JP2023097197A - Wiring structure - Google Patents

Abstract

To provide a wiring structure capable of performing wiring by smoothly housing a bus bar covered with a case, into a housing recess.SOLUTION: A case 30 covering a bus bar 10, includes a first case 31 that is attached from one side of the bus bar 10, a second case 32 that is attached from the other side of the bus bar 10, a lock portion 40 that locks the first case 31 and the second case 32 to each other at respective both side portions of these cases, and an insertion guide portion 45 having a pair of guide ribs 46 disposed on both side portions of the first case 31 in a housing point housed in a housing recess 1 and projected outwardly in the width direction. The insertion guide portion 45 has a width dimension W2 larger than that of a portion where the lock portion 40 in the case 30 is disposed. Toward the front side in the insertion direction of the case 30 into the housing recess 1, the guide ribs 46 are inclined to the center side in the width direction of the case 30.SELECTED DRAWING: Figure 5

Description

The present invention relates to routing structures.

For example, an electric connection box such as a junction block mounted on a vehicle such as an automobile includes wiring to be connected to a battery, and a busbar made of a metal plate is used as wiring through which a large current flows, such as a power supply line. (See Patent Document 1, for example).

Japanese Unexamined Patent Application Publication No. 2021-151110

The bus bar as described above is sometimes housed by being fitted into a housing recess of an electric junction box while being covered with a protective portion made of a case.

However, if the position of the case is biased with respect to the accommodation recess when fitting it into the accommodation recess, the case hits the edge of the accommodation recess, and the operation of accommodating the storage recess may be delayed. Further, if the position of the case is biased with respect to the housing recess, even if the case is inserted into the housing recess, the edge of the housing recess hits the locking portion between the lower case and the upper case that constitute the case, causing the lower case to move. and the upper case may separate, and the bus bar may come off from the case.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and its object is to provide a wiring structure that allows the busbars covered with the case to be smoothly housed in the housing recesses for wiring. be.

The above objects of the present invention are achieved by the following configurations.

A wiring structure in which a bus bar covered with a case is housed in a housing recess of an electric connection box and connected to the wiring of the electric connection box for wiring,
Said case is
a first case attached from one side of the bus bar;
a second case attached from the other side of the busbar;
a locking portion that engages both sides of the first case and the second case;
an insertion guide portion having a pair of guide ribs that are provided on both sides of the first case at the accommodation location accommodated in the accommodation recess and project outward in the width direction;
with
The insertion guide portion has a width dimension larger than that of a portion of the case where the lock portion is provided, and the guide rib extends in the width direction of the case toward the front in the insertion direction of the case into the accommodation recess. A routing structure that is slanted toward the center.

ADVANTAGE OF THE INVENTION According to this invention, the wiring structure which can be smoothly accommodated in an accommodating recessed part and can be wired can be provided for the bus bar covered with the case.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following detailed description of the invention (hereinafter referred to as "embodiment") with reference to the accompanying drawings. .

FIG. 1 is a perspective view of a wiring member to which the wiring structure according to this embodiment is applied. FIG. 2 is a plan view of a wiring member to which the wiring structure according to this embodiment is applied. FIG. 3 is a front view of a wiring member to which the wiring structure according to this embodiment is applied. FIG. 4 is a cross-sectional perspective view of a bus bar in a bus bar housing portion that is housed in a housing recess. FIG. 5 is a vertical cross-sectional view showing a state in which the accommodating portion of the bus bar is accommodated in the accommodating concave portion. FIG. 6 is a vertical cross-sectional view for explaining the process of accommodating the accommodating portion of the bus bar into the accommodating recess. FIG. 7 is a vertical cross-sectional view for explaining the process of accommodating the accommodating portion of the bus bar into the accommodating recess. FIG. 8 is a vertical cross-sectional view for explaining a process of accommodating the accommodating portion of the bus bar according to the reference example into the accommodating recess. FIG. 9 is a vertical cross-sectional view for explaining the process of accommodating the accommodating portion of the bus bar according to the reference example into the accommodating recess.

Specific embodiments relating to the present invention will be described below with reference to each drawing.

FIG. 1 is a perspective view of a wiring member to which the wiring structure according to this embodiment is applied. FIG. 2 is a plan view of a wiring member to which the wiring structure according to this embodiment is applied. FIG. 3 is a front view of a wiring member to which the wiring structure according to this embodiment is applied.

As shown in FIGS. 1 to 3, the wiring structure in this embodiment is a structure for wiring the bus bar 10 constituting the wiring member 100 to an electrical junction box (not shown) such as a junction block. The electrical connection box has a recessed housing 1 (see FIG. 3), and the bus bar 10 is housed in the recessed housing 1 and routed.

