JP7036569B2 - Branch connector and communication network - Google Patents

Description

The present invention relates to a branch connector for branching a twisted pair line and a communication network using this branch connector.

As a conventional branch connector for twisted pair wire, the one disclosed in Patent Document 1 has been proposed. As shown in FIGS. 17 and 18, the branch connector 100 includes a housing 102 having a pair of left and right terminal accommodating chambers 101, and a pair of pressure welding terminals 110 arranged in each terminal accommodating chamber 101. The pair of terminal accommodating chambers 101 are partitioned by a partition wall 103. The partition wall 103 is provided with an upward distribution rib 104 projecting upward and a downward distribution rib 105 projecting downward. Further, beam portions 106 are provided at upper and lower intermediate positions of each terminal accommodating chamber 101. The beam portion 106 is not arranged at the approach position from below of the upper pressure contact blade 111 described below.

Each pressure welding terminal 110 has an upper pressure welding blade 111 arranged at an upper position and a lower pressure welding blade 112 arranged at a lower position. The upper pressure welding blade 111 and the lower pressure welding blade 112 are connected to each other.

Next, the work of assembling the first electric wire W1, the second electric wire W2, and the pressure welding terminal 110 to the housing 102 will be described. First, the two second electric wires W2 whose twist is partially released are sorted by the downward distribution rib 105 and inserted into the pair of terminal accommodating chambers 101 from below the housing 102.

Next, each pressure welding terminal 110 is inserted into each terminal accommodating chamber 101 from below the housing 102. At the time of this insertion, since the second electric wire W2 is prevented from moving upward by the beam portion 106, the upper pressure welding blade 111 passes through while cutting the insulating coating of the second electric wire W2, and then further below the pressure welding terminal 110. The second electric wire W2 is pressure-welded to the lower pressure-welding blade 112 by continuing the insertion from.

Next, the two first electric wires W1 whose twist is partially released are sorted by the upward distribution rib 104 and inserted into the pair of terminal accommodating chambers 101 from above the housing 102. When the two first electric wires W1 are inserted into the terminal accommodating chambers 101 of the housing 102, each first electric wire W1 is pressure-welded to the upper pressure welding blade 111.

As a result, the two first electric wires W1 constituting the twisted pair wire and the two second electric wires W2 constituting the twisted pair wire are electrically connected to each other via the pair of pressure welding terminals 110.

Japanese Unexamined Patent Publication No. 2016-152147 Japanese Unexamined Patent Publication No. 2016-115505

However, in the conventional branch connector 100, the twist shape of the two first electric wires W1 and the two second electric wires W2 are both untwisted in a part of the section, so that there is a problem that the communication quality is deteriorated.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a branch connector capable of branching a twisted pair line while maintaining communication quality, and a communication network using a branch connector. ..

The present invention has a distribution path portion in which two first electric wires constituting a twisted pair wire maintain a twisted shape and are arranged with a gap between the two first electric wires. A pair of pressure-welding terminals connected to the first housing and two second electric wires constituting the twisted pair wire are fixed, and in a state of being assembled to the first housing, the pair of pressure-welding terminals are two. The branch connector is provided with a second housing portion to be pressure-welded to each of the first electric wires.

According to the present invention, the two first electric wires can be spaced apart from each other, but since the twisted shape is maintained and the arrangement is made, the twisted pair wire can be branched while maintaining the communication quality.

