JP7152251B2 - Electrical wiring block assembly, electrical connection box and wire harness - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electric wiring block assembly, an electric connection box and a wire harness.

2. Description of the Related Art Conventionally, an electrical connection box including a housing and electronic components housed in the housing is known (Patent Documents 1 to 5 below). For example, in an electric connection box, an electric wiring block containing electronic components is housed in the housing, so that the electronic components are housed in the housing. In this electrical connection box, a plurality of electrical wiring blocks may be accommodated in one housing, and by joining the respective electrical wiring blocks, the electronic components of the connected electrical wiring blocks are electrically connected. Let For example, each electrical wiring block is provided with a plate-shaped bus bar electrically connected to the electronic component housed therein. In this case, the electronic components of the respective electric wiring blocks are electrically connected by connecting the bus bars of the electric wiring blocks that are connected to each other with the connecting member. As the connection member, for example, a form such as a clip for sandwiching the inserted bus bar can be considered. For example, Patent Document 6 below discloses a relay bus bar having a leaf spring-like clip provided for each bus bar to be connected. The relay busbars electrically connect the busbars to be connected to each other by inserting the busbars to be connected into the respective clips.

Japanese Patent Application Laid-Open No. 2004-201448 JP-A-9-308047 JP 2007-129790 A JP 2004-166322 A JP-A-2002-315156 JP 2011-172393 A

By the way, in a joined body in which a plurality of electric wiring blocks are joined (an electric wiring block joined body), the electric connecting portions of the busbars housed in the respective electric wiring blocks are sandwiched by clip-shaped connecting members, and the respective electric wiring blocks are connected to each other. It is also conceivable to electrically connect the busbars by overlapping one wall surfaces of the connecting portion. In this case, the connection member is formed by applying a pressing force to the other wall surface of each electrical connection portion along the direction in which the one wall surfaces are superposed (the direction in which the respective electrical connection portions are sandwiched). Bring the walls into surface contact. Along with this, in this electric wiring block assembly, the quality of electric conduction between the busbars becomes favorable. However, each of the electrical connections is subject to dimensional tolerances of the bus bar itself, dimensional tolerances of the electrical wiring block, assembly tolerances between the electrical wiring block and the bus bar, and assembly tolerances between the two electrical wiring blocks to be joined. Due to tolerances and the like, the position relative to the electrical wiring block may be tilted from the intended position. In the electric wiring block assembly in this case, the relative positions of the respective electric connection portions with respect to the connection members are also tilted with respect to the desired positions. Therefore, in this electric wiring block assembly, a deviation occurs between the direction in which the pressing force is applied from the connection member to the other wall surface and the direction in which the one wall surfaces are overlapped, resulting in variations in the quality of electric conduction between the busbars. there is a possibility.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electric wiring block assembly, an electric connection box, and a wire harness capable of stabilizing the quality of electric conduction between busbars.

In order to achieve the above object, an electric wiring block joint according to the present invention comprises: a conductive bus bar; a plurality of electric wiring blocks for electrically connecting an electronic component and the bus bar inside; a connection member for electrically connecting the electrical connection portions of the busbars housed in the two target electrical wiring blocks, wherein the two electrical wiring blocks to be joined are At least one of the electrical connection portions and the connection member forms a storage chamber in which each of the electrical connection portions and the connection member is stored, the storage chamber has a holding structure for holding the connection member in the chamber, and the connection members each an accommodation space in which the electrical connection portions of are accommodated by overlapping one wall surface with each other; an insertion port into which each of the electrical connection portions can be inserted into the accommodation space; first and second opposing wall bodies that sandwich the electrical connection portion between a pair of pressing portions while applying a pressing force to each other wall surface; a connecting wall body for connecting the wall bodies, wherein the first opposing wall body includes a first pressing portion as one of the pressing portions, and a first pressing portion that presses the first pressing portion against the connecting wall body; a plurality of first pressing walls provided with a first movable portion capable of relatively moving in the direction of pressure action and in the opposite direction; and the second opposing wall serving as the other pressing portion. and a second movable part capable of relatively moving the second pressing part with respect to the connecting wall in the direction in which the pressing force acts and in the opposite direction thereof. A pressing wall is provided for each of the first pressing walls.

Here, in the connection member, the combination of the first pressing wall body and the second pressing wall body that form a pair is used to determine whether or not each of the electrical connection portions is tilted in the housing chamber. It is desirable to arrange them side by side along the reference direction at .

Moreover, it is preferable that the connecting member has three or more combinations of the first pressing wall and the second pressing wall that form a pair.

In order to achieve the above object, an electrical connection box according to the present invention includes an electronic component, a conductive bus bar, a plurality of electrical wiring blocks for electrically connecting the electronic component and the bus bar inside, a connection member for electrically connecting the electrical connection portions of the busbars housed in the two electrical wiring blocks to be joined together; a housing for housing the plurality of the electrical wiring blocks; wherein at least one of the two electrical wiring blocks to be joined forms a storage chamber in which the electrical connection portion and the connection member are accommodated, and the storage chamber is an indoor A holding structure for holding the connection member is provided, and the connection member includes an accommodation space in which each of the electrical connection portions is accommodated with one wall surfaces thereof overlapping each other, and an accommodation space in which each of the electrical connection portions is placed in the accommodation space. and first and second opposing wall bodies for sandwiching the respective electrical connection portions accommodated in the accommodation space between the pair of pressing portions while applying a pressing force to the other wall surface of each of the electrical connection portions. and a connecting wall body that connects the first and second opposing wall bodies on the side opposite to the insertion port, wherein the first opposing wall body serves as one of the pressing portions as a first pressing portion. and a first movable part capable of relatively moving the first pressing part with respect to the connecting wall in the direction in which the pressing force acts and in the opposite direction thereof. A plurality of second opposing walls are provided, and the second pressing portion as the other pressing portion and the second pressing portion are opposed to the connecting wall in the direction in which the pressing force acts and in the opposite direction. A second pressing wall provided with a movable second movable portion is provided for each of the first pressing walls.

