The present invention relates to a connector used for a wire harness routed in an automobile, for example.
Conventionally, a connector attached to a terminal of a wire harness includes a plurality of connection terminals each provided at each of a plurality of wiring ends constituting the wire harness and a connector housing including a plurality of terminal housing chambers each housing and holding each of the plurality of connection terminals. The terminal housing chamber of the connector housing has a tubular shape whose four sides are surrounded by a peripheral wall part, thus needed is an operation of inserting the plurality of connection terminals provided at the wiring end into the terminal housing chamber one by one in manufacturing the connector, and such an operation causes a deterioration in operability.
In contrast, as disclosed in Japanese Patent Application Laid-Open No. 2001-230038 (Patent Document 1), for example, proposed is a structure that a plate-like housing in which a plurality of groove-like terminal housing chambers are arranged side by side is adopted, and performed is an operation of inserting a plurality of connection terminals from above into the plurality of groove-like terminal housing chambers opened in an upper surface of the housing to increase the operability.
However, when such a groove-like terminal housing chamber is adopted, the upper surface of the terminal housing chamber is opened, thus stress tends to be concentrated on the electrical wiring extending from the back end side opening part of the terminal housing chamber in an assembly operation or in use. When an electrical wiring has a low strength, such as an extra-fine wiring, the strength of electrical wiring is hardly secured, and it is difficult to even adopt the groove-like terminal housing chamber in some cases.
The present invention is done on the background of the above circumstance, and a problem to be solved is to provide a connector having a novel structure capable of stably securing a strength of an electrical wiring extending from a terminal housing chamber even when a groove-like terminal housing chamber opened upward is adopted.
A first embodiment of the present invention is a connector including: at least one plate-like housing body; a plurality of groove-like terminal housing chambers each provided at a front end side of the housing body in a length direction, opened in an upper surface of the housing body, and parallelly arranged; a plurality of connection terminals provided at ends of a plurality of electrical wirings and housed and disposed in the terminal housing chambers, respectively; an electrical wiring support part provided at a back end side of the housing body in a length direction to support the plurality of electrical wirings extending from a back end side opening part of the terminal housing chambers; a sheet-like reinforced member which is placed on an upper surface of the electrical wiring support part and the plurality of electrical wirings are fixed to in a parallel state; and a cover part overlapping with the upper surface of the housing body to cover the terminal housing chambers and sandwiching the sheet-like reinforced member between the cover part and the electrical wiring support part.
According to the present invention, provided is a connector capable of stably securing a strength of an electrical wiring extending from a terminal housing chamber even when a groove-like terminal housing chamber opened upward is adopted.
Embodiments of the present invention are listed and described first.
A first embodiment of the present invention is a connector including: at least one plate-like housing body; a plurality of groove-like terminal housing chambers each provided at a front end side of the housing body in a length direction, opened in an upper surface of the housing body, and parallelly arranged; a plurality of connection terminals provided at ends of a plurality of electrical wirings and housed and disposed in the terminal housing chambers, respectively; an electrical wiring support part provided at a back end side of the housing body in a length direction to support the plurality of electrical wirings extending from a back end side opening part of the terminal housing chambers; a sheet-like reinforced member which is placed on an upper surface of the electrical wiring support part and the plurality of electrical wirings are fixed to in a state of parallelly arranged; and a cover part overlapping with the upper surface of the housing body to cover the terminal housing chambers and sandwiching the sheet-like reinforced member between the cover part and the electrical wiring support part.
According to the present embodiment, the terminal housing chamber provided in the housing body has the groove-like shape opened upward, thus in the process of housing the connection terminals provided at the ends of the electrical wirings, the plurality of connection terminals can be collectively fitted into the plurality of terminal housing chambers from above, and operability can be significantly increased compared with a conventional case where the plurality of connection terminals are housed one by one in a tubular terminal housing chamber whose four sides are surrounded by peripheral walls. Furthermore, the concentration of stress on the electrical wiring extending from the terminal housing chamber, which is concerned in adopting the groove-like terminal housing chamber, is also reduced by supporting the plurality of electrical wirings with the electrical wiring support part extending from the back end side opening part of the terminal housing chamber. In addition, the plurality of electrical wirings extending from the back end side opening part of the terminal housing chamber are fixed to the sheet-like reinforced member in the state of parallelly arranged and placed on the upper surface of the electrical wiring support part, and further sandwiched between the cover part overlapping with the upper surface of the housing body and the upper surface of the housing body, thus an external force applied on the plurality of electrical wirings can be reliably avoided or reduced, and the securement of the strength of electrical wiring in such a portion can be reliably achieved. Thus, the groove-like terminal housing chamber can be adopted even when an extra-fine wiring is adopted as the electrical wiring.
