公开(公告)号：US20230051973A1

公开(公告)日：2023-02-16

申请号：US17784371

申请日：2020-12-10

Applicant: Hilti Aktiengesellschaft

Inventor： Florian GOETZ

IPC: B23B31/00 ,  B23B31/107 ,  B23B51/04

Abstract: A device for transmitting a torque produced by a drill to a drill bit includes a shank and a tool fitting. The shank has a first outer conical region, a groove portion, and a second outer conical region and has first longitudinal grooves and second longitudinal grooves. The tool fitting has a basic body which has first outer rotary driving grooves, an intermediate element which has first inner rotary drivers, second inner rotary drivers, and first outer rotary drivers, and a locking device. In a connected state of the device, the first inner rotary drivers engage in the first longitudinal grooves, the second inner rotary drivers engage in the second longitudinal grooves, and the first outer rotary drivers engage in the first outer rotary driving grooves. The intermediate element has second outer rotary drivers which, in the connected state, engage in second outer rotary driving grooves of the basic body.

公开(公告)号：US20230066196A1

公开(公告)日：2023-03-02

申请号：US17784376

申请日：2020-12-07

Applicant: Hilti Aktiengesellschaft

Inventor： Florian GOETZ

IPC: B23B45/00

Abstract: A device for transmitting a torque produced by a drill includes a shank having a first outer conical region, a groove region, a second outer conical region, and a plurality of first longitudinal grooves extending over the first outer conical region, the groove region, and the second outer conical region and having a plurality of second longitudinal grooves extending over the second outer conical region. A tool fitting has a rotary driving part. The rotary driving part has an inner conical region and an inner driver region where the inner driver region has a plurality of first inner rotary drivers with a first width and first depth and a plurality of second inner rotary drivers with a second width and second depth. The first depth and the second depth are identical and the second longitudinal grooves also extend over the first outer conical region and the groove region.

公开(公告)号：US20230047019A1

公开(公告)日：2023-02-16

申请号：US17784386

申请日：2020-12-07

Applicant: Hilti Aktiengesellschaft

Inventor： Florian GOETZ

IPC: B23B31/00 ,  B23B31/107 ,  B23B31/12

Abstract: A device for transmitting a torque produced by a drill to a drill bit includes a shank and a tool fitting. The shank has a first outer conical region, a groove region, and a second outer conical region and has longitudinal grooves. The tool fitting has a basic body which has a rotary driving region with outer rotary driving grooves, an intermediate element which has an inner driver region with inner rotary drivers and an outer driver region with outer rotary drivers, and a locking device. In the connected state, the inner rotary drivers engage in the longitudinal grooves and the outer rotary drivers engage in the outer rotary driving grooves. Lower rotary drivers are arranged on the base surface of the intermediate element where the lower rotary drivers, in the connected state, interact with lower rotary driving grooves in the rotary driving region of the basic body.

公开(公告)号：US20230061987A1

公开(公告)日：2023-03-02

申请号：US17784384

申请日：2020-12-07

Applicant: Hilti Aktiengesellschaft

Inventor： Florian GOETZ

IPC: B23B45/00

Abstract: A device for transmitting a torque from a drill to a drill bit includes a shank and a tool fitting. The shank has a first outer conical region, a groove region, and a second outer conical region and has first longitudinal grooves and second longitudinal grooves. The tool fitting has a basic body which has first outer rotary driving grooves, an intermediate element which has first inner rotary drivers, second inner rotary drivers, and first outer rotary drivers, and has a locking device. In the connected state, the first inner rotary drivers engage in the first longitudinal grooves, the second inner rotary drivers engage in the second longitudinal grooves, and the first outer rotary drivers engage in the first outer rotary driving grooves.