EP2091836B1 - Fluid product dispenser - Google Patents

Abstract

A fluid dispenser having: a fluid reservoir, a fluid dispenser member having actuator rod (23) that is displaceable down and up along an axis X, a pusher (4; 4; 4″) that displaces the actuator rod (23), a dispenser endpiece (50) defining a dispenser orifice (51), and a displacement mechanism (6, 4; 6′, 7; 6″, 7, 4″) that displaces the endpiece (50) both in turning about the axis X and in radial translation, the radial distance between the endpiece and the axis X varying as the endpiece turns about the axis X, such that the endpiece is displaceable between an extended position remote from the axis X and a retracted position close to the axis X.

Description

The present invention relates to a fluid dispenser comprising a reservoir, a dispensing member such as a pump or a valve, a fixing ring for fixing the pump or the valve to an opening of the reservoir, an axially displaceable pusher for moving the actuating rod and a dispensing nozzle defining a dispensing orifice. Such fluid dispensers are commonly used in the fields of perfumery, cosmetics or even pharmacy, the document GB 1210875 describes a distributor of this type.

In the field of cosmetics, it is common to make dispensers with a protruding tip, for example in the form of a nozzle. The dispensing orifice is located at the free end of the nozzle or spout. With this protruding tip, it is easier for the user to recover the fluid, especially if it is a viscous product, such as a cream, a gel, an ointment, etc. The tip is generally fixedly mounted on the part to which it is connected. Conventionally, the tip is mounted on the pusher which is axially movable. Alternatively, it is also possible to mount the nozzle on a part which is independent of the pusher and which is fixed relative to the reservoir. To protect the tip, it is also known to provide a cap for masking the dispensing orifice, so that the fluid located at the dispensing orifice is no longer in contact with the nozzle. air. This prevents damage to the product at the dispensing orifice. However, this requires the user to remove and replace the cap each time the dispenser is used. There is also a risk of losing the hood.

The present invention aims to protect the dispensing nozzle by making it movable relative to the part from which it protrudes so as to retract inwardly.

To do this, the present invention provides a fluid dispenser comprising a fluid reservoir provided with an opening, a fluid dispenser member, such as a pump or a valve, said member comprising a body and an actuating rod displaceable back and forth along an axis X, a fixing ring for fixing the dispensing member on the opening of the reservoir, an axially displaceable pusher and-forth to move the actuating rod, and a dispensing nozzle defining a dispensing orifice, characterized in that it comprises displacement means able to move the tip both in rotation about the X axis and in radial translation, the radial distance separating the tip of the X axis varies as it rotates about this axis X so that the tip is movable between an advanced position remote from the X axis and a position The dispensing tip will retract radially inward as it is rotated. In other words, it is the rotation of the dispensing nozzle that induces a radial displacement of the nozzle inwardly or outwardly in the direction of rotation. The tip then travels a complex trajectory that is substantially helical.

According to an advantageous embodiment, the displacement means comprise an actuating member rotatable about the axis X, the endpiece being integral in rotation with this actuating member, and a cam track locked in rotation with respect to the reservoir, the radial distance separating the path to the X axis varying along the path, the tip being engaged with the cam path so that it follows the cam path when rotated by the cam actuating member. Thus, it is the rotation of the actuating member that forces the dispensing nozzle to move along the cam path, which is locked in rotation relative to the actuating member and relative to to the tank.