A second embodiment of the present invention is the connector according to the first embodiment, wherein a plurality of groove-like electrical wiring housing grooves are opened in the upper surface of the electrical wiring support part and parallelly arranged in the upper surface of the electrical wiring support part. The electrical wiring housing grooves are connected to the back end side opening part of the terminal housing chambers and opened on the back end side of the housing body.
According to the present embodiment, the plurality of electrical wiring housing grooves are connected to the back end side opening part of the terminal housing chambers, opened in the upper surface of the electrical wiring support part, and parallelly arranged, thus the plurality of electrical wirings fixed to the sheet-like reinforced member can be fitted into each of the electrical wiring housing grooves, and housed and held therein. Accordingly, the sheet-like reinforced member can be tightly sandwiched between the electrical wiring support part and the cover part, a misalignment of the sheet-like reinforced member can be reliably prevented, and avoidance of transmission of external force to the electrical wiring and the securement of the strength can be achieved more advantageously.
A third embodiment of the present invention is the connector according to the first or second embodiment, wherein a positioning protrusion is provided to protrude from the upper surface of the electrical wiring support part, a positioning hole into which the positioning protrusion is fitted is provided to pass through the sheet-like reinforced member, and a first positioning concave part into which the positioning protrusion is fitted is formed to be opened in a lower surface of the cover part.
According to the present embodiment, the positioning between the electrical wiring support part of the sheet-like reinforced member and the cover part can be reliably performed by cooperation of the positioning protrusion, the positioning hole of the sheet-like reinforced member into which the positioning protrusion is fitted, and the first positioning concave part of the cover part. Accordingly, the sheet-like reinforced member is stably held in a predetermined position between the electrical wiring support part and the cover part, and the strength of the electrical wiring can be secured more reliably. Particularly, the positioning hole of the sheet-like reinforced member can be fitted and locked to the positioning protrusion provided to protrude from the upper surface of the electrical wiring support part, thus the sheet-like reinforced member can be stably held by the electrical wiring support part of the housing body before the cover part is attached, and the operability can be increased.
A fourth embodiment of the present invention is the connector according to any one of the first to third embodiments, wherein the plurality of housing bodies are vertically stacked in layers, a lower surface of the housing body on an upper side overlapping with the housing body on a lower side constitutes a middle cover part overlapping with the upper surface of the housing body on the lower side, covering each of the terminal housing chambers, and sandwiching the sheet-like reinforced member between the middle cover part and the electrical wiring support part, a second positioning concave part into which a positioning protrusion, which is provided to protrude from the electrical wiring support part in the housing body on a lower side, is fitted is provided in the middle cover part, and the housing bodies vertically stacked are positioned and fixed by fitting the positioning protrusion into the second positioning concave part.
According to the present embodiment, the plurality of housing bodies are vertically stacked in layers, thus a laminated connector can be easily provided. Particularly, the lower surface of the housing body constitutes the middle cover part thereby being able to cover the terminal housing chamber and sandwich the sheet-like reinforced member between the middle cover part and the electrical wiring support part, thus the number of components can be reduced and the configuration can be simplified.
A fifth embodiment of the present invention is the connector according to any one of the first to fourth embodiments, wherein the cover part and the housing body are mutually locked and fitted by a locking mechanism provided on a side wall.
According to the present embodiment, the cover part and the housing body are mutually locked and fitted by the locking mechanism provided on the side wall, thus an overlapping state of the cover part and the housing body can be stably held, and the sheet-like reinforced member can be sandwiched more stably between the electrical wiring support part and the cover part.