The wiring member 100 includes a busbar 10 and electric wires 60 . The bus bar 10 and the electric wire 60 are wiring members that are connected from the electrical junction box to a battery or the like, and one of them is a positive electrode and the other is a negative electrode.

These busbars 10 and electric wires 60 are arranged side by side, and ferrites 11 are attached to the joints. The ferrite 11 is composed of a pair of split ferrites 11a and 11b, and these split ferrites 11a and 11b are combined to form an elliptical ring. The bus bar 10 and the electric wire 60 are passed through the ring-shaped ferrite 11, and the outer periphery thereof is covered with the ferrite 11 in the circumferential direction. Thus, even when a high current flows through the bus bar 10 and the electric wire 60, the ferrite 11 suppresses the generation of noise.

One end of the busbar 10 is a connecting portion 21 having a hole 21a, and this connecting portion 21 is connected to the wiring of the electrical connection box. An electric wire 22 is connected to the other end of the bus bar 10 . This electric wire 22 is connected to, for example, a terminal of a battery.

The busbar 10 is covered with a case 30 except for the connecting portion 21 . The case 30 is composed of a first case 31 and a second case 32 .

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 wiring of an electrical junction box, and the other end is connected to, for example, a terminal of a battery.

FIG. 4 is a cross-sectional perspective view of a bus bar in a bus bar housing portion that is housed in a housing recess. FIG. 5 is a vertical cross-sectional view showing a state in which the accommodating portion of the bus bar is accommodated in the accommodating concave portion.

As shown in FIGS. 4 and 5 , 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 first case 31 has a bottom wall portion 33 and side wall portions 34 extending upward from both side edges of the bottom wall portion 33 . The second case 32 has an upper wall portion 35 and side wall portions 36 extending downward from both side edges of the upper wall portion 35 . The bus bar 10 is fitted in a concave portion surrounded by the bottom wall portion 33 and the side wall portion 34 of the first case 31 . The second case 32 is assembled to cover the first case 31 in which the bus bar 10 is fitted from above. As a result, the upper portion of the first case 31 to which the bus bar 10 is attached is covered with the upper wall portion 35 of the second case 32 , and both side wall portions of the second case 32 are positioned outside the side wall portions 34 of the first case 31 . 36 are arranged so as to overlap each other.

Further, the case 30 composed of the first case 31 and the second case 32 has a plurality of locking portions 40 . The locking portion 40 is composed of an engaging claw 41 formed in the side wall portion 34 of the first case 31 and an engaging hole 42 formed in the side wall portion 36 of the second case 32 . By assembling the second case 32 to the first case 31 attached to the bus bar 10 , the locking claws 41 enter the locking holes 42 to lock the locking portion 40 . As a result, the first case 31 and the second case 32 are locked together.

The case 30 has an end portion on the side of the connection portion 21 where the bus bar 10 is exposed as a housing portion 51 , and the housing portion 51 is housed in the housing recess 1 . The accommodation recess 1 is formed in a concave shape having a bottom surface portion 2 and side surface portions 3 rising from both edges of the bottom surface portion 2 . It is fitted in from the side and accommodated. With the accommodation portion 51 accommodated in the accommodation recess 1, a fastening bolt (not shown) is inserted into the hole 21a formed in the connection portion 21 of the busbar 10 and fastened to the mating wiring. As a result, the bus bar 10 is connected to the wiring on the other side. The electric wire 60 is connected to the mating wiring by fastening a fastening bolt (not shown) inserted into the hole 61a of the terminal fitting 61 to the mating wiring. Thereby, the wiring member 100 including the busbar 10 and the electric wire 60 is wired to the electrical junction box.

The housing portion 51 of the case 30 has an insertion guide portion 45 at the end portion on the connection portion 21 side. The insertion guide portion 45 has a pair of guide ribs 46 . Each guide rib 46 is formed on both side walls 34 of the first case 31 and protrudes laterally from the side walls 34 . The projection dimension of the guide rib 46 gradually decreases toward the front in the direction in which the housing portion 51 is inserted into the housing recess 1 . As a result, the edges of the guide ribs 46 are inclined toward the center in the width direction of the case 30 toward the front in the insertion direction of the housing portion 51 into the housing recess 1, and the insertion guide portions 45 are inclined toward the front in the insertion direction. tapered shape.

The insertion guide portion 45 having the pair of guide ribs 46 has a width dimension W2 that is larger than the width dimension W1 of the portion of the case 30 where the lock portion 40 is formed. Further, the pair of guide ribs 46 has rounded corners 46a on the rear side in the insertion direction of the accommodating portion 51 into the accommodating recess 1, which are formed in an arc shape.