According to another embodiment, the cam path is formed by a cam member mounted on a hoop fixedly mounted relative to the tank, the cam member being locked in rotation relative to the hoop, but capable of moving axially , the pusher being engaged with the hoop by a second threaded cam path, the pusher being rotated by the actuating member, the pusher moving axially relative to the hoop and to the actuating member following the second threaded cam path when it is rotated by the actuating member, so that the rotation of the actuating member simultaneously causes the rotary axial displacement of the pusher and the rotational radial displacement of the tip. In this case, the pusher will move axially as it rotates and simultaneously the dispensing tip will move radially as it rotates. The rotation of the pusher and the tip is concomitant. Finally, there is a distributor whose rotation of the actuating member generates both the rise of the pusher and the outlet of the tip. By turning the actuating member in the opposite direction, the pusher will go down and simultaneously the tip will retract radially inwards. Advantageously, the pusher is axially displaceable so as to be entirely housed in the actuating member with the endpiece in the retracted position, which is hidden by the actuating member. In this way, not only the tip is retracted into its housing, but further the housing is closed by the actuator. According to another characteristic, the pusher comprises a body and a cap, the body forming a rotary housing for the endpiece, the cam path being disposed between the body and the cap. The cam path is thus trapped in the pusher while allowing relative rotation between the pusher and the cam path.

According to an advantageous characteristic of the invention, the tip is connected to the actuating rod by a flexible conduit. Indeed, the flexible conduit allows to connect with a considerable degree of freedom the end of the actuating rod of the dispensing member to the dispensing tip which is caused to move simultaneously in rotation and in radial translation. The end of the flexible conduit connected to the dispensing nozzle will have to travel a substantially or partially helical path. Therefore, the flexible conduit must have good deformability characteristics without creating wrinkles.

According to one embodiment, the cam path is axially movable back and forth with the pusher. Alternatively, the cam path is fixed relative to the reservoir. In this case, the dispensing nozzle is not mounted on the pusher. According to another aspect of the invention, the pusher forms the rotary actuating member, the tip being integral with the pusher in rotation. In this case, it is the pusher that the user will rotate to force the tip to follow the cam path. It can even be said that the pusher and the rotary actuator are merged. In a variant, the end piece is integral in rotation with the pusher, the pusher being rotated by the rotary actuating member which is a part distinct from the pusher, the actuating member being blocked in axial translation. In this case, the actuating member and the pusher are dissociated, the pusher being able to move axially with respect to the actuating member which remains static with respect to the reservoir. On the other hand, the actuating member can be rotated.

According to another interesting aspect of the invention, the tip is disposed in a rotary housing in which it is movable radially. The tip is trapped in this rotating housing, but is forced to slide inside this housing since it is forced to follow the cam path.

According to one embodiment of the invention, the cam path is formed by a cam member mounted on the fixing ring. The cam member is thus engaged with the fixing ring so as to lock it in rotation, the cam member may or may not move axially relative to the ring.

According to another aspect of the invention, the cam path is formed by a cam member comprising a plate provided with a rib defining the cam path, the tip comprising a groove in which the rib is slidably accommodated.

According to another interesting aspect of the invention, the pusher comprises a window through which the cam member is visible. Since the cam member is locked in rotation relative to the reservoir, it will remain static in rotation even if the pusher is rotatable. In this way, it is possible to provide the cam element with any inscription, such as for example a logo or a mark, which will not be rotated. The logo or the mark is thus always oriented correctly relative to the front face of the tank for example.

An interesting principle of the invention is to radially move the dispensing nozzle: for this, generates an actuating movement which will induce the radial displacement of the nozzle. This actuating movement may be a rotary movement or another movement, for example axial.

The invention will now be further described with reference to the accompanying drawings, giving by way of non-limiting examples, three embodiments of the invention.

• La figure 1 est une vue schématique en section transversale verticale à travers un distributeur de produit fluide selon un premier mode de réalisation de l'invention,
• Les figures 2a et 2b sont des vues schématiques en coupe transversale horizontale à travers le distributeur de la figure 1 en position avancée et en position rétractée de l'embout de distribution,
• La figure 3 est une vue en section transversale verticale à travers un distributeur de produit fluide selon un deuxième mode de réalisation de l'invention,
• La figure 4 est une vue en perspective éclatée d'un distributeur de produit fluide selon un troisième mode de réalisation de l'invention, et
• Les figures 5a et 5b sont des vues en coupe transversale verticale à travers le distributeur de la figure 4 en position de repos rétractée et en position d'utilisation avancée.