Embodiments of the present invention are described with reference to the drawings hereinafter. In all of the drawings, the similar reference numerals will be assigned to the similar constituent elements, and the description is appropriately omitted.
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The electrical wiring 12 has a configuration that the core wiring 74 made up of a bundle of metal wirings of copper, aluminum, or the other conductive material, for example, is covered by the insulating coating 72 such as ethylene based resin or styrene based resin having an electrical insulation property. In the meanwhile, the connection terminal 70 is integrally formed using various metal materials with electrical conductivity on which a press working or a die-cut can be performed such as brass, copper, copper alloy, aluminum, aluminum alloy, for example. A glass fiber non-woven cloth or an aramid fiber non-woven cloth impregnated with epoxy resin or phenol resin, for example, is used as the sheet-like reinforced member 90, and the sheet-like reinforced member 90 is pressed to the electrical wiring 12 by heat press, for example, thereby being able to be fixed thereto.
The connector 10 having such a configuration is assembled in a manner described hereinafter. Firstly prepared is a sheet-like reinforced member-attached electrical wiring bundle 94 in which the plurality of electrical wirings 12 each having the end to which the connection terminal 70 is connected are parallelly arranged are fixed to the sheet-like reinforced member 90. Then, each of the plurality of connection terminals 70 provided at the end of each of the plurality of electrical wirings 12 in the sheet-like reinforced member-attached electrical wiring bundle 94 is housed and disposed in each of the terminal housing chambers 26 provided in the housing body 16, and the positioning hole 92 provided to pass through the sheet-like reinforced member 90 is fitted into the positioning protrusion 56 in the housing body 16. As a result, the plurality of electrical wirings 12 extending from the back end side opening part 50 of the terminal housing chamber 26 are housed and held in the electrical wiring housing groove 54 provided in the electrical wiring support part 22, and a front end portion side (right end side in
Finally, the cover part 18 overlaps with the upper surface 24 of the housing body 16 from above, and the positioning protrusion 56 provided at the housing body 16 is pressed into the through hole 68 of the cover part 18. As a result, the cover part 18 covers the terminal housing chamber 26 of the housing body 16, and the front end portion of the sheet-like reinforced member 90 of the sheet-like reinforced member-attached electrical wiring bundle 94 is sandwiched between the electrical wiring support part 22 of the housing body 16 and the sandwiching part 66 of the cover part 18. Herein, a first positioning concave part into which the positioning protrusion 56 of the housing body 16 is fitted is formed to be opened in the lower surface of the cover part 18 by the through hole 68 of the cover part 18. Furthermore, the locking part 46 constituting the locking mechanism provided on the side wall 42 of the housing body 16 is locked to the through hole 61 of the locking frame body 62 constituting the locking mechanism provided on the side wall 60 of the cover part 18. That is to say, the cover part 18 and the housing body 16 are mutually locked and fitted by the locking mechanisms 62 and 46 provided on their side walls 60 and 42. In addition, the fitting protrusion 44 provided on the side wall 42 of the housing body 16 is fitted to the fitting concave part 64 of the fitting frame body 62 provided on the side wall 60 of the cover part 18. As described above, an overlapping state of the cover part 18 and the housing body 16 can be stably held, and the sheet-like reinforced member 90 can be sandwiched between the electrical wiring support part 22 of the housing body 16 and the sandwiching part 66 of the cover part 18 more stably.
According to the connector 10 having such a configuration, the terminal housing chamber 26 has the groove-like shape opened in the upper surface 24 of the housing body 16, thus the connection terminals 70 provided at the ends of the plurality of electrical wirings 12 of the sheet-like reinforced member-attached electrical wiring bundle 94 can be collectively fitted into the plurality of terminal housing chambers 26 from above. Thus, operability can be significantly increased compared with a conventional case where the plurality of connection terminals are housed one by one in a tubular terminal housing chamber whose four sides are surrounded by peripheral walls. Furthermore, the concentration of stress on the electrical wiring 12 extending from the terminal housing chamber 26 of the terminal housing part 20 of the housing body 16 is also reduced by housing and holding the electrical wiring 12 with the groove-like electrical wiring housing groove 54 connected to the back end side opening part 50 of the terminal housing chamber 26. In addition, the plurality of electrical wirings 12 extending from the connection terminal 70 are fixed to the sheet-like reinforced member 90 in the state of parallelly arranged, and the from end portion of the sheet-like reinforced member 90 is sandwiched between the sandwiching part 66 of the cover part 18 and the electrical wiring support part 22 of the housing body 16. Accordingly, the external force applied on the plurality of electrical wirings 12 can be reliably avoided or reduced, and the securement of the strength of electrical wiring 12 in such a portion can be reliably achieved. Thus, the groove-like terminal housing chamber 26 can be adopted even when an extra-fine wiring is adopted as the electrical wiring 12.
