Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons

Definitions

• the present invention relates to a fluid dispenser device.
• the present invention relates to a fluid dispenser device of the single-dose or bidose type, adapted to respectively distribute a single dose of fluid in a single actuation or two doses of fluid in two successive actuations.
• locking means in the rest position that the user must overcome when actuating.
• these locking means are formed between the body which supports the reservoir and the dispensing head with respect to which said body moves during actuation.
• This type of locking means has certain disadvantages.
• the reliability of the blocking is not always guaranteed, especially during transport or during a fall of the device.
• the locking means comprise breakable bridges, this requires co-molding the body and the head, which can be complex and expensive. Bridges breaking between the body and the head also generate a significant radial size, which affects the compactness of the device.
• This implementation also prevents the provision of anti-tearing means, distinct from said breakable bridges between these two same parts, to protect the integrity of the reservoir and prevent access to the fluid contained therein.
• the present invention aims to provide a fluid dispensing device that does not reproduce the aforementioned drawbacks. More particularly, the present invention aims to provide a fluid dispenser device which ensures a reliable locking before actuation.
• the present invention also aims to provide such a device which combines locking means breakable bridges and separate anti-tearing means of said breakable bridges.
• the present invention also aims to provide such a device which is compact and compact, especially in the radial dimension.
• the present invention also aims to provide such a device that is simple and inexpensive to manufacture and assemble.
• the subject of the present invention is therefore a device for dispensing a fluid product, comprising a reservoir containing fluid, a dispensing head provided with a dispensing orifice, dispensing means for dispensing at least a portion of said fluid product through said dispensing orifice, and passage means for connecting said reservoir to said dispensing orifice during the actuation of said dispensing means, said passage means comprising a hollow needle penetrating into said reservoir during the actuation of said dispensing means, said needle being fixed in a needle holder itself fixed in said dispensing head, said needle support having locking means which, in the rest position, cooperate with said reservoir to prevent its axial displacement relative to said head.
• said locking means are deactivated when the user exerts an axial actuating force greater than a predetermined threshold between said reservoir and said dispensing head.
• said locking means comprise a locking element connected to said needle support by at least one breakable bridge.
• said locking element is a radial ring connected to said needle support by a plurality of breakable bridges.
• said dispensing means comprise a stopper-piston which in the rest position closes said reservoir in a sealed manner, and which upon actuation is first pierced by said needle. and then moved axially in said reservoir to expel the fluid through said needle in the direction of said dispensing orifice.
• said device comprises actuating means for actuating said dispensing means, said actuating means comprising a body fixedly receiving said reservoir, said body being able to slide axially with respect to said dispensing head.
• the device comprises anti-tearing means disposed between said body of said actuating means and said dispensing head.
• said anti-tearing means comprise an outward radial shoulder formed on said body and an inward radial shoulder formed on said dispensing head, the inner diameter of said radial inward shoulder being smaller than the outer diameter of said dispensing head. radial shoulder outward.
• FIG. 1 is a diagrammatic cross-sectional side view of a fluid dispenser device according to an advantageous embodiment of the present invention, in the rest position before actuation,
• FIG. 2 is a view similar to FIG. 1, seen from behind,
• FIG. 3 is a view similar to FIG. 1, showing the device after actuation
• FIG. 4 is a view similar to FIG. 2, showing the device after actuation
• FIG. 5 is a cutaway perspective view of a fluid dispenser device according to an alternative embodiment of the present invention, in the rest position before actuation,
• FIG. 6 is a perspective view of the needle support of FIGS. 1 to 4, and Figure 7 is a bottom view of the needle holder.
• axial and radial refer to the longitudinal axis A of the device shown in FIGS. 1 to 4.
• up and down refer to the position of the device in the figures 1 to 4.
• the device comprises a reservoir 10 containing fluid to be dispensed, typically a liquid.
• This reservoir 10 is disposed inside a body forming a dispensing head 20.
• This dispensing head 20 has a dispensing orifice 21, which in the example of Figures 1 to 4, is oriented radially.
• This dispensing orifice 21 serves to dispense a dose of fluid product from said dispensing head 20.
• this dispensing orifice could be oriented axially, in particular in a nasal dispensing head.