In the figures:

• The figure 1 is a schematic view in vertical cross section through a fluid dispenser according to a first embodiment of the invention,
• The Figures 2a and 2b are schematic views in horizontal cross-section through the distributor of the figure 1 in the advanced position and in the retracted position of the dispensing nozzle,
• The figure 3 is a vertical cross-sectional view through a fluid dispenser according to a second embodiment of the invention,
• The figure 4 is an exploded perspective view of a fluid dispenser according to a third embodiment of the invention, and
• The Figures 5a and 5b are cross-sectional vertical views through the distributor of the figure 4 in the retracted rest position and in the advanced use position.

We will first refer to figures 1 , 2a and 2b to describe in detail the structure and operation of a fluid dispenser according to a first embodiment of the invention. The dispenser comprises six constituent elements, namely a fluid reservoir 1, a dispensing member 2 which may be a pump or a valve, an attachment ring 3 for fixing the pump or the valve on the container, a pushbutton 4 on which the user can press to actuate the pump or the valve, a dispensing member 5 and a cam member 6. Most of these elements can be made by injection molding of plastic material.

The tank 1 comprises a tank body (not shown) which terminates at its upper end by a neck 12 defining an opening 11 communicating the interior of the tank with the outside. The neck 12 comprises an annular shoulder 13 which is oriented downwards. This shoulder is formed by an annular reinforcement which protrudes radially outwards. This is a quite classic design for a tank in the fields of perfumery, cosmetics or even pharmacy. The reservoir can be made of glass, plastic or metal.

The dispensing member 2 is here a pump. It comprises a pump body 21 forming a fastening flange 22 at its upper end. The pump also comprises an actuating rod which is axially displaceable back and forth along an axis X. In the rest position shown in FIG. figure 1 the actuating rod is extended as far as possible upwards by an internal spring (not shown) housed inside the body 21. The actuating rod can be pushed inside the body against the spring to reach a maximum depressed position. This is a pump quite conventional in the aforementioned technical fields.

The fixing ring 3 comprises fastening means 31 intended to engage under the annular shoulder 13 of the neck 12 of the reservoir. The fastening means 31 may for example be in the form of a fastening head or in the form of a continuous annular bead that can be housed under the shoulder 13. Optionally, the ring may be provided with an outer covering 35 On the other hand, the fixing ring 3 forms a receiving housing 32 in which the flange 22 of the pump body 21 is received, advantageously by snap-fastening. Above this housing 32 the ring forms a sleeve 33 whose outer wall has grooves 34. These grooves 34 extend over all or part of the height of the sleeve 33 and are open towards the top. Instead of the heads or the hooking cord, one can provide a thread adapted to be screwed on a threaded tank neck.

The dispensing piece 5 is a complex piece which can, however, be made in one piece. This part 5 comprises a dispensing nozzle 50 forming a dispensing orifice 51 at which the fluid dispensed by the dispenser comes out and can be retrieved by the user. The part 5 further comprises a connecting sleeve 55 fixedly mounted on the free upper end of the actuating rod 23. The sleeve 55 is provided with two support fins 54 which extend from both sides. other of the sleeve 55. In addition, the part 5 comprises a flexible conduit 53 which connects the sleeve 55 to the dispensing nozzle 50. Thus, the fluid product discharged by the pump through the actuating rod 23 may flow. through the flexible conduit 53 to reach the endpiece 50 where it is distributed at the dispensing orifice 51. According to the invention, the endpiece 50 is provided with a guide groove 52 which extends substantially perpendicularly to the axis of the dispensing orifice 51. The part 5 can be made in one piece by overmolding the flexible tube 53 on the sleeve 55 and the tip 50. A flexible material is preferably used for the conduit 53. in order to guarantee a great degree of freedom between the sleeve 55 and the tip 50.

