US 11,725,675 B2
Fluid-actuated linear drive
Jürgen Gückel, Filderstadt (DE); Simone Kopp, Esslingen (DE); Ulrich Diener, Esslingen (DE); Mattias-Manuel Speckle, Vaihingen (DE); Andreas Trauschweizer, Esslingen (DE); and Bernhard Winter, Eichenbach (DE)
Assigned to Festo SE & Co. KG, Esslingen (DE)
Filed by Festo SE & Co. KG, Esslingen (DE)
Filed on Aug. 6, 2021, as Appl. No. 17/396,003.
Claims priority of application No. 102020210289.9 (DE), filed on Aug. 13, 2020.
Prior Publication US 2022/0049724 A1, Feb. 17, 2022
Int. Cl. F15B 15/14 (2006.01)
CPC F15B 15/14 (2013.01) 19 Claims
OG exemplary drawing
 
1. A fluid-actuated linear drive comprising a drive housing and a drive member which by way of fluid force can be driven relative to the drive housing into a linear drive movement in a housing longitudinal direction, wherein the drive member comprises a drive unit which has a drive piston which in the drive housing divides off two drive chambers from one another, said drive chambers being successive in the housing longitudinal direction and each being connected to one of two housing channels which each with an individual lateral coupling opening run out at a housing side surface of the drive housing which is orientated transversely to the housing longitudinal direction, wherein the two housing channels can be used for the feed and discharge of a drive fluid which generates the linear drive movement of the drive member, wherein the linear drive comprises an L-shaped attachment coupling part which is separate with regard to the drive housing, has a coupling limb and a connection limb which projects transversely therefrom, and in a position of use is built onto the drive housing at the outside in a manner such that the connection limb extends in the housing longitudinal direction along the housing side surface and the coupling limb extends in a housing transverse direction which is orthogonal thereto along a housing rear surface of the drive housing which is aligned transversely to the housing side surface,
wherein the attachment coupling part comprises a body, wherein a first coupling part channel and a second coupling part channel, which are separate from each other, pass through the body of the attachment coupling part without being connected to each other, said first coupling part channel having a first connection opening and a first axial coupling opening, and said second coupling part channel having a second connection opening and a second axial coupling opening, wherein said first and second connection openings each run out at an inner limb surface of the connection limb which faces the drive housing in a manner such that they are each connected to one of the two lateral coupling openings of the drive housing, and wherein said first and second axial coupling openings each run out at an outer limb surface of the coupling limb which faces away from the drive housing for allowing the feed and discharge of the drive fluid which produces the linear drive movement of the drive member, and
wherein said first coupling part channel is solely defined by a channel wall surface of the body of the attachment coupling part and forms a first direct and continuous fluid connection between said first connection opening and said first axial coupling opening, and
wherein said second coupling part channel is solely defined by a channel wall surface of the body of the attachment coupling part and forms a second direct and continuous fluid connection between said second connection opening and said second axial coupling opening, and said first direct and continuous fluid connection being fluidically isolated from said second direct and continuous fluid connection.