JP2018163773A - Tolerance absorption structure for conductor connection part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tolerance absorption structure for a conductor connection part capable of improving assemblability of a wiring material having high rigidity.SOLUTION: A tolerance absorption structure for a conductor connection part 12 comprises: a wiring material connection part 89 for a first high-rigidity wiring material 96; a wiring material connection part 90 which is formed in an end of a conductor of a second high-rigidity wiring material 98 and in parallel with a connection surface of the wiring material connection part 89; a fastening bolt 52 for penetrating and fastening the wiring material connection part 89 and the wiring material connection part 90 that are overlapped in parallel, in a direction vertical to the connection surface; and a slot 22 which is provided in the wiring material connection part 89, extends in a connection direction of the second high-rigidity wiring material 98, and causes the fastening bolt 52 to penetrate the second high-rigidity wiring material 98 at a different position in a direction of the extension.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tolerance absorbing structure for a conductor connecting portion.

Wire harnesses that are routed in vehicles are configured by concentrating many types of electric wires, and the most widely used electric wires are circular cross-sections in which a core wire made of conductive metal is covered with an insulating coating made of insulating resin. It consists of a covered electric wire. The sizes of these covered electric wires are classified into small-diameter thin wires, medium-diameter medium wires, and large-diameter thick wires, and thick wires usually have a core wire cross-sectional area of 8 mm ² (so-called 8 sq) or more. It refers to an electric wire, and the core wire cross-sectional area of a very thick electric wire has reached about 100 mm ² (see Patent Document 1). Therefore, the thick wire has higher rigidity than the thin wire and the medium wire.

  Electric motors mounted on hybrid vehicles and electric vehicles are supplied with a large current from an inverter or the like so that high driving torque can be exhibited. Normally, the above-mentioned thick wires are used for electric wires (routing materials) connecting such an inverter and an electric motor in order to reduce transmission loss.

JP2015-90812A

  However, high-rigidity wiring materials, such as thick wires, flat conductors, and round conductors, have a small amount of bending during the wiring work, so depending on the tolerance of the wiring material and the tolerance of the connection partner conductor, There is a possibility that the attaching workability is lowered or the fastening is not possible. That is, there is a possibility that the wiring member, the fastening hole, and the connection partner conductor cannot be fastened unless they have high accuracy. For this reason, in wiring materials that use long, thick wires from the vehicle-side battery on the vehicle front side to the inverter on the rear side, etc., there is a higher possibility that the conductor connection part cannot be fastened if the tolerance is large. Is required, leading to an increase in manufacturing cost.

  This invention is made | formed in view of the said situation, The objective is to provide the tolerance absorption structure of the conductor connection part which can improve the assembly | attachment property of the wiring material which has high rigidity.

The above object of the present invention is achieved by the following configuration.
(1) A connection partner conductor, a conductor piece formed at an end of a conductor of a highly rigid routing material and parallel to the connection surface of the connection partner conductor, and the connection partner conductor and the conductor stacked in parallel A fastening member that penetrates the piece in a direction perpendicular to the connection surface and fastens and electrically connects the connection partner conductor and the conductor piece, and at least one of the connection partner conductor and the conductor piece A tolerance absorbing portion provided and extending or interspersed along the connecting direction of the highly rigid routing material and penetrating the fastening member at different positions in the extending direction of the highly rigid routing material; A tolerance-absorbing structure for a conductor connecting portion, comprising:

  According to the tolerance absorbing structure of the conductor connecting portion configured as described in (1) above, the connection partner conductor and the conductor piece portion of the wiring member having high rigidity are electrically connected by the tolerance absorbing portion penetrating the fastening member. Is done. At this time, the connection partner conductor and the conductor piece portion are displaced in the range of tolerance with respect to the fastening member penetrating both, but the fastening member is inserted into the tolerance absorbing portion, so that the tolerance absorbing portion is rigid. Fastening members can penetrate at different positions in the extending direction of the high routing material. Therefore, even in a highly rigid wiring material such as a thick electric wire, a flat conductor, and a round conductor, a positional deviation that occurs within a tolerance range can be absorbed.

(2) The tolerance absorbing portion is a length formed such that the minor axis is substantially equal to the outer diameter of the fastening member, and the major axis extends along the connecting direction of the highly rigid routing material and is larger than the minor axis. The tolerance absorbing structure for a conductor connecting portion according to the above (1), which is a hole.

  According to the tolerance absorbing structure of the conductor connecting portion having the configuration (2), the fastening member can be moved in the extending direction of the long hole. The positional deviation within the tolerance range occurring in the connection partner conductor or the highly rigid wiring material is absorbed by the movement of the fastening member. Thereby, the state which becomes impossible to insert a fastening member into a connection other party conductor and a conductor piece part is suppressed.

(3) The tolerance of the conductor connecting portion according to (1), wherein the tolerance absorbing portion is a plurality of fastening insertion holes scattered along a connecting direction of the highly rigid wiring material. Absorbing structure.

  According to the tolerance absorbing structure of the conductor connection portion configured as described in (3) above, the fastening member can be penetrated through both the connection partner conductor and the conductor piece portion among the plurality of fastening insertion holes. The fastening insertion hole is selected and inserted. The positional deviation within the tolerance range generated in the connection partner conductor or the highly rigid wiring material is absorbed by the selection of the optimum fastening insertion hole. Thereby, the state which becomes impossible to insert a fastening member into a connection other party conductor and a conductor piece part is suppressed.