In order to achieve the above object, a wire harness according to the present invention includes an electronic component, a conductive bus bar, an electric wire, and a plurality of wires for electrically connecting the electronic component, the bus bar and the electric wire inside. An electrical wiring block, a connection member for electrically connecting the electrical connection portions of the busbars housed in the two electrical wiring blocks to be joined together, and a plurality of the electrical wiring blocks. and a housing from which the electric wire is led out, wherein at least one of the two electric wiring blocks to be joined accommodates the electric connecting portion and the connecting member. An accommodation chamber is formed, and the accommodation chamber has a holding structure for holding the connection member inside the chamber, and the connection members are accommodated in such a manner that the respective electrical connection portions are overlapped with each other on one wall surface. a space, an insertion opening into which each of the electrical connection portions can be inserted into the accommodation space, and a pair of electrical connection portions accommodated in the accommodation space while applying a pressing force to the other wall surface of each of the electrical connection portions. The first opposing wall has first and second opposing wall bodies that are sandwiched by the pressing portion, and a connecting wall body that connects the first and second opposing wall bodies on the side opposite to the insertion port, wherein the first opposing wall The body includes a first pressing portion as one of the pressing portions, and a first movable body capable of relatively moving the first pressing portion with respect to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. The second opposing wall has a plurality of first pressing walls provided with a portion and a second pressing portion as the other pressing portion, and the second pressing portion to the connecting wall. Each of the first pressing walls has a second pressing wall provided with a second movable portion capable of relatively moving in the acting direction of the pressing force and in the opposite direction.

Since the connection member has a plurality of combinations of such pairs of the first pressing wall and the second pressing wall, if the respective electrical connection portions are not tilted inside the housing chamber, the respective electrical connection portions are not tilted. The first pressing wall and the second pressing wall, which are paired with each other, can evenly apply pressing force to the other wall surface of the connecting portion. Therefore, this connecting member can evenly bring the one wall surfaces of the electrical connection portions into surface contact with each other and maintain the surface contact state. On the other hand, since this connection member has a plurality of combinations of the first pressing wall and the second pressing wall that form a pair, even if the respective electrical connection portions are tilted inside the storage chamber, the respective electrical connection portions are not connected. A pressing force can be uniformly applied to the other wall surface of the electrical connection portion while the paired first pressing wall and second pressing wall follow each other. Therefore, even if the respective electrical connection portions are tilted inside the storage chamber, the connection member can evenly bring one wall surfaces of the respective electrical connection portions into surface contact with each other and maintain the surface contact state. can be done. As described above, the electric wiring block assembly according to the present invention includes a plurality of connection members that are combined with the first pressing wall and the second pressing wall that form a pair, so that the storage chambers for the respective electrical connection portions are provided. Regardless of the presence or absence of positional deviation in the room, one wall surface of each electrical connection portion is maintained in a state of even surface contact. Therefore, this electric wiring block assembly can stabilize the quality of electric conduction between the busbars. Furthermore, since the electrical connection box and the wire harness according to the present invention are provided with the electrical wiring block assembly, the effects of this electrical wiring block assembly can be similarly obtained.

FIG. 1 is a perspective view showing an electric wiring block assembly, an electric connection box, and a wire harness according to the embodiment. FIG. 2 is an exploded perspective view of the electrical wiring block assembly of the embodiment. FIG. 3 is an exploded perspective view showing two busbars, a connection member, and a storage chamber extracted before assembly. FIG. 4 is an exploded perspective view of the first electric wiring block side. FIG. 5 is an exploded perspective view of the second electric wiring block side. FIG. 6 is an exploded perspective view showing an electrical connection portion, a connection member, and a storage chamber extracted from two busbars arranged facing each other before assembly. FIG. 7 is an exploded perspective view, seen from another angle, showing the electrical connection portions, connection members, and storage chambers of the two busbars arranged facing each other before assembly. 8 is a cross-sectional view taken along the line XX of FIG. 6. FIG. FIG. 9 is a perspective view showing an extracted electrical connection portion, a connection member, and a storage chamber of two busbars after assembly. FIG. 10 is a top view showing an extracted electrical connection portion, a connection member, and a storage chamber of two busbars after assembly. 11 is a cross-sectional view taken along the line XX of FIG. 10. FIG. FIG. 12 is a bottom view showing the electrical connection portions, the connection members, and the storage chambers of the two busbars after assembly when the electrical connection portions are not tilted. FIG. 13 is a bottom view of the electrical connection portion, the connection member, and the accommodation chamber of the two busbars after the assembly, when the electrical connection portion is tilted.

EMBODIMENT OF THE INVENTION Below, embodiment of the electrical-wiring-block joined body which concerns on this invention, an electrical connection box, and a wire harness is described in detail based on drawing. In addition, this invention is not limited by this embodiment.

[Embodiment]
One embodiment of an electric wiring block assembly, an electric junction box and a wire harness according to the present invention will be described with reference to FIGS. 1 to 13. FIG.

Reference numeral 1 in FIGS. 1 and 2 indicates an electric wiring block assembly of this embodiment. Reference numerals JB and WH in FIG. 1 respectively denote the electrical connection box of the present embodiment including the electrical wiring block assembly 1 and the wire harness of the present embodiment including the electrical connection box JB. show.

