异种材料构件连接结构
By setting connection holes of different diameters and using fasteners with different tightening force values in the connection structure of dissimilar material components, combined with sealant, the problems of stress exceeding limits and buckling deformation caused by temperature changes are solved, achieving stable connection and waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG TIANYIN NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-17
AI Technical Summary
In applications with significant temperature variations, dissimilar material components connected together are prone to stress exceeding limits and buckling deformation due to differences in their coefficients of thermal expansion. In particular, composite structures may experience water leakage issues.
The design incorporates a connection structure for dissimilar material components. By setting connection holes of different diameters on the first and second components and using fasteners with different tightening forces, combined with the use of sealant, the stability and sealing of the connection are ensured.
This effectively avoids buckling of the first component surface and excessive stress around the connection hole, achieving stable connection and waterproof performance of dissimilar material components.
Smart Images
Figure CN224515579U_ABST
Abstract
Claims
1. A connection structure for dissimilar material components, characterized in that: The first component and the second component are included; A plurality of first connecting holes are arranged at the middle region of the first component, and a plurality of second connecting holes are arranged at the non-middle region of the first component; the second component is provided with a third connecting hole corresponding to each first connecting hole, and a fourth connecting hole corresponding to each second connecting hole; wherein the materials of the first component and the second component are different; The first connecting hole and the corresponding third connecting hole are connected by a first fastener, the hole diameter of the first connecting hole is matched with the specification of the first fastener, and the hole diameter of the third connecting hole is not less than the hole diameter of the first connecting hole; The second connecting hole and the corresponding fourth connecting hole are connected by a second fastener, the hole diameter of the second connecting hole is matched with the specification of the second fastener, and the hole diameter of the fourth connecting hole is greater than the hole diameter of the second connecting hole; The pre-tightening force value of the second fastener is less than the pre-tightening force value of the first fastener.
2. The dissimilar material member joint structure according to Claim 1, characterized by: The first component is provided with connecting holes arranged in an array grid, the array grid includes N rows and M columns, and the array grid divides the first component into (N-1)·(M-1) units; the connecting holes in the "cross" region of the middle of the array grid are the first connecting holes, and the connecting holes in the remaining regions of the array grid are the second connecting holes.
3. The dissimilar material member connection structure according to claim 2, characterized by: Each third connecting hole is provided with a first gasket and a gasket, and each first gasket is located on one side of the second component; the first fastener passes through the gasket, the first connecting hole, the third connecting hole, and the first gasket for fastening, and the length or diameter of the first gasket is greater than the hole diameter of the third connecting hole.
4. The dissimilar material member connection structure according to claim 3, characterized by: Each fourth connecting hole is provided with a second gasket and a gasket, and each second gasket is located on one side of the second component; the second fastener passes through the gasket, the second connecting hole, the fourth connecting hole, and the second gasket for fastening, and the length or diameter of the second gasket is greater than the hole diameter of the fourth connecting hole.
5. The dissimilar material member connection structure according to Claim 4, characterized by: The hole diameter of the third connecting hole is at least 1mm greater than the hole diameter of the first connecting hole, and the hole diameter of the fourth connecting hole is at least 2mm greater than the hole diameter of the second connecting hole.
6. The dissimilar material member joint structure according to Claim 2, characterized by: Each unit is provided with a reinforcing rib; the first component is a plate structure, the second component is a frame structure, the positions of the longitudinal and transverse beams of the frame structure correspond to the positions of the first connecting holes and the second connecting holes respectively, and the positions corresponding to the reinforcing ribs of the frame structure are hollow structures.
7. The dissimilar material member joint structure according to Claim 6, characterized by: The reinforcing rib on each unit is in a mesh shape.
8. The dissimilar material member joint structure according to Claim 1, characterized by: The first fastener and the second fastener are rivet fasteners or threaded fasteners.
9. The dissimilar material member joint structure according to Claim 8, characterized by: The first component is provided with a first sealant corresponding to the second fastener, and the first sealant wraps the bolt head or the rivet head of the second fastener.
10. The dissimilar material member joint structure according to Claim 1, characterized by: When the number of first components is not less than two, a second sealant is arranged at the joint seam between the adjacent two first components, and a third sealant is arranged at the positions corresponding to the two sides of the joint seam between the first component and the second component.