(4) A plurality of flat plate portions made of a conductive material are laminated by electrically insulating each flat plate portion with an insulating layer, and the connection partner conductor is separated from the outer peripheral edge of each flat plate portion. The flat plate portion and the connection partner conductor are accommodated in a connection box made of an insulating resin having a connection opening into which the conductor piece portion is inserted, and the fastening member extends from the elongated hole. The tolerance absorbing structure for a conductor connecting portion according to (2), wherein the tolerance absorbing structure is provided so as to be movable along a guide groove formed in the connection box in a direction.

According to the tolerance absorbing structure of the conductor connection portion having the configuration (4), the connection partner conductor having the elongated hole is disposed in the connection opening of the connection box. The guide groove formed in the connection opening guides the fastening member penetrating the elongated hole so as to be movable in the longitudinal direction of the elongated hole. The positional deviation within the tolerance range occurring in the connection partner conductor or the highly rigid wiring material is absorbed by the movement of the fastening member. Thereby, the state which becomes impossible to insert a fastening member into a connection other party conductor and a conductor piece part is suppressed.
Further, the connection partner conductor is provided in each of the laminated flat plate portions. Only the sum of the total thickness of the flat plate portions equal to the number of conductors and the total thickness of the insulating layers provided between the plurality of connection partner conductors is the thickness in the stacking direction, and can be formed thin. As a result, it is possible to absorb a positional shift that occurs within a tolerance range even in a thick wire, a flat conductor, a round conductor, or the like while saving space in the wiring space.

(5) The tolerance absorbing structure for a conductor connecting portion according to (4) above, wherein a biasing member that biases the fastening member toward one end of the guide groove is inserted into the guide groove. .

  According to the tolerance absorbing structure for the conductor connecting portion having the configuration (5), the fastening member can be moved to an optimum position against the biasing force of the biasing member. The moved fastening member fastens the connection partner conductor and the conductor piece at the position where the biasing member is stored. When the conductor piece portion is not connected to the connection partner conductor, the fastening member is held in a state of being biased toward one end side of the guide groove by the urging force of the urging member. Thereby, for example, rattling of the fastening member due to vibration during traveling of the vehicle is suppressed even in the connection partner conductor in which the conductor piece portion is not connected.

(6) A plurality of flat plate portions made of a conductive material are laminated by electrically insulating each flat plate portion with an insulating layer, and the connection partner conductor is separated from the outer peripheral edge of each flat plate portion. The conductor connection according to (3), wherein the flat plate portion is accommodated in a connection box made of an insulating resin, and the connection partner conductor protrudes from a connection opening of the connection box. Tolerance absorption structure of the part.

According to the tolerance absorbing structure of the conductor connection portion having the configuration (6), the connection partner conductor protrudes from the connection opening of the connection box. The protruding connection partner conductor is dotted with a plurality of fastening insertion holes along the connection direction of the highly rigid wiring material. The fastening member is inserted by selecting an optimum fastening insertion hole that can penetrate both the connection partner conductor and the conductor piece portion among the plurality of fastening insertion holes scattered. Thereby, the state which becomes impossible to insert a fastening member into a connection other party conductor and a conductor piece part is suppressed.
Further, the connection partner conductor is provided in each of the laminated flat plate portions. Only the sum of the total thickness of the flat plate portions equal to the number of conductors and the total thickness of the insulating layers provided between the plurality of connection partner conductors is the thickness in the stacking direction, and can be formed thin. As a result, it is possible to absorb a positional shift that occurs within a tolerance range even in a thick wire, a flat conductor, a round conductor, or the like while saving space in the wiring space.

  According to the tolerance absorbing structure of the conductor connecting portion according to the present invention, it is possible to improve the assembling property of the wiring material having high rigidity.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

It is a disassembled perspective view showing the tolerance absorption structure of the conductor connection part which concerns on the 1st Embodiment of this invention. It is a perspective view showing the example of a wiring with the vehicle using a highly rigid wiring material. (A), (b) is the perspective view showing the 1st highly rigid routing material and the 2nd highly rigid routing material shown in FIG. It is II sectional view taken on the line of the 2nd highly rigid routing material shown in FIG. It is a front view of the edge part of the 2nd highly rigid routing material shown in FIG. It is a perspective view of the round conductor which is a highly rigid wiring material. It is an external appearance perspective view of a connection box provided with the tolerance absorption structure which concerns on the 2nd Embodiment of this invention. FIG. 8 is an overall perspective view of a laminated conductive member housed in the connection box of FIG. 7. It is a disassembled perspective view of the connection box shown in FIG. It is a disassembled perspective view of a lamination | stacking electroconductive member and a 2nd highly rigid wiring material. It is a principal part disassembled perspective view showing the connection opening part of the connection box in which the guide groove was formed. It is sectional drawing showing the tolerance absorption part which concerns on the modification of 2nd Embodiment. It is a schematic diagram showing the example of the wiring of the electric wire in the vehicle using a junction box. It is a schematic diagram showing the example of a wiring in the vehicle using the connection box shown in FIG. 7, and a highly rigid wiring material. It is an external appearance perspective view of a connection box provided with the tolerance absorption structure which concerns on 3rd Embodiment. It is an external appearance perspective view of the connection box shown in FIG. 15 which removed the cover case. It is a whole perspective view of the lamination | stacking electroconductive member accommodated in the connection box of FIG. It is a disassembled perspective view of the connection box shown in FIG. FIG. 5 is an exploded perspective view of a laminated conductive member having a plurality of fastening insertion holes and a highly rigid wiring member. It is an effect | action figure of the tolerance absorption structure shown in FIG.

