into the refillable tank (R) and discharge the air from the refillable tank (R) into the source tank (S1).

Description

[0001] Refillable source bottle and dispenser

[0002] The present invention relates to a source bottle intended to refill a refillable fluid dispenser, as well as a dispensing assembly comprising a source bottle and a refillable dispenser. The invention also relates to a refillable dispenser capable of being filled with the source bottle. The preferred field of application of the present invention is that of perfumery, cosmetics or pharmacy. This type of refillable dispenser is often referred to as a "nomadic" dispenser. It generally has a low-capacity reservoir of around 10 ml at most.

[0003] In the prior art, document EP2977109 is known, which describes a source bottle / refillable dispenser assembly, the source bottle of which comprises a pump which is provided with a return valve, making it possible to discharge part of the contents of the pump chamber directly into the source reservoir. On the other hand, the refillable dispenser comprises a reservoir which is provided with a vent valve, which evacuates the air from the reservoir directly to the outside, as fluid product is injected by the pump from the source bottle into the reservoir of the refillable dispenser. In this document, it is not explained how and when the return valve opens when the reservoir of the refillable dispenser is full. A priori, nothing prevents the fluid product injected into the reservoir of the refillable dispenser from leaking through the vent valve. This leads to soiling of the refillable dispenser, which is not acceptable.

[0004] Document EP3310491 is also known, which describes a filling interface to be mounted between two bottles, the interface comprising, on the one hand, at least one liquid passage arranged between the two bottles for transferring the liquid under pressure, from the first bottle to the second inverted bottle through an open venting orifice of the pump of said second bottle and, on the other hand, at least one air passage for evacuating the air contained in the second inverted bottle to the outside of said bottle. The disadvantage with this interface is that at the end of filling of the second inverted bottle, the fluid product leaks through the air evacuation passage. This is why the interface is provided with a part made of absorbent material, such as a ring placed around the structure of the interface, at the outlet of the air evacuation passage, in order to absorb any flow of liquid that may occur after all the air in the second bottle has been evacuated to the outside.Thus, the interface is surrounded by a ring impregnated with fluid product, which is not acceptable.

[0005] The present invention aims to overcome the aforementioned drawbacks of the prior art by defining a source bottle / refillable dispenser assembly, which allows the refillable dispenser to be filled and its air to be evacuated without risking fluid leakage. The fluid injected by the pump of the source bottle into the reservoir of the refillable dispenser evacuates the air it contains, without discharging any excess or overflow of fluid from the refillable dispenser, at the risk of contaminating it or the source bottle. The cleanliness of the refillable dispenser and the source bottle is an essential objective of the present invention.

[0006] To achieve this aim, the present invention firstly proposes a source bottle intended to refill a refillable dispenser comprising a refillable reservoir and a filling and venting system connected to the refillable reservoir, the source bottle comprising a source reservoir and a pump defining a movement axis and a pump chamber, the maximum dose of which is advantageously greater than the maximum volume of the refillable reservoir, characterized in that the pump comprises or integrates a cross-flow transfer member capable of being connected to the filling and venting system of the refillable dispenser to inject fluid product from the pump chamber into the refillable reservoir and evacuate the air from the refillable reservoir into the source reservoir.

[0007] Thus, the air from the refillable tank is evacuated into the source tank through the refillable dispenser's filling and venting system and the cross-flow transfer device integrated into the source bottle pump. Therefore, even if excess or overflow fluid is injected by the source bottle pump into the refillable tank, it will be evacuated into the source tank by the same path as the air from the refillable tank. Therefore, there is no longer any risk of fluid leakage at the end of filling.

[0008] Unlike the system of document EP3310491, which comprises an interface to be attached between two bottles, the cross-flow transfer member of the invention is an integral part of the source bottle, and more particularly of the pump of the source bottle. Once the filling operation is complete, the cross-flow transfer member of the invention cannot be removed from the pump, as is the case with the interface of document EP3310491.

