Gap eliminating part

Abstract

The invention is applied to the technical field of connectors and provides a gap eliminating part. The gap eliminating part comprises a first gap bridging seam and a second gap bridging seam which aresequentially and alternatively arranged, wherein the first gap bridging seam and the second gap bridging seam respectively begin from the two ends of the gap eliminating part and are arranged in theaxial direction of the gap eliminating part, the first gap bridging seam and the second gap bridging seam do not penetrate through the gap eliminating part in the axial direction and penetrate througha lateral wall of the gap eliminating part in the radial direction, and in addition, the first gap bridging seam and the second gap bridging seam have lapped parts on the axial direction. The gap eliminating part disclosed by the invention can make hole shafts achieve close fit without the interference fit situation; furthermore, gaps caused by thermal expansion and cold contraction can be made up, and the hole shafts can keep a fastened state all the time.

Description

technical field [0001] The invention relates to the technical field of connectors, in particular to a gap eliminating piece. Background technique [0002] In the case of power connection or other mechanical connections, the hole-shaft fit is often encountered. In the prior art, an interference fit is usually used to make the hole and the shaft fit tightly. However, there are many defects in the interference fit, such as: 1. The accuracy of the matching holes and shafts is high, otherwise the matching holes and (or) shafts will be excessively deformed or even cracked due to excessive interference, or the matching strength will be weak due to too small interference, thus 2. Even if the hole and shaft fit properly at first, there may be a gap between the hole and shaft during use. Moreover, once the gap is generated, the gap cannot be eliminated, resulting in the easy loosening of the matching structure. For example, in the heat In the case of expansion and contraction, if the...

AI Technical Summary

Problems solved by technology

[0002] In the case of power connection or other mechanical connections, the hole-shaft fit is often encountered. In the prior art, an interference fit is usually used to make the hole and the shaft fit tightly. However, there are many defects in the interference fit, such as: 1. The accuracy of the matching holes and shafts is high, otherwise the matching holes and (or) shafts will be excessively deformed or even cracked due to excessive interference, or the matching strength will be weak due to too small interference, thus 2. Even if the hole and shaft fit properly at first, there may be a gap between the hole and shaft during use. Moreover, once the gap is generated, the gap cannot be eliminated, resulting in the easy loosening of the matching structure. For example, in the heat In the case of expansion and contraction, if the holes and shafts are made of materials with different thermal expansion coefficients, gaps are likely to occur; even if the holes and shafts are made of the same material, gaps are likely to occur due to the difference in heat and heat dissipation between the holes and shafts during heating or cooling (especially in electrical connections. Occasionally, the shape and size of the hole axis are different, and the thermal effect generated by the current is different)

Images