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EP-4740718-A1 - ELECTRIC TOOL AND METHOD FOR PRODUCING AN ELECTRIC TOOL

EP4740718A1EP 4740718 A1EP4740718 A1EP 4740718A1EP-4740718-A1

Abstract

An electrical device (500) with at least one circuit board (530) and a method for manufacturing the electrical device (500) with the at least one circuit board (530) are proposed. For mounting the at least one circuit board (530) in the electrical device (500), a carrier (510) for the at least one circuit board (530) and at least one carrier holding means are used, which enable pre-assembly of the at least one circuit board (530) in a pre-assembly position on a housing section, e.g., a housing part (520), of the electrical device (500). After pre-assembly in the pre-assembly position, the carrier (510) with the at least one pre-assembled circuit board (530) is moved to a final position in the device (500) relative to the housing section on which the pre-assembly of the at least one circuit board (530) took place. The proposed design of the electrical working device (500) and the proposed method make it easier and therefore faster and more reliable to mount the at least one circuit board (530) in the electrical working device (500).

Inventors

  • Eiber, Karl-Philipp
  • BERGER, CHRISTIAN
  • Peters, Tanja
  • Gerk, Nicolai

Assignees

  • Andreas Stihl AG & Co. KG

Dates

Publication Date
20260513
Application Date
20241107

Claims (15)

  1. Electrical work device (500), e.g. a service robot, in particular a mowing, sweeping or vacuuming robot, with a housing, a carrier (100; 200; 300; 510) for at least one circuit board (110; 210; 400; 530) and at least one carrier holding means, wherein the at least one carrier holding means is designed to hold the carrier (100; 200; 300; 510) directly on a section of the housing of the electrical work device (500) in a pre-assembly position in order to enable pre-assembly of the at least one circuit board (110; 210; 400; 530) on the carrier (100; 200; 300; 510) in the pre-assembly position; and wherein the carrier (100; 200; 300; 510) is designed to be moved with the at least one circuit board (110; 210; 400; 530) from the pre-assembly position to a final position after completion of the pre-assembly, wherein the movement of the carrier (100; 200; 300; 510) from the pre-assembly position to the final position is relative to the housing section for mounting the at least one circuit board (110; 210; 400; 530) in the electrical working device (500).
  2. Electrical work device (500) according to the preceding claim, characterized by that the carrier (100; 200; 300; 510) has at least one retaining means and that the at least one retaining means is designed to attach the carrier (100; 200; 300; 510) in the final position directly to the housing section of the electrical working device (500).
  3. Electrical working device (500) according to one of the preceding claims, characterized by that at least one carrier holding means is designed to mount the carrier (100; 200; 300; 510) on the housing section of the electrical working device (500) in the pre-assembly position in a displaceable, rotatable and/or pivotable manner.
  4. Electrical working device (500) according to one of the preceding claims, characterized by that the electrical working device (500) has a further carrier holding means (330) and that the pre-assembly position includes a preferred pre-assembly position, wherein the further carrier holding means (330) is designed to hold the carrier (100; 200; 300; 510) in the preferred pre-assembly position.
  5. Electrical work device (500) according to one of the preceding claims, characterized by a guiding means designed to move the carrier (100; 200; 300; 510) with the at least one circuit board (110; 210; 400; 530) after completion of pre-assembly from the pre-assembly position on the housing section of the electrical working device (500) to a final position relative to the housing section of the electrical working device (500).
  6. Electrical working device (500) according to one of the preceding claims, characterized by that the at least one carrier holding means is a guide sleeve, in particular a screw sleeve (130; 230; 320), or part of a guide sleeve, in particular a screw sleeve (130; 230; 320).
  7. Electrical work device (500) according to one of the preceding claims characterized by at least one carrier holding device counterpart, wherein the at least one carrier holding device and the at least one carrier holding device counterpart are designed to cooperate to hold the carrier (100; 200; 300; 510) directly on the housing section of the electrical working device (500) in the pre-assembly position.
  8. Electrical work device (500) according to the immediately preceding claim, characterized in that, that the pre-assembly position on the housing section is clearly defined by the design of the at least one carrier holding device and the at least one carrier holding device counterpart.
  9. Electrical work device (500) according to the immediately preceding claim, characterized in that, that the at least one carrier holding element counterpart is a guide pin, in particular a screw boss (340), or part of a guide pin, in particular a screw boss (340).
  10. Electrical working device (500) according to one of the preceding claims, characterized by that the carrier (100; 200; 300; 510) is designed to absorb insertion forces.
  11. Electrical working device (500) according to one of the preceding claims, characterized by that the carrier (100; 200; 300; 510) is made of one or more materials and/or is designed to shield against electromagnetic interference and/or to dissipate excess heat.
  12. Method for manufacturing an electrical work device (500), e.g. a service robot, in particular a mowing, sweeping or vacuuming robot, with at least one circuit board (110; 210; 400; 530) comprising the following steps: - Placing a carrier (100; 200; 300; 510) for the at least one circuit board (110; 210; 400; 530) in a pre-assembly position on a housing section of the electrical working device (500); - Pre-assembling at least one circuit board (110; 210; 400; 530) onto the carrier (100; 200; 300; 510) in the pre-assembly position on the housing section; and - Moving the carrier (100; 200; 300; 510) into an end position of the electrical working device (500), wherein the moving of the carrier (100; 200; 300; 510) relative to the housing section for mounting the at least one circuit board (110; 210; 400; 530) in the end position.
  13. Method according to the immediately preceding claim, characterized by that the carrier (100; 200; 300; 510) is mounted in the pre-assembly position so as to be rotatable or pivotable about an axis (360).
  14. Method according to one of the two immediately preceding claims, characterized by that the pre-assembly position has a preferred pre-assembly position and that the carrier (100; 200; 300; 510) is mounted rotated to the final position in the preferred pre-assembly position.
  15. Method according to any one of claims 12 to 14, characterized by that the carrier (100; 200; 300; 510) is moved into the final position by a rotary-thrusting movement.