Embodiments according to the present invention will be described below with reference to the drawings.
The tolerance absorbing structure of the conductor connecting portion according to the present embodiment is applied to connection of a highly rigid wiring material for in-vehicle use. The high-rigidity wiring material includes a thick wire and a so-called multilayered wire. The thick wire refers to an electric wire having a core wire cross-sectional area of 8 mm ² (so-called 8 sq) or more. A multilayer electric wire refers to a wiring material in which a plurality of flat conductors are laminated via an insulating layer to form a structure, or a plurality of insulation-coated round conductors are bundled to form a structure. Hereinafter, in the present specification, these thick wires and multilayered wires are also referred to as “high-rigidity wiring materials”.

(First embodiment)
FIG. 1 is an exploded perspective view showing a tolerance absorbing structure of the conductor connecting portion 12 according to the first embodiment of the present invention.
The wiring material 85 mentioned later is used for the highly rigid wiring material which concerns on this 1st Embodiment. As for the upstream side wiring material 99 which consists of the wiring material 85, the 1st high rigidity wiring material 96 and the 2nd high rigidity wiring material 98 are electrically connected by the conductor connection part 12. FIG. The respective ends of the first high-rigidity routing material 96 and the second high-rigidity routing material 98 connected by the conductor connecting portion 12 are fixed to the floor panel or the like by clamps 123. The conductor connecting portion 12 has a tolerance absorbing structure described later.

  As shown in FIG. 2, the upstream wiring member 99 and the downstream wiring member 97 are, for example, used as a power cable, a front cross member 91 on the front (Fr) side of the vehicle and a rear cross on the rear (Rr) side. The member 93 is routed in the vehicle front-rear direction along the floor panel 95 across the member 93. Further, the branch routing material 101 made of the routing material 85 is routed in the vehicle left-right direction along the floor panel 95 across the tunnel portion 92 of the vehicle, and the upstream side routing material 99 and The downstream wiring member 97 is electrically connected.

  The upstream wiring member 99, the downstream wiring member 97, and the branch wiring that are routed along the floor panel 95 and interconnected across the front (Fr) side and the rear (Rr) side of the vehicle. With the material 101, power can be supplied from the in-vehicle battery to devices in various parts of the vehicle.

  The upstream side routing material 99 and the downstream side routing material 97 are made in a structure according to the installation location as described above. That is, the upstream side wiring material 99 and the downstream side wiring material 97 become a highly rigid structure by the wiring material 85 that is a multilayer electric wire. For this reason, for example, when the length is longer than half in the vehicle longitudinal direction like the upstream side routing material 99, the first high-rigidity routing shown in FIG. The material 96 is preferably manufactured by being divided into a second high-rigidity wiring material 98 and the like shown in FIG.

  The routing member 85 of the present embodiment is configured by stacking flat conductors 87A to 87D, which are conductors covered with the insulating layer 55, from the lower layer side, thereby forming a multilayer electric wire that can handle multiple circuits. Yes. 4 and 5 exemplify the case of the routing member 85 including four layers of flat conductors 87A to 87D, the number of layers (number of layers) is not limited to this.

The wiring material connecting portions 89 of the respective flat conductors 87A to 87D can be formed with a width obtained by dividing the entire width of the wiring material 85 by the number of layers.
The four circuits in the illustrated example can constitute the routing member 85 by laminating flat conductors 87A to 87D in the order of 48V minus, 48V plus, 12V plus, and 12V minus from the lower layer. In this case, it is preferable that adjacent layers have the same polarity. In the routing member 85 of the illustrated example, “plus of 48V” and “plus of 12V” are adjacent to each other in the second-layer flat conductor 87B and the third-layer flat conductor 87C. Thus, in the routing member 85 in which multiple circuits are stacked, the noise resistance can be improved by arranging the same poles adjacent to each other.

  As shown in FIG. 1, the tolerance absorbing structure of the conductor connecting portion 12 according to the first embodiment includes a routing member connecting portion 89 of the first high-rigidity routing material 96 serving as a connection partner conductor, and a conductor piece. The wiring material connecting portion 90 of the second high-rigidity wiring material 98 serving as a portion, the fastening bolt 52 serving as a fastening member, and the wiring material connecting portion 90 of the second high-rigidity wiring material 98 serving as a tolerance absorbing portion And a long hole 22 to be drilled.

The routing material connection portion 90 that is the conductor piece portion is parallel to the connection surface of the routing material connection portion 89 that is the connection partner conductor.
The fastening bolt 52, which is a fastening member, passes through the wiring member connecting portion 89 and the wiring member connecting portion 90, which are stacked in parallel, in a direction perpendicular to the connection surface, and the fixing nut 51 is screwed together. The wiring material connection part 89 and the wiring material connection part 90 are fastened and electrically connected.