The pusher 4 comprises a bearing surface 41 on which the user can press with the aid of one or more finger (s). The bearing surface 41 is formed with a window 42. In addition, the pusher comprises a lateral skirt 43 which is substantially cylindrical in shape. Internally, the skirt 43 forms a ratchet 44 near its bearing surface 41. The skirt 43 also forms a lateral opening which serves as a sliding receiving housing 45 for the tip 50. figure 1 , the tip 50 can be seen engaged through the housing 45. The pusher 4 can be manually driven in rotation about the axis X relative to the pump 2, the fixing ring or the reservoir. According to the invention, the pusher 4 will serve as a rotary actuator for the cam member 6.

The cam member 6 comprises an upper plate 61 which is provided on at least a portion of its periphery with a rib 62 projecting downwards. This rib extends in a non-circular path so that the distance separating the rib 62 from the X axis varies as one moves along the rib 62. According to the invention, this rib will serve as cam path for the tip 50. Indeed, we can see on the figure 1 this rib 62 is engaged inside the groove 52 formed by the endpiece 50. It is then easily understood that the endpiece 50 will move radially inwardly or outwardly as its groove 52 becomes moves along the rib 62. This is clearly visible on the Figures 2a and 2b . Thus, to move the tip 50 along the cam path 62, simply rotate the pusher 4 about the axis X. Since the tip 50 is engaged in the housing 45, it is forced to follow the rotation printed by the pusher, but is also forced to follow the cam path of the fact that its groove 52 is engaged on this path. In the end, the endpiece 50 will undergo a rotation combined with a radial displacement so as to describe a substantially helical path. This is clearly visible by comparing the Figures 2a and 2b . The figure 2a corresponds to the position represented on the figure 1 . This is the dispensing position, in which the user can press the pusher to dispense a dose of fluid. The tip 50 then protrudes out of the housing 45. The cam path 62 is located near the housing 45. Its distance to the X axis is then maximum. By turning the pusher 4 in the direction of the arrow shown on the figure 2a , the tip 50 engaged in the housing 45 will rotate with the pusher, but will also move along the cam path 62 to reach the position of the figure 2b . This is the rest position in which the dispenser can be stored. The tip 50 no longer protrudes from the housing 45 and the cam path 62 is then remote from the housing 45. The distance separating the cam path from the X axis is then minimal. To allow such a combined movement of the tip 50, it is of course that the pusher is rotatable, but also that the cam member 6 is locked in rotation. To do this, the cam member 6 comprises several tabs 63 provided with ribs 64 engaged in the grooves 34 of the sleeve 33 of the fixing ring. The engagement of the ribs 64 in the grooves 34 ensures a rotational locking of the cam member 6 relative to the ring 3 while permitting axial displacement of the cam member 6 along the axis X. D on the other hand, it is also necessary that the cam member 6 is integral in axial displacement of the pusher 4. For this, the peripheral edge of the plate 61 is locally engaged behind the inner bead 44 formed by the skirt 43 of the pusher. The pusher 4 can however rotate around the plate 61, but will cause this plate when the pusher is moved axially. Finally, to transmit the force of the pusher to the actuating rod, the cam member 6 comprises two thrust flanges 65 which engage with the fins 56 of the dispensing part 5. Thus, the pusher 4 can turn around the cam member 6 which is locked in rotation, but not in axial translation relative to the ring 3. By pressing the pusher 4, the cam member 6 will press through these flanges 65 and fins 56 on the actuating rod 34 to actuate the pump 2.

It should be noted that during the actuation of the dispenser consisting in axially moving the pusher 4, the flexible conduit 53 is not deformed. On the other hand, when the pusher 4 is rotated, the flexible conduit 53 is deformed to follow the combined rotational and radial translational movement of the endpiece 50.

In this first embodiment, the dispensing nozzle 50 is rotationally integral with the pusher 4 which performs a function of a rotary actuator. The cam member 6 is locked in rotation on the ring 3 but moves axially along the axis X together with the pusher 4. This is only a non-limiting embodiment as will be seen hereinafter. after.

