Finger pressing type spray pump

Finger pressing type spray pump

  • CN 106,573,263 B
  • Filed: 08/20/2015
  • Issued: 08/17/2021
  • Est. Priority Date: 08/26/2014
  • Status: Active Grant
First Claim
Patent Images

1. Finger-operated spray pump (1) for dispensing a medium (M), having a pump head (4), an outlet nozzle (10) and a pump chamber (36), the pump chamber (36) having an inlet valve (E) and a pump piston (13), wherein the medium (M) passes through a medium path (11) between the pump chamber (36) and the outlet nozzle (10), wherein the pump piston (13) also forms an outlet valve (A) in cooperation with a piston rod (6) and the pump piston (13) extends within a pump cylinder (15), wherein a catch (19) is connected to the pump cylinder (15) on the upper side and the catch (19) is designed to support a pump head spring (24), the pump head spring (24) supporting the pump head (4) relative to the pump cylinder (15), characterized in that a piston spring (23) is also provided between the piston rod (6) and the pump piston (13), and the piston spring (23) and the pump head spring (24) are supported on the locking piece (19),wherein the catch (19) is formed with a catch base (37) oriented transversely to the body axis (x) of the finger-pressure spray pump (1), the catch base (37) having an opening area and the piston rod (6) passing through the opening area, wherein the pump head spring (24) and the piston spring (23) are both supported on the catch base (37),and wherein a rod holder (7) for clamping a piston rod (6) extends only inside the pump head (4),and wherein the locking piece (19) is designed with a collar (21) extending in the direction of the pump head (4), wherein the collar (21) leaves a circumferential space (22) relative to the piston rod (6), wherein the pump head spring (24) is accommodated in the circumferential space (22) at least over a part of its axial extension.

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