[0009] Advantageously, the cross-flow transfer member may comprise a hollow vent rod, which is movable between a rest position and a depressed position, the hollow vent rod defining an external end for connection with the filling and venting system and an internal end for communication with the source reservoir, the hollow vent rod passing through the pump chamber, advantageously, axially and centered, its internal end being closed in the rest position and communicating with the source reservoir in the depressed position. This vent rod therefore makes it possible to pass the air from the filling and venting system of the refillable dispenser directly into the source reservoir, without passing into the pump chamber of the source bottle. It can be said that this vent rod bypasses the pump chamber, but by passing through it.Thus, the air path does not bypass the pump, but passes through it, preferably axially, without mixing with the fluid product in the pump chamber.

[0010] Advantageously, the cross-flow transfer member may comprise a sleeve which defines an external flange for connection with the filling and venting system and an internal edge for communication with the pump chamber, the hollow venting rod passing through the sleeve, a return spring acting advantageously between the sleeve and the hollow venting rod to urge the hollow venting rod into the rest position, the internal edge being closed by the hollow venting rod in the rest position and communicating with the pump chamber in the depressed position. This sleeve is similar to a conventional valve rod, the internal conduit of which allows the fluid product to be routed out of the pump chamber, downstream of the outlet valve.In the present invention, it is as if the internal conduit of this conventional valve stem were crossed by a hollow venting stem, so that the path of the fluid product is around the venting stem. The fluid product rises through the fixed sleeve towards the filling and venting system, while the air descends through the venting stem directly into the source reservoir.

[0011] According to another characteristic of the source bottle, the pump chamber may comprise a bellows defining a fixed base forming a fluid product inlet and a passage for the hollow venting rod, the bellows also defining a deformable membrane and an anchoring ring, the pump chamber also comprising a cover mounted on the anchoring ring, the cross-flow transfer member being integral with the cover, the sleeve being advantageously made in one piece with the cover. The sleeve is integral in movement with the cover, which is axially movable back and forth and the hollow venting rod is axially movable back and forth in the sleeve. The venting rod, in the rest position, is closed at its internal end by the passage formed in the fixed base of the bellows. In the pushed-in position, the internal end of the venting rod projects out of the passage and extends into the source reservoir.

[0012] In other words, the sleeve and the vent rod together form the outlet valve of the pump chamber, which opens by the axial displacement of the vent rod relative to the sleeve. Furthermore, the vent rod and the pump base form an air outlet valve, which opens by the axial displacement of the vent rod relative to the pump base. The air and fluid product flows are not only crossed, but also concentric, and advantageously axially centered.

[0013] The present invention also defines a dispensing assembly comprising a source bottle as defined above, and a refillable dispenser comprising a dispensing member, such as a pump or a valve, provided with a dispensing head, a refillable reservoir and a filling and venting system connected to the refillable reservoir, characterized in that the filling and venting system comprises a fluid product filling valve and an air venting valve, the two valves being actuable manually and simultaneously when connecting the refillable dispenser to the source bottle. Since the connection is made by a pressed axial contact, the actuation of the valves is also axial.

[0014] According to an interesting aspect, the filling and venting system may comprise a venting tube connected to the air vent valve and extending into the refillable reservoir towards the dispensing member. Thus, the free end of the venting tube is located at the top of the refillable reservoir, so that the air is evacuated at the top of the reservoir. When the fluid injected into the refillable reservoir reaches the free end of the venting tube, the filling is complete. In practice, there may be an excess of injected fluid, but this will be directly evacuated through the venting tube, the air vent valve and the hollow venting rod to return to the source reservoir. This guarantees both ideal filling and a quantity of air remaining in the refillable reservoir, which is sufficient to absorb pressure and temperature variations.