It is an exploded perspective view of the branch connector which shows 1st Embodiment of this invention. The first embodiment of this invention is shown, and it is the whole perspective view of the branch connector. The first embodiment of the present invention is shown, (a) is a sectional view taken along the line A1-A1 of FIG. 2, (b) is a sectional view taken along the line A2-A2 of FIG. 2, and (c) is a sectional view taken along the line BB of FIG. It is a figure. It is a perspective view which shows the 1st Embodiment of this invention and looked at the inner surface side of the 1st housing part. The first embodiment of the present invention is shown, (a) is a perspective view which looked at the inner surface side of the united housing part of a 2nd housing, (b) is seen the outer surface side of the united housing part of a 2nd housing part. It is a perspective view. It is a top view which shows 1st Embodiment of this invention, and is the state which two 1st electric wires are arranged in the 1st housing part. It is a perspective view which shows the 1st Embodiment of this invention, and shows the state before the 1st housing part is combined with the housing part for uniting. It is a perspective view which shows the 1st Embodiment of this invention, and shows the state before fitting a housing part for fixing a terminal with a housing part for uniting. It is sectional drawing which shows 1st Embodiment of this invention, and shows the state before fitting the housing part for fixing a terminal with the housing part for uniting. The first embodiment of this invention is shown, and it is the whole perspective view of the branch connector of a plurality of branches. The first embodiment of this invention is shown, and it is the block diagram of the communication network. A second embodiment of the present invention is shown, and is an overall perspective view of a branch connector. A second embodiment of the present invention is shown, which is a cross-sectional view taken along the line E1-E1 of FIG. A second embodiment of the present invention is shown, which is a cross-sectional view taken along the line E2-E2 of FIG. A second embodiment of the present invention is shown, which is a cross-sectional view taken along the line FF of FIG. A third embodiment of the present invention is shown, and is a schematic perspective view of a branch connector having a plurality of branches. It is a perspective view of the branch connector of the conventional example. It is sectional drawing of the branch connector of the conventional example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)
1 to 11 show a first embodiment of the present invention. As shown in FIG. 11, the communication network 1 is mounted on the vehicle. The communication network 1 includes a trunk line w1, a plurality of branch lines w2 branched at a plurality of points of the trunk line w1, a plurality of ECUs (electronic control units) 2 connected to each branch line w2, and both ends of the trunk line w1. It includes two terminating resistance units 3 connected to each other. Each ECU 2 is equipped with a CAN interface (not shown). Each ECU 2 transmits and receives signals by CAN communication (controller area network).

As the trunk line w1, two first electric wires W1 constituting a twisted pair wire are used. The two first electric wires W1 are arranged in a twisted shape in which they are almost in close contact with each other. As the branch line w2, two second electric wires W2 that also form a twisted pair wire are used. The two second electric wires W2 are arranged in a twisted shape in which they are almost in close contact with each other. Then, the twisted pair wire is branched by the branch connectors 5A and 5E. Hereinafter, the branch connectors 5A and 5E will be described.

(Single branch branch connector 5A)
As shown in FIGS. 1 to 5, the single-branch branch connector 5A comprises a twisted pair wire with a first housing portion 10 arranged so that two first electric wires W1 constituting the twisted pair wire pass through. It is provided with a second housing portion 20 to which a pair of pressure welding terminals 50 connected to each of the two second electric wires W2 are fixed.

The first housing portion 10 has a substantially rectangular plate shape. The first housing portion 10 has a strategy route portion 11. The arrangement path portion 11 has a twist groove 12 and three ribs 13a and 13b erected at intervals in the arrangement direction of the first electric wire W1. The twist groove 12 is formed in a groove having a shape in which two first electric wires W1 are spaced apart from each other and follow a twist shape. The ribs 13a and 13b at the three positions are arranged at intervals of substantially the twist pitch P of the two first electric wires W1. The central rib 13a has a diamond shape when viewed from above. The central position where both side surfaces of the central rib 13a are most separated from each other is the pressure contact position of the pair of pressure contact terminals 50 described below. The ribs 13b on both sides have an isosceles triangle shape when viewed from above.

That is, in the arrangement path portion 11, the three ribs 13a and 13b interrupt each other between the two first electric wires W1, so that the two first electric wires W1 open a distance from each other while maintaining the twist shape. Arranged in the twist groove 12. The two first electric wires W1 arranged in the twist groove 12 are respectively drawn out from both ends of the twist groove 12 to the outside of the first housing portion 10. The twist pitch of the two first electric wires W1 in the arrangement route portion 11 is substantially the same as the twist pitch P of the two first electric wires W1 other than the arrangement route portion 11.

The arrangement path portion 11 is provided with a pair of pressure welding blade guide grooves 14 continuous from the top surface of the central rib 13a to the bottom surface of each twist groove 12. Each pressure welding blade guide groove 14 is formed to have a width dimension substantially the same as the wall thickness of the pressure welding blade 52 or a slightly wider dimension.

A pair of locking claws 15 are projected on both side surfaces of the first housing portion 10.

