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EP-4586293-B1 - WIRING STRUCTURE AND SWITCHING DEVICE

EP4586293B1EP 4586293 B1EP4586293 B1EP 4586293B1EP-4586293-B1

Inventors

  • HUAN, Zhiping
  • WANG, Yuanzhong
  • Tian, Haifeng
  • LI, ZHEN
  • HUANG, CHENG

Dates

Publication Date
20260513
Application Date
20241230

Claims (7)

  1. A wiring structure (1), comprising: a housing (11); a wiring frame (12), movably arranged in the housing (11) in an up-and-down direction; a wiring board (14), extending into the wiring frame (12) from a first side perpendicular to the up-and-down direction, the wiring board (14) being fixed relative to the housing (11); a bolt (13), penetrating through a top plate of the wiring frame (12) and configured to drive the wiring frame (12) to move upward through a downward rotary movement; an external wire (3), extending into the wiring frame (12) from a second side opposite to the first side; and a flexible pressing piece (15), arranged between a bottom plate (121) of the wiring frame (12) and the wiring board (14), and configured to abut against the external wire (3) and subjected to a downward pressure of the external wire (3) upon the wiring frame (12) moving upward, thereby exerting an upward biasing force on the external wire and pressing the external wire between the wiring board and the flexible pressing piece, characterized in that a part of the flexible pressing piece (15) is fixedly installed on the bottom plate of the wiring frame, has a U-shaped form, and comprises a first leg (151), a second leg (152) and a bending part (153) connecting the first leg (151) and the second leg (152), and the second leg (152) is closer to the wiring board than the first leg (151), the wiring frame (12) comprises a transverse plate (122), the transverse plate (122) is arranged between the first leg (151) and the second leg (152) and spaced apart from the first leg (151) in the up-and-down direction, and the second leg (152) is sandwiched between the external wire (3) and the transverse plate (122).
  2. The wiring structure according to claim 1, wherein a surface of the second leg (152) adjacent to the external wire (3) is provided with a plurality of protrusions (153) protruding toward the external wire (3), and the plurality of protrusions (153) are configured to abut against the external wire (3).
  3. The wiring structure according to claim 2, wherein upon a connection of the external wire (3) being loose and a gap being generated between the external wire (3) and the second leg (152), the second leg (152) moves upward under an action of an elastic force of the second leg (152), so as to abut against the external wire (3) again, thereby pressing the external wire (3) between the wiring board (14) and the second leg (152).
  4. The wiring structure according to claim 3, wherein the second leg (152) is inclined, and an inclined direction of the second leg (152) is designed such that a part of the second leg (152) adjacent to the second side is closer to the external wire (3) than a part of the second leg (152) adjacent to the first side.
  5. The wiring structure according to any one claims 1-4, wherein the wiring structure (1) further comprises a rigid pressing piece (16) arranged between the top plate of the wiring frame and the wiring board, and the rigid pressing piece (16) is fixed to the bolt (13), upon another external wire (4) extending between the rigid pressing piece (16) and the wiring board from the second side, when the bolt (13) rotates downward, the bolt (13) drives the rigid pressing piece (16) towards the another external wire (4), so that the bolt and the rigid pressing piece abut against the another external wire (4) together.
  6. The wiring structure according to claim 5, wherein a surface of the rigid pressing piece (16) facing the another external wire (4) is provided with a plurality of protrusions (161) protruding towards the another external wire (4), and the plurality of protrusions (161) are configured to abut against the another external wire (4).
  7. A switching device (2), comprising the wiring structure (1) according to any one of claims 1-6.

Description

The present application claims the priority and benefits of the Chinese Patent Applications No. 202420034083.5, which was filed on January 05, 2024. TECHNICAL FIELD Embodiments of the present application relate to a wiring structure and a switching device including the wiring structure. BACKGROUND In the process of using the existing wiring structure, due to the influence of various factors (such as temperature change, vibration and shock, creep of the external wire itself, etc.), the external wire may come loose, which will increase the contact impedance and cause failure. Therefore, it is needed to provide a structure for preventing external wires from loosening. US 3 539977 A discloses a wiring structure in accordance with the preamble of claim 1. SUMMARY In order overcome the problems in the existing art, the present application provides a wiring structure, comprising: a housing; a wiring frame, movably arranged in the housing in an up-and-down direction; a wiring board, extending into the wiring frame from a first side perpendicular to the up-and-down direction, the wiring board being fixed relative to the housing; a bolt, penetrating through a top plate of the wiring frame and configured to drive the wiring frame to move upward through a downward rotary movement; an external wire, extending into the wiring frame from a second side opposite to the first side; and a flexible pressing piece, arranged between a bottom plate of the wiring frame and the wiring board, and configured to abut against the external wire and subjected to a downward pressure of the external wire upon the wiring frame moving upward, thereby exerting an upward biasing force on the external wire and pressing the external wire between the wiring board and the flexible pressing piece. A part of the flexible pressing piece is fixedly installed on the bottom plate of the wiring frame, has a U-shaped form, and comprises a first leg, a second leg and a bending part connecting the first leg and the second leg, and the second leg is closer to the wiring board than the first leg, the wiring frame comprises a transverse plate, the transverse plate is arranged between the first leg and the second leg and spaced apart from the first leg in the up-and-down direction, and the second leg is sandwiched between the external wire and the transverse plate. Advantageously, a surface of the second leg adjacent to the external wire is provided with a plurality of protrusions protruding toward the external wire, and the plurality of protrusions are configured to abut against the external wire. Advantageously, upon a connection of the external wire being loose and a gap being generated between the external wire and the second leg, the second leg moves upward under an action of an elastic force of the second leg, so as to abut against the external wire again, to press the external wire between the wiring board and the second leg. Advantageously, the second leg is inclined, and an inclined direction of the second leg is designed such that a part of the second leg adjacent to the second side is closer to the external wire than a part of the second leg adjacent to the first side. Advantageously, the wiring structure further comprises a rigid pressing piece arranged between the top plate of the wiring frame and the wiring board, and the rigid pressing piece is fixed to the bolt, upon another external wire extending between the rigid pressing piece and the wiring board from the second side, when the bolt rotates downward, the bolt drives the rigid pressing piece towards the another external wire, so that the bolt and the rigid pressing piece abut against the another external wire together. Advantageously, a surface of the rigid pressing piece facing the another external wire is provided with a plurality of protrusions protruding towards the another external wire, and the plurality of protrusions are configured to abut against the another external wire. The present application provides a switching device, comprising the abovementioned wiring structure. BRIEF DESCRIPTION OF DRAWINGS The above and other features and advantages of the exemplary embodiments of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way, wherein: Fig. 1 shows an external view of a wiring structure according to the present application installed to a switching device.Fig. 2 shows a sectional view of a wiring structure according to the present application installed to a switching device, in which a bolt has not yet driven a wiring frame to move.Fig. 3 shows a cross-sectional view of a wiring structure according to the present application installed to a switching device, in which a bolt has driven the wiring frame to move, so that an external wire is compressed.Fig. 4 shows a cross-sectional v