Multi-degree-of-freedom large-tolerance circular self-floating connector

Abstract

The present invention provides a multi-degree-of-freedom large-tolerance circular self-floating connector. The connector comprises a floating plug and a fixed socket which can be in butt joint with each other, the floating plug comprises a plug shell, a clamping ring, a check ring, a floating sleeve and a floating shell, the outer ring of the plug shell is sleeved with the floating sleeve, the floating sleeve is slidably installed in an inner cavity of the floating shell, and one end of the floating shell is provided with the check ring; a corrugated spring is arranged between the floating sleeve and the baffle ring, the check ring is fixedly installed at the other end of the floating shell through a clamping ring, a flange plate is arranged on the outer ring of the plug shell, the flangeplate is limited between the check ring and the floating sleeve, and the floating sleeve abuts against the flange plate under the elastic action of the corrugated spring. According to the multi-degree-of-freedom large-tolerance circular self-floating connector provided by the invention, the floating tolerance range is expanded through structural and elastic force setting optimization, and the requirement of rapid development of a space docking technology is met.

Description

technical field [0001] The invention belongs to the technical field of electrical connectors, in particular to a multi-degree-of-freedom and large-tolerance circular self-floating connector. Background technique [0002] For space station electrical connectors, since space station equipment has been in a state of weightlessness for a long time, the stability of the two butt terminals is poor during docking, and docking deviations such as translation and deflection often occur, such as figure 1 As shown, the alignment difference during docking includes △α (rotation angle around the X-axis), △β (allowed rotation angle between panels), △ρ (translational movement distance along the plane where the Y and Z axes are located, that is, the distance between panels Translation distance), △X (overtravel along the docking axis), it is necessary to design a special tolerance guide structure to compensate the above-mentioned alignment difference, such as the Chinese patent with the public...

AI Technical Summary

Problems solved by technology

There are 4 stepped holes evenly distributed in the front and back rows on the sleeve. Push rods and small springs are arranged in the stepped holes. The pressure ring outside the sleeve compresses the small springs and presses the push rods against the outer circle of the plug housing. In the arc pit, the step of the plug housing is located in the gap between the retaining ring and the sleeve. Through the conical chamfer of the plug mating end, the cooperation of the outer key and the conical hole and keyway of the mating end of the socket, the housing is guided during mating. And key positioning, with six-degree-of-freedom floating function of displacement and rotation in X, Y, and Z directions, and centering and reset function in the unmated state, but the structure that pushes the push rod against the plug housing through the spring realizes △α at the same time , △β and △ρ tolerances, so that the tolerance capabilities of the three restrict each other, such as figure 2 As shown, when the plug housing (equivalent to the plug housing 1) rotates around the X-axis, the arc-shaped pit of the plug housing will push back against the push rod (equivalent to the spring cap 8), and when the push rod completely withdraws from the arc The pit will cause the plug shell to come out, which will lead to the failure of the positioning of the plug shell around the X-axis rotation direction, and the failure to achieve docking or even misplaced docking damage to the connector leading to serious accidents. In order to avoid the above situation, the retraction stroke of the push rod It must be smaller than the depth of the arc pit. In the prior art, the wall thickness of the plug shell is only 1.65mm, and the depth of the arc pit is only 1.2mm. Considering the safety margin, the retraction stroke of the push rod can only be controlled at the level of 0.9mm~1mm , so that the translation level between the plates is only △ρ=0.9mm~1mm, and the flange and the sleeve are positioned through the keyway, the sleeve and the flange are relatively fixed, and the push rod is pressed in the arc recess of the outer circle of the plug housing. The push rod is also restricted in the sleeve, resulting in a small rotation range of the plug housing around the X-axis, and only a rotation range of △α=±0.9° can be realized; also for △β, the horizontal translation limit between the plates plus Due to the limited rotation capacity of the push rod, the deflection level between the plates is only △β=±0.9°; at the same time, the axial distance between the retaining ring and the flange has not been optimized, resulting in the axial overtravel level of the existing technology Only △X=1.5mm, the parameter level of the existing technology limits the development of space station docking technology, especially △α is too small to meet the needs of rapid development of space docking technology requirements

[0003] In addition, when the floating plug and the fixed socket are docked, the force provided by the docking device is much greater than the mating force of the floating plug and the fixed socket. When the mating direction is skewed, it is easy to hold back the force so that the mating force increases rapidly far beyond the design range. In the prior art, the elastic force of the small spring has not been optimized for matching, resulting in slow steering response. In the slightest, the guiding structure may be scratched, affecting the service life, and in severe cases, the electrical connector may be damaged, resulting in serious losses. At the same time, the elastic force of the spring has not been matched. Sexual optimization design, if the elastic force of the retracting spring is too small, the floating plug will start to recede before it is mated during docking, resulting in poor contact and seriously affecting the signal transmission; The floating plug does not retreat to give way, the floating plug lacks enough space to adjust the docking posture, it is easy to hold back the force and the mating force increases rapidly, and there is a risk of damage to the electrical connector

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