A
cantilever arm (1, 20, 25, 40, 50, 60, 70) capable of being fixed at one end to an object, the
cantilever arm comprising a resilient material and designed to receive a
variable load (4), having a flat body (11) arranged with a surface adjusted vertically in operation, the
cantilever arm having, in the operating position, a height (v) defined by an upper end region (6) and a lower end region (7), and a fixed side region (2) for fixing the cantilever arm (1, 20, 25, 40, 50, 60, 70) to the object. and on the other hand by its opposite cantilevered region (8), the cantilever arms (1, 20, 25, 40, 50, 60, 70) further comprising a force application device designed to support a load (4), the flat body (11) of the cantilever arms (1, 20, 25, 40, 50, 60, 70) comprising a deformation opening (10) and a connection device for a deformation sensor for measuring the deformation of the cantilever arms under the
current load (4). The deformed opening (10) is formed by the flat body (11), penetrates the flat body, and is completely surrounded by the flat body, all edge areas of the deformed opening are in the plane of the flat body (11), the deformed opening has a horizontal extension (h) defined by the fixed side region (2) and the cantilever side region (8), and a vertical extension (v) defined by the upper end region and the lower end region, and under each
current load (4), The cantilever arm (1, 20, 25, 40, 50, 60, 70) is configured to deform in a predetermined manner in response to a force applied thereto, the force application
assembly being formed by the body (11) of the cantilever arm (1, 20, 25, 40, 50, 60, 70) and designed such that, in the operating position of the cantilever arm (1, 20, 25, 40, 50, 60, 70, at least a portion of the load (4) is introduced into the cantilever region (8), and the connection device is designed to clamp the deformation sensor between the fixed region (2) and the cantilever region (8) and to enable the sensor to be operational. The cantilever arm (1, 20, 25, 40, 50, 60, 70) is simple in design, inexpensive to manufacture, and allows for highly accurate measurement of a
variable load (4) using a deformation sensor (35).