Rotary Joint Accessory for Laser Receiver Alignment

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Solution Overview

Problem

Existing laser receivers have unstable positioning on work surfaces due to a narrow contact surface, and their angular position is fixed, making it difficult to accurately align the sensor element with the laser beam.

Innovation Solution

An accessory for a laser receiver featuring a base plate with a rotary joint that allows the laser receiver to be rotated and locked at various angles, enabling stable positioning and precise alignment with the laser beam.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the laser receiver is positioned directly on the work surface using a narrow support element, then the device structure remains simple, but the positioning stability deteriorates

Engineering Contradiction:

Improvepositioning stabilityVSAvoiddevice structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The accessory divides the positioning function into separate components: a base plate for stable contact with the work surface and a connection device for holding the laser receiver. This segmentation allows each component to be optimized independently - the base plate provides large surface area for stability while the connection device provides adjustment capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The accessory acts as an intermediary device between the work surface and the laser receiver. The base plate with large surface area mediates the contact with the work surface to provide stability, while the connection device mediates the connection to the laser receiver to enable angular adjustment.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If the laser receiver has a fixed angular position, then the device structure remains simple, but the alignment precision with the laser beam deteriorates

Engineering Contradiction:

Improvealignment precisionVSAvoiddevice structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The connection device incorporates a rotary joint that allows the laser receiver to be rotated dynamically to different angular positions. This dynamic capability enables precise alignment with the laser beam by adjusting the angle, while the lockable mechanism maintains the selected position during measurement.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The rotary joint allows changing the angular parameter of the laser receiver relative to the base plate. By adjusting this angular parameter, the sensor element can be aligned perpendicularly to the laser beam for precise measurement, and the lockable mechanism preserves this optimized parameter setting.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If the support element has a narrow contact surface, then the device structure remains simple, but the positioning stability on the work surface deteriorates

Engineering Contradiction:

Improvepositioning stabilityVSAvoidcontact surface area

Core Design Contradiction:

Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

The base plate extends the contact area in the horizontal plane (another dimension) rather than increasing the height or using a complex support structure. This large surface area base plate provides stable positioning on the work surface by distributing the load over a wider area.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12313405B2Accessory for a laser receiver for transferring a laser line

Publication Date: 2025.05.27 HILTI AG

AI summary

Accessory (30) for a laser receiver for transferring a laser line to a work surface, including a base plate (35) with a front side and a rear side, with which the accessory (30) is able to be arranged on the work surface, a connection device (36) for connecting the laser receiver to the accessory (30), and a rotary joint (37) that is arranged between the base plate (35) and the connection device (36), wherein the connection device (36) is rotatable about an axis of rotation (39) relative to the base plate (35) between a first angle and a second angle.