  The oblong hole 22 serving as the tolerance absorbing portion of the first embodiment is provided in at least one of the routing material connection portion 89 and the routing material connection portion 90 (in the example shown in FIG. 1, the routing material connection portion 90. Provided). The long hole 22 extends along the connection direction of the second high-rigidity routing material 98 and allows the fastening bolt 52 to pass through at different positions in the extension direction of the routing material connection portion 90. A normal bolt fixing hole 43 is formed in the routing member connecting portion 89 which is a connection partner conductor. The bolt fixing hole 43 may be the long hole 22.

  The long hole 22, which is a tolerance absorbing portion, has a short diameter substantially equal to the screw outer diameter of the fastening bolt 52, and the long diameter extends along the connecting direction of the routing member connecting portion 90 and is formed larger than the short diameter.

  In addition, the tolerance absorption structure which concerns on this embodiment does not necessarily need to be connected with the routing material 85 which consists of flat type conductors 87A-87D. For example, as shown in FIG. 6, it is possible to connect a wiring member 119 in which a plurality of insulating round conductors 117 are bundled by a clamp 123 or the like to form a structure. Each round conductor 117 is connected to a routing material connecting portion 121 formed in an LA terminal shape. In this case, a long hole 22 that is a tolerance absorbing portion is formed in the routing member connecting portion 121.

Next, the operation of the tolerance absorbing structure according to the first embodiment described above will be described.
In the tolerance absorbing structure of the conductor connection portion according to the first embodiment, the routing material connection portion 89 of the first high-rigidity routing material 96 that is the connection partner conductor and the second high-rigidity routing that becomes the conductor piece portion. The wiring member connecting portion 90 of the material 98 is electrically connected through a long hole 22 which is a tolerance absorbing portion through which the fastening bolt 52 is passed.
At this time, the cabling material connecting portion 89 and the cabling material connecting portion 90 are misaligned in the range of tolerance with respect to the fastening bolt 52 penetrating both, but the fastening bolt 52 is a tolerance absorbing portion. Since the holes 22 are inserted, the fastening bolts 52 can pass through the elongated holes 22 at different positions in the extending direction of the routing member connecting portions 90. Therefore, even in the high-rigidity routing material including the flat conductors 87A to 87D, it is possible to absorb the positional deviation that occurs within the range of tolerance.

  That is, when the position difference of the fastening member such as the fastening bolt 52 is generally large, it is impossible to penetrate both the connection partner conductor and the conductor piece, but the rigidity of the thin wire or the medium wire is not high. In the routing material, it is possible to absorb the positional deviation within a range where the bending is possible, and the fastening bolt 52 can be penetrated. On the other hand, since the high-rigidity wiring materials such as the flat conductors 87A to 87D have higher rigidity than the thin wire and the medium wire, the fastening bolt 52 may not be able to pass therethrough. However, in the tolerance absorbing structure according to the first embodiment in which the tolerance absorbing portion is the long hole 22, the fastening bolt 52 can be moved in the extending direction of the long hole 22. Therefore, the flat conductors 87A to 87D, etc. The positional deviation within the tolerance range generated in the rigid wiring material is absorbed by the movement of the fastening bolt 52. As a result, the fastening bolt 52 is prevented from being inserted through the routing material connection portion 89 and the routing material connection portion 90.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
FIG. 7 is an external perspective view of a connection box 11 having a tolerance absorbing structure according to the second embodiment of the present invention. Note that in the second embodiment, the same members as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In the tolerance absorbing structure of the conductor connection portion according to the second embodiment, the connection partner conductor is provided in the connection box 11.

  As shown in FIGS. 7 to 9, the connection box 11 according to the second embodiment is an insulating housing case that houses the laminated conductive member 13. The connection box 11 includes an accommodation box 15 and a lid case 17, and the laminated conductive member 13 is covered with the accommodation box 15 and the lid case 17. The connection box 11 is formed of a flat and substantially hexahedron. A total of four connection openings 19 are formed on each side portion of the connection box 11 so as to protrude from each side portion. Each connection opening 19 has a plurality (four in the illustrated example) of connection ports 21. In each connection port 21, first to fourth connection pieces 35, 37, 39, and 41 described later are disposed. The flat conductors (conductors) 87A to 87D made of the highly rigid wiring member 85 are electrically connected to the respective connection pieces arranged in the respective connection ports 21. In the second embodiment, each of the first to fourth connection pieces 35, 37, 39, 41 of the laminated conductive member 13 and the flat conductors 87 </ b> A to 87 </ b> D of the second high-rigidity routing material 98 are connected. The part becomes the conductor connection part 12A.

  As shown in FIG. 8, the laminated conductive member 13 accommodated in the connection box 11 is formed by laminating flat plate portions 23A to 23D made of a plurality of flat plate-like conductive materials. The number of the flat plate portions 23A to 23D to be laminated is the number of the flat conductors 87A to 87D of the second high-rigidity routing material 98 (routing material 85) to be connected. In the second embodiment, since the number of the flat conductors 87A to 87D of the second high-rigidity routing material 98 is four, the flat plate portions 23A to 23D are four.

