Inhibitor Switch Contact Structure to Limit Movable Member Tilt
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Solution Overview
Problem
The movable member in existing inhibitor switches is easily inclined during movement, leading to increased sliding resistance and wear of the movable and stationary contacts due to local strong pressing, which affects the reliability and longevity of the switch.
Innovation Solution
The inhibitor switch incorporates a movable member with a connection portion connected to a shaft member in a radial direction, featuring a regulation portion that regulates the inclination of the connection portion, reducing the likelihood of tilting and enhancing stability during reciprocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the shaft is connected to the spool from a radial direction in a direction of forward and backward movement of the spool, then the movable member can be simply connected to the spool, but the movable member is easily inclined with respect to the direction of forward and backward movement of the spool, increasing sliding resistance and wear
Solution Approach 1:
The regulation portion is provided in advance on the connection portion to preemptively control and regulate the inclination of the movable member before reciprocation occurs. This preliminary structural arrangement prevents inclination during operation, reducing sliding resistance and wear of the movable contact and stationary contact.
2Productivity
If the movable member reciprocates with the spool, then the inhibitor switch can detect the selection range, but the movable contact is strongly pressed against the stationary contact, increasing sliding resistance and wear
Solution Approach 1:
The regulation portion changes the geometric parameters of the connection portion to regulate the inclination angle of the movable member. By adjusting this parameter, the movable member reciprocates in a more optimal state with reduced inclination, thereby reducing sliding resistance and wear while maintaining the detection function.
Data Source
AI summary
The inhibitor switch includes: a movable member that moves relative to a stationary member in a first axis direction; a movable contact provided at a portion of the movable member facing the stationary member; and a stationary contact provided at a portion of the stationary member facing the movable member, in which the movable member includes a connection portion with a shaft member that moves in a second axis direction according to a selection range, the connection portion is connected to the shaft member in a radial direction of a second axis, and the connection portion is provided with a regulation portion configured to regulate inclination of the movable member with respect to the shaft member.