The electric wiring block assembly 1 is a structure in which a plurality of electric wiring blocks (a first electric wiring block 10 and a second electric wiring block 20, which will be described later) containing electronic parts EP are joined together (FIGS. 1 and 2). ). The electric connection box JB is a housing JBa containing a plurality of electric wiring blocks together with electronic parts EP (FIG. 1). At least one electric wiring block assembly 1 is accommodated in the housing JBa. Therefore, in the electrical connection box JB, an electrical wiring block assembly or an electrical wiring block different from the electrical wiring block assembly 1 may be accommodated in the housing JBa. The electric wiring block assembly 1 is held in the casing JBa via a known lock mechanism (not shown) or the like. The wire harness WH is an electric wire (power supply line, signal line, etc.) We that is electrically connected to the electronic parts EP of the electric connection box JB and is pulled out from the inside of the casing JBa. Yes (Fig. 1). Note that the housing JBa in the figure is a conceptual diagram showing only the outer wall of the frame, and the two openings of this frame are covered with respective covers.

The electric junction box JB is installed in an engine compartment of a vehicle (not shown), for example, as a wire harness WH together with electric wires We. In the electrical connection box JB, a connection object (not shown) mounted on the vehicle is electrically connected to the electronic component EP via electric wires We. For example, in this electric connection box JB, at least two electric wires We are electrically connected to the electronic component EP, and at least two connection objects are electrically connected via the electronic component EP. Electronic parts EP refer to, for example, circuit protection parts such as relays and fuses, connectors, and terminal fittings. In the present embodiment, electronic devices such as circuit boards and electronic control units (so-called ECUs) are also considered as forms of the electronic components EP housed in the housing JBa. Also, the connection target refers to a power source such as a secondary battery, a load such as an electrical device (such as an actuator), a sensor, and the like.

The electric wiring block assembly 1 will be specifically described below.

As described above, the electric wiring block assembly 1 is obtained by joining a plurality of electric wiring blocks. The electrical wiring block accommodates not only the electronic component EP but also the conductive bus bar, and electrically connects the electronic component EP and the bus bar inside. In this electric wiring block assembly 1, two electric wiring blocks to be joined together are joined together, and the busbars housed in the respective electric wiring blocks are joined together, thereby electrically connecting the busbars. connect to The electric wiring block assembly 1 includes connection members for electrically connecting the electric connection portions of the respective busbars, as will be described in detail later.

Here, an electric wiring block assembly 1 including two electric wiring blocks (a first electric wiring block 10 and a second electric wiring block 20) is illustrated (FIGS. 1 and 2). The first electrical wiring block 10 (FIGS. 1 to 4) and the second electrical wiring block 20 (FIGS. 1, 2 and 5) are each molded from an insulating material such as synthetic resin.

The first electric wiring block 10 accommodates a relay EP1 as an electronic component EP and also accommodates a busbar 30 (FIG. 4). The first electrical wiring block 10 is formed with a first accommodation chamber 11 that accommodates and holds the relay EP1 and a second accommodation chamber 12 that accommodates and holds the bus bar 30 . The first electric wiring block 10 accommodates six relays EP<b>1 and electrically connects the respective relays EP<b>1 via one bus bar 30 . Therefore, in this example, six first storage chambers 11 are arranged in a grid pattern, and each first storage chamber 11 accommodates one relay EP1 through the opening 11a. Also, the terminal connection portions 31 of the busbars 30 accommodated in the second accommodation chambers 12 are inserted into the respective first accommodation chambers 11 . Therefore, the relay EP<b>1 is physically and electrically connected to the bus bar 30 via the terminal connection portion 31 when accommodated in the first accommodation chamber 11 .

Here, the bus bar 30 is formed of a conductive material such as metal. The illustrated bus bar 30 is a plate-shaped one that is press-formed using a metal plate such as a copper plate as a base material (FIGS. 3 and 4). This busbar 30 has six terminal connection portions 31 for each relay EP1. The illustrated terminal connection portion 31 is formed in a so-called male tab shape, and is inserted and fitted into one female terminal connection portion (not shown) of the relay EP1. This bus bar 30 has two sets of combinations of three terminal connection portions 31 that are arranged on the same plane at substantially equal intervals, and the respective combinations are arranged to face each other. The bus bar 30 includes a rectangular first connecting portion 32 that connects the three terminal connection portions 31 of one combination on the same plane, and a rectangular first connection portion 32 that connects the three terminal connection portions 31 of the other combination on the same plane. and a second connecting portion 33 . In this busbar 30, the respective terminal connection portions 31 are projected and extended in the same direction on the same plane from the first connection portion 32 and the second connection portion 33, and the extension direction thereof is the same as that of the relay EP1. is the insertion/extraction direction with the terminal connection part. Further, the bus bar 30 has a rectangular third connecting portion 34 that connects the first connecting portion 32 and the second connecting portion 33 on the side opposite to the terminal connecting portion 31 side. In this bus bar 30 , a main portion is formed by six terminal connection portions 31 , a first connection portion 32 , a second connection portion 33 and a third connection portion 34 .

In the first electric wiring block 10, the end of the electric wire We is electrically connected to the other female terminal connecting portion (not shown) of the relay EP1. The electric wire We is physically and electrically connected to the relay EP1 via, for example, a male tab-type terminal fitting attached to its end. This electric wire We is provided for each relay EP1.

The second electric wiring block 20 accommodates a circuit protection component EP2 as an electronic component EP and also accommodates a busbar 40 (FIG. 5). The second electrical wiring block 20 is formed with a first accommodation chamber 21 that accommodates and holds the circuit protection component EP2 and a second accommodation chamber 22 that accommodates and holds the bus bar 40 . The second electrical wiring block 20 accommodates 10 circuit protection components EP2 and electrically connects the respective circuit protection components EP2 via one bus bar 40 . Therefore, in this illustration, ten first storage chambers 21 are arranged in a grid pattern, and one circuit protection component EP2 is stored in each first storage chamber 21 through the opening 21a. Also, the terminal connection portions 41 of the busbars 40 accommodated in the second accommodation chambers 22 are inserted into the respective first accommodation chambers 21 . Therefore, the circuit protection component EP<b>2 is physically and electrically connected to the bus bar 40 via the terminal connection portion 41 when accommodated in the first accommodation chamber 21 .