  In the second embodiment, the flat plate portions 23A to 23D that are square in plan view are first to protrude side by side so as not to overlap in the stacking direction from the outer peripheral edges 25 of the stacked flat plate portions 23A to 23D. It has 4th connection piece 35,37,39,41. These first to fourth connection pieces 35, 37, 39, and 41 are connected to correspond to the flat conductors 87A to 87D of the second high-rigidity routing material 98, which is a high-rigidity routing material, respectively (see FIG. 10). The first to fourth connection pieces 35, 37, 39, 41 constitute a plurality of groups of connection portions. In the illustrated example, the laminated conductive member 13 includes, on each side part, a first group of connection parts 27, a second group of connection parts 29, a third group of connection parts 31, and a fourth group of connection parts 33. A total of four groups of connection portions are provided. First to fourth connection pieces 35, 37, 39, and 41 are disposed in the connection portions 27, 29, 31, and 33 of the first group to the fourth group, respectively. Each connecting piece is provided with a long hole 22 for connecting the flat conductors 87A to 87D of the second high-rigidity wiring material 98, the downstream wiring material 97, and the branch wiring material 101 by bolt fastening. ing. In the second embodiment, the long holes 22 formed in each of the first to fourth connection pieces 35, 37, 39, and 41 serve as a tolerance absorbing portion.

FIG. 9 is an exploded perspective view of the connection box 11 shown in FIG.
In the second embodiment, each of the flat plate portions 23A to 23D from which the first to fourth connection pieces 35, 37, 39, and 41 project is formed from two types of flat plate members 45 and 47, respectively. The The laminated conductive member 13 has a flat plate-shaped member 45 facing upward on the first lower layer, a flat plate-shaped member 47 facing upward on the second layer, and the back of the flat-shaped member 47 facing upward on the third layer. The four layers are laminated with the back of the flat plate member 45 facing upward. Accordingly, as shown in FIG. 8, the first to fourth connection pieces 35, 37, 39, and 41 are respectively connected to the connection portions 27, 29, 31, and 33 of the first group to the fourth group. It will be in the state which protruded in the horizontal direction so that it may not overlap with the lamination direction from the outer periphery 25 of flat plate part 23A-23D.

  At the bottom of each connection port 21 in the connection opening 19 of the storage box 15, a stud bolt 49 as a fastening member is provided movably along a guide groove 24 described later. The stud bolt 49 is inserted through the elongated holes 22 of the first to fourth connection pieces 35, 37, 39, 41. A fixing nut 51 is screwed into the stud bolt 49 that passes through the elongated hole 22. As a result, the wiring material connecting portions 89 of the flat conductors 87A to 87D in which the bolt fixing holes 43 are formed can be fastened to the first to fourth connecting pieces 35, 37, 39, and 41, respectively. Yes. At the same time, the stud bolt 49 also has a role of fixing the laminated conductive member 13 to the storage box 15. In this way, the laminated conductive member 13 fixed to the storage box 15 is stored in the connection box 11 and most of the cover case 17 is covered by the cover case 17 being fixed to the storage box 15 by the case fixing screw 53. Is called.

  As shown in FIG. 11, the first to fourth connection pieces 35, 37, 39, and 41 that are connection partner conductors are formed in the bottom wall of each connection port 21 in the connection opening 19 of the connection box 11. A guide groove 24 is formed along the direction in which the elongated hole 22 extends. The guide groove 24 is formed by a dovetail so that the head formed in a square shape of the stud bolt 49 is slidably engaged. As a result, the stud bolts 49 are provided in the elongated holes 22 of the first to fourth connecting pieces 35, 37, 39, 41 arranged in the respective connection ports 21 so as to be movable in the longitudinal direction of the elongated holes 22. .

  The laminated conductive member 13 includes an insulating layer 55 that electrically insulates the flat plate portions between the flat plate portions 23A to 23D. The insulating layer 55 can be formed, for example, by powder coating on at least one of the front and back surfaces of the flat plate portions 23A to 23D. In the present embodiment, insulating layers 55 are formed on the front and back surfaces of the flat plate portions 23A to 23D. There are mainly two types of powder coating: “electrostatic coating method (spray coating)” and “fluid dipping method (dip coating)”.

  In the tolerance absorbing structure of the conductor connection portion 12A according to the second embodiment, the first to fourth connection pieces 35, 37, 39, and 41, which are connection partner conductors, are outer peripheral edges of the respective flat plate portions 23A to 23D. The stud bolts 49 are formed so as to protrude away from each other, and the stud bolts 49 are provided so as to be movable along the guide grooves 24 formed in the connection box 11 along the extending direction of the elongated holes 22. The first to fourth connection pieces 35, 37, 39, 41 having the long holes 22, which are tolerance absorbing portions, are disposed at the connection ports 21 of the connection opening 19 in the connection box 11. The wiring member connecting portions 89 of the first high-rigidity wiring material 96, which are conductor pieces, are inserted into the connection ports 21, respectively. A stud bolt 49 inserted into the elongated hole 22 of the first to fourth connection pieces 35, 37, 39, 41 is inserted into the bolt fixing hole 43 of the routing material connection portion 89 inserted into the connection port 21. The When the fixing nut 51 is screwed onto the stud bolt 49, the first to fourth connection pieces 35, 37, 39, and 41, which are connection partner conductors, are connected to the wiring member connection portions which are conductor pieces. 89 is electrically connected.

