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JP-7856943-B2 - connector

JP7856943B2JP 7856943 B2JP7856943 B2JP 7856943B2JP-7856943-B2

Inventors

  • 兼松 佑多
  • ビョン ソンヒョン
  • 廣脇 宣和

Assignees

  • 株式会社オートネットワーク技術研究所
  • 住友電装株式会社
  • 住友電気工業株式会社

Dates

Publication Date
20260512
Application Date
20220914

Claims (10)

  1. Multiple terminals housed in the connector housing, Multiple wires are connected to each of the aforementioned terminals and are routed out in parallel from the outside of the connector housing with gaps between them, The connector housing is equipped with a back retainer made of synthetic resin, which has multiple wire insertion tubes through which multiple wires pulled out to the outside of the connector housing are inserted and held in a crimped state, and which is assembled to the connector housing side. The aforementioned back retainer is, Each of the aforementioned electric wires has a pair of split retainers that clamp and hold the electric wire from both sides perpendicular to its axis and fix them together. Each of the pair of divided retainers has a plurality of grooves that are in close contact with the outer surface of the plurality of electric wires, and a divided projection that is located between the plurality of grooves in the parallel direction of the plurality of electric wires and protrudes in the direction of the lead-out of the plurality of electric wires. The pair of divided retainers are fixed to each other so that the multiple wire insertion tubes are partitioned and arranged in parallel by the multiple grooves, and the divided protrusions are combined to form a wire retaining projection that is positioned between the multiple wires that protrude from the multiple wire insertion tubes and extend in the pulling direction. The wire retaining projection has a pair of wire contact surfaces that contact the wires arranged on both sides in the parallel direction, and a pair of first band mounting portions provided on the end faces on both sides in a first direction perpendicular to the opposing direction of the pair of wire contact surfaces. A connector in which a plurality of wires protruding from a plurality of wire insertion tubes and extending in the pulling direction are bound and fixed to each other by a first binding band stretched between a pair of first band mounting portions, with each wire in close contact with a pair of wire contact surfaces of the wire retaining projections of the back retainer, and the first binding band contacts the pair of first band mounting portions from both sides in the first direction, pressing the respective divided projections of the pair of divided retainers constituting the wire retaining projections against each other from both sides in the first direction.
  2. The connector according to claim 1, wherein the pair of wire contact surfaces of the wire retaining projection are formed by curved surfaces that are convex inward in their opposing directions.
  3. The connector housing is further provided with a metal shield shell that is fixed to the connector housing and covers the connector housing, and has a cylindrical wire outlet from which a plurality of the wires drawn out to the outside of the connector housing are drawn out, wherein the back retainer is fitted into the wire outlet of the shield shell. The wire outlet of the shield shell has a plurality of engaging portions provided at mutual distances in the circumferential direction of the wire outlet, The back retainer has a first engaging portion which engages with the engaged portion and has crushing ribs provided on both sides in the first direction, and a second engaging portion which engages with the engaged portion and has crushing ribs provided on both sides in the parallel direction, The connector according to claim 1 or 2, wherein, in the state in which the back retainer is fitted to the wire outlet, the first engaging portion is pressed against the engaged portion on both sides in the first direction via the crushing ribs, and the second engaging portion is pressed against the engaged portion on both sides in the parallel direction via the crushing ribs.
  4. Each of the divided retainers has a second band mounting portion provided on the end side opposite to the dividing projection in the pulling direction, and the back retainer, which is formed by assembling the divided retainers together, has a pair of the second band mounting portions arranged on both sides in the first direction. The connector according to claim 3, wherein the pair of divided retainers are pressed against each other from both sides in the first direction by a second cable tie stretched between the pair of second band mounting portions, and the back retainer is secured to the wire outlet of the shield shell.
  5. The plurality of engagement portions of the wire outlet include a plurality of first engagement portions arranged on both sides in the parallel direction and a plurality of second engagement portions arranged on both sides in the first direction. The back retainer includes a plurality of first engaging portions arranged on both sides in the parallel direction and a plurality of second engaging portions arranged on both sides in the first direction. The connector according to claim 3, wherein, in the state in which the back retainer is fitted to the wire outlet, the first engaging portion is pressed against the first engaged portion on both sides in the parallel direction via the crimping ribs on both sides in the first direction, and the second engaging portion is pressed against the second engaged portion on both sides in the parallel direction via the crimping ribs on both sides in the parallel direction.
  6. The diameter of the inner circumferential surface of each of the wire insertion tubes of the back retainer is larger than the diameter of the outer circumferential surface of each of the wires inserted inside the wire insertion tubes. On the inner circumferential surface of each of the wire insertion tube portions, a plurality of wire pressing protrusions are provided, spaced apart from each other, protruding radially inward from the outer circumferential surface of each of the wires. The connector according to claim 1 or claim 2, wherein each of the wire pressing protrusions presses the insulating coating constituting the outer surface of each of the wires radially inward, so that the wires are inserted into and held in a pressure-contact state in the wire insertion cylinder.
  7. The back retainer has an elastic locking piece that cantilever-like protrudes toward the wire outlet of the shield shell, and the elastic locking piece has a fitting hole at its protruding end. The shield shell has a locking projection that protrudes from the outer surface of the wire outlet, The connector according to claim 3, wherein the locking projection of the shield shell is fitted into the fitting hole of the elastic locking piece of the back retainer, thereby fitting the back retainer into the wire outlet of the shield shell.
  8. The wire outlet of the shield shell has a concave lock piece housing portion that opens to the outer surface of the wire outlet, and the lock projection is provided on the bottom surface of the lock piece housing portion. The connector according to claim 7, wherein, in the state in which the back retainer is fitted to the shield shell, the elastic locking piece of the back retainer is housed in the locking piece housing portion.
  9. The wire outlet of the shield shell is provided with a plurality of notched engagement portions that penetrate in the thickness direction of the plate and open to the end face on the side facing the wire exit, at the cylindrical end of the wire located on the exit direction side. At least one of the engaged portions is provided opening to the bottom surface of the lock piece housing portion, The connector according to claim 8, wherein the base end side of the elastic locking piece of the back retainer is provided with a protruding second engaging portion that protrudes from the elastic locking piece toward the electric wire side and is press-fitted into the at least one of the engaged portions.
  10. The back retainer includes a mounting cylinder portion that is fitted onto the inner circumference of the cylindrical end of the wire outlet, and a protruding first engaging portion that is provided on the outer circumference of the mounting cylinder portion. The connector according to claim 9, wherein, in the state in which the back retainer is fitted to the shield shell, the first engaging portion is housed in the engaged portion without protruding outwards from the outer circumference of the wire outlet.