Here, the bus bar 40 is molded from a conductive material such as metal. The illustrated bus bar 40 is a plate-shaped one that is press-molded from a metal plate such as a copper plate as a base material, like the bus bar 30 of the first electrical wiring block 10 (FIGS. 3 and 5). This bus bar 40 has ten terminal connection portions 41 for each circuit protection component EP2. The terminal connection portion 41 of this example is formed in a so-called tuning fork terminal shape, and by inserting one male tab-type terminal connection portion EP2a (FIG. 5) of the circuit protection component EP2, the circuit protection component EP2 sandwiches the terminal connection part EP2a. This busbar 40 has two sets of combinations of five terminal connection portions 41 that are arranged on the same plane at substantially equal intervals, and the respective combinations are arranged to face each other. The bus bar 40 includes a rectangular first connecting portion 42 that connects the five terminal connection portions 41 of one combination on the same plane, and a rectangular first connection portion 42 that connects the five terminal connection portions 41 of the other combination on the same plane. and a second connecting portion 43 . In this bus bar 40, the respective terminal connection portions 41 protrude and extend in the same direction on the same plane from the first connecting portion 42 and the second connecting portion 43, and the extending direction is the circuit protection circuit. It is the insertion/extraction direction with respect to the terminal connection portion EP2a of the component EP2. Further, the bus bar 40 has a rectangular third connecting portion 44 that connects the first connecting portion 42 and the second connecting portion 43 on the side opposite to the terminal connecting portion 41 side. In this bus bar 40 , a main portion is formed by ten terminal connection portions 41 , a first connection portion 42 , a second connection portion 43 and a third connection portion 44 .

In the second electric wiring block 20, the end of the electric wire We is electrically connected to the other male tab terminal connection portion EP2b (FIG. 5) of the circuit protection component EP2. The electric wire We is physically and electrically connected to the circuit protection component EP2 via, for example, a tuning fork terminal type terminal fitting attached to the end. This electric wire We is provided for each circuit protection component EP2.

The first electric wiring block 10 and the second electric wiring block 20 shown here are connected to the opening 11a of the first accommodation chamber 11 (insertion port for the relay EP1) and the opening 21a of the first accommodation chamber 21 (circuit protection component EP2). (insertion opening) and the opening in the same direction. As described above, in this electric wiring block assembly 1, the first electric wiring block 10 and the second electric wiring block 20 are joined together, and the respective bus bars 30 and 40 are joined to each other, whereby the respective bus bars are connected. 30 and 40 are electrically connected. Here, the two busbars (the respective busbars 30 and 40 in this example) that are electrically connected using a connection member 50 to be described later have the electrical connection portions 35 and 45 sandwiched in contact by the connection member 50. each (FIGS. 3 and 6 to 11). Here, the respective busbars 30, 40 are electrically connected by coupling the respective electrical connection portions 35, 45 thereof.

Each of the busbars 30 and 40 may be housed in advance in two electrical wiring blocks to be joined (the first electrical wiring block 10 and the second electrical wiring block 20 in this example), and the electrical wiring after assembly may be performed. It may be housed in a wiring block. Here, the respective busbars 30 and 40 are housed in advance in the first electric wiring block 10 and the second electric wiring block 20, respectively, and the first electric wiring block 10 and the second electric wiring block 20 are assembled. , so that their respective electrical connections 35, 45 are arranged next to each other. The connection member 50 is assembled to each of the electrical connections 35, 45 arranged adjacent to it.

In the bus bar 30, an electrical connection portion 35 is provided in a state of protruding from the main portion (the six terminal connection portions 31, the first connection portion 32, the second connection portion 33, and the third connection portion 34) (FIGS. 3 and 3). 4). In this busbar 30 , an electrical connection portion 35 protrudes from the end (one side) of the first connecting portion 32 . Here, in the first connecting portion 32, an electrical connection portion 35 is provided at one end portion in the arrangement direction of the three terminal connection portions 31. As shown in FIG. In addition, in the bus bar 40, an electrical connection portion 45 is provided in a state of protruding from the main portion (the ten terminal connection portions 41, the first connection portion 42, the second connection portion 43, and the third connection portion 44) (Fig. 3 and FIG. 5). In this busbar 40 , an electrical connection portion 45 protrudes from the end (one side) of the first connecting portion 42 . Here, an electrical connection portion 45 is provided at one end portion in the arrangement direction of the five terminal connection portions 41 in the first connection portion 42 .

The illustrated electrical connection portion 35 is formed in a rectangular flat plate shape on the same plane as the first connection portion 32 . The electrical connection portion 35 has one wall surface (flat surface) 35a that contacts the mating electrical connection portion 45, and the other wall surface 35a on which a pressing force from the connection member 50 acts when the electrical connection portion 35 is sandwiched between the connection member 50 and the connection member 50. and a wall surface (flat surface) 35b (FIGS. 8, 10 and 11). Further, the illustrated electrical connection portion 45 is formed in a rectangular flat plate shape on the same plane as the first connection portion 42 . The electrical connection portion 45 has one wall surface (flat surface) 45a that makes contact with the mating electrical connection portion 35, and the other wall surface (flat surface) 45a that is pressed by the connection member 50 when sandwiched between the connection member 50 and the other wall surface (flat surface) 45a. and a wall surface (flat surface) 45b (FIGS. 8, 10 and 11).

In each bus bar 30, 40, by assembling the first electric wiring block 10 and the second electric wiring block 20, one wall surfaces 35a, 45a of the respective electric connection portions 35, 45 are arranged adjacent to each other to face each other. be done. In the respective busbars 30, 40, the respective electrical connection portions 35, 45 are sandwiched by the connecting member 50 from the side of the wall surfaces 35b, 45b on the other side, so that the contact state between the wall surfaces 35a, 45a on one side is maintained. to maintain electrical connection with each other.

