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CN-118556027-B - Liquid dispenser

CN118556027BCN 118556027 BCN118556027 BCN 118556027BCN-118556027-B

Abstract

A liquid dispenser (10) is known, which has a liquid reservoir for containing liquid and has a discharge head (30) which is fixed at a bottle body (20) surrounding the liquid reservoir and at which a discharge opening (40) is provided. It is also known that the liquid dispenser (10) can have a protective cap (60) which can be plugged onto the discharge head (30) and which has at least one ventilation opening (62) through which ambient air can flow into the cap interior in the plugged state of the protective cap. In the delivery state, a removable closing element (80) is provided, which prevents ambient air from being able to pass through the ventilation opening (62) to the discharge opening (40). The outlet head (30) has a substantially planar upper annular surface (34) which surrounds the applicator nipple (36) and on the outside of which the protective cap (60) is held in a form-fitting or force-fitting manner in the plugged state. The applicator nipple (36) has an elongated shape with a substantially cylindrical outer circumferential surface (36A) and an end surface (36B) penetrated by the discharge opening (40).

Inventors

  • STEFAN RITSCHE
  • J. GRINA-PASS

Assignees

  • 阿普塔尔拉多尔夫策尔有限责任公司

Dates

Publication Date
20260505
Application Date
20220118

Claims (20)

  1. 1.A liquid dispenser (10) having the following features: a. the liquid dispenser (10) has a liquid reservoir (22) for containing a liquid, and B. The liquid dispenser (10) has a discharge head (30) which is fixed to a bottle body (20) surrounding the liquid reservoir (22) and at which a discharge opening (40) is provided, and C. the liquid dispenser (10) has a protective cap (60) which can be inserted onto the discharge head (30), and D. The protective cap has at least one ventilation opening (62) through which ambient air can flow into the cap interior in the plugged state of the protective cap (60), and E. -providing in the delivery state a removable closing element (80) preventing ambient air from being able to pass through the ventilation opening (62) to the discharge opening (40); Characterized by the following additional features: f. The discharge head (30) has a substantially planar upper annular surface (34) which surrounds the applicator nipple (36) and on the outside of which the protective cap (60) is held in a form-fitting or force-fitting manner in the plugged state, and G. The applicator nipple (36) has an elongated shape with a substantially cylindrical outer circumferential surface (36A) and an end surface (36B) penetrated by the outlet opening (40).
  2. 2. The liquid dispenser (10) according to claim 1, having the following additional features: a. The protective cap (60) has a coupling section (64) which has an internal cross section at least as large as the outer contour of the annular surface (34) and which, in the plugged-in state, rests against an outer peripheral region (32) which is coupled to the annular surface (34); b. The protective cap (60) has a coating section (66) which is coupled to the coupling section (64) and which has an internal cross section which tapers stepwise relative to the coupling section (64), wherein the applicator nipple (36) is arranged in the coating section (66) in the plugged state of the protective cap.
  3. 3. The liquid dispenser (10) according to claim 2, having at least one of the following additional features: c. the inner cross section of the coupling section (64) has a circular shape and/or the inner cross section of the cladding section (66) has an elliptical shape, and/or D. at the distal end of the cladding section (66), a locking section (68) is coupled, which has a widened outer contour relative to the cladding section (66).
  4. 4. A liquid dispenser (10) according to claim 3, having the following additional features: a. The at least one ventilation opening (62) penetrates the cladding section (66).
  5. 5. The liquid dispenser (10) according to any one of claims 1 to 4, having the following further features: a. The closing element (80) is formed by a pull-down element which is arranged in one piece on the protective cap, is connected in a material-fitting manner to the edge surrounding the ventilation opening (62) in the delivered state, and can be removed from the protective cap (60) by pulling in order to open the ventilation opening (62).
  6. 6. The liquid dispenser (10) according to any one of claims 2 to 4, having the following further features: a. The closing element (80) is formed by a glue strip arranged at the protective cap, which glue strip in the delivered state covers the ventilation opening (62), wherein the glue strip is arranged at the protective cap (60).
  7. 7. The liquid dispenser (10) according to claim 6, having the following additional features: The adhesive strip is arranged at the protective cap (60) circumferentially surrounding the protective cap.
  8. 8. The liquid dispenser (10) according to claim 6, having the following additional features: The adhesive strip is arranged on the protective cap (60) in the region of the coating section (66).
  9. 9. The liquid dispenser (10) according to any one of claims 1 to 4, having the following further features: a. the closing element (80) is formed by an additional cap which is arranged in the cap interior of the protective cap (60) and covers the discharge opening.
  10. 10. The liquid dispenser (10) according to claim 9, having at least one of the following additional features: b. The additional cap is held in a force-fitting manner on the outer circumferential surface (36A) of the applicator nipple (36), or C. the additional cap is held in a form-fitting manner on the outer circumferential surface (36A) of the applicator nipple (36).
  11. 11. The liquid dispenser (10) according to claim 10, having the following additional features: the additional cap is held in a force-fitting manner on the outer circumferential surface (36A) of the applicator nipple (36) by means of a clamping rib (92) on the inner side of the additional cap.
  12. 12. The liquid dispenser (10) according to claim 10, having the following additional features: the additional cap is held in a form-fitting manner on the outer circumferential surface (36A) of the applicator nipple (36) by means of an internal thread (93) on the inner side of the additional cap.
  13. 13. The liquid dispenser (10) according to claim 9, having the following additional features: a. the additional cap is connected in the delivery state to the discharge head (30) in a force-fit or form-fit manner by means of a coupling structure.
  14. 14. The liquid dispenser (10) of claim 13, having at least one of the following additional features: b. a recess (35) is provided in the annular face (34), into which recess the coupling structure (94) engages, or C. A retaining structure (39) forming an undercut is provided on the annular surface (34).
  15. 15. The liquid dispenser (10) according to any one of claims 2 to 4, having the following further features: a. the protective cap (60) has a movable or rotatable section as a closing element (80) which can be moved between a position closing the ventilation opening (62) and a position releasing the ventilation opening (62).
  16. 16. The liquid dispenser (10) of claim 15, having one of the following additional features: b. The movable or rotatable section is guided on the outside on the cladding section (66), and/or C. the movable or rotatable section and the protective cap (60) have latching means (95) in order to lock the release position of the section.
  17. 17. The liquid dispenser (10) according to any one of claims 1 to 4, having the following further features: a. The applicator nipple (36) is surrounded in the delivered state by a tubular sheath forming the closing element (80).
  18. 18. The liquid dispenser (10) of claim 17, having at least one of the following additional features: b. The tubular wrapping is made of an elastic plastic and/or C. the tubular wrapping has a set separation line (82) between which a separable opening strip (84) is disposed.
  19. 19. The liquid dispenser (10) of claim 18, having the following additional features: the tubular sheath has two set separation lines (82).
  20. 20. The liquid dispenser (10) of claim 18, having the following additional features: a gripping section (86) is provided at the end of the opening strip (84).