[0015] Advantageously, the air vent valve may be arranged axially centrally and the fluid product filling valve extends around the air vent valve. This configuration corresponds to that of the cross-flow transfer member, with the hollow vent rod which is surrounded by the sleeve. Preferably, the filling and venting system may comprise an axial connection well in communication with the air vent valve and a concentric sliding sleeve in communication with the fluid product filling valve. The external connection end of the hollow vent rod is adapted to come into axial pressed contact with the axial connection well, so as to move both the well and the rod. Furthermore, the external connection flange of the sleeve is adapted to come into sealed sliding contact with the concentric sliding sleeve.

[0016] According to a practical embodiment, the filling and venting system may comprise a moving valve part forming the axial connection well, an axial moving venting valve member and a peripheral moving filling valve member, the filling and venting system also comprising a fixed seat part forming an axial venting valve seat cooperating with the axial moving venting valve member and a peripheral filling valve seat cooperating with the peripheral moving filling valve member. The axial connection well is thus axially movable relative to the concentric sliding sleeve, which is fixed.

[0017] The present invention also defines a refillable dispenser comprising a dispensing member, such as a pump or a valve, provided with a dispensing head, a refillable reservoir and a filling and venting system connected to the refillable reservoir, the filling and venting system comprising a fluid product filling valve and an air venting valve, the two valves being manually and simultaneously actuable when connecting the refillable dispenser to the source bottle, characterized in that the filling and venting system comprises a venting tube connected to the air venting valve and extending into the refillable reservoir towards the dispensing member.This refillable dispenser, with its air vent valve provided with a vent tube, is based on a common inventive concept with the source bottle implementing a pump provided with a cross-flow transfer member to evacuate the air from the refillable reservoir into the source reservoir. Indeed, the air can only be evacuated if the air from the refillable reservoir is taken near the dispensing member. Without this vent tube, the air cannot be evacuated, making filling also impossible and the source bottle of the invention unusable.

[0018] The invention will now be described in greater detail, with reference to the attached drawings, giving by way of non-limiting example, an embodiment of the invention.

[0019] In the figures:

[0020] Figure 1 is a vertical sectional view through an assembly of the invention, comprising a source bottle and a refillable dispenser ready to be mounted on the source bottle,

[0021] Figure 2 is a view similar to Figure 1 with the refillable dispenser mounted on the source bottle,

[0022] Figure 3 is an enlarged view of Figure 1, showing the upper portion of the source bottle and the lower portion of the refillable dispenser ready to be mounted on the source bottle,

[0023] Figure 4 is an enlarged view of Figure 2, showing the upper portion of the source bottle engaged with the lower portion of the refillable dispenser,

[0024] Figure 5 is a further greatly enlarged view of Figure 3, and

[0025] Figure 6 is a further greatly enlarged view of Figure 4.

[0026] We will first refer to figures 1 and 2 to describe in a general manner the structures of the source bottle S and the refillable or “nomadic” dispenser N.

[0027] The refillable dispenser N may be of a completely conventional type, except for its filling and venting system R5, which will be described in more detail with reference to Figures 5 to 6. Thus, the refillable or "nomadic" dispenser N comprises a refillable reservoir R forming at its upper end a neck R1 and at its lower end a receiving housing R2 for the filling and venting system R5. In a completely conventional manner, the neck R1 of the reservoir R is provided with a dispensing head T, which comprises a dispensing member, in particular a pump P, topped with a push button B. The pump P is provided with a dip tube Tp which extends into the reservoir R up to the level of its bottom where the filling and venting system R5 is located. For fixing to the neck R1, a fixing ring F is provided, which may for example be a crimping ring.

[0028] By pressing the push button B, fluid product is pressurized in the pump P, the outlet valve of which will open to allow the fluid product to travel to the push button B, which is advantageously provided with a nozzle for spraying. As soon as the push button B is released, fluid product from the reservoir R is sucked through the dip tube Tp into the pump chamber of the pump P. Such an operating cycle is quite classic for a dispensing head in the fields of perfumery, cosmetics or even pharmacy.

[0029] Without going into the structural details of the filling and venting system R5, it can still be seen that this system R5 comprises a venting tube 66 which extends into the reservoir R up to the vicinity of the pump P or the neck R1. In other words, the free end of the venting tube 66 is located close to the connection of the dip tube Tp to the pump P.