Description

This disclosure relates to connectors. Conventionally, connectors have been used to electrically connect in-vehicle equipment. Such connectors include a connector housing, terminals housed within the housing, and wires connected to the terminals, with the wires extending outwards from the wire outlet of the connector housing. External forces applied to these wires can transmit to the terminals, causing problems such as contact friction and wear. Therefore, to suppress the transmission of external forces from the wires to the terminals, for example, Patent Document 1 describes a resin back retainer that holds the wires in the connector housing while suppressing wire vibration. Japanese Patent Publication No. 2022-78600 Figure 1 is a perspective view showing a connector according to Embodiment 1.Figure 2 is a plan view showing an enlarged view of the main parts of the connector shown in Figure 1.Figure 3 is a cross-sectional view taken along the line III-III in Figure 2.Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2.Figure 5 is a cross-sectional view taken along line V-V in Figure 2.Figure 6 is an exploded perspective view showing the connector shown in Figure 1 in a partially disassembled state.Figure 7 is a cross-sectional view showing the connector shown in Figure 1 with the back retainer removed, and corresponds to Figure 3.Figure 8 is a perspective view showing the split retainer that makes up the connector shown in Figure 1.Figure 9 is a perspective view of the split retainer shown in Figure 8, viewed from the bottom side.Figure 10 is a plan view of the split retainer shown in Figure 8.Figure 11 is a front view of the split retainer shown in Figure 8.Figure 12 is a perspective view of the back retainer, which constitutes the connector shown in Figure 1, from the rear side. <Description of Embodiments in this Disclosure> First, embodiments of this disclosure will be listed and described. The connector disclosed herein is (1) A back retainer made of synthetic resin, assembled to the connector housing side, having a plurality of terminals housed in a connector housing, a plurality of electric wires connected to each of the plurality of terminals and drawn out in parallel with gaps between them to the outside of the connector housing, and a plurality of wire insertion tubes through which the plurality of electric wires drawn out to the outside of the connector housing are inserted and held in a press-fit state, wherein the back retainer has a pair of divided retainers that clamp and hold the electric wires from both sides perpendicular to the axis of each electric wire and fix them to each other, and the pair of divided retainers each have a plurality of grooves that are in close contact with the outer surface of the plurality of electric wires, and a divided projection that is located between the plurality of grooves in the parallel direction of the plurality of electric wires and protrudes in the direction of the drawing out of the plurality of electric wires, and the pair of divided retainers are fixed to each other so that the plurality of wire insertion tubes are partitioned by the plurality of grooves and arranged in parallel In addition, the divided protrusions are combined to form a wire retaining protrusion that is positioned between the multiple wires that protrude from the multiple wire insertion cylinders and extend in the withdrawal direction, and the wire retaining protrusion has a pair of wire contact surfaces that contact the wires arranged on both sides in the parallel direction, and a pair of first band mounting portions provided on the end faces on both sides in a first direction perpendicular to the opposing direction of the pair of wire contact surfaces, and the multiple wires that protrude from the multiple wire insertion cylinders and extend in the withdrawal direction are bound and fixed to each other in close contact with the pair of wire contact surfaces of the wire retaining protrusion of the back retainer by a first binding band stretched between the pair of first band mounting portions, and the first binding band contacts the pair of first band mounting portions from both sides in the first direction, pressing the respective divided protrusions of the pair of divided retainers that constitute the wire retaining protrusion together from both sides in the first direction. According to the connector of this disclosure, the back retainer made of synthetic resin is composed of a pair of split retainers that clamp and hold the electric wire from both sides perpendicular to the axis of the electric wire and fix them together, and each pair of split retainers has a plurality of grooves that are in close contact with the outer surface of the electric wire, and a split projection that is located between the plurality of grooves in the parallel direction of the electric wires and protrudes in the direction of the lead-out of the plurality of electric wires. When the