The second housing portion 20 is a separate body from the combined housing portion 21 assembled to the first housing portion 10 and the combined housing portion 21, and the terminal fixing housing portion 31 to which the pair of pressure welding terminals 50 are fixed. And have.

The combined housing portion 21 has an upper surface wall 22 formed to have a size slightly larger than that of the first housing portion 10, and four side walls 23a and 23b suspended from the entire peripheral edge of the upper surface wall 22. The inner surface of the upper surface wall 22 is provided with a protrusion 24 having a shape that follows the shape of the twist groove 12 (a shape in which the two first electric wires W1 follow the twist shape in which the distance between the two first electric wires W1 is widened). The protrusion 24 enters the twist groove 12 in a state of being assembled to the first housing portion 10. Inside the upper surface wall 22, a positioning recess 24a is provided by being surrounded by a protruding wall 24. A pair of positioning holes 22a are formed at both ends of the upper surface wall 22. A pair of pressure welding blade entry holes 25 are formed in the upper surface wall 22.

The four side walls 23a and 23b are arranged at positions that cover the entire side surface of the first housing portion 10 in a state of being assembled to the first housing portion 10. A pair of electric wire insertion grooves 26 are formed in each of the pair of side walls 23a orthogonal to the arrangement direction of the first electric wire W1. A rib 27 is provided between the pair of electric wire insertion grooves 26 on both side walls 23a. Each rib 27 is inserted between the two first electric wires W1 together with the ribs 13b on both sides of the first housing portion 10 in a state of being assembled to the first housing portion 10.

A pair of elastic locking frames 28 are provided on the pair of side walls 23b extending along the same direction as the arrangement direction of the first electric wire W1. By locking the pair of elastic locking frames 28 to the locking claws 15 of the first housing portion 10, the combined housing portion 21 of the first housing portion 10 and the second housing portion 20 is assembled.

The united housing portion 21 has a connector fitting portion 29 on the upper surface of the upper surface wall 22. A pair of pressure welding blade entry holes 25 are opened inside the connector fitting portion 29. A pair of elastic locking frames 30 are provided on the fitting inlet side of the connector fitting portion 29. The terminal fixing housing portion 31 is fitted to the connector fitting portion 29.

The terminal fixing housing portion 31 has a connector housing portion 32 and a closing lid 34 connected to the connector housing portion 32 via a hinge 33. The connector housing portion 32 has a terminal accommodating chamber 35 inside. A terminal insertion port 36 is provided on the rear wall 32a of the connector housing portion 32. A pressure welding blade protrusion 37 is provided on the front wall 32b of the connector housing portion 32. The connector housing portion 32 is provided with a lance fitting port 38 for fitting the locking lance 41. A pair of locking claws 39a and 39b are provided on the front side and the rear side of the connector housing portion 32, respectively.

The closing lid 34 is formed with an electric wire lead-out groove 34a. A pair of elastic locking frames 40 are provided so as to project from the closing lid 34. By locking the pair of elastic locking frames 40 of the closing lid 34 to the pair of locking claws 39b of the connector housing portion 32, the terminal insertion port 36 is closed by the closing lid 34.

The pair of pressure welding terminals 50 each have a crimping portion 51 for crimping and connecting the second electric wire W2 and a crimping blade 52 for crimping and connecting to the first electric wire W1. The pair of pressure welding terminals 50 are arranged in a terminal accommodating chamber 35 of the connector housing portion 32 in a state of being positioned by a locking lance 41 or the like. The pressure welding blade 52 of each pressure welding terminal 50 projects from the pressure welding blade protrusion port 37. The two second electric wires W2 connected to the pair of pressure welding terminals 50 are led out from the terminal insertion port 36 and the electric wire lead-out groove 34a. A ferrite 42 is attached to the terminal portion of each second electric wire W2.

Next, the procedure for assembling the branch connector 5A will be described. The two first electric wires W1 constituting the twisted pair wire are inserted into the twisted groove 12 of the first housing portion 10. Insertion into the twist groove 12 can be easily performed by inserting the ribs 13a and 13b into three places between the two first electric wires W1. As shown in FIG. 6, the two first electric wires W1 inserted into the twist groove 12 are arranged in a twist shape in which the distance between them is widened.

