Sensor Assembly Mounting Without Bumper Holes
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Solution Overview
Problem
Existing sensor mounting methods for vehicles, such as those using ultrasonic sensors, are complex and require forming holes in the bumper, which compromises the external appearance and assembly efficiency.
Innovation Solution
A sensor part with a vibrating member and a case that allows for simple and reliable mounting to a target member without forming a hole, utilizing a first assembly with a temporary retaining portion and a fixing portion, and a second assembly with a circuit board for electrical connection, enabling separate fixation and positioning for efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the vibrating member and case are individually positioned and attached to the back side of the bumper, then the sensor can be mounted without forming a hole in the bumper, but the assembly work becomes highly complex
Solution Approach 1:
The patent combines the vibrating member and case into a single integrated assembly unit. The case is designed to house the vibrating member, circuit board, and other components together, allowing the entire sensor assembly to be mounted as one piece to the bumper, thereby simplifying the assembly process while maintaining the benefit of not requiring holes in the bumper.
Solution Approach 2:
The sensor assembly is segmented into functional modules (vibrating member, case, circuit board) that are pre-assembled and positioned relative to each other. This modular segmentation allows for easier handling and mounting as a unified assembly, reducing the complexity of on-site assembly work.
2Ease of manufacture
If the vibrating member is exposed to the outside by forming a hole in the bumper, then the mounting is straightforward, but the external appearance is impaired
Solution Approach 1:
Instead of mounting the vibrating member directly to the bumper surface or through holes, the invention inverts the approach by mounting the case to the back side of the bumper and having the vibrating member extend through or contact the bumper from the interior side. This allows the bumper exterior to remain intact and aesthetically pleasing while achieving functional mounting.
3Productivity
If the first case and vibrating member are fixed simultaneously to the target member, then the process is faster, but the fixation reliability decreases
Solution Approach 1:
The case is designed with pre-formed fixing portions (such as adhesive layers or mechanical fixing structures) that are prepared in advance. The vibrating member is also pre-positioned within the case with its fixing portions ready. This preliminary preparation allows for reliable fixation when the assembly is mounted, ensuring that each component is properly secured without compromising assembly speed.
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 solution simplifies the mounting process, ensures reliable fixation, and protects the vibrating member and circuit board, while maintaining the bumper's appearance by avoiding hole formation and enhancing assembly efficiency.
Implementation Method 1
An ultrasonic sensor attached to a bumper or the like detects an obstacle or the like by causing a vibrating member to generate an ultrasonic wave and detecting a reflected wave
Data Source
AI summary
Provided is a sensor part having a vibrating member and a mounting method therefor that allows the sensor part to be mounted to a target member such as a bumper in a simple, efficient and reliable manner. The sensor part includes a first assembly (3) including a tubular first case (5), a vibrating member (7) temporarily retained by the first case, and a pressing member (12) slidably supported in the first case, and a second assembly (4) including a second case (34) to be connected to the first case, and a circuit board (35) for controlling the vibrating member. After the first case is fixed to the target member, the pressing member is pushed so as to release the vibrating member from the temporal retention, and press the vibrating member against the target member.