[0030] The source bottle S firstly comprises a source reservoir S1 which can have any shape and be made of any suitable material. The source reservoir S1 forms a neck S11 on which is mounted a pump S2, which is the heart of the invention with the filling and venting system R5 of the refillable dispenser N.

[0031] Without going into too much detail, the pump S2 comprises a pump chamber C, which is essentially delimited by a bellows 1 associated with a cover 2. According to the invention, this pump chamber C is further provided with a cross-flow transfer member St, which is essentially constituted by a sleeve 22 and a hollow venting rod 4, as will be seen below. Very briefly, the rod 4 comprises an external connection end 41 intended to come into pressed contact with the refillable reservoir N and an internal communication end 42, which is either closed in the rest position or in communication with the source reservoir S1 in the actuated or depressed position. Indeed, it can be noted in Figure 1, which corresponds to the rest position of the pump S2, that the internal communication end 42 is located at the bottom of the pump S2.On the other hand, in Figure 2 corresponding to the actuated or depressed position of the pump S2, it can be seen that the internal communication end 41 projects widely inside the source reservoir S1, so that communication is established between the reservoir S1 and the inside of the hollow venting rod. It can also be seen in Figure 2 that the volume of the pump chamber C is reduced compared to that of Figure 1. The actuation of the pump is generated by the downward axial support of the “nomadic” distributor N on the pump S2 and, more particularly on the external end of the connection 41 of the hollow venting rod 4, which is displaced axially relative to the sleeve 22.

[0032] Referring to Figure 3, we can see the pump S2 at rest, as well as the filling and venting system R5 of the “nomadic” distributor N.

[0033] Concerning the pump S2, the bellows 1 comprises a fixed and rigid base 11, which defines an annular fixing heel 111, a passage 112 and a fluid product inlet 113. The passage 112 is centered on the axis X of the pump, while the inlet 113 is offset, on the right in Figure 3. The passage 112 allows the pump chamber C to communicate directly with the source reservoir S1. The bellows 1 also comprises a deformable membrane 12, which forms annular folds. The crushing of the membrane 12 takes place along the axis X. At the end of this membrane 12, the bellows 1 forms an anchoring crown 13, which is rigid, just like the fixing heel 111. The bellows 1 can be made in a single piece from a flexible material, such as an elastomer.

[0034] The cover 2 comes into sealing engagement with the anchor ring 13, so as to define the pump chamber C with the bellows 1. The cover 2 comprises an upper plate 21 and a peripheral skirt 23, which is substantially cylindrical. The cross-flow transfer member St is formed at the plate 21 of the cover 2. More precisely, the sleeve 22 is formed in a single piece with the plate 21. It comprises an external connecting flange 221 and an internal communicating edge 222. The internal edge 222 extends radially inwards so as to form an open bottom for the sleeve 22.

[0035] The hollow vent rod 4 extends along the X axis passing through the sleeve 22 and the pump chamber C. The external connecting end 41 projects slightly from the external connecting flange 221. Its internal communicating end 42 forms a lateral opening 421, which is located at the passage 112, so as to close it. The rod 4 also comprises a valve collar 44, which projects radially outwards, and which is located below the sleeve 22, so as to come into sealed contact with the internal communication edge 222. Thus, the valve collar 44 and the internal edge 222 together form an outlet valve for the pump chamber C. The rod 4 is held in this rest configuration, with the valve closed, by the action of a spring 24, which bears on the one hand on a shoulder 43 of the rod 4 and on the other hand on the internal edge 222.The action of this spring 24 presses the valve collar 44 in a sealed manner against the internal edge 222.

