Clutch Apparatus Latching Elements Assembly

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing coupling devices for motor vehicles face challenges in compact design and easy assembly, particularly in compensating for tilting and radial displacement, while also needing to save space.

Innovation Solution

A coupling device with a disc-shaped coupling member featuring latching elements and counter-latching elements that allow for secure attachment to the second shaft member, facilitating assembly without additional space requirements, and enabling non-rotatable coupling with tolerance for slight displacements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a coupling member with latching elements is used to simplify assembly, then assembly ease is improved, but the device complexity increases due to additional latching components

Engineering Contradiction:
Improveassembly easeVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The coupling member integrates multiple functions into a single component: it provides torque transmission through projections and recesses, enables non-rotatable coupling through the same features, and facilitates easy assembly through integrated latching elements and counter-latching elements. This merging of functions reduces the number of separate components needed while maintaining assembly simplicity.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If the coupling member is designed to compensate for tilting and radial displacement, then adaptability is improved, but the manufacturing precision requirements increase

Engineering Contradiction:
Improvecompensation for misalignmentVSAvoidmanufacturing precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The coupling device incorporates dynamic compensation capabilities through the interaction between the projections and recesses on the coupling member and shaft members. The design allows for slight angular and radial misalignments while maintaining functional coupling, adapting to manufacturing tolerances rather than requiring perfect alignment.

Inventive Principle:
Principle #15Dynamics

3Volume of moving object

If the coupling device is designed to be compact to save space, then volume is reduced, but the ease of assembly deteriorates due to limited space for manipulation

Engineering Contradiction:
Improvecoupling device volumeVSAvoidease of assembly
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The coupling member features an annular edge with latching elements that nest within corresponding counter-latching elements on the shaft member. This nested design allows the coupling components to fit tightly together in a compact arrangement while the latching mechanism provides clear assembly guidance and secure engagement even in limited space.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP3314137B1Clutch apparatus and flap device for a fresh-air system having a clutch apparatus
Publication Date: 2020.02.19 MAHLE INT GMBH
  • EP3314137B1 patent drawingFigure 1
  • EP3314137B1 patent drawingFigure 2
  • EP3314137B1 patent drawingFigure 3~4

AI summary

Clutch apparatus for transmitting a torque from a first shaft member (20) to a second shaft member (22) located axially opposite, having a clutch member (28) which is arranged between the two shaft members (20, 22), wherein the clutch member (28) has a disk-shaped main body (30), wherein the clutch member (28) has an annular rim (32) that encircles the main body (30) and protrudes beyond the main body (30) axially on both sides, wherein first recesses (38) have been introduced into the annular rim (32) on a first side (34) of the clutch member (28), wherein second recesses (40) have been introduced into the annular rim (32) on a second side (36) of the clutch member (28), wherein the first shaft member (20) has a first end portion (24) which has axially extending first protrusions (26), wherein at least one such first protrusion (26) of the first end portion (24) engages in at least one of the first recesses (38) of the clutch member (28), wherein the second shaft member (22) has a second end portion (42) which has axially extending second protrusions (44), wherein at least one such second protrusion (44) of the second end portion (42) engages in at least one of the second recesses (40) of the clutch member (28). In order to make it easier to assemble the clutch apparatus, provision is made for the second end portion (42) to have at least one latching element (48) and for the clutch member (28) to have at least one mating latching element (52), complementary thereto, on the second side (36).