US-20260124729-A1 - Tool Clamping Device and Oscillating Multifunction Tool

US20260124729A1US 20260124729 A1US20260124729 A1US 20260124729A1US-20260124729-A1

Abstract

A tool clamping device for an oscillating multifunction tool includes (i) at least one tool mounting unit, (ii) at least one actuation unit to secure a tool or release the tool from the tool mounting unit, and (iii) at least one damping element arranged between the actuation unit and the tool mounting unit. The dampening element is formed as an elastomer.

Inventors

Marcell Boldizsar Tarczali
Adam Laszlo Krokos
Manuel Tobias Gross

Assignees

ROBERT BOSCH GMBH

Dates

Publication Date: 20260507
Application Date: 20251105
Priority Date: 20241107

Claims (11)

1 . A tool clamping device for an oscillating multifunction tool, comprising: at least one tool mounting unit; at least one actuation unit configured to secure a tool or release the tool from the at least one tool mounting unit; and at least one dampening element arranged between the at least one actuation unit and the at least one tool mounting unit, wherein the at least one dampening element is formed as an elastomer.
2 . The tool clamping device according to claim 1 , wherein the at least one dampening element comprises a disk-shaped base body.
3 . The tool clamping device according to claim 1 , wherein the at least one dampening element comprises a base body, the maximum transverse extension of which corresponds at least substantially to a transverse extension of the at least one tool mounting unit and/or the at least one actuation unit that is parallel thereto.
4 . The tool clamping device according to claim 1 , wherein: the at least one dampening element comprises at least one mounting positive-locking element, and the at least one tool mounting unit and/or the at least one actuation unit comprises a corresponding mounting positive-locking element.
5 . The tool clamping device according to claim 1 , wherein the at least one dampening element comprises a receiving recess configured to receive a fixing element of the at least one tool mounting unit and/or the at least one actuation unit.
6 . The tool clamping device according to claim 5 , wherein the at least one dampening element comprises at least one protrusion corresponding to the receiving recess as the mounting positive-locking element.
7 . The tool clamping device according to claim 1 , wherein the at least one dampening element is configured to form at least one mounting positive-locking element, which breaks a rotational symmetry of the at least one dampening element with respect to an axis perpendicular to a main extension plane of the at least one dampening element.
8 . The tool clamping device of claim 1 , wherein the at least one dampening element has a hardness of between 40 and 60 Shore A in accordance with ISO 7619-1.
9 . The tool clamping device according to claim 1 , wherein the at least one dampening element is made of a rubber.
10 . An oscillating multifunction tool, comprising: at least one tool clamping device according to claim 1 ; and at least one drive unit configured to drive a tool that is secured to the at least one tool clamping device.
11 . A method of assembling the tool clamping device according to claim 1 .

Description

This application claims priority under 35 U.S.C. § 119 to application no. DE 10 2024 210 699.2, filed on Nov. 7, 2024 in Germany, the disclosure of which is incorporated herein by reference in its entirety. BACKGROUND A tool clamping device for an oscillating multifunction tool, with at least one tool mounting unit and with at least one actuation unit for securing a tool or releasing the tool from the tool mounting unit and with at least one dampening element arranged between the actuation unit and the tool mounting unit, has already been proposed. SUMMARY The disclosure proceeds from a tool clamping device for an oscillating multifunction tool, with at least one tool mounting unit and with at least one actuation unit for securing a tool or releasing the tool from the tool mounting unit and with at least one dampening element arranged between the actuation unit and the tool mounting unit. It is proposed that the dampening element is designed as an elastomer. The tool is preferably an accessory of the oscillating multifunction tool. The tool clamping device is preferably provided to replace a tool arranged on the tool mounting unit, in particular without any other mechanism, with another tool. The tool mounting unit is preferably provided to couple the tool secured thereto to a drive unit of the oscillating multifunction tool to a force and/or torque transfer from the drive unit to the tool. For example, the tool may be configured as a sawing tool, a milling tool, a polishing tool, or the like. Preferably, the tool mounting unit defines a pivot axis around which the tool is pivotable by the drive unit. The tool mounting unit preferably comprises at least one securing element for a positively-locking and/or force-locking, in particular magnetic and/or friction-locking, securing of the tool to a tool receptacle of the tool mounting unit. For example, the at least one securing element can be configured as an extendable and retractable pin, as a hook, as a gripper, as a clamp, as a magnetic holder, or the like. The actuation unit is preferably provided to move the at least securing element and thereby secure or release the tool. Preferably, the actuation unit comprises at least one actuating element for actuation by a user, for example in the form of a tensioning lever, a slider, a switch, or the like. Alternatively or additionally, the actuation unit comprises at least one actuator to control the actuation unit using a control unit of the oscillating multifunction tool. With respect to the pivot axis, the actuation unit and the dampening element are preferably arranged at one end of the tool mounting unit and the tool receptacle preferably forms an opposite end of the tool mounting unit. The tool mounting unit preferably comprises at least one transmission element for transferring a force and/or a torque from the actuation unit to the at least one securing element. The dampening element is preferably arranged relative to the pivot axis between the actuation unit and the tool mounting unit. Preferably, the dampening element prevents direct physical contact between the actuation unit and the tool mounting unit. The dampening element is preferably provided to ensure a transmission of force and/or torque to the tool mounting unit upon actuation of the actuation unit. The dampening element is preferably provided to counteract a force and/or torque transmission from the tool mounting unit to the actuation unit when the tool is operated. The term “provided” is to be understood in particular as specifically programmed, designed and/or equipped. The fact that an object is provided for a specific function should be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating mode. Due to the embodiment according to the disclosure, vibration dampening between the tool mounting unit and the actuation unit can advantageously be easily achieved. In particular, the dampening element and the actuation unit are advantageously easy to mount and advantageously quick to mount, particularly compared to devices that use a spring as the dampening element. Moreover, vibration dampening properties may advantageously be flexible to suit various embodiments, namely by adjusting raw materials for the elastomer and/or by adjusting the geometry of the dampening element. Moreover, electrical insulation of the actuation unit and the tool mounting unit can be achieved without any further measure. It is further proposed that the dampening element comprises a disk-shaped base body. The base body preferably has a main extension plane, which is at least substantially perpendicular to the pivot axis. A “main extension plane” of a structural unit should be understood to be a plane which is parallel to a largest side surface of a smallest notional cuboid which just completely encloses the structural unit, and in particular extends through the midpoint of the cuboid. The