Next, a case where the housing portion 51 of the case 30 assembled to the bus bar 10 is housed in the housing recess 1 will be described.
FIG. 6 is a vertical cross-sectional view for explaining the process of accommodating the accommodating portion of the bus bar into the accommodating recess. FIG. 7 is a vertical cross-sectional view for explaining the process of accommodating the accommodating portion of the bus bar into the accommodating recess.

As shown in FIG. 6, in order to accommodate the accommodation portion 51 in the accommodation recess 1, the accommodation portion 51 is brought close to the accommodation recess 1 from above. At this time, if the position of the accommodating portion 51 in the width direction is relatively biased with respect to the accommodating recess 1, the guide rib 46 of the insertion guide portion 45 contacts and slides on the upper edge portion of the side surface portion 3 of the accommodating recess 1. . Then, the accommodation portion 51 is guided toward the center of the accommodation recess 1 in the width direction by the guide ribs 46 of the insertion guide portion 45 having an inclined edge.

As shown in FIG. 7 , the accommodation portion 51 is arranged inside the accommodation recess 1 by the corner portion 46 a of the guide rib 46 of the insertion guide portion 45 passing over the upper edge portion of the side surface portion 3 of the accommodation recess 1 . be. As a result, the accommodation portion 51 is smoothly inserted into the accommodation recess 1 and accommodated in the accommodation recess 1 (see FIG. 5).

Here, a reference example will be described.
In describing the reference example, the same components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
FIG. 8 is a vertical cross-sectional view for explaining a process of accommodating the accommodating portion of the bus bar according to the reference example into the accommodating recess. FIG. 9 is a vertical cross-sectional view for explaining the process of accommodating the accommodating portion of the bus bar according to the reference example into the accommodating recess.

As shown in FIG. 8, in the reference example, a case 30A assembled to the bus bar 10 has a housing portion 51A that does not have an insertion guide portion 45. As shown in FIG.

In this case 30A, if the position of the accommodating portion 51 in the width direction relative to the accommodating recessed portion 1 is relatively biased, when the accommodating portion 51 is brought closer to the accommodating recessed portion 1 from above, the first case 31 hits the upper edge portion of the side surface portion 3 of the housing recess 1 (see FIG. 8). Then, the operation of accommodating the accommodating portion 51 into the accommodating recess 1 is delayed.

Further, if the position of the accommodating portion 51 is biased with respect to the accommodating recessed portion 1, even if the accommodating portion 51 is inserted into the accommodating recessed portion 1, as shown in FIG. There is a risk that the first case 31 and the second case 32 will come into contact with the locking portion 40 and the first case 31 and the second case 32 will be disengaged and separated, and the bus bar 10 will be separated from the case 30 .

In contrast, according to the wiring structure according to the present embodiment, when the case 30 assembled to the bus bar 10 is accommodated in the accommodation recess 1, the position in the width direction relative to the accommodation recess 1 is Even if it is biased, the guide rib 46 of the insertion guide portion 45 contacts and slides on the edge of the side surface portion 3 of the recessed accommodation portion 1 . Therefore, the case 30 is smoothly accommodated in the accommodation recess 1 by being guided toward the center in the width direction of the accommodation recess 1 by the guide ribs 46 of the insertion guide portion 45 . Therefore, the wiring workability of the bus bar 10 can be improved.

In addition, since the insertion guide portion 45 has a width dimension W2 that is larger than the portion of the case 30 where the lock portion 40 is provided, the lock portion of the edge portion of the accommodation recess portion 1 is removed during the accommodation process in the accommodation recess portion 1 . 40 can be suppressed. As a result, it is possible to prevent the engagement of the first case 31 and the second case 32 from being released due to interference of the housing recess 1 with the lock portion 40 , thereby allowing housing in the housing recess 1 .

Moreover, the guide rib 46 has an arcuate corner portion 46a on the rear side in the insertion direction of the case 30 into the housing recess 1 . Therefore, it is possible to prevent the corners 46a of the guide ribs 46 from being caught in the accommodation recess 1. As shown in FIG. As a result, the case 30 can be smoothly removed from the housing recess 1 even when the bus bar 10 is removed from the electrical connection box.

According to the wiring structure of the present embodiment, the bus bar 10 and the electric wire 60 passed through the ring-shaped ferrite 11 can be smoothly connected to the wiring of the electric connection box, thereby improving the wiring workability. can be done.

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.

For example, in the embodiment described above, the insertion guide portion 45 is formed at the end on the connecting portion 21 side, but may be formed at a location other than the end. Also, the insertion guide portions 45 may be formed at a plurality of locations along the longitudinal direction of the busbar 10 or may have a certain length along the longitudinal direction of the busbar 10 .