We will now refer to the figure 3 to explain a second embodiment of the invention. The reservoir 1, the dispensing member 2 and the dispensing part 5 may be substantially similar or identical to those of the first embodiment. The fixing ring 3 also comprises fastening means 31 on the tank neck and a receiving housing for receiving the pump. The ring 3 also forms a sleeve 33 which is provided externally of vertical grooves 34. The ring 3 further comprises a detent cord 36.

The pusher 4 'comprises a bearing surface 41' and a plurality of support flanges 46 which bear on the fins 56 of the dispensing part 5. The pusher 4 'need not be rotatable.

The cam member 6 'comprises a platen 61' forming a cam path, as in the first embodiment. The cam member also includes a plurality of anchors 63 'formed with internal ribs 64' engaged with the grooves 34 of the sleeve 33. At its lower end, the tabs 63 'are snapped onto the cord 35. Thus, the cam member 6 'is fixedly mounted in rotation and in axial displacement on the fixing ring 3. It is even conceivable to make the cam member 6' and the ring 3 integrally.

In this embodiment, the dispenser further comprises a rotary actuator 7 which is distinct from the pusher 4 'and the cam member 6'. This actuating member 7 comprises a sleeve 71 rotatably engaged around the fixing ring 3. Above this sleeve 71, the actuating member 7 forms a section in which is formed a sliding guide housing 75 The end piece 50 is slidably engaged inside this housing 75. The actuating member 7 also forms an annular plate 73 formed with a central opening through which the support lugs 46 of the pusher 4 pass. . The cam member 6 'is housed inside the rotary actuating member 7 which at the same time serves as a covering function for the dispenser by masking the cam member 6' and the fixing ring 3.

Thus, by rotating the actuating member 7 about the X axis, the dispensing tip 50 is rotated, but it is constrained to follow the cam path 62 formed by the cam member. 6, as in the first embodiment. The cam member 6 'and the pusher 4' remain static during the rotation of the actuating member 7. Then, by pressing the pusher 4 ', the pump 2 is actuated and fluid is dispensed to through the dispensing nozzle 50, which remains fixed to it, since mounted on the actuating member 7 which is not axially displaceable. Unlike the first embodiment in which the flexible conduit 53 is not deformed during the actuation of the dispenser, in this second embodiment, the flexible conduit 53 is deformed during actuation of the dispenser since the rod of actuation is moved axially while the dispensing tip 50 remains static.

It should be noted that in this second embodiment the actuating member is separate from the pusher and the cam member 6 'is not displaced axially. However, the rotation of the actuating member 7 with respect to the cam member 6 'makes it possible to move the dispensing nozzle 50 in a substantially helical path resulting from the combination of a rotary displacement and a displacement radial.

We will now refer to figures 4 , 5a and 5b to describe a third more complex embodiment of the invention. The distributor comprises eight constituent elements, namely a reservoir 1, a pump 2, a fixing ring 3, a hoop 8, a rotary actuator 7, a dispensing part 5, a pusher 4 "consisting of a body 40 and a cap 49 and a cam member 6 ".

The reservoir 1 comprises a neck 12 in which the pump 2 is engaged. The fixing ring 3 makes it possible to seal the pump 2 on the neck 12. The hoop 8 is fixedly mounted, both in rotation and in axial displacement. on the ring 3 or on the reservoir 1. The hoop 8 comprises a base 82 forming a sliding groove 827. Above the base 82, the hoop 8 comprises a sleeve 83 which externally defines a second cam path 84 and internally axial guide grooves (not shown). The second cam path 84 has a helical portion in the form of a screw thread and an axial vertical portion connected to the helical portion. The socket comprises two cam tracks 84 of this type. They are formed on the outer wall of the sleeve 83.

The dispensing part 5 may be substantially similar or identical to those of the first two embodiments. The connecting sleeve 55 is fitted on the free end of the actuating rod 23. The dispensing nozzle 50 is connected to the sleeve 55 by a flexible conduit 53. Two arms or support wings 56 extend from and the other of the sleeve 55. The rotary actuating member 7 is engaged around the hoop 8 and forms one or more profile (s) (not shown) engaged (s) in the peripheral groove 827. Thus, the actuating member 7 is integral with the hoop 8 while being rotatable about itself around the hoop 8. The actuating member 7 is not axially movable. The actuating member 7 has a polygonal cross section, preferably substantially square.