  Like the tolerance absorbing structure of the conductor connection portion 12B according to the modification of the second embodiment shown in FIG. 12, the biasing member 26 is provided in the guide groove 24 of the connection opening 19 in the connection box 11 in the back wall. And the head of the stud bolt 49 may be disposed. As the urging member 26, for example, a compression coil spring can be used. The urging member 26 inserted into the guide groove 24 urges the stud bolt 49 to the right in FIG. The biased stud bolt 49 abuts against one end (the right end in FIG. 12) of the elongated hole 22 of the first to fourth connection pieces 35, 37, 39, 41 and the movement is restricted. The stud bolt 49 can move along the elongated hole 22 against the urging force of the urging member 26. Therefore, according to this configuration, the stud bolt 49 to which the routing member connecting portion 89 of the second high-rigidity routing material 98 is not connected is held in a state of being biased toward one end side of the long hole 22.

As shown in FIG. 13, for example, in the case of a conventional wiring arrangement in which power is supplied from a vehicle-mounted battery 107 to a device 109 at various places through the junction box 105 once, there is a problem that the wire length becomes long. Moreover, since the extra electric wire 111 increases, there existed a problem which led to a weight increase and a cost increase.
On the other hand, as shown in FIG. 14, the connection box 11 and the routing material 85 (first high-rigidity routing material 96, second high-rigidity routing material 98, downstream-side routing material 97, and branching routing material 101. Etc.), the connection box 11 is interposed at a necessary location of the routing material 85 from the in-vehicle battery 107, and power can be sent from each connection box 11 to the equipment 109 at each location. Therefore, the wire length can be shortened. Moreover, since an unnecessary electric wire does not increase, a weight and cost can be reduced.

Next, the operation of the tolerance absorbing structure according to the second embodiment described above will be described.
In the tolerance absorbing structure of the conductor connection portion 12A according to the second embodiment, the first to fourth connection pieces 35 and 37, which are connection counterpart conductors having the long holes 22 in the connection opening 19 of the connection box 11. , 39, 41 are arranged. The guide groove 24 formed in the connection opening 19 guides the stud bolt 49 penetrating the elongated hole 22 so as to be movable in the longitudinal direction of the elongated hole 22. The displacement of the tolerance range generated in the highly rigid wiring material such as the first to fourth connection pieces 35, 37, 39, 41 and the second high rigidity wiring material 98 is moved by the stud bolt 49. Is absorbed by. Thereby, the stud bolt 49 is prevented from being inserted into the first to fourth connection pieces 35, 37, 39, 41 and the routing material connection portion 89.

  Moreover, the 1st-4th connection pieces 35, 37, 39, and 41 as a connection other party conductor are provided in each of several laminated flat plate part 23A-23D. The plurality of first to fourth connection pieces 35, 37, 39, 41 are the total thickness of the flat plate portions 23 A to 23 D equal to the number of the flat conductors 87 A to 87 D and the total of the insulating layers 55 provided therebetween. Only the sum with the thickness becomes the thickness in the stacking direction, and can be formed thin. As a result, it is possible to absorb the positional deviation that occurs in the range of tolerance even in the second high-rigidity routing material 98 while saving space in the routing space.

  Further, in the tolerance absorbing structure of the conductor connecting portion 12B according to the modification of the second embodiment, the stud bolt 49 can be moved to the optimum position against the urging force of the urging member 26. The moved stud bolt 49 fastens the first to fourth connecting pieces 35, 37, 39, 41 and the routing material connecting portion 89 at the position where the biasing member 26 is stored. When the cabling material connecting portion 89 is not connected to the first to fourth connection pieces 35, 37, 39, 41, the stud bolt 49 is biased toward one end side of the guide groove 24 by the urging force of the urging member 26. It is held in the state. Thereby, for example, rattling of the stud bolt 49 due to vibration during traveling of the vehicle is suppressed even in the first to fourth connection pieces 35, 37, 39, 41 in which the routing member connection portion 89 is not connected. The

(Third embodiment)
Next, a third embodiment of the present invention will be described.
15 is an external perspective view of a connection box 28 having a tolerance absorbing structure according to the third embodiment of the present invention, and FIG. 16 is an external perspective view of the connection box 28 shown in FIG. In the third embodiment, the same members as those described in the first embodiment and the second embodiment are denoted by the same reference numerals, and redundant description is omitted.
As shown in FIG. 15, in the connection box 28 of the third embodiment, the case 141 is formed of a substantially hexahedron. A total of four connection openings 19 are formed on each side portion of the connection box 28 so as to protrude from each side portion. Each connection opening 19 has a plurality (two in the illustrated example) of connection ports 21. In addition, since the branch direction of these power supplies in the connection box 28 depends on the routing direction of the high-rigidity routing material 186 (see FIG. 19), it is not limited to the shape of the illustrated example, and an optimum position is selected and processed. The branching direction can be changed freely.

  Each connection port 21 is provided with first connection pieces 47A to 47D and second connection pieces 49A to 49D described later. Respective flat conductors (conductors) 32 and 34 (see FIG. 19) of the high-rigidity wiring member 186 are electrically connected to the respective connection pieces arranged in the respective connection ports 21. Each connection piece is provided with a bolt fixing hole 179 for electrically connecting the flat conductors 32 and 34 of the high-rigidity wiring member 186 by bolt fastening.

