{
  "$type": "site.standard.document",
  "description": "A tension balancer (1) is disposed between an overhead line (2) and a support (3), and maintains the tension of the overhead line (2). The tension balancer (1) is provided with an outer housing (20), an inner movable portion (30), a coil spring, and a pivotable connection portion (60). The outer…",
  "path": "/patents/986789",
  "publishedAt": "2013-09-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60M1/20",
    "NHK SPRING CO LTD [JP]"
  ],
  "textContent": "A tension balancer (1) is disposed between an overhead line (2) and a support (3), and maintains the tension of the overhead line (2). The tension balancer (1) is provided with an outer housing (20), an inner movable portion (30), a coil spring, and a pivotable connection portion (60). The outer housing (20) formed in a tube-like shape is pivotably supported at the lower end thereof by the support (3) and is provided so that the outer housing (20) can be turned over. The inner movable portion (30) is provided in such a manner that the inner movable portion (30) is inserted through the outer housing (20), protrudes from the upper end of the outer housing (20), and can extend and retract in the axial direction of the outer housing. The coil spring (40) is housed within the outer housing (20) and presses the inner movable portion (30) in the direction in which the inner movable portion (30) retracts. The pivotable connection portion (60) has a fulcrum (82) which is pivotably supported by the support (3), a movable-portion connecting point (84) to which the upper end of the inner movable portion (30) is connected, and an overhead line connecting portion (86) to which the overhead line for electric railway cars is connected, and the pivotable connection portion (60) is provided so that the pivotable connection portion (60) can pivot about the fulcrum (82).",
  "title": "TENSION BALANCER"
}