This electric wiring block assembly 1 includes a connection member 50 for electrically connecting the respective electric connection portions 35 and 45 (FIGS. 2, 3 and 6 to 11). The connecting member 50 is a member for connecting the respective electrical connection portions 35 and 45 and maintaining the connected state. The connection member 50 electrically connects the electrical connections 35 and 45 by holding them together. For example, this connection member 50 is formed of a conductive material such as metal. The connecting member 50 illustrated in this example is a plate-like member press-formed using a metal plate such as a copper plate as a base material.

The connection member 50 is configured such that the wall surfaces 35a and 45a on one side are overlapped with each other by inserting the electrical connection portions 35 and 45 having the wall surfaces 35a and 45a on one side facing each other. The respective electrical connections 35, 45 are coupled and the respective electrical connections 35, 45 are held in the coupled state.

Therefore, the connection member 50 has a storage space 51 in which the respective electrical connection portions 35 and 45 are accommodated with the wall surfaces 35a and 45a on one side overlapping each other, and the electrical connection portions 35 and 45 in the storage space 51. a pluggable receptacle 52 (FIGS. 2, 3, 6-8 and 11). The connection member 50 also has first and second opposing wall bodies 53 and 54 that sandwich the electrical connection portions 35 and 45 housed in the housing space 51 (FIGS. 2, 3, and 4). 6 to 8, 10 and 11). The first and second opposing wall bodies 53 and 54 are arranged to face each other with a space therebetween in the sandwiching direction with respect to the respective electrical connection parts 35 and 45 , one of which is the other of the electrical connection parts 35 . It has a pressing portion that applies a pressing force to the wall surface 35 b , and the other of them has a pressing portion that applies a pressing force to the other wall surface 45 b of the electrical connection portion 45 . The first and second opposing wall bodies 53 and 54 press the electrical connection parts 35 and 45 accommodated in the accommodation space 51 against the other wall surfaces 35b and 45b, respectively, and press the pair of pressing parts. sandwiched between Further, the connection member 50 has a connection wall 55 that connects the pair of opposing walls 53 on the side opposite to the insertion port 52 (FIGS. 2, 3 and 6 to 11). In this connecting member 50 , a space surrounded by the first and second opposing wall bodies 53 and 54 and the connecting wall body 55 serves as a housing space 51 . In this connection member 50 , an insertion port 52 is provided between the ends of the first and second opposing wall bodies 53 and 54 on the side opposite to the connecting wall body 55 side.

Here, the two electrical wiring blocks to be joined (the first electrical wiring block 10 and the second electrical wiring block 20 in this example) are connected by at least one of the electrical connection portions 35 and 45 and the connection member. 50 are accommodated therein. When the first electrical wiring block 10 and the second electrical wiring block 20 are assembled, the housing chamber is formed by combining the walls or wall surfaces of the first electrical wiring block 10 and the second electrical wiring block 20 with each other. It may be formed in advance on one of the first electric wiring block 10 and the second electric wiring block 20 . Here, a third storage chamber 13 as the storage chamber is provided in the first electric wiring block 10 (FIGS. 1 to 4).

The third storage chamber 13 is formed in a tubular shape with both ends opened. The electrical connection portions 35 and 45 and the connection member 50 are inserted into the third accommodation chamber 13 along the cylinder axis direction. The illustrated third housing chamber 13 is formed in a rectangular tubular shape, and includes a first insertion opening 13a (FIGS. 3, 6 to 9 and 11) for inserting the electrical connection portions 35 and 45, respectively. and a second insertion opening 13b (FIGS. 1 to 4 and FIGS. 6 to 11) for inserting the connecting member 50. As shown in FIG. In this third storage chamber 13 , the second insertion opening 13 b opens in the same direction as the opening 11 a of the first storage chamber 11 .

In the first electrical wiring block 10, when the main portion of the busbar 30 is accommodated in the second accommodation chamber 12, the electrical connection portion 35 of the busbar 30 is accommodated in the third accommodation chamber 13 through the first insertion port 13a. be done. In addition, when the first electrical wiring block 10 and the second electrical wiring block 20 are joined together, the electrical connection portion 45 of the bus bar 40 is accommodated in the third accommodation chamber 13 through the first insertion opening 13a. Therefore, in the second electrical wiring block 20 , when the main portion of the busbar 40 is accommodated in the second accommodation chamber 22 , the electrical connection portion 45 of the busbar 40 projects outward.

The inner wall surface 13c of the third storage chamber 13 has a first opposing wall surface 13c- ₁ and a second opposing wall surface 13c- ₂ that are spaced apart from each other (FIG. 8). The other wall surface 45b of the electrical connection portion 45 accommodated in the third accommodation chamber 13 is arranged to face the _first opposing wall surface 13c1 with a gap therebetween. The other wall surface 35b of the electrical connection portion 35 accommodated in the third accommodation chamber 13 is arranged to face the _second opposing wall surface 13c2 with a gap therebetween. In addition, the inner wall surface 13c extends in a direction perpendicular to the direction in which the first and second opposing wall surfaces 13c ₁ and 13c ₂ face each other and the direction in which the connection member 50 is inserted from the second insertion port 13b (hereinafter referred to as the “connection member 50 It has third and fourth opposing wall surfaces 13c ₃ and 13c ₄ that are spaced apart from each other in the width direction of the wall (FIG. 8).

