Compact Loudspeaker Throat Structure for Thin Terminals
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Solution Overview
Problem
Traditional loudspeaker horns require significant physical space, posing implementation challenges in thin devices like mobile phones, tablets, and vehicles, where space is limited.
Innovation Solution
A loudspeaker design with a throat cavity having staggered first and second mouths, allowing the throat to be positioned inside the loudspeaker body, reducing its overall space requirements while maintaining acoustic performance through optimized air flow and resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a traditional horn structure is used to increase loudspeaker efficiency, then sound amplification is improved, but the physical space required increases significantly
Solution Approach 1:
The throat is positioned inside the loudspeaker body, with the throat cavity nested within the containing cavity. The first mouth communicates with the sound hole and front cavity, while the second mouth communicates with the external environment, creating a nested configuration that reduces overall space requirements while maintaining horn-type sound amplification efficiency
Solution Approach 2:
The throat structure utilizes three-dimensional spatial arrangement by positioning the first and second mouths at different locations and orientations relative to the loudspeaker body. This dimensional optimization allows the horn function to be achieved within a compact footprint by exploiting vertical and lateral space efficiently
2Volume of moving object
If the loudspeaker is scaled down to fit portable devices, then space consumption is reduced, but implementation challenges increase
Solution Approach 1:
The loudspeaker is divided into distinct functional components: the transducer, the containing cavity with front and rear sections, the sound hole, and the separately positioned throat structure. This segmentation allows each component to be optimized and manufactured independently, then assembled together, simplifying the manufacturing process for compact designs
Solution Approach 2:
The throat structure serves multiple functions simultaneously: it acts as a sound amplification channel, a structural support element, and a space-saving design feature. The first mouth serves both as an acoustic opening and a structural connector, while the second mouth provides external sound output. This multi-functionality reduces the number of separate components needed, easing manufacturing
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 design effectively compresses the loudspeaker's space usage, enhances sound amplification, and minimizes distortion, making it suitable for devices with limited internal space.
Implementation Method 1
a transducer... The transducer is accommodated in the containing cavity separated by the transducer into a front cavity and a rear cavity
Implementation Method 2
the throat cavity is in communication with the front cavity via the first mouth and the sound hole, and in communication with an external portion of the throat via the second mouth
Data Source
AI summary
Disclosed is a loudspeaker and a terminal device. The loudspeaker includes: a loudspeaker body having a containing cavity; a transducer accommodated in the containing cavity separated by the transducer into a front and a rear cavity along the first direction, wherein a sound hole is provided on the loudspeaker body, and the sound hole is in communication with the front cavity; and a throat having a throat cavity, and a first and a second mouth arranged sequentially along the second direction. The first mouth corresponds to the sound hole, the throat cavity is in communication with the front cavity via the first mouth and the sound hole, and the throat cavity is in communication with the outside via the throat and the second mouth. The present disclosure can compress the space occupied by loudspeaker, which is suitable for a terminal device with certain internal space and a limited height.