Transmission Gear Box Bonding Groove for Glue Control
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Solution Overview
Problem
Existing transmission housing sealing methods, which rely on glue at the joint plane, often result in imperfect bonding due to excess glue issues, leading to potential contamination of the lubricating agent and unsightly burrs.
Innovation Solution
Incorporating auxiliary grooves that double the main groove on both the inside and outside to absorb excess glue, combined with snap-fastening mechanisms for easy assembly and retention, ensuring a secure and clean seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single main groove is used for bonding, then the bonding process is simple, but the bonding quality is imperfect and excess glue causes contamination or burrs
Solution Approach 1:
The bonding groove is segmented into a main groove and auxiliary grooves. The main groove receives the primary amount of glue for bonding, while the auxiliary grooves capture excess glue. This segmentation resolves the contradiction by improving bonding quality through better glue control while maintaining relatively simple groove structures that are easy to manufacture.
Solution Approach 2:
The auxiliary grooves act as intermediary elements between the main groove and the housing interior/exterior. They intercept excess glue before it can contaminate the lubricating agent or form burrs outside, thus improving bonding quality without requiring complex sealing or control mechanisms.
2Reliability
If glue is applied at the joint plane, then bonding is achieved, but excess glue contaminates the lubricating agent or forms burrs
Solution Approach 1:
The auxiliary grooves convert the harmful effect of excess glue into a beneficial outcome. Instead of allowing glue to contaminate the lubricating agent or form burrs, the auxiliary grooves deliberately capture the excess glue, transforming what was previously a problem into a controlled feature that ensures clean bonding without contamination.
Solution Approach 2:
The harmful excess glue is extracted from the main bonding groove by the auxiliary grooves. This extraction prevents the glue from causing contamination or burrs while maintaining the primary bonding function, thus improving reliability by eliminating harmful factors.
3Productivity
If snap-fastening means are added to the housing, then assembly is immediate and secure, but the device complexity increases
Solution Approach 1:
The snap-fastening means are merged with the existing housing structure, integrating the retention function into the housing elements themselves. This allows immediate assembly without waiting for glue to set while adding minimal structural complexity, as the snap-fastening features are incorporated directly into the housing design rather than being separate components.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
Transmission gear box (2) comprising two gear box elements (9) that can be positioned pressing against one another and that in the assembled state delimit a cavity (13), a shaft (6) projecting at least partially out of the box, a mechanism (30) for transmitting motion to said shaft (6), this motion transmitting mechanism (30) being housed at least partially inside the cavity (13) of the box (2) and means (16) of connecting the box elements (9) by bonding which means are arranged at the region of pressing-together of said elements (9) referred to as the joining plane (10). The means (16) of connection by bonding comprise a main adhesive-receiving groove (163) surrounding said cavity (13), said main groove (163) comprising a female element (1631) borne by one box element (9) and a male element (1632) borne by the other box element (9), with the male element (1632) fitting at least partially into the female element (1631) when said box elements (9) are in the assembled state. Figure