• the reservoir 10 is formed by a hollow and blind body 1 1 having a single opening closed by a piston plug 30.
• a piston plug 30 Other implementations are possible, for example an open tank on both sides, with a plug respective to close each opening.
• Documents WO03041872 and FR2970955 describe reservoirs of this type.
• the dispensing head 20 comprises passage means 40 which, during actuation, connect the reservoir 10 to the dispensing orifice 21.
• These passage means 40 comprise a needle 41 adapted to pierce the piston plug 30 at the time of actuation.
• This needle 41 is hollow, and can be formed in a conventional manner.
• This needle 41 is fixed relative to the dispensing head 20 and in particular with respect to the dispensing orifice 21.
• the needle 41 is fixed in a needle holder 60 which is itself fixed, in particular force-fitted, into the dispensing head 20.
• the needle support 60 advantageously comprises a hollow body 61 that is approximately cylindrical in which said needle 41 comes set yourself.
• internal axial ribs 63 are provided inside said hollow body
• External axial ribs 62 may also be provided on said hollow body 61, as shown in Figure 6, whose function will be described below.
• Actuating means 50 are provided to enable actuation of the device.
• these actuating means 50 comprise a body 51 movable relative to the dispensing head 20, said body 51 cooperating with said reservoir 10 to move it relative to the dispensing head 20 and therefore with respect to the needle 41.
• the user places two fingers on the radial supports 22 formed on the dispensing head 20, and presses with the thumb on said actuating body 51.
• the reservoir 10 is thus urged axially upwards, so that the needle 41 will pierce the piston plug 30.
• the contents of the reservoir 10 is then connected to the dispensing orifice 21 and the The user's support on the actuating means 50 moves the piston plug 30 into the reservoir 10 to ensure the dispensing of the fluid product.
• This plug-piston 30 then acts as a piston by pushing the fluid out of said reservoir 10, through the needle 41.
• the needle support 60 comprises locking means 65,66 which in the rest position cooperate with the reservoir 10 to prevent its axial displacement relative to the head 20.
• locking means 65,66 which in the rest position cooperate with the reservoir 10 to prevent its axial displacement relative to the head 20.
• the locking means comprise a blocking element 66 connected to the hollow body 61 of the needle support 60 by at least one breakable bridge 65.
• the locking element is advantageously made in the form of a radial ring 66, and there are four breakable bridges 65.
• any number of breakable bridges can be envisaged.
• the locking element could be made differently.
• the locking means of the present invention are particularly advantageous in that they are simple and therefore inexpensive to manufacture, in particular to mold, and to assemble.
• the breakable bridges 65 break, which allows the axial sliding of said locking element 66 around the hollow body 61 of the needle support 60.
• FIGS 3 and 4 show the device after actuation, with the locking element 66 at the top of said hollow body 61.
• the ribs 62 may serve to lock said locking member 66 after actuation, for example by clamping or latching.
• Said predetermined threshold of the axial actuating force at which the breakable bridges break ensures precompression in the hand of the user which ensures that the total actuating stroke will be performed when said breakable bridges break.
• This threshold can be chosen to ensure good anti-actuation safety during transport and storage, while allowing a not too difficult operation.
• the device advantageously comprises anti-tearing means 70 arranged between the body 51 of the actuating means 50 and the dispensing head 20, in order to prevent the user from having easy access to the fluid product contained in the reservoir 10.
• these anti-tearing means comprise an outward radial shoulder 71 formed on the body 51 and a radially inward shoulder 72 formed on the dispensing head, the inner diameter of said radial shoulder towards the inner 72 being smaller than the outer diameter of said radially outward shoulder 71.
• the radially inward shoulder 72 formed on the head 20 prevents the body 51 and therefore the reservoir 10 from being removed from the device.
• the fact of deporting the locking means at the level of the needle support 60 makes it possible to produce a device provided with both locking means, effective anti-tearing means and reduced radial dimensions. minimum.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Coating Apparatus (AREA)
• Devices For Dispensing Beverages (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=56855654

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Family Cites Families (17)

• 2016
  • 2016-06-20 FR FR1655696A patent/FR3052690B1/fr not_active Expired - Fee Related
• 2017
  • 2017-06-16 CN CN201780032357.XA patent/CN109195710B/zh active Active
  • 2017-06-16 WO PCT/FR2017/051585 patent/WO2017220901A2/fr unknown
  • 2017-06-16 JP JP2019518155A patent/JP6926201B2/ja active Active
  • 2017-06-16 EP EP17748522.4A patent/EP3471891B1/de active Active
  • 2017-06-16 US US16/306,666 patent/US10456799B2/en active Active

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