Disc Brake Parking Mechanism Sub-Assembly for Easier Caliper Assembly
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Solution Overview
Problem
Conventional disc brake apparatuses with parking mechanisms face difficulties in assembling components within the cylindrical space, leading to potential damage of the inner peripheral surface and complex assembly operations, especially when using an integrated caliper structure.
Innovation Solution
The design incorporates an anti-rotor side case and a rotor side case with lock claws and resilient arms to securely engage and prevent separation of components during assembly, allowing for easier sub-assembly outside the cylindrical space and reducing the risk of inner surface damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If components of the parking mechanism are assembled inside the cylindrical space, then the integrated caliper structure can be achieved, but the assembly operation becomes troublesome and the inner peripheral surface may be damaged
Solution Approach 1:
The parking mechanism components are preliminarily assembled as a complete sub-assembly unit outside the cylindrical space before being installed into the caliper. This preliminary assembly allows operators to work in a more accessible area, avoiding the confined space inside the cylindrical space, and prevents damage to the inner peripheral surface during the assembly process.
2Ease of manufacture
If the caliper is divided into main part and subpart, then assembly operation becomes easier, but the size and weight of the disc brake apparatus increase
Solution Approach 1:
The parking mechanism is segmented into a sub-assembly unit that can be pre-assembled outside the cylindrical space. This segmentation allows the complex parking mechanism components to be assembled in a more accessible area and then installed as a complete unit into the integrated caliper, combining the benefits of easier assembly with the advantages of an integrated structure.
3Ease of operation
If the sub-assembly unit is assembled outside the cylindrical space, then the assembly operativity is improved, but the components may separate during handling
Solution Approach 1:
A holder is introduced as an intermediary component to temporarily secure the parking mechanism components during the sub-assembly process outside the cylindrical space. The holder maintains the relative positions of the components and prevents separation during handling and installation, allowing for easy assembly operativity while ensuring component stability.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Some of the components of a parking brake mechanism are incorporated between an inner side case (45) and an outer side case (46), the two case (45) and (46) are combined by engaging lock holes (51, 51) and lock claws (55, 55), and an inner side auxiliary assembly (59) is formed. In this state, the diameter of circumscribed circle of the lock claws (55, 55) is configured to be smaller. Then, when the inner side auxiliary assembly (59) is incorporated in the cylindrical space (9a), the two lock claws (55, 55) are engaged with a lock concave (61) which is formed on the inner peripheral surface of the cylindrical space (9a) by making the two lock claws (55, 55) protrude greatly from the outer peripheral surface of the inner side case (45).