Scroll Compressor Terminal Block With Wire-Guided Control Wiring

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Solution Overview

Problem

Conventional scroll compressors face difficulties in securely and easily connecting control wires to external power leads due to manual adjustment requirements, leading to potential mounting errors.

Innovation Solution

A terminal block assembly with a wire guiding part that positions and secures control wires relative to the terminal block, ensuring proper alignment and connection, featuring a body part and wire guiding part made from molded polymer material, with metal inserts and locking nuts for secure electrical connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If control wires are extended from the flexible assembly part without guidance, then the assembly process is simple, but the position of control wires and eyelets cannot be accurately adjusted, leading to mounting errors

Engineering Contradiction:

Improvepositioning accuracy of control wiresVSAvoidcomplexity of terminal block assembly

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The wire guiding part is pre-formed with guiding surfaces and positioning structures that automatically guide the control wires to the correct positions during assembly. This preliminary preparation of guiding structures eliminates the need for manual adjustment while ensuring precise positioning of control wires and eyelets relative to the terminal block and compressor power terminals.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The wire guiding part acts as an intermediary component between the flexible assembly part and the terminal block. It provides a structured interface that channels and positions the control wires, transforming the unguided wire extension into a precisely positioned connection path without requiring complex manual adjustment procedures.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If manual adjustment of control wires is required during connection, then flexibility in positioning is achieved, but the connection process becomes difficult and time-consuming

Engineering Contradiction:

Improveease of electrical connectionVSAvoidmounting time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The wire guiding part is pre-configured with guiding surfaces, positioning ribs, and alignment features that automatically direct the control wires to their correct positions during assembly. This preliminary preparation eliminates the need for manual adjustment operations, making the connection process straightforward and significantly reducing mounting time.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The wire guiding part enables the assembly process to be self-guiding, where the structure itself directs the control wires into the correct positions without requiring operator intervention for adjustment. The positioning structures automatically align the wires and eyelets with the terminal block and compressor power terminals, allowing workers to simply connect components without time-consuming manual positioning.

Inventive Principle:

Principle #25Self-service

3Manufacturing precision

If control wires are molded in a flexible assembly part, then flexibility and ease of attachment are achieved, but the position of control wires cannot be precisely controlled relative to terminal blocks

Engineering Contradiction:

Improvepositioning precision of control wiresVSAvoidflexibility of control wire assembly

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The assembly is divided into distinct functional segments: the flexible assembly part that provides adaptability and ease of attachment, and the wire guiding part that provides precise positioning. This segmentation allows each component to fulfill its specific function - the flexible part handles attachment variability while the guiding part ensures positioning precision, combining both benefits without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the assembly have different properties tailored to their functions. The flexible assembly part maintains flexibility and adaptability for attachment, while the wire guiding part introduces rigid positioning structures and guiding surfaces specifically where precision positioning is needed. This local differentiation of properties allows the system to simultaneously achieve both flexibility and precision.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11920589B2Scroll compressor including an electrical box containing a wire guiding part

Publication Date: 2024.03.05 DANFOSS COMML COMPRESSORS SA

AI summary

The scroll compressor (1) includes a hermetic casing (2); an electric motor (12) arranged within the hermetic casing (2); an electrical box (14) attached to an outer surface of the hermetic casing (2); and compressor power terminals (13) insulated from the hermetic casing (2) and electrically connected to the electric motor (12), the compressor power terminals (13) protruding in the electrical box (14), the electrical box (14)] containing a control module (15) configured to control the electric motor (12), control wires (16) connected to the control module (15), and a terminal block assembly (17) configured to electrically connect the compressor power terminals (13) and the control wires (16) to external power leads (18) of an external power source. The terminal block assembly (17) includes a body part (19) and a wire guiding part (21) which is configured to guide and position the control wires (16) in predetermined connection positions with respect to the body part (19).