Next, as shown in FIG. 7, the first housing portion 10 is combined with the combined housing portion 21 of the second housing portion 20. That is, the first housing portion 10 is covered with the combined housing portion 21 of the second housing portion 20, and the elastic locking frame 30 of the combined housing portion 21 is locked to the locking claw 15 of the first housing portion 10. As a result, the protruding wall 24 of the uniting housing portion 21 enters the twist groove 12 of the first housing portion 10, and each first electric wire W1 is positioned in the twist groove 12.

Further, the tip end side of the central rib 13a enters the positioning recess 24a of the housing portion 21 for coalescence. The pair of ribs 13b at both ends enters the pair of positioning recesses 24a of the housing portion 21 for coalescence. As a result, the first housing portion 10, the uniting housing portion 21, and the second housing portion 20 are united in a positioned state.

Work to connect the pressure welding terminals 50 to the two second electric wires W2 constituting the twisted pair wire before or after the union work of the first housing portion 10 and the union housing portion 21 of the second housing portion 20. And, the work of fixing the pressure welding terminal 50 to the terminal fixing housing portion 31 of the second housing portion 20 is performed.

The work of connecting the pressure welding terminal 50 to the second electric wire W2 peels off the coating of the terminal portion of the two second electric wires W2. Before peeling or after peeling, the ferrite 42 is attached to the back side of the terminal portion of each second electric wire W2. Next, the crimping portion 51 of each pressure welding terminal 50 is crimped and connected to the terminal portion of each second electric wire W2. This completes.

As shown in FIG. 1, the work of fixing the pressure welding terminal 50 to the terminal fixing housing portion 31 is performed by setting the closing lid 34 in the open position and using the pair of pressure welding terminals 50 at the head of the pressure welding blade 52 as the terminal of the connector housing portion 32. Insert into the containment chamber 35. Next, the locking lance 41 is fitted from the lance fitting port 38. With this, the pair of pressure welding terminals 50 are fixed to the terminal fixing housing portion 31. Next, as shown in FIG. 2, the closing lid 34 is set to the closing position, and the elastic locking frame 40 of the closing lid 34 is locked to the locking claw 39b of the terminal fixing housing portion 31. This completes.

Next, as shown in FIGS. 8 and 9, the terminal fixing housing portion 31 is fitted to the connector fitting portion 29 of the uniting housing portion 21. That is, the terminal fixing housing portion 31 is inserted into the connector fitting portion 29 of the uniting housing portion 21, and the elastic locking frame 30 of the connector fitting portion 29 is engaged with the locking claw 39a of the terminal fixing housing portion 31. Stop. In this fitting process, the pressure welding blades 52 of the pair of pressure welding terminals 50 enter the twist groove 12 while being guided by the pressure welding blade guide groove 14. In the mating complete state, each pressure welding blade 52 of the pair of pressure welding terminals 50 is pressure welding connected to each first electric wire W1.

As described above, the branch connector 5A has a first housing portion 10 having an arrangement path portion 11 in which two first electric wires W1 constituting the twisted pair wire are arranged in a twisted shape in which the distance between them is widened. In a state where a pair of pressure welding terminals 50 connected to each of the two second electric wires W2 constituting the twisted pair wire are fixed and assembled to the first housing portion 10, the pair of pressure welding terminals 50 are the second. It is provided with a second housing portion 20 that is pressure-welded to each of the electric wires W1.

Therefore, although the distance between the two first electric wires W1 is widened, the twisted pair wire can be branched while maintaining the communication quality because the twisted shape is maintained.

The arrangement path portion 11 has a twist groove 12 in which the two first electric wires W1 follow a twist shape in which the two first electric wires W1 are spaced apart from each other. Therefore, since the twisted shape of the two first electric wires W1 can be reliably maintained, the communication quality can be reliably maintained.

The arrangement path portion 11 has ribs 13a and 13b that cut in between the two first electric wires W1. Therefore, the distance between the two first electric wires W1 can be easily widened.

The combined housing portion 21 of the second housing portion 20 has a protrusion 24 that enters the twist groove 12 in a state of being assembled to the first housing portion 10. Therefore, the first electric wire W1 can be reliably positioned in the twist groove 12, which contributes to maintaining the communication quality. In particular, in this embodiment, the protruding wall 24 has a shape that follows the shape of the twisted groove 12 (a shape that the two first electric wires W1 follow the twisted shape in which the distance between the two first electric wires W1 is widened). Reliable positioning is possible over the range.

