Stop mechanism for effectively triggering microswitch and protecting electrical element

Abstract

The invention relates to a stop mechanism for effectively triggering a microswitch and protecting an electrical element. The stop mechanism comprises a stop pin and a stop piece, wherein the stop pinis a cross-shaped triggering stop block, an upper contact table and a lower contact table are formed in the middle of the upper surface and the middle of the lower surface of the cross-shaped triggering stop block respectively, and a left stop table and a right stop table are arranged at the left side and the right side of the cross-shaped triggering stop block respectively; the stop piece comprises a segmented mechanical stop boss and the microswitch, a boss opening is formed in the center of the segmented mechanical stop boss, and a triggering convex head of the microswitch is located in theboss opening; and the cross-shaped triggering stop block, the segmented mechanical stop boss and the microswitch are installed on an internal framework and an external framework in a corresponding mode. According to the stop mechanism, through redesign of the characteristics and relative installation position of the stop mechanism, effective triggering of the microswitch is guaranteed, and effective stop between the rotary frameworks and effective protection of the electrical element are realized.

Description

technical field [0001] The invention relates to the technical field of inertial navigation frame rotation control, in particular to a stopper mechanism that effectively triggers a microswitch and protects electrical components. Background technique [0002] Frame rotation is an important method for inertial navigation equipment platform stabilization or error modulation. For the signal transmission between the frames with continuous rotation around the axis, it is usually realized by mechanically conductive slip rings, such as figure 1 As shown, the inner frame member 2 is driven by the torque motor member 3, and rotates in the outer frame member 1 around the rotating shaft member 4. At this time, the rotating shaft member 4 is equipped with a mechanical conductive slip ring, and the components 5 and 1 are not installed. The stop mechanism formed by the piece 6. [0003] However, the mechanical conductive slip ring is expensive, and the reliability problem often occurs due...

AI Technical Summary

Problems solved by technology

Although this solution solves the problem of damage to the torque motor and micro switch to a certain extent, it also has the following disadvantages in assembly and use: one is to realize the effective triggering of the micro switch part 9, that is, to satisfy the action of the micro switch part 9 Stroke range (the action stroke range of small size and precision micro switches is generally 0.3 ~ 0.6mm, and the trigger range is very narrow), the size H must be well controlled, and H is affected by the radius of rotation R of the internal frame 2 (usually can reach 200 ~300mm), the diameter Φ of the cylindrical stopper pin 7 and the contact extension dimension L when the micro switch 9 is actually triggered, it is very difficult to control the tolerance within the range of 0.3mm, and it is difficult to effectively trigger the micro switch 9. That is, if the action stroke is not enough, it cannot be triggered. If the action stroke is too large, the contact of the micro switch will be directly damaged; the second is that the trigger of the micro switch 9 is a lateral trigger, and the reliability of the trigger itself is poor.

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