The positioning between the housing body 16, the sheet-like reinforced member 90, and the cover part 18 can be reliably performed by cooperation of the positioning protrusion 56 of the housing body 16, the positioning hole 92 of the sheet-like reinforced member 90, and the through hole 68 of the cover part 18. Accordingly, the sheet-like reinforced member 90 is stably held in a predetermined position between the housing body 16 and the cover part 18, and the strength of the electrical wiring 12 can be secured more reliably. Particularly, the positioning hole 92 of the sheet-like reinforced member 90 can be fitted and locked to the positioning protrusion 56 provided to protrude from the upper surface 48 of the electrical wiring support part 22, thus the sheet-like reinforced member 90 can be stably held by the electrical wiring support part 22 of the housing body 16 before the cover part 18 is attached, and the operability can be increased.
Details of the embodiments of the present invention are described above, however, the present invention is not limited to these specific descriptions. For example, in the above first embodiment, the housing body 16 is formed of a single layer, however, the housing bodies 98 and 16 may be vertically stacked in layers as is the case in the connector 96 as the second embodiment of the present invention illustrated in
A shape of the housing body 98 disposed between the cover part 18 and the housing body 16 in a lowermost layer is the same as the housing body 16 in the lowermost layer except that the housing body 98 includes the locking frame body 62 constituting the locking mechanism. Thus, the housing bodies 16 and 98 can be manufactured with a reduced cost for mold. When the locking mechanism is not provided, only the housing body 16 can be used, thus the configuration and a parts management can be further simplified. Furthermore, in the second embodiment of the present invention illustrated in
In the embodiment described above, the positioning protrusion 56 is fitted to the through hole 68 constituting the first positioning concave part and the second positioning concave part 100 by pressing, but may be fitted by insertion. In such a case, the configuration of sandwiching the sheet-like reinforced member 90 may be made up of a locking mechanism such as the locking mechanisms 46 and 62, for example. Furthermore, the first positioning concave part may be the through hole 68 as the first embodiment described above or a recessed portion such as the second positioning concave part 100. In addition, a combination of the convex part and the concave part in the positioning protrusion 56, the through hole 68 constituting the first positioning concave part, and the second positioning concave part 100 may be a combination of the concave part and the convex part in reverse. That is to say, it is also applicable that the positioning protrusion 56 is provided at a side of the housing body 98 which is the cover part 18 and the middle cover part, and the concave part is formed in the upper surface 24 of the housing bodies 16 and 98.
In addition, the sheet-like reinforced member 90 is not limited to that exemplified above, however, any member can be optionally adopted as long as it has a sheet-like shape and can fix and hold the electrical wiring 12, such as a resin sheet material provided with an adhesion layer to fix the electrical wiring 12 or a fabric sheet material to which the electrical wiring 12 is sewn.
10, 96: connector, 12: electrical wiring, 16: housing body, 18: cover part, 22: electrical wiring support part, 24: upper surface, 26: terminal housing chamber, 46: locking part (locking mechanism), 48: upper surface, 50: back end side opening part, 52: back end, 54: electrical wiring housing groove, 56: positioning protrusion, 62: locking frame body (locking mechanism), 68: through hole (first positioning concave part), 70: connection terminal, 90: sheet-like reinforced member, 92: positioning hole, 98: housing body (middle cover part), 100: second positioning concave part
Number | Date | Country | Kind |
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2018-007953 | Jan 2018 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2018/039127 | 10/22/2018 | WO | 00 |