The second housing portion 20 is assembled to the first housing portion 10, and the combined housing portion 21 having the connector fitting portion 29 and the pair of pressure welding terminals 50 are fixed and fitted to the connector fitting portion 29. It is provided with a terminal fixing housing portion 31.

Therefore, the branch connector 5A can perform the branching work of the twisted pair wire by the same work as the connection of the male and female connectors. The work of assembling the first housing part 10 and the uniting housing part 21 to the trunk line w1 (work on the trunk line w1 side) and the fitting work of fitting the terminal fixing housing part 31 connected to the branch line w2 to the uniting housing part 21. Since the work (work of connecting the branch line w2 to the trunk line w1) can be performed at different timings, the degree of freedom of work is improved.

In the two first electric wires W1 constituting the twisted pair wire, ribs 13a and 13b are interposed between the first electric wires W1 at three places, and the pressure welding blade 52 is pressure-welded and connected at the position of the rib 13a in the center thereof. .. Therefore, even if the tensile force of the two first electric wires W1 acts on the branch connector 5A, the tensile force of the first electric wire W1 does not directly act on the pressure welding connection portion by the pressure welding blade 52, so that the reliability of the pressure welding connection is high. ..

The communication network 1 is located between the two first electric wires W1 constituting the twisted pair wire, the two second electric wires W2 constituting the twisted pair wire, and the two first electric wires W1 and the two second electric wires W2. It is provided with a branch connector 5A having the above-described configuration for connecting the above. Therefore, in the branch connector 5A, the distance between the two first electric wires W1 can be widened, but the twist shape is maintained even in the branch connector 5A. From the above, the communication network 1 in which the twisted pair line is branched while maintaining the communication quality can be obtained.

(Multi-branch branch connector 5E)
FIG. 10 shows a branch connector 5E having a plurality of branches. The multi-branch branch connector 5E differs from the single-branch branch connector 5A described above in the following configuration.

That is, the arrangement path portion of the first housing portion is configured so that the range in which the two first electric wires W1 have a twisted shape in which the distance between the two first electric wires W1 is widened is widened so that a pair of pressure welding terminals can be pressure-welded and connected at three places. ing. The uniting housing portion 21 is provided with three connector fitting portions 29. There are three terminal fixing housing portions 31. Since the configuration of each terminal fixing housing portion 31 is the same as that of a single branch, the same reference numerals are given to the same configuration locations in the drawings, and the description thereof will be omitted.

The multi-branch branch connector 5E can be assembled in the same manner as the single-branch branch connector 5A.

Even in this multi-branch branch connector 5E, for the same reason as the single-branch branch connector 5A, the distance between the two first electric wires W1 is widened, but since the twisted shape is maintained and the arrangement is made, communication is performed. It has the effect of being able to branch twisted pair wires while maintaining quality.

Moreover, in the branch connector 5E having a plurality of branches, a plurality of branch lines w2 can be branched from the same branch point of the trunk line w1. When a plurality of branch lines w2 are branched from the same branch point of the trunk line w1, it can be handled as a single component, and the handleability of the component is good. For example, there is an effect that it is not necessary to perform fixing work to the vehicle body for each branch connector 5A.

In this first embodiment, the number of branches of the branch connector 5E is three, but it may be two or four or more.

(Second Embodiment)
12 to 14 show a second embodiment of the present invention. The communication network 1 has the same configuration as that of the first embodiment (see FIG. 11). In this communication network 1, a branch connector (branch connection structure) 5B is used for branching the twisted pair line.

(Branch connector 5B)
The branch connector 5B of the second embodiment is different from that of the first embodiment in that the second housing portion 20 is formed of a single housing.

That is, in the second housing portion 20, the combined housing portion 21 assembled to the first housing portion 10 and the terminal fixing housing portion 31 to which the pair of pressure contact terminals 50 are fixed are integrally formed. Since it is integrally formed in this way, a locking claw and an elastic locking frame for locking between the housing portion 21 for coalescence and the housing portion 31 for fixing terminals are not provided.

Since the other configurations are the same