Device for inhalation-synchronized dispensing of a fluid product, and method for assembling said device

A method for assembling an inhalation-synchronized fluid dispenser device, said device comprising:

• a body provided with a mouthpiece, a product reservoir containing a fluid product and a propellant gas being mounted to slide axially relative to said body, a metering valve, comprising a valve member movable between a rest position and an actuation position, being assembled on said reservoir for selectively dispensing the fluid product on each actuation, said device further comprising:
• a blocking element that is movable and/or deformable between a blocking position in which said metering valve cannot be actuated, and an actuation position in which said metering valve can be actuated;
• a trigger element that is movable and/or deformable between a locking position in which the trigger element blocks said blocking element in the blocking position, and a release position wherein the trigger element does not block said blocking element;
• an inhalation-controlled trigger system comprising an inhalation-sensitive member that is deformable and/or movable under the effect of inhaling, said inhalation-sensitive member cooperating with said trigger element, such that when said inhalation-sensitive member is deformed and/or moved, said inhalation-sensitive member moves and/or deforms said trigger element towards the release position, thus allowing said blocking element to move and/or deform from the blocking position towards the actuation position;
• an actuating member cooperating with said blocking element, such that in the blocking position of said blocking element, said blocking element prevents said actuating member from moving axially, and in the actuation position of said blocking element, said blocking element enables said actuating member to move axially;
• a cover comprising a central axial sleeve provided with a lower axial edge;
• a push member mounted to slide axially in said cover around said central axial sleeve, and intended to cooperate with said actuating member and with said reservoir;
• a spring disposed around said central axial sleeve, between a bottom of said cover and said push member;
• said method comprises the following steps:
• assembling said spring around said central axial sleeve,
• assembling said push member around said central axial sleeve,
• deforming said lower axial edge of said central axial sleeve, to produce a retaining collar for said push member and thus form a pre-assembled subassembly,
• inserting said reservoir into said body, and
• fixing said pre-assembled subassembly to said body.