  Each connection port 21 is partitioned by a partition wall 195. At the bottom of each connection port 21, for example, a recess 191 for planting a stud bolt 80 is formed. The stud bolt 80 may be insert-molded in the case 141 in advance. A screw hole 193 for fixing the lid case 17 to the case 141 with a fixing screw (not shown) is formed on the outer side of each corner portion of the case 141.

As shown in FIGS. 17 and 18, the laminated conductive member 113 accommodated in the connection box 28 is formed by laminating a first flat plate portion 131 and a second flat plate portion 133 made of a plurality of flat plate-like conductive materials. .
In the third embodiment, the flat plate portions 131 and 133 that are square in a plan view are connected in parallel from the outer peripheral edges of the stacked flat plate portions 131 and 133 so as not to overlap in the stacking direction. It has pieces 47A to 47D and second connection pieces 49A to 49D.

  As for the 1st flat plate part 131, the corner | angular part pinched | interposed into 47 A of 1st connection pieces and the 1st connection piece 47B becomes the empty space 183, and the 2nd connection piece in the 2nd flat plate part 133 is here at the time of flat plate part lamination | stacking. 49A and the second connection piece 49B are arranged. On the other hand, as for the 2nd flat plate part 133, the corner | angular part pinched | interposed into the 2nd connection piece 49C and the 2nd connection piece 49D becomes the empty space 183, and at the time of flat plate part lamination | stacking, it is here in the 1st flat plate part 131 in the 1st flat plate part 131. The connection piece 47C and the first connection piece 47D are arranged. The case 141 is formed with a flat plate portion accommodating recess 187 for accommodating the first flat plate portion 131 and the second flat plate portion 133.

  As illustrated in FIG. 19, the tolerance absorbing structure of the conductor connection portion 12 </ b> C according to the third embodiment includes a first connection piece 47 </ b> A and a second connection piece 49 </ b> A in the first flat plate portion 131 and the second flat plate portion 133. And the wiring material connecting portion 189 of the flat conductors 32 and 34 in the high-rigidity wiring material 186. Therefore, a tolerance absorbing portion is provided in the first connecting piece 47A and the second connecting piece 49A and the routing material connecting portion 189 of the flat conductors 32 and 34.

In the third embodiment, the tolerance absorbing portion is a plurality of fastening insertion holes 38 scattered along the connecting direction of the high-rigidity wiring material 186.
In the third embodiment, only the first connection piece 47A and the second connection piece 49A are projected from the connection opening 19 of the connection box 28. However, the first connection pieces 47A to 47D and the second connection piece 49A are used. The connection pieces 49A to 49D can be configured to project arbitrary connection pieces.

Next, the operation of the tolerance absorbing structure according to the third embodiment described above will be described.
In the tolerance absorbing structure for the conductor connecting portion 12C according to the third embodiment, the fastening bolt 52, which is a fastening member, has a first connecting piece 47A and a second connecting piece 49A protruding from the connecting opening 19, and a high height. Of the plurality of fastening insertion holes 38 interspersed with the routing material connection portion 189 of the rigid routing material 186, for example, both the first connection piece 47A and the routing material connection portion 189 are shown in FIG. The optimum fastening insertion hole 38 that can be passed through is selected and inserted. The positional deviation within the tolerance range generated in the first connecting piece 47A and the high-rigidity routing member 186 is absorbed by the selection of the optimum fastening insertion hole 38. Thereby, the fastening bolt 52 is prevented from being inserted through the first connecting piece 47A and the routing member connecting portion 189.

  Further, in the tolerance absorbing structure of the conductor connection portion 12C according to the third embodiment, the first connection pieces 47A to 47D and the second connection pieces 49A to 49D as connection counterpart conductors are stacked in a plurality of first. It is provided on each of the first flat plate portion 131 and the second flat plate portion 133. The plurality of first connection pieces 47A to 47D and second connection pieces 49A to 49D are equal to the total thickness of the first flat plate portion 131 and the second flat plate portion 133 equal to the number of the flat conductors 32 and 34, and between them. Only the sum of the total thickness of the insulating layers 55 provided is the thickness in the stacking direction and can be formed thin. As a result, it is possible to absorb the positional deviation that occurs within the tolerance range even in the high-rigidity routing material 186, while saving space in the routing space.

  Therefore, according to the tolerance absorbing structure of the conductor connecting portions 12 to 12C according to the present embodiment, the assembling property of the routing member 85 having high rigidity can be improved.

  The present invention is not limited to the above-described embodiments, and the configurations of the embodiments may be combined with each other, or may be modified or applied by those skilled in the art based on the description of the specification and well-known techniques. The invention is intended and is within the scope of seeking protection.

  For example, in the branch box having the above-described configuration, the case where the flat plate portion is a quadrangle has been described as an example. However, the shape of the flat plate portion is not limited to this, and in addition to a circle, an oval, an ellipse, a triangle, a pentagon, a hexagon It may be a polygon such as a square or an octagon.