[0036] To hold the pump S2 on the neck S11 of the source reservoir S1, a fixing ring 3 is further provided, which comprises a screw-on skirt 31 in threaded engagement with the neck S11 of the source reservoir S1. The skirt 31 is also engaged with the fixing heel 111 of the bellows 1. This ring 3 also forms a wall 32 which extends above the neck S11 and which is formed with an opening for the engagement of the passage 112. This wall also forms a valve seat 33 for a ball 35, as well as a tube holder 34 in which is engaged a dip tube 36 which extends into the source reservoir S1 to near its bottom. The fluid product inlet 113 communicates directly with the space in which the ball 35 is confined. The seat 33 and the ball 35 together form a fluid product inlet valve for the pump chamber C. On the other hand, the ring 3 forms a cylindrical guide sleeve 37 around which the skirt 23 of the cover 2 is engaged.Additional shoulders can define the rest position of the S2 pump.

[0037] With reference to Figure 4, the pump S2 is seen in the actuated or depressed position. The pump is actuated by axial support of the refillable distributor N, in particular on the external connection end 41. It can be seen in Figure 4 that the membrane 12 is crushed and that the valve is open, since the valve collar 44 is now detached from the internal edge 222. The fluid product pressurized in the pump chamber C can thus escape through the open valve inside the sleeve 22. From there, it reaches the filling and venting system R5 of the “nomadic” distributor N, the structure and operation of which will be explained below. It can also be noted that the internal end 42 of the rod 4 has been moved from the passage 112 to the interior of the source reservoir S1. Its lateral opening 421 communicates directly with the upper part of the source reservoir S1 which is filled with air.Thus, the air trapped in the reservoir R of the refillable dispenser N can be evacuated through the venting tube 66, the filling and venting system R5, in the hollow venting tube 4 to reach the upper part filled with air of the source reservoir S1. The opening of the outlet valve of the pump chamber C and the communication of the lateral opening 421 with the source reservoir S1 is obtained by two simultaneous and nested movements, namely the axial movement of the hollow rod 4 relative to the sleeve 22 and the axial movement of the sleeve 22 by crushing the flexible membrane 12. The air passes through the pump chamber C and the fluid product is evacuated from the chamber C through the sleeve 22 around the rod 4, at the level of its part located inside the sleeve 22.

[0038] When the pressing force on the refillable dispenser N is released, the return spring 24 brings the valve collar 44 back into sealing contact with the internal edge 222 and the elasticity of the flexible membrane 12 returns the cover 2 to the rest position shown in Figure 3. In doing so, a vacuum is created in the pump chamber C, which has the effect of sucking fluid through the dip tube 36 and the inlet valve 33, 35 forced into the open state.

[0039] In Figures 5 and 6, we see in more detail the filling and venting system R5 of the refillable dispenser N, respectively in the rest position in Figure 5 and in the open or actuated position in Figure 6.

[0040] As mentioned above, the filling and venting system R5 is received in a fixed and sealed manner inside the receiving housing R2 formed at the bottom of the reservoir R of the refillable dispenser N.

[0041] This filling and venting system R5 firstly comprises a body part 5, which is received in a fixed and sealed manner inside the receiving housing R2. This body part 5 comprises a sealed mounting ring 51 engaged with the housing R2 and a sliding sleeve 53, which is accessible from the outside. The body part 5 also supports an annular seal 52, just above the sleeve 53 inside the sealed mounting ring 51.

[0042] The system R5 also comprises a bell 6 which is fixedly and sealingly mounted inside the body part 5. This bell 6 comprises an outer casing 61, which is received inside the sealing mounting ring 51, so as to hold the annular seal 52 in place. The bell 6 also forms an axial tubing 62, which defines a sealing section 63 of reduced diameter and a passage section 64 of increased diameter. The sealing section 63 is arranged axially below the communication section 64. At the level where the casing 61 joins the tubing 62, several openings 65 are provided, which are arranged around the tubing 62.