Description

Field of invention The invention relates to electrical work equipment and methods for manufacturing an electrical work equipment, in particular devices and methods for mounting at least one circuit board in an electrical work equipment, e.g. a service robot, in particular a mowing, sweeping or vacuuming robot. State of the art Electrical work equipment, e.g., service robots such as mowing, sweeping or vacuuming robots, are generally known, for example from EP 3 412 129 B1 or EP 4 014 710 B1 Accordingly, methods for manufacturing an electrical device, in particular devices and methods for assembling at least one circuit board in an electrical device, are also known. Task The object of the invention is to provide methods and devices with which the assembly of at least one circuit board in an electrical device can be carried out more easily and reliably. Solution: To solve the problem, an electrical work device, e.g., a service robot, in particular a mowing, sweeping, or vacuuming robot, is proposed, comprising a housing, a carrier for at least one circuit board, and at least one carrier holding device. The at least one carrier holding device is designed to hold the carrier directly against a section of the housing or housing section of the electrical work device in a pre-assembly position, thus enabling pre-assembly of the at least one circuit board onto the carrier in this pre-assembly position. Furthermore, the carrier is designed to be moved or transported with the at least one circuit board from the pre-assembly position to a final position after pre-assembly is complete. This movement of the carrier from the pre-assembly position to the final position occurs relative to the housing section for mounting the at least one circuit board in the electrical work device. Circuit boards are carriers for electronic components. They are used in many electrical devices to connect to electrical or electronic components, for example, to supply these components with power, control commands, and/or information or data, or to receive power, control commands, and/or information or data from them. The electronic components of a circuit board therefore include connections or connectors, such as plugs or terminal blocks, for electrical connection to the electrical or electronic components of a device. In many cases, they also include control elements, such as switches or microcontrollers, or memory elements for storing programs for control or regulation, for storing sensor data, or for generating characteristic curves for evaluating sensor data. Circuit boards also have interconnects for the electrical connection of the electronic components to each other. The electrical and electronic components of a machine can include electric motors and servo motors. They can also include controls for outputting or displaying information, for manually inputting information or commands, and for communication with other devices, particularly wireless communication. Components for powering other electrical and electronic components of a machine or the electronic components on a circuit board are also included. These can be battery compartments or connectors for an external power supply. Electrical machines often incorporate sensors, such as motion, acceleration, humidity, or temperature sensors, which are connected to a circuit board. For the stable and precise positioning of circuit boards in electrical equipment, mounting brackets can be used. The circuit boards can be attached to these brackets. The brackets with the circuit boards can then be permanently installed at a predetermined position in the equipment and connected there to the electrical or electronic components. To protect against environmental influences, circuit boards can also be mounted on carriers consisting of two halves. The circuit boards can be positioned between and enclosed by these halves. Openings or additional connecting elements in the halves allow for electrical connections to the electrical or electronic components of a device. The halves provide protection against damage during both the assembly and operation of an electrical device. They can also be designed to protect a circuit board between the halves from moisture and other environmental influences. The proposed design allows the at least one circuit board to be initially positioned in a pre-assembly position on the housing section during the assembly of the electrical device and to be held in this position for the duration and purpose of the pre-assembly. This means, for example, that the carrier remains stable and independent in the pre-assembly position. A variety of pre-assembly positions on the housing section or other housing sections of the electrical device are generally suitable for this purpose. These include, in particular, positions that allow easy access to the connecting elements of the at least one circuit board. In one embodiment, a position is chosen from which all connecting elements are