Electronic Sealing Structure for Rear Glass Vibration Isolation
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Solution Overview
Problem
Open-type speakers in electronic devices cause significant vibration in the rear glass due to air compression and expansion, leading to discomfort during music playback and additional noise when mounted on a desk.
Innovation Solution
A sealing structure is implemented between the conductive member and the rear plate of the electronic device, extending along the periphery of the conductive member in a closed curve shape, effectively blocking the transfer of vibration from the open-type speaker to the rear plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an open-type speaker is used in the electronic device, then the speaker unit does not require an additional enclosure structure, but air compression and expansion during speaker operation causes significant vibration in the rear glass
Solution Approach 1:
The internal space of the electronic device is divided into a first space (above the speaker) and a second space (below the speaker) using a partition structure. This segmentation isolates the air compression and expansion effects to the first space, preventing them from being transmitted to the rear glass through the second space, thereby reducing vibration while maintaining the simple open-type speaker design.
Solution Approach 2:
A damping material is introduced as an intermediary element between the speaker and the rear glass. This damping material absorbs and dissipates the vibrational energy generated by air compression and expansion, acting as a mediator that blocks the transmission path of vibration to the rear glass without requiring additional enclosure structures.
2Object-affected harmful factors
If artificial audio tuning is performed to reduce rear glass vibration, then vibration is reduced to a predetermined level, but sound performance of the speaker is degraded
Solution Approach 1:
The harmful vibration transmission path is extracted and isolated from the main audio transmission path. By creating a separate partitioned space and using damping materials specifically targeted at vibration suppression, the solution removes the adverse effect of vibration without altering the speaker's audio output characteristics, thus preserving sound performance.
Solution Approach 2:
The air compression and expansion effects that originally caused harmful vibrations are redirected and contained within the partitioned first space. The damping material converts the harmful vibrational energy into heat through friction and deformation, transforming the harmful effect into a beneficial vibration-damping function while maintaining audio performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The sealing structure significantly reduces the vibration of the rear glass, thereby improving the audio performance of the electronic device without compromising the sound quality, as artificial audio tuning is no longer necessary to reduce vibrations.
Implementation Method 1
the air inside the electronic device is compressed/expanded during the operation of the speaker. The compression/expansion of the air caused by the operation of the upper speaker is transmitted through the medium of air to the entire space inside the electronic device, causing vibration in all parts
Data Source
Figure 1~2
Figure 3
Figure 4A
AI summary
An electronic device may include: a housing including a front plate oriented in a first direction, a rear plate oriented in a second direction opposite the first direction, and a side member enclosing at least a part of a space between the front plate and the rear plate. The electronic device further including a display disposed to be visible through the front plate; a printed circuit board disposed between the display and the rear plate; a support structure having a first face oriented in the first direction and supporting the display and a second face oriented in the second direction and supporting the printed circuit board,; a conductive member disposed between the support structure and the rear plate; and a sealing structure disposed between the conductive member and the rear plate, the sealing structure extending along a periphery of the conductive member and formed in a closed curve shape.