The connection member 50 is inserted into the third housing chamber 13 through the second insertion port 13b while the electrical connection portions 35 and 45 are housed therein. By inserting the connecting member 50 into the third housing chamber 13 , the electrical connecting portions 35 and 45 are inserted through the insertion port 52 . In this connection member 50, as the insertion and insertion into the third housing chamber 13 progresses, the electrical connection portions 35 and 45 move toward the connecting wall body 55 on the side opposite to the insertion port 52 and the housing space 51. move in the In the connecting member 50, the electrical connection portions 35 and 45 are moved into the accommodation space 51 to predetermined positions, thereby completing the accommodation of the electrical connection portions 35 and 45 in the accommodation space 51. As shown in FIG. The first and second opposing wall bodies 53 and 54 press the respective electrical connection portions 35 and 45 housed in the housing space 51 against the respective other wall surfaces 35b and 45b as described above. It is sandwiched between a pair of pressing parts while being acted on.

Further, the connection member 50 completes its accommodation in the third accommodation chamber 13 by completing the accommodation of the electrical connection portions 35 and 45 in the accommodation space 51 . In the connecting member 50, the first opposing wall 53 is arranged to face the _first opposing wall 13c1 with a gap in the interior of the third accommodation chamber 13, and the second opposing wall 54 is arranged to face the second opposing wall 13c1. It is arranged to face the facing wall surface _13c2 with a gap therebetween (FIGS. 10 and 11). In addition, in the interior of the third housing chamber 13, one end in the width direction of the connecting member 50 is arranged to face the _third opposing wall surface 13c3 with a gap, and the other end in the width direction is arranged to face the fourth opposing wall surface 13c3. _13c4 are spaced and opposed (FIGS. 10 and 11).

Here, the third accommodation chamber 13 has a holding structure 60 that holds the connection member 50 inside the chamber (FIGS. 3 and 6 to 11). The illustrated holding structure 60 holds the connection member 50 inside the third storage chamber 13 by sandwiching the first and second opposing walls 53 and 54 . In addition, the illustrated holding structure 60 functions as an insertion guide structure that guides the connecting member 50 inserted from the second insertion port 13b and inserts the respective electrical connection portions 35 and 45 from the insertion port 52. I also have

For example, the holding structure 60 includes a first holding portion 61 and a second holding portion 62 provided on the inner wall surface 13c of the third storage chamber 13 (FIGS. 3 and 6 to 11). Here, the first holding portion 61 is provided on the first opposing wall surface 13c- ₁ , and the second holding portion 62 is provided on the second opposing wall surface 13c- ₂ . The first holding portion 61 protrudes from the first opposing wall surface 13c- ₁ toward the second opposing wall surface 13c- ₂ (FIGS. 8, 10 and 11). The illustrated first holding portion 61 extends along the insertion direction of the connection member 50 from the second insertion opening 13b. On the other hand, the second holding portion 62 protrudes from the _second opposing wall surface 13c2 toward the _first opposing wall surface 13c1 (FIGS. 8, 10 and 11). The illustrated second holding portion 62 extends along the insertion direction of the connection member 50 from the second insertion opening 13b.

In this exemplary holding structure 60 , a first holding portion 61 and a second holding portion 62 are arranged to face each other in their projecting directions. The connecting member 50 in the room is sandwiched from the outer wall surface side of each of the first and second opposing wall bodies 53 and 54 . The pair of the first holding portion 61 and the second holding portion 62 has a spacing in the direction of their facing arrangement that allows the connection member 50 to be inserted between the first holding portion 61 and the second holding portion 62. Within the range, it is formed so as to be narrower than the space between the outer wall surface side of the first opposing wall body 53 and the outer wall surface side of the second opposing wall body 54 .

The illustrated holding structure 60 includes two pairs of combinations of the first holding portion 61 and the second holding portion 62 . Here, the combination of the first holding portion 61 and the second holding portion 62 on one side and the combination of the first holding portion 61 and the second holding portion 62 on the other side are arranged at intervals in the width direction of the connecting member 50 . ing. The holding structure 60 guides the connection member 50 inserted through the second insertion port 13b by a pair of first holding portion 61 and second holding portion 62, and guides the connection member 50 from the insertion port 52 to each electrical connection portion. 35, 45 can be plugged in and inserted. The holding structure 60 can hold the connection member 50 that has been completely accommodated in the third accommodation chamber 13 by the pair of the first holding portion 61 and the second holding portion 62 .

By the way, the first and second electric wiring blocks 10 and 20 and the busbars 30 and 40 are each formed with part variations within their own tolerances. Also, between the first electrical wiring block 10 and the bus bar 30, assembly variations occur within the range of assembly tolerance. Similarly, between the second electrical wiring block 20 and the bus bar 40, assembly variations occur within the range of assembly tolerance. In addition, in the electric wiring block assembly 1, assembly variations also occur between the first electric wiring block 10 and the second electric wiring block 20 within the range of assembly tolerance. In particular, in this electric wiring block assembly 1, there are cases where a wide range of tolerance is adopted in order to facilitate assembly. Therefore, there is a possibility that the electrical connection portions 35 and 45 may be tilted relative to the third housing chamber 13 relative to the desired position due to variations in parts and assembly. On the other hand, the connection member 50 assembled to each of the electrical connection portions 35 and 45 is held by the holding structure 60 inside the third housing chamber 13, so that the position within the chamber is within the range of tolerance. It is fixed in the position of the period. In other words, in the electric wiring block assembly 1 , there is a possibility that the electrical connection portions 35 and 45 are more displaced than the connection member 50 in the third housing chamber 13 . Such a difference in the amount of deviation may cause a deviation in the magnitude and point of application of the pressing force applied from the connecting member 50 to the other wall surfaces 35b and 45b, and in the direction in which the pressing force is applied.

Therefore, the connection member 50 of the present embodiment is evenly pressed against the other wall surfaces 35b and 45b while following the respective electrical connection portions 35 and 45 that are tilted inside the third housing chamber 13. The wall surfaces 35a and 45a on one side are formed as follows by applying pressure so that they are brought into uniform surface contact with each other.

