Mounting Device With Stop Structure For Threaded Positioning
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Solution Overview
Problem
Existing devices for mounting an attachment part to a carrier part face challenges in achieving high pull-out resistance and preventing false positioning of threaded structures, leading to impaired manageability and drivability.
Innovation Solution
A stop structure is introduced to restrict the movement of the head plate in both directions, with a second leg bearing a complementary threaded structure, and a blocking unit with a stop portion and L-type holding-down means to ensure precise positioning and high pull-out resistance, allowing for standard torque drivability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a head plate with threaded structure is connected to the second leg without a stop structure, then the device can be produced simply, but the position of the threaded structure cannot be determined exactly, leading to false positioning and impaired manageability
Solution Approach 1:
A stop structure is introduced as an intermediary element between the head plate and the second leg. This stop structure includes a stop portion extending from the head plate toward the second leg, which interacts with the holding-down means to precisely determine the position of the threaded structure on the head plate, thereby eliminating false positioning while maintaining simple production
Solution Approach 2:
The stop structure is designed to be self-calibrating through the interaction between the stop portion and the holding-down means. The L-type holding-down means tongue automatically positions itself relative to the stop portion, ensuring precise positioning without requiring additional complex adjustment mechanisms or external intervention
2Strength
If only one threaded structure is provided on the head plate, then the structure remains simple, but the pull-out resistance of the fastening screw is insufficient
Solution Approach 1:
The connection system is segmented into two separate threaded structures: one on the head plate and another on the second leg. This segmentation allows the fastening screw to engage both threaded structures, creating a distributed connection system that significantly increases pull-out resistance while maintaining relatively simple overall structure
Solution Approach 2:
The solution transitions from a single-point connection to a two-point connection by adding the second threaded structure on the second leg. This dimensional change in the connection architecture (from one location to two locations) doubles the anchoring points, thereby enhancing pull-out resistance without proportionally increasing complexity
3Ease of operation
If the threaded structures are positioned too close to each other, then the structure remains compact, but the fastening screw cannot be driven with standard torque, impairing drivability
Solution Approach 1:
The stop structure performs a preliminary positioning function by pre-establishing the correct distance between the threaded structure on the head plate and the threaded structure on the second leg. This preliminary action ensures that when the fastening screw is driven, the threaded structures are at the optimal distance for standard torque application, preventing both under-torquing and over-torquing
Solution Approach 2:
The stop structure controls the critical parameter of distance between threaded structures. By maintaining this distance within an optimal range, the system ensures that the fastening screw can be driven with standard torque values, making the device easy to operate without requiring special tools or adjusted torque settings
Data Source
AI summary
A device for mounting an attachment part to a carrier part (1) has two mutually opposite legs (2, 3) and an external head plate (14) which are each arranged at a distance from one another. The head plate (14) and the leg (3) adjacent to the head plate (14) have threaded structures (11, 15) which, through an interaction of a blocking unit (16), having a stop portion (17) and an overlap portion (18), with a holding down means (7) and with the leg (3) bearing a threaded structure (11), are arranged at a fixed distance from one another to form an internal thread.