WO2023127505A1

WO2023127505A1 - Routing structure

Info

Publication number: WO2023127505A1
Application number: PCT/JP2022/046109
Authority: WO
Inventors: 匡宏牧野; 潤下津佐
Original assignee: 矢崎総業株式会社
Priority date: 2021-12-27
Filing date: 2022-12-14
Publication date: 2023-07-06
Also published as: JP2023097198A

Abstract

Provided is a routing structure of a routing member (100) to be connected to an electrical junction box (1) through a ferrite ring (71), the routing member (100) comprising an electrical wire (60), and a bus-bar plate (10) at least a part of which is covered by a case (30). The electrical wire (60) and the bus-bar plate (10) are inserted through the ferrite ring (71) while being adjacent to each other, and the case (30) has, on the front and rear sides of a portion corresponding to where the inserted bus-bar plate (10) is in the ferrite ring (71), spherical supporting protrusions (41, 42) that come into contact with the inner surface of the ferrite ring (71).

Description

routing structure

The present invention relates to a wiring structure.

Patent Literature 1, for example, discloses that, in an electric connection box mounted on an automobile, noise is absorbed by fitting a magnetic ring to the outer circumference of a portion of a busbar housed in a case. .

Japanese Utility Model Laid-Open No. 5-15619

By the way, in the electric junction box mounted on the vehicle, in order to reduce noise, there is a case where the ring-shaped ferrite attached to the body side of the vehicle such as an automobile is wired through a busbar that connects to the electric junction box. In such a case, if the ferrite and the busbar are relatively tilted or if there is an assembly error between the ferrite and the busbar, it may be difficult to route the busbar.

With the wiring structure according to the embodiment, it is possible to easily pass the bus bar connected to the electrical junction box through the ring-shaped ferrite and wire it.

A wiring structure according to an embodiment is a wiring structure of a wiring member that is passed through an annular ferrite and connected to an electrical connection box.
The wiring member includes an electric wire and a plate-shaped bus bar at least partially covered with a case.
The electric wire and the bus bar are adjacent to each other and passed through the ferrite.
The case has spherical support projections that contact the inner surface of the ferrite on the front and back sides of the insertion portion of the bus bar into the ferrite.

According to the embodiment, it is possible to provide a wiring structure in which the bus bar connected to the electrical junction box can be easily passed through the ring-shaped ferrite and wired.

FIG. 1 is a perspective view of a connecting portion of a wiring member in an electric connection box to which the wiring structure according to the present embodiment is applied. FIG. 2 is a perspective view of a wiring member. FIG. 3 is a perspective view of the wiring member with the ferrite case removed. FIG. 4 is a perspective view of a wiring member showing a state in which ferrite is split. FIG. 5 is a plan view of the wiring member with the ferrite case removed. FIG. 6 is a perspective view of a busbar to which a case is attached. FIG. 7 is a perspective view of the busbar to which the case is attached, viewed from the lower surface side. 8 is an enlarged view of the B portion in FIG. 6. FIG. 9 is an enlarged view of a portion C in FIG. 7. FIG. FIG. 10 is a cross-sectional view taken along line AA in FIG.

A specific embodiment of the present invention will be described below with reference to each drawing.

FIG. 1 is a perspective view of a connecting portion of a wiring member in an electric connection box to which the wiring structure according to the present embodiment is applied.
As shown in FIG. 1, the wiring structure in this embodiment is a structure for wiring a wiring member 100 to an electric connection box 1 such as a junction block. The electric connection box 1 has two

terminal portions

2 and 3 . The wiring member 100 includes busbars 10 and electric wires 60 as wiring members, and the ends of the busbars 10 and electric wires 60 are fastened and connected to the

terminal portions

2 and 3 of the electric connection box 1 . ing. Thus, the wiring member 100 is wired to the electrical connection box 1 . The bus bar 10 and the electric wire 60 of the wiring member 100 are wiring members that are connected from the electric connection box 1 to a battery or the like, and one of them is a positive electrode and the other is a negative electrode.

FIG. 2 is a perspective view of the wiring member. FIG. 3 is a perspective view of the wiring member with the ferrite case removed. FIG. 4 is a perspective view of a wiring member showing a state in which ferrite is split. FIG. 5 is a plan view of the wiring member with the ferrite case removed.

As shown in FIGS. 2 to 5, the wiring member 100 including the busbar 10 and the electric wire 60 has a ferrite portion 70. As shown in FIG. A ferrite 71 is provided in the ferrite portion 70, and the ferrite 71 is covered with a ferrite case 72 made of insulating resin. The ferrite 71 is composed of a pair of

split ferrites

71a and 71b, and these

split ferrites

71a and 71b are combined to form an elliptical ring. The ferrite 71 is attached to the body of an automobile or the like with a bracket or the like while being covered with a ferrite case 72 .