The first opposing wall 53 of the present embodiment includes a first pressing portion 53a as one pressing portion, and a pressing force of the first pressing portion 53a against the connecting wall 55 (the other wall surface of the electrical connection portion 35). A plurality of first pressing walls 53A provided with a first movable portion 53b capable of relatively moving in the acting direction of the pressing force acting on 35b and in the opposite direction (FIGS. 2 and 4). 3, FIGS. 6 and 7). The second opposing wall 54 of the present embodiment includes a second pressing portion 54a as the other pressing portion, and a pressing force of the second pressing portion 54a against the connecting wall 55 (the other side of the electrical connection portion 45). A second pressing wall 54A provided with a second movable portion 54b capable of relatively moving in the acting direction of the pressing force acting on the wall surface 45b and in the opposite direction is provided for each first pressing wall 53A. (FIGS. 2, 3, 6 and 7). The paired first pressing wall 53A and second pressing wall 54A are arranged to face each other with a gap in the direction in which the respective electrical connection portions 35 and 45 are sandwiched.

Since the connecting member 50 includes a plurality of combinations of such pairs of the first pressing wall 53A and the second pressing wall 54A, the respective electrical connection portions 35 and 45 are connected to the interior of the third housing chamber 13. If not tilted, the first pressing wall 53A and the second pressing wall 54A, which are paired with each other, uniformly apply pressing force to the other wall surfaces 35b, 45b of the respective electrical connection portions 35, 45. (Fig. 12). Therefore, the connecting member 50 can evenly bring the wall surfaces 35a, 45a of the respective electrical connection portions 35, 45 into surface contact with each other and maintain the surface contact state. On the other hand, since the connecting member 50 has a plurality of combinations of the first pressing wall 53A and the second pressing wall 54A that form a pair, the respective electrical connections 35 and 45 are connected to each other inside the third housing chamber 13. Even if it is tilted, the first pressing wall 53A and the second pressing wall 54A, which are paired with each other, respectively follow the other wall surfaces 35b, 45b of the respective electrical connection portions 35, 45, and are evenly distributed. (Fig. 13). Therefore, even if each of the electrical connection portions 35 and 45 is tilted inside the third housing chamber 13, the connection member 50 allows the one wall surfaces 35a and 45a of the respective electrical connection portions 35 and 45 to be evenly distributed. can be brought into surface contact with each other and the surface contact state can be maintained.

For example, the first movable portion 53b is formed as a flexible portion that can be bent to allow the relative movement of the first pressing portion 53a as described above. For example, the illustrated first pressing wall 53A has a flexible cantilevered rectangular piece-shaped first movable portion 53b, and a first pressing portion 53a is provided on the free end side. ing. The illustrated first opposing wall 53 has a rectangular plate-like connecting wall 53B to which the fixed end sides of the first movable portions 53b of the respective first pressing walls 53A are connected (FIGS. 3, 6 and 7). The fixed end side of each first movable portion 53b is connected to the connecting wall 55 via the connecting wall 53B. In the first opposing wall 53, the first pressing portion 53a and the first movable portion 53b are offset toward the housing space 51 with respect to the connecting wall 53B. Therefore, in the first opposing wall 53, the clamping force of the first holding portion 61 acts only on the outer wall surface side of the connecting wall 53B, so that the first movable portion 53b can be freely bent within the elastic range. can let

Further, for example, the second movable portion 54b is formed as a flexible portion that can be bent to allow the second pressing portion 54a to move relative to each other as described above. For example, the illustrated second pressing wall 54A has a second movable portion 54b in the shape of a flexible cantilevered rectangular piece, and the second pressing portion 54a is provided on the free end side of the second movable portion 54b. ing. The illustrated second opposing wall 54 has a rectangular plate-like connecting wall 54B to which the fixed end sides of the second movable portions 54b of the respective second pressing walls 54A are connected (FIGS. 2 and 4). 3, 6 and 7). The fixed end side of each second movable portion 54b is connected to the connecting wall 55 via the connecting wall 54B. In the second opposing wall 54, the second pressing portion 54a and the second movable portion 54b are offset toward the housing space 51 with respect to the connecting wall 54B. Therefore, in the second opposing wall 54, the clamping force of the second holding portion 62 acts only on the outer wall surface side of the connecting wall 54B, so that the second movable portion 54b can be freely bent within the elastic range. can let

Here, for example, in the connecting member 50, the combination of the first pressing wall 53A and the second pressing wall 54A that form a pair is the inclination of the electrical connections 35 and 45 in the third storage chamber 13. It is desirable to arrange them side by side along the reference direction Bd for judging the presence or absence of (FIG. 13). For example, in the electrical wiring block assembly 1 shown here, the direction in which the electrical connection portions 35 and 45 are sandwiched by the first and second opposing walls 53 and 54 and the electrical connection portions from the insertion port 52 are A direction perpendicular to the inserting direction of the electrical connections 35 and 45 is a reference direction Bd for judging whether or not the electrical connection portions 35 and 45 are tilted in the third housing chamber 13 . For this reason, in the connection member 50, the combination of the first pressing wall 53A and the second pressing wall 54A that form a pair are arranged side by side along the orthogonal direction (FIG. 13).

In addition, the connection member 50 may have a pair of the first pressing wall 53A and the second pressing wall 54A, for example, depending on the length of each of the electrical connection portions 35 and 45 along the reference direction Bd. It is desirable to have 3 or more sets. In this example, three such combinations are provided.

As described above, the electrical wiring block assembly 1 of the present embodiment includes a plurality of connecting members, each of which is a combination of the first pressing wall 53A and the second pressing wall 54A. One wall surfaces 35a, 45a of the respective electrical connection portions 35, 45 are maintained in a uniform surface contact state regardless of the presence or absence of displacement of the portions 35, 45 in the third housing chamber 13 . Therefore, this electric wiring block assembly 1 can stabilize the quality of electric conduction between the busbars 30 and 40 . Since the electrical connection box JB and the wire harness WH of the present embodiment are provided with the electrical wiring block assembly 1, the effects of the electrical wiring block assembly 1 can be similarly obtained.