[0043] The system R5 also comprises a moving valve part 7, which can move axially back and forth inside the body part 5 and the bell 6 against a return spring 8. This moving valve part 7 comprises an axial connection well 71, which is open downwards, towards the external connection end 41 of the source bottle S. The moving valve part 7 also forms an annular valve flange 72, which extends radially outwards around the well 71. This annular flange 72 comes into sealing contact against the annular seal 52 under the action of the spring 8. The part 7 also forms a stud 73 which defines a lateral opening 74 located at the sealing section 63 of the tubing 62, so as to seal it in a sealing manner. This position corresponds to that shown in Figure 5, namely the resting position.

[0044] The filling and venting system R5 thus forms a fluid product filling valve formed jointly by the annular flange 72 and the annular seal 52 and an air vent valve formed jointly by the stud 73 and the sealing section 63. These two valves can be actuated axially and simultaneously by moving the moving valve part 7 relative to the parts 5 and 6, which forms a fixed seat part. It can also be noted that the air vent valve is located on the axis X, while the filling valve is arranged concentrically or peripherally around the air vent valve. The same is true for the sliding sleeve 53, which is arranged concentrically around the axial connection well 71. In the rest position of FIG. 5, the bottom of the sleeve 53 and the bottom of the well 71 are substantially or perfectly aligned.The refillable dispenser N can thus be attached and centered on the external connection end 41 of the source bottle S.

[0045] In Figure 6, the refillable dispenser N is pressed downwards along the X axis against the source bottle S. It can be seen that the external connection end 41 is engaged with the axial connection well 71. On the other hand, the external connection flange 221 is engaged around the sliding sleeve 53, establishing a sliding radial contact between them. It should also be noted that the external connection end 41 has been moved downwards relative to the external connection flange 221 against the spring 24. On the other hand, the moving valve part 7 has been moved upwards relative to the parts 5 and 6 against the spring 8. The annular flange 72 is detached from the annular seal 52 and the radial opening 74 of the stud 73 is now located at the passage section 64 of increased diameter.Thus, the fluid product discharged through the sleeve 22 can flow inside the socket 53, the seal 52, the casing 61, then through the openings 65 to reach the interior of the reservoir R of the refillable dispenser N. On the other hand, the air from the reservoir R can be evacuated through the venting tube 66, the passage section 64, the lateral opening 74, the nipple 73, the axial connection well 41, the hollow venting rod 4, then finally through the lateral opening 421 of its internal end 42 to reach the upper part filled with air of the source reservoir S1.

[0046] Regarding the sequencing of the fluid product valves of the source bottle and the nomadic dispenser, it is preferable that the valve 44, 222 of the source bottle S opens slightly before the valve 52, 72 of the nomadic dispenser N, so as not to create excess pressure between the source bottle and the nomadic dispenser, which could lead to a leak of fluid product.

[0047] The structure and operation of the filling and venting system R5 being thus described, we can return to Figure 4. In this actuated or pressed position, fluid product has been injected into the reservoir R of the “nomadic” or refillable dispenser N. Advantageously, the dose of fluid product delivered by the pump S2 is greater than the useful volume of the reservoir R. In any case, it is practically inevitable that at the end of filling an excess or overflow of fluid product is evacuated through the venting tube 66, the filling and venting system R5 and the hollow venting rod 4. This poses absolutely no problem with the invention, given that this excess or overflow of fluid product travels in exactly the same way as the air in the reservoir R and returns to the source bottle S. Thus, there is no risk of fluid product leakage, due to an overflow of the reservoir R, as is the case in the aforementioned does of the art previous.

[0048] It should be noted that the implementation of the hollow venting rod 4 only makes sense if the filling and venting system R5 of the refillable dispenser N is provided with a venting tube 66, which extends towards the top of the reservoir. Indeed, without this venting tube 66, the fluid injected into the reservoir R would return directly to the source reservoir S1 through the hollow rod 4. Therefore, the hollow rod 4 and the venting tube 6 participate in the same common inventive concept. In addition, the venting tube 66 determines the quantity of fluid injected into the refillable reservoir, leaving a small quantity of air, which makes it possible to absorb pressure and temperature variations.