The pusher 4 "comprises a body 40 forming a sliding receiving housing 45 for the dispensing nozzle 50. On the other hand, the body 40 forms branches 48 each provided with a cam lug intended to engage in the second cam track 84 formed by the hoop 8. The body 40 has a cross section of polygonal shape, preferably substantially square whose dimensions allow its engagement inside the actuating member 7. Thus, a rotation of the actuating member 7 drives the body 40 of the pusher 4 "in rotation. However, since the body 40 is engaged with the second cam path 84, it will be forced to move axially as the cam lugs move in the helical portions of the cam path 84. counterclockwise actuating member from the low position, the pusher will move axially upward while performing a rotation on itself. Once arrived at the top of the helical portion of the second cam path, the lugs can move axially in the axial vertical portions of the cam paths. Therefore, the pusher can be moved axially to press the arms or support wings 56 of the dispensing part 5. This position is represented on the figure 5b .

On the other hand, the cam member 6 "comprises an upper plate 61 which defines a rib 62 serving as a cam path, just as in both first embodiments. Further, the cam member 6 "comprises two tabs 63 provided with axial guide ribs engaged in grooves formed within the socket 83. As a result, the cam member 6" can move axially through relative to the fret 8, but is locked in rotation with respect to this same fret. The tabs 63 of the cam member 6 "extend through the body 40 of the pusher 4". Specifically, the limbs 48 of the body 40 extend outside the bushing 83 while the tabs 63 of the cam member 6 "extend within the bushing 83.

Finally, the pusher 4 "also comprises a cap 49 forming an opening 495. The cap 49 is mounted on the body 40 so that the opening 495 is aligned with the sliding receiving housing 45 of the body 40. The plate 61 of the the cam member 6 "is disposed between the body 40 and the cap 49, and thus is trapped in the pusher, while permitting relative rotation between the cam member 6" and the pusher 4 ".

As in the first two embodiments, the rib 62, acting as a cam path, extends in a non-circular path so that the distance separating the rib from the axis of rotation of the distributor varies as the we move along the cam path. As can be seen on the Figures 5a and 5b , the cam path 62 is engaged in a groove 52 formed at the dispensing nozzle 50. On the other hand, the nozzle 50 is slidably engaged in the housing 45 of the body 40. actuating member 7 in rotation on itself (without axial displacement), this induces two simultaneous movements. The first displacement is that of the pusher 4 "which is constrained to move axially due to its cooperation with the second helical cam path 84 of the hoop 8. The second movement is that of the dispensing tip 51 which is constrained to move radially as it follows the cam path 62 which approaches the axis of rotation X of the distributor, therefore, by rotating the actuating member 7, the pusher 4 "rises and turns and the dispensing tip rotates and moves radially. In the rest and storage position shown on the figure 5a , the tip 50 is completely retracted inside 4 "pusher and the opening 495 is even closed by the actuating member 7. The pusher 4" is in its low position. From this position, by turning the actuating member 7, the pusher 4 "will rotate with the member 7 and simultaneously move axially upward.Concomitantly, the tip 50, which is integral in rotation of the housing 45 formed by the pusher, moves in rotation, but also moves radially outward, constrained by the cam path 62. In the up position, one arrives in the configuration shown on the figure 5b , in which the dispensing nozzle 50 projects out of the housing 45. During these combined movements of the pusher and the nozzle, the flexible conduit 53, at its connection to the nozzle 50, has moved not only in rotation but also in axial translation. This is why it is necessary that the conduit 53 has a particularly high flexibility. This is only possible by overmolding the flexible conduit on the connecting sleeve and the dispensing nozzle 50.