Here, the features of the embodiment of the above-described tolerance absorption structure of the conductor connection portion according to the present invention are briefly summarized and listed in the following [1] to [6], respectively.
[1] Connection partner conductor (laying material connection portion 89);
A conductor piece portion (routing material connection portion 90) formed at the end of the conductor of the highly rigid routing material (second high rigidity routing material 98) and parallel to the connection surface of the connection partner conductor;
A fastening member (fastening bolt) that penetrates the connection partner conductor and the conductor piece portion stacked in parallel in a direction perpendicular to the connection surface and fastens and electrically connects the connection partner conductor and the conductor piece portion. 52),
The fastening member is provided on at least one of the connection partner conductor and the conductor piece portion and extends or is scattered along the connection direction of the highly rigid wiring material. Tolerance absorbing portion (long hole 22) penetrating at different positions in the direction;
A tolerance absorbing structure for the conductor connecting portion (12), characterized by comprising:
[2] The tolerance absorbing portion is
The short diameter is substantially equal to the outer diameter of the fastening member (fastening bolt 52), and the long diameter extends along the connecting direction of the highly rigid routing material (second high-rigidity routing material 98). The tolerance absorbing structure for the conductor connecting portion (12) according to the above [1], which is a longer hole (22) formed larger.
[3] The tolerance absorbing portion is
The conductor connecting portion according to the above [1], wherein the conductor connecting portions are a plurality of fastening insertion holes (38) scattered along the connecting direction of the high-rigidity wiring material (high-rigidity wiring material 186). (12C) tolerance absorbing structure.
[4] A plurality of flat plate portions (23A to 23D) made of a conductive material are laminated by electrically insulating each flat plate portion with an insulating layer (55),
The connection partner conductors (first to fourth connection pieces 35, 37, 39, 41) are formed so as to protrude from the outer peripheral edge of each flat plate portion,
The flat plate portion and the connection partner conductor are accommodated in a connection box (11) made of an insulating resin having a connection opening (connection opening 19) into which the conductor piece portion (routing material connection portion 89) is inserted. ,
The fastening member (stud bolt 49) is provided movably along a guide groove (24) formed in the connection box in the extending direction of the elongated hole (22). [2] The tolerance absorbing structure of the conductor connecting portion (12A) according to [2].
[5] A biasing member (26) for biasing the fastening member (stud bolt 49) toward one end of the guide groove is inserted into the guide groove (24). ] The tolerance absorption structure of the conductor connection part (12B) of description.
[6] A plurality of flat plate portions (first flat plate portion 131 and second flat plate portion 133) made of a conductive material are laminated by electrically insulating each flat plate portion by an insulating layer (55),
The connection partner conductors (the first connection piece 47A and the second connection piece 49A) are formed so as to protrude away from the outer peripheral edge of each flat plate portion,
The flat plate portion is accommodated in a connection box (28) made of insulating resin,
The tolerance absorbing structure for a conductor connection part (12C) according to [3], wherein the connection partner conductor protrudes from a connection opening part (19) of the connection box.

12 ... Conductor connection part 19 ... Connection opening part 22 ... Slot (tolerance absorption part)
52 ... Fastening bolt (fastening member)
55 ... Insulating layer 85 ... Routing material (rigid routing material)
87A-87D ... Flat conductor (conductor)
89 ... Wiring connection part (connection partner conductor)
90 ... wiring member connection part (conductor piece part)
96 ... 1st highly rigid wiring material (rigid wiring material with high rigidity)
98 ... Second high-rigidity routing material (high-rigidity routing material)
99 ... Upstream side routing material (rigid routing material)

Claims (6)

Connection partner conductor,
A conductor piece formed at the end of the conductor of the highly rigid routing material and parallel to the connection surface of the connection partner conductor;
A fastening member that penetrates the connection partner conductor and the conductor piece portion stacked in parallel in a direction perpendicular to the connection surface and fastens and electrically connects the connection partner conductor and the conductor piece portion;
The fastening member is provided on at least one of the connection partner conductor and the conductor piece portion and extends or is scattered along the connection direction of the highly rigid wiring material. Tolerance absorbers that penetrate at different positions,
A tolerance-absorbing structure for a conductor connecting portion, comprising: The tolerance absorber is
The short hole is substantially equal to the outer diameter of the fastening member, and the long diameter is a long hole extending along the connecting direction of the highly rigid routing material and formed larger than the short diameter. Item 2. The tolerance absorbing structure for a conductor connection part according to Item 1. The tolerance absorber is
The tolerance absorbing structure for a conductor connecting portion according to claim 1, wherein the plurality of through holes for fastening are scattered along a connecting direction of the highly rigid routing material. A plurality of flat plate portions made of a conductive material are laminated by electrically insulating each flat plate portion by an insulating layer,
The connection partner conductor is formed so as to protrude away from the outer peripheral edge of each flat plate portion,
The flat plate portion and the connection partner conductor are accommodated in a connection box made of insulating resin having a connection opening into which the conductor piece portion is inserted,
The tolerance absorbing structure for a conductor connection part according to claim 2, wherein the fastening member is provided so as to be movable along a guide groove formed in the connection box in the extending direction of the elongated hole. .   The tolerance absorbing structure for a conductor connecting portion according to claim 4, wherein a biasing member for biasing the fastening member toward one end of the guide groove is inserted into the guide groove. A plurality of flat plate portions made of a conductive material are laminated by electrically insulating each flat plate portion by an insulating layer,
The connection partner conductor is formed so as to protrude away from the outer peripheral edge of each flat plate portion,
The flat plate portion is accommodated in a connection box made of insulating resin,
The tolerance absorbing structure for a conductor connection part according to claim 3, wherein the connection partner conductor protrudes from a connection opening part of the connection box.

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