[0049] Without departing from the scope of the invention, it is possible to replace the bellows 1 with a conventional piston sliding in a cylindrical barrel. It is also possible to produce the filling and venting system R5 with another architecture, insofar as this uses two axially actuated valves and a venting tube 66.

Claims

Claims 1. Source bottle (S) intended to refill a refillable dispenser (N) comprising a refillable reservoir (R) and a filling and venting system (R5) connected to the refillable reservoir (R), the source bottle (S) comprising a source reservoir (S1) and a pump (S2) defining a movement axis (X) and a pump chamber (C), characterized in that the pump (S2) comprises a cross-flow transfer member (St) capable of being connected to the filling and venting system (R5) of the refillable dispenser (N) to inject fluid product from the pump chamber (C) into the refillable reservoir (R) and evacuate air from the refillable reservoir (R) into the source reservoir (S1).

2. Source bottle (S) according to claim 1, wherein the cross-flow transfer member (St) comprises a hollow vent rod (4), which is movable between a rest position and a depressed position, the hollow vent rod (4) defining an external connection end (41) with the filling and venting system (R5) and an internal communication end (42) with the source reservoir (S1), the hollow vent rod (4) passing through the pump chamber (C), advantageously, axially and centered, its internal end (42) being closed in the rest position and communicating with the source reservoir (S1) in the depressed position.

3. Source bottle (S) according to claim 2, in which the cross-flow transfer member (St) comprises a sleeve (22) which defines an external connection flange (221) with the filling and venting system (R5) and an internal communication edge (222) with the pump chamber (C), the rod hollow vent rod (4) passing through the sleeve (22), a return spring (24) acting advantageously between the sleeve (22) and the hollow vent rod (4) to urge the hollow vent rod (4) into the rest position, the internal communication edge (222) being closed by the hollow vent rod (4) in the rest position and communicating with the pump chamber (C) in the pushed-in position.

4. Source bottle (S) according to claim 3, in which the pump chamber (C) comprises a bellows (1) defining a fixed base (11) forming a fluid product inlet (113) and a passage (112) for the hollow venting rod (4), the bellows (1) also defining a deformable membrane (12) and an anchoring ring (13), the pump chamber (C) also comprising a cover (2) mounted on the anchoring ring (13), the cross-flow transfer member (St) being integral with the cover (2), the sleeve (22) being advantageously made in a single piece with the cover (2).

5. Dispensing assembly comprising: a. a source bottle (S) according to any one of the preceding claims, and b. a refillable dispenser (N) comprising a dispensing member (P), such as a pump or a valve, provided with a dispensing head (B), a refillable reservoir (R) and a filling and venting system (R5) connected to the refillable reservoir (R), characterized in that the filling and venting system (R5) comprises a fluid product filling valve (52, 72) and an air venting valve (62, 73), the two valves being actuable manually and simultaneously during the connection of the refillable dispenser (N) to the source bottle (S).

6. Dispensing assembly according to claim 5, in which the filling and venting system (R5) comprises a venting tube (66) connected to the air vent valve (62, 73) and extending into the refillable reservoir (R) towards the dispensing member (P).

7. Dispensing assembly according to claim 5 or 6, in which the air vent valve (62, 73) is arranged axially centrally and the fluid product filling valve (52, 72) extends around the air vent valve (62, 73).

8. Dispensing assembly according to any one of claims 5 to 7, in which the filling and venting system (R5) comprises an axial connection well (71) in communication with the air vent valve (62, 73) and a concentric sliding sleeve (53) in communication with the fluid product filling valve (52, 72).

9. Dispensing assembly according to claim 8, in which the filling and venting system (R5) comprises a movable valve part (7) forming the axial connection well (71), a movable axial venting valve member (73) and a movable peripheral filling valve member (72), the filling and venting system (R5) also comprising a fixed part (5, 6), forming an axial venting valve seat (63) cooperating with the axial movable venting valve member (73) and a peripheral filling valve seat (63) cooperating with the movable peripheral filling valve member (72).

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