The bus bar 10 and the electric wire 60 are passed through an annular ferrite 71, and the outer periphery thereof is covered with the ferrite 71 in the circumferential direction. As a result, the ferrite 71 suppresses the generation of noise even when a high-voltage, high-current current flows through the bus bar 10 and the electric wire 60 . In the ferrite 71, the bus bar 10 and the electric wire 60 are arranged as

parallel wiring portions

10A and 60A that are arranged close to each other in parallel.

The electric wire 60 arranged in parallel with the bus bar 10 is made of an insulated wire in which the outer circumference of the core wire is covered with a jacket made of an insulating resin, and one end thereof is connected to a terminal fitting 61 having a hole 61a. there is A terminal fitting 61 provided at one end of the electric wire 60 is connected to the terminal portion 3 of the electrical junction box, and the other end is connected to, for example, a battery terminal.

FIG. 6 is a perspective view of the busbar with the case attached. FIG. 7 is a perspective view of the busbar to which the case is attached, viewed from the lower surface side.

As shown in FIGS. 6 and 7, one end of the busbar 10 has a connection portion 21 having a hole 21a, and this connection portion 21 is connected to the terminal portion 2 of the electrical connection box 1. . An electric wire 23 is connected to the other end of the bus bar 10 . This electric wire 23 is connected to, for example, a terminal of a battery.

The bus bar 10 is formed in a plate shape. The bus bar 10 is made of a plate material made of a conductive metal material such as copper, copper alloy, aluminum, or aluminum alloy. The busbar 10 is covered with a case 30 molded from an insulating resin material, except for the connecting portion 21 . The case 30 is composed of a first case 31 and a second case 32 .

The first case 31 is attached to the lower side of the busbar 10 , and the lower side of the busbar 10 is covered with the first case 31 . The second case 32 is mounted on the upper side of the busbar 10 , and the upper side of the busbar 10 is covered with the second case 32 . The second case 32 is assembled to the first case 31 attached to the busbar 10 from above. As a result, the first case 31 and the second case 32 are attached to the busbar 10 , and the busbar 10 is covered with the case 30 composed of the first case 31 and the second case 32 .

The case 30 consisting of the first case 31 and the second case 32 has a plurality of locking portions 37. The lock portion 37 is composed of a locking claw 38 formed in the first case 31 and a locking hole 39 formed in the second case 32 . By assembling the second case 32 to the first case 31 attached to the busbar 10 , the locking claws 38 enter the locking holes 39 to lock the locking portions 37 . As a result, the first case 31 and the second case 32 are locked together.

In the parallel wiring portion 10A of the busbar 10, the case 30 covering the busbar 10 has two

support projections

41 and 42. These

support protrusions

41 and 42 are provided on the front and back sides of the case 30 .

8 is an enlarged view of the B portion in FIG. 6. FIG. 9 is an enlarged view of a portion C in FIG. 7. FIG. FIG. 10 is a cross-sectional view taken along line AA in FIG.
As shown in FIGS. 8 and 9, the

support projections

41 and 42 provided on the case 30 are each formed in a spherical shape. One support projection 41 is integrally formed with the first case 31 (see FIG. 9), and the other support projection 42 is integrally formed with the second case 32 (see FIG. 8).

As shown in FIG. 9, a plurality of ribs 45 are integrally formed around the support projection 41 and extend from the support projection 41 toward the outer periphery. These ribs 45 have a lower projection height than the support projections 41 . In this example, four ribs 45 are formed around the support projection 41 at regular intervals in the circumferential direction. A pair of ribs 45 facing each other are formed along the longitudinal direction of busbar 10 , and another pair of ribs 45 facing each other are formed along the width direction of busbar 10 .

As shown in FIG. 8, a plurality of ribs 46 are integrally formed around the support projection 42 and extend from the support projection 42 toward the outer circumference. These ribs 46 have a lower projection height than the support projections 42 . In this example, four ribs 46 are formed around the support projection 42 at regular intervals in the circumferential direction. A pair of ribs 46 facing each other are formed along the longitudinal direction of busbar 10 , and another pair of ribs 46 facing each other are formed along the width direction of busbar 10 .

As shown in FIG. 10, when the parallel wiring portion 10A of the bus bar 10 provided with the

support projections

41 and 42 on the case 30 is wired so as to pass through the ferrite 71 composed of the

split ferrites

71a and 71b, the respective support The

projections

41 and 42 contact the inner surface of the ferrite 71 respectively. At this time, since the

support projections

41 and 42 are formed in a spherical shape, they come into point contact with the inner surface of the ferrite 71 .

By the way, the ferrite 71 through which the bus bar 10 and the electric wire 60 are inserted is covered with a ferrite case 72 and attached to the body side of the vehicle. Therefore, the bus bar 10 connected to the electric junction box 1 may be tilted relative to the ferrite 71, or an assembly error may occur between the ferrite 71 and the bus bar 10.