Description

Liquid dispenser Technical Field The present invention relates to a liquid dispenser for dispensing liquids, in particular for dispensing pharmaceutical or cosmetic liquids. Background A liquid dispenser of this type is formed with a liquid reservoir for containing liquid prior to discharge and a discharge head with a discharge opening through which liquid can be discharged when required. By means of a pump device or other means, the user can apply pressure to the liquid from the liquid reservoir and thereby can output the liquid through the discharge opening. It is known that such liquid dispensers can have a protective cap which is removable for the output liquid, said protective cap mechanically protecting the discharge opening in the plugged state. However, in order to enable a rapid drying of the residual liquid which may remain, such a cap may have at least one ventilation opening through which ambient air can flow into the cap interior in the plugged-in state of the protective cap. Such a protective cap is known from DE 10 2013 226 250 A1. The ventilation opening of the cap proposed here has an outer circumferential surface with an outer diameter that remains substantially unchanged and an end face, wherein the ventilation opening is provided in the outer circumferential surface or in the end face. In order to prevent dirt and germs from penetrating until the liquid dispenser is put into use, it is proposed in the document mentioned that the ventilation opening is kept closed by means of a glue strip or by means of a section connected in one piece to the cap until the liquid dispenser is put into use. The vent opening is opened only when the liquid dispenser is put into use, so as to allow venting of the discharge opening during the use phase of the liquid dispenser. Disclosure of Invention The object of the invention is to improve a liquid distributor of this type in such a way that a ventilated protective cap can be realized in an improved manner. According to the invention, a liquid dispenser is proposed for this purpose, which generally has a liquid reservoir for holding liquid prior to discharge and a discharge head with a discharge opening. The liquid reservoir is defined by a bottle. It is particularly preferred that the bottle body can be a squeeze bottle body, i.e. a bottle body composed of plastic, which can be compressed against a restoring force in order to put the liquid in the liquid reservoir under pressure and thereby drain the liquid. For example, polyethylene is considered as a material for such bottles. Alternatively, rigid bottles may be used. The liquid reservoir preferably has an internal volume of less than 20ml, in particular an internal volume of between 5 ml and 15 ml. In the delivery state, the liquid reservoir is filled with the liquid to be discharged, in particular with a pharmaceutical liquid. The liquid dispenser according to the invention may in particular be provided for ophthalmic use, i.e. for application into the eyes of a user. Accordingly, the liquid reservoir may be filled with an eye drop, in particular a cyclosporine eye drop. The discharge head is fixed at the bottle surrounding the liquid reservoir, for example by means of a snap-fit connection or a screw-thread connection. In principle, a one-piece design is also possible. The discharge head has a base with an upper, i.e. outer annular surface pointing away from the liquid reservoir, which is of substantially planar design. The coupling means for coupling with the bottle body are preferably arranged at the preferably cylindrical base. The mentioned annular surface encloses the applicator nipple, which protrudes beyond the annular surface. The applicator nipple has an elongated and substantially cylindrical shape. The central axis of the applicator adapter tube preferably extends coaxially with the central axis of the substantially flat annular face and the base. The normal vector on the annular face encloses an angle of less than 20 ° with the central axis of the applicator adapter tube. The substantially cylindrical shape of the applicator nipple is also understood to be a shape with low conicity. An applicator nozzle, in the sense of the present invention, whose angle subtended from the proximal end up to the outer circumferential surface of the distal end over the height of the annular surface is less than 10 ° with respect to the central axis of the applicator nozzle, is understood to be essentially cylindrical. An elongated shape is understood to mean that the length of the cylindrical applicator nipple is greater than its average diameter. Preferably, the length is at least 50% greater than the average diameter. The discharge opening is provided at the distal end of the applicator nipple. The outlet opening has an outlet direction which preferably coincides with the orientation of the central axis of the applicator adapter tube. The applicator nipple has a length of preferably at least 9 mm, particul