In this third embodiment, the pusher is distinct from the rotary actuating member and the endpiece 50 is mounted on the pusher. The cam member is locked in rotation, but is displaceable in axial translation. The actuating member is rotatable, but locked in axial translation.

Through these three embodiments of the invention, it has been seen that it is possible to radially move the dispensing nozzle 51 while simultaneously rotating it.

Claims (12)

1. A fluid dispenser comprising:

   • a fluid reservoir (1) provided with an opening (11);

   • a fluid dispenser member (2), such as a pump or a valve, said member comprising a body (21) and an actuator rod (23) that is displaceable down and up along an axis X;

   • a fastener ring (3) for fastening the dispenser member on the opening of the reservoir;

   • a pusher (4; 4'; 4") that is axially displaceable down and up so as to displace the actuator rod (23); and

   • a dispenser endpiece (50) defining a dispenser orifice (51);

   • displacement means (6, 4; 6', 7; 6", 7, 4") that are suitable for displacing the endpiece (50) both in turning about the axis X and in radial translation, the radial distance between the endpiece and the axis X varying as the endpiece turns about said axis X, such that the endpiece is displaceable between an extended position remote from the axis X and a retracted position close to the axis X, the displacement means comprising a rotary actuator member (4; 7) that turns about the axis X, the endpiece (50) being constrained to turn with said actuator member, and a cam path (62) that is prevented from turning relative to the reservoir (1), the radial distance between the path (62) and the axis X varying along the path, the endpiece (50) being engaged with the cam path in such a manner that it follows the cam path while it is being turned by the actuator member (4; 7),

   the cam path (62) being formed by a cam element (6") that is mounted on a ferrule (8) that is mounted in stationary manner relative to the reservoir (1), the cam element (6") being prevented from turning relative to the ferrule (8), being capable of being displaced axially, the pusher (4") est characterized in that the cam element is in engagement with the ferrule (8) via a second threaded cam path (84), the pusher (4") is turned by the actuator member (7), the pusher (4") is displaced axially relative to the ferrule (8) and to the actuator member (7) by following the second threaded cam path (84) while said pusher is being turned by the actuator member, such that turning the actuator member simultaneously causes the rotary axial displacement of the pusher and the rotary radial displacement of the endpiece.
2. A dispenser according to claim 1, in which the endpiece (50) is connected to the actuator rod (23) via a flexible hose (53).
3. A dispenser according to claim 1 or claim 2, in which the cam path (62) is axially displaceable down and up with the pusher (4; 4").
4. A dispenser according to claim 1 or claim 2, in which the cam path (62) is stationary relative to the reservoir (1).
5. A dispenser according to any one of claims 1 to 3, in which the pusher (4) forms the rotary actuator member, the endpiece (50) being constrained to turn with the pusher.
6. A dispenser according to any one of claims 1 to 3, in which the endpiece (50) is constrained to turn with the pusher (4"), the pusher being turned by the rotary actuator member (7) which is a part that is distinct from the pusher, the actuator member being prevented from moving in axial translation.
7. A dispenser according to any preceding claim, in which the endpiece (50) is disposed in a rotary housing (45; 75) in which it is displaceable radially.
8. A dispenser according to any preceding claim, in which the cam path (62) is formed by a cam element (6; 6") that is mounted on the fastener ring.
9. A dispenser according to any preceding claim, in which the pusher (4") is axially displaceable in such a manner as to be housed entirely in the actuator member (7) with the endpiece (50) in its retracted position, that is masked by the actuator member.
10. A dispenser according to any preceding claim, in which the pusher (4") comprises a body (40) and a cover (49), the body (40) forming a rotary housing (45) for the endpiece (50), the cam path (62) being disposed between the body and the cover.
11. A dispenser according to any preceding claim, in which the cam path (62) is formed by a cam element (6; 6'; 6") comprising a plate (61) provided with a rib (62) defining the cam path, the endpiece (50) including a groove (52) in which the rib (62) is slidably housed.
12. A dispenser according to any preceding claim, in which the pusher (4) includes a window (42) through which the cam element (6) is visible.

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