Here, the features of the arrangement structure according to the embodiment of the present invention described above are briefly summarized in [1] to [4] below and listed.
[1] A wiring structure in which a bus bar (10) covered with a case (30) is housed in a housing recess (1) of an electrical connection box and connected to the wiring of the electrical connection box for routing,
The case (30) is
a first case (31) mounted from one side of the bus bar (10);
a second case (32) mounted from the other side of the bus bar (10);
a locking part (40) that engages the first case (31) and the second case (32) with each other at both sides thereof;
an insertion guide portion (45) having a pair of guide ribs (46) that are provided on both sides of the first case (31) at the accommodation location to be accommodated in the accommodation recess (1) and protrude outward in the width direction; ,
with
The insertion guide portion (45) has a width dimension (W2) that is larger than the portion of the case (30) where the lock portion (40) is provided, and the guide rib (46) is aligned with the accommodation recess (1). ) slanted toward the center of the width direction of the case (30) toward the front in the direction of insertion of the case (30) into the case (30).

According to the wiring structure of the configuration [1] above, when the case assembled to the bus bar is accommodated in the accommodation recess, even if the position in the width direction is relatively biased with respect to the accommodation recess, the insertion guide The guide ribs of the portion slide in contact with the edge of the side portion of the accommodation recess. Therefore, the case is guided toward the widthwise center of the accommodation recess by the guide ribs of the insertion guide portion and is smoothly accommodated in the accommodation recess. Therefore, it is possible to improve the wiring workability of the bus bar.
In addition, since the insertion guide portion has a width dimension larger than that of the portion of the case where the lock portion is provided, it is possible to suppress the interference of the edge portion of the accommodation recess with the lock portion during the accommodation process in the accommodation recess. . As a result, it is possible to prevent the engagement of the first case and the second case from being released due to interference of the housing recess with the lock portion, and to accommodate the first case and the second case in the housing recess.

[2] The guide rib (46) is formed at the end of the first case (31) on the wiring side of the electric connection box,
The routing structure according to [1] above.

According to the wiring structure of the above [2], since the guide rib is formed at the end of the electric connection box on the wiring side, even when the case is housed in the housing recess from the end side of the case, the guide rib is not installed. are guided toward the center of the accommodation recess in the width direction and smoothly accommodated.

[3] The guide rib (46) has an arcuate corner (46a) on the rear side in the direction in which the case (30) is inserted into the housing recess (1).
The routing structure according to [1] or [2] above.

According to the wiring structure of the above [3], the corner of the guide rib on the rear side in the direction of insertion of the case into the housing recess is formed in an arc shape, so that the corner of the guide rib does not get caught in the housing recess. can be suppressed. As a result, the case can be smoothly removed from the accommodation recess even when the bus bar is removed from the electrical connection box.

[4] The bus bar (10) is passed through an annular ferrite (11) together with an electric wire (60), and is connected together with the electric wire (60) to the wiring of an electrical junction box.
The routing structure according to any one of [1] to [3] above.

According to the wiring structure of the configuration [4] above, the busbar and the electric wire passed through the ring-shaped ferrite can be smoothly connected to the wiring of the electrical connection box, and the wiring workability can be improved. .

Reference Signs List 1 accommodation recess 2 bottom surface 3 side surface 10 busbar 11 ferrite 11a, 11b split ferrite 21 connecting portion 21a hole 22 electric wire 30 case 31 first case 32 second case 33 bottom wall 34 side wall 35 upper wall 36 side wall 40 lock portion 41 locking claw 42 locking hole 45 insertion guide portion 46 guide rib 46a corner portion 51, 51A accommodating portion 60 electric wire 61 terminal fitting 61a hole portion 100 wiring member W1, W2 width dimension

Claims (4)

A wiring structure in which a bus bar covered with a case is housed in a housing recess of an electric connection box and connected to the wiring of the electric connection box for wiring,
Said case is
a first case attached from one side of the bus bar;
a second case attached from the other side of the busbar;
a locking portion that engages both sides of the first case and the second case;
an insertion guide portion having a pair of guide ribs that are provided on both sides of the first case at the accommodation location accommodated in the accommodation recess and project outward in the width direction;
with
The insertion guide portion has a width dimension larger than that of a portion of the case where the lock portion is provided, and the guide rib extends in the width direction of the case toward the front in the insertion direction of the case into the accommodation recess. slanted toward the center,
routing structure. The insertion guide part is formed at the end of the first case on the wiring side of the electrical junction box,
The wiring structure according to claim 1. The guide rib has an arcuate corner on the rear side in the direction in which the case is inserted into the accommodation recess.
The routing structure according to claim 1 or 2. The busbar is passed through an annular ferrite together with an electric wire, and is connected together with the electric wire to wiring of an electric junction box.
The routing structure according to any one of claims 1 to 3.

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