Importance

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Abstract

The invention describes a locking arrangement which is advantageously used in an injection device for administering a medicinal drug, such as insulin for example. The locking arrangement has the following features: —a sleeve (15) having toothing (15c) along the inner circumference; —a sleeve-shaped, particularly a one-piece, coupling element (16) with a longitudinal axis (L), which is surrounded along its circumference by the sleeve (15), and which has a first section (16c) and a second section (16d), the first section (16c) being connected to the second section (16d) via an elastically deformable intermediate section (16e), the intermediate section (16e) having an engagement element (16f) which engages in the toothing (15c) of the sleeve (15); —a torque application device (11), particularly a torsion spring or a discharge spring, which applies a torque directed in a first rotational direction to the first section (16c) of the coupling element (16) around the longitudinal axis (L), wherein the engagement element (16f) is pushed into the toothing (15c) via the torque in such a manner that a rotation of the coupling element (16) relative to the sleeve (15) is blocked in the first rotational direction, wherein the second section (16d) of the coupling element (16) can be twisted relative to the first section (16c) around the longitudinal axis (L) in the first rotational direction, as a result of which the engagement of the engagement element (16f) in the toothing (15c), which blocks rotation in the first rotational direction, can be released in such a manner that a rotation of the coupling element (16) relative to the sleeve (15) in the first rotational direction is enabled.

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First Claim