By the way, in the electric wiring block assembly 1 of the present embodiment, after the two electric wiring blocks to be joined (the first electric wiring block 10 and the second electric wiring block 20 in this example) are assembled, the respective Busbars (each of the busbars 30 and 40 in this example) may be housed in the electrical wiring block, and the connection member 50 may be assembled to each of the busbars after the busbars have been housed. The electric wiring block assembly 1 of the present embodiment can obtain the same effect as the previous example even if it is assembled in such a form. Also in this case, the electrical connection box JB and the wire harness WH of the present embodiment are provided with the electrical wiring block assembly 1, so that the effects of the electrical wiring block assembly 1 can be similarly obtained. .

1 electrical wiring block assembly 10 first electrical wiring block 13 third accommodation room (accommodation room)
20 second electrical wiring block 30, 40 bus bar 35, 45 electrical connection portion 35a, 45a one wall surface 35b, 45b other wall surface 50 connection member 51 accommodation space 52 insertion port 53 first opposing wall 53A first pressing wall 53a First pressing portion 53b First movable portion 54 Second opposing wall 54A Second pressing wall 54a Second pressing portion 54b Second movable portion 55 Connection wall 60 Holding structure 61 First holding portion 62 Second holding portion Bd Reference Direction EP Electronic component JB Electric junction box JBa Housing We Electric wire WH Wire harness

Claims (5)

a conductive busbar;
a plurality of electrical wiring blocks for electrically connecting the electronic component and the bus bar inside;
a connection member for electrically connecting the electrical connection portions of the busbars housed in the two electrical wiring blocks to be joined together;
with
At least one of the two electrical wiring blocks to be joined forms an accommodation chamber in which the electrical connection portion and the connection member are accommodated,
The accommodation chamber has a holding structure that holds the connection member inside the chamber,
The connection member includes an accommodation space in which the respective electrical connection portions are accommodated by overlapping one wall surface with each other, an insertion opening into which the respective electrical connection portions can be inserted into the accommodation space, and the accommodation space. first and second opposing wall bodies that sandwich the respective electrical connection parts housed in the wall between the pair of pressing parts while applying a pressing force to the other wall surface; a connecting wall that connects the first and second opposing walls;
The first opposing wall body can move the first pressing portion as one of the pressing portions and the first pressing portion relative to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. having a plurality of first pressing walls provided with a movable first movable part,
The second opposing wall body can relatively move the second pressing part as the other pressing part and the second pressing part with respect to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. An electric wiring block assembly, comprising a second pressing wall provided with a movable second movable portion for each of the first pressing walls. In the connection member, the combination of the first pressing wall and the second pressing wall that form a pair is a reference for judging the presence or absence of inclination of each of the electrical connections in the housing chamber. 2. The electric wiring block assembly according to claim 1, wherein the electric wiring block assembly is arranged side by side along the direction. 3. The electric wiring block assembly according to claim 1, wherein said connecting member has three or more pairs of said first pressing wall and said second pressing wall. electronic components;
a conductive busbar;
a plurality of electrical wiring blocks for electrically connecting the electronic component and the bus bar inside;
a connection member for electrically connecting the electrical connection portions of the busbars housed in the two electrical wiring blocks to be joined together;
a housing that accommodates the plurality of electrical wiring blocks;
with
At least one of the two electrical wiring blocks to be joined forms an accommodation chamber in which the electrical connection portion and the connection member are accommodated,
The accommodation chamber has a holding structure that holds the connection member inside the chamber,
The connection member includes an accommodation space in which the respective electrical connection portions are accommodated by overlapping one wall surface with each other, an insertion opening into which the respective electrical connection portions can be inserted into the accommodation space, and the accommodation space. first and second opposing wall bodies that sandwich the respective electrical connection parts housed in the wall between the pair of pressing parts while applying a pressing force to the other wall surface; a connecting wall that connects the first and second opposing walls;
The first opposing wall body can move the first pressing portion as one of the pressing portions and the first pressing portion relative to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. having a plurality of first pressing walls provided with a movable first movable part,
The second opposing wall body can relatively move the second pressing part as the other pressing part and the second pressing part with respect to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. An electric connection box, comprising a second pressing wall provided with a movable second movable portion for each of the first pressing walls. electronic components;
a conductive busbar;
an electric wire;
a plurality of electrical wiring blocks for electrically connecting the electronic component, the bus bar and the electric wire inside;
a connection member for electrically connecting the electrical connection portions of the busbars housed in the two electrical wiring blocks to be joined together;
a housing that accommodates the plurality of electrical wiring blocks and draws out the electric wires;
with
At least one of the two electrical wiring blocks to be joined forms an accommodation chamber in which the electrical connection portion and the connection member are accommodated,
The accommodation chamber has a holding structure that holds the connection member inside the chamber,
The connection member includes an accommodation space in which the respective electrical connection portions are accommodated by overlapping one wall surface with each other, an insertion opening into which the respective electrical connection portions can be inserted into the accommodation space, and the accommodation space. first and second opposing wall bodies that sandwich the respective electrical connection parts housed in the wall between the pair of pressing parts while applying a pressing force to the other wall surface; a connecting wall that connects the first and second opposing walls;
The first opposing wall body can move the first pressing portion as one of the pressing portions and the first pressing portion relative to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. having a plurality of first pressing walls provided with a movable first movable part,
The second opposing wall body can relatively move the second pressing part as the other pressing part and the second pressing part with respect to the connecting wall body in the direction in which the pressing force acts and in the opposite direction. A wire harness, comprising a second pressing wall provided with a movable second movable portion for each of the first pressing walls.

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