Even in such a case, the

support projections

41 and 42 of the case 30 of the busbar 10 are in point contact with the inner surface of the ferrite 71, so that the busbar 10 can be passed through the ferrite 71 and easily connected to the electric connection box 1 without difficulty. routed to

As described above, according to the wiring structure according to the present embodiment, in the bus bar 10 which is passed through the ferrite 71 and is adjacent to the electric wire 60, the

support projections

41 and 42 provided on the case 30 covering the bus bar 10 contacts the inner surface of the ferrite 71 . As a result, the bus bar 10 passed through the ferrite 71 is routed while being well supported. Since the

support projections

41 and 42 provided on the case 30 are spherically formed, they come into point contact with the inner surface of the ferrite 71 . Therefore, even if the bus bar 10 connected to the electric connection box 1 is tilted relative to the ferrite 71 or if an assembly error occurs between the ferrite 71 and the bus bar 10, the bus bar 10 can be passed through the ferrite 71. can be easily routed to the electric connection box 1 without difficulty.

In addition, since the case 30 has

ribs

45 and 46 extending from the

support projections

41 and 42 that contact the inner surface of the ferrite 71, the formation locations of the

support projections

41 and 42 in the case 30 are determined by the

ribs

45 and 46. Reinforced. Therefore, even if force is applied to the

support protrusions

41 and 42 when the vehicle vibrates in the vertical direction, the influence of the force on the case 30 can be suppressed by the

ribs

45 and 46 .

Moreover, since the

ribs

45 and 46 have a projection height lower than that of the

support projections

41 and 42, the

ribs

45 and 46 contact the inner surface of the ferrite 71, thereby preventing the application of excessive force to the case 30. It is possible to support the bus bar 10 by bringing the

support projections

41 and 42 into contact with the inner surface of the ferrite 71 while suppressing it.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

Here, the features of the embodiments of the wiring structure according to the present invention described above are summarized and listed briefly in [1] to [3] below.
[1] A wiring structure for a wiring member (100) that is passed through an annular ferrite (71) and connected to an electrical connection box (1),
The wiring member (100) includes an electric wire (60) and a plate-like bus bar (10) at least partially covered with a case (30),
The electric wire (60) and the busbar (10) are adjacent to each other and passed through the ferrite (71),
The case (30) has spherical support projections (41, 42) contacting the inner surface of the ferrite (71) on the front and back sides of the portion where the bus bar (10) is inserted into the ferrite (71). cord structure.

According to the wiring structure of the configuration [1] above, in the bus bar that is passed through the ferrite and is adjacent to the electric wire, the support projections provided on the case that covers the bus bar come into contact with the inner surface of the ferrite. As a result, the bus bar passed through the ferrite is routed while being well supported. Since the support projections provided on the case are formed in a spherical shape, they come into point contact with the inner surface of the ferrite. Therefore, even if the busbar connected to the electrical junction box is tilted relative to the ferrite, or if there is an assembly error between the ferrite and the busbar, the busbar can be passed through the ferrite and connected to the electrical junction box without difficulty. Can be easily routed.

[2] The case (30) has ribs (45, 46) extending from the support projections (41, 42),
The routing structure according to [1] above.

According to the wiring structure of the configuration [2], the case has ribs extending from the support projections that contact the inner surface of the ferrite, so that the ribs reinforce the formation locations of the support projections in the case. . Therefore, even if force is applied to the support projection when the vehicle vibrates in the vertical direction, the rib can suppress the influence of the force on the case.

[3] The ribs (45, 46) have a lower protrusion height than the support protrusions (41, 42),
The routing structure described in [2] above.

According to the wiring structure of the above [3], since the rib has a projection height lower than that of the support projection, the rib contacts the inner surface of the ferrite, and an excessive force acts on the case. The bus bar can be supported by contacting the support protrusions with the inner surface of the ferrite while suppressing the

Various embodiments have been described above with reference to the drawings, but it goes without saying that the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications or modifications within the scope described in the claims, and these also belong to the technical scope of the present invention. Understood. Moreover, each component in the above embodiments may be combined arbitrarily without departing from the spirit of the invention.

This application is based on a Japanese patent application (Japanese Patent Application No. 2021-213417) filed on December 27, 2021, the content of which is incorporated herein by reference.

1

electrical connection box

2, 3 terminal portion 10 bus bar 10A parallel wiring portion 21 connection portion 21a hole portion 23 electric wire 30 case 31 first case 32 second case 37 locking portion 38 locking claw 39 locking

hole

41, 42

support projection

45, 46 rib 60 electric wire 60A parallel wiring part 61 terminal fitting 61a hole 70 ferrite part 71

ferrite

71a, 71b split ferrite 72 ferrite case 100 wiring member

Claims

A wiring structure of a wiring member that is passed through an annular ferrite and connected to an electric connection box,
The wiring member includes an electric wire and a plate-shaped busbar at least partially covered with a case,
the electric wire and the busbar are adjacent to each other and passed through the ferrite;
The case has spherical support projections that contact the inner surface of the ferrite on the front and back sides of the insertion point of the bus bar into the ferrite,
routing structure.
the case has ribs extending from the support protrusions,
The wiring structure according to claim 1.
The rib has a lower protrusion height than the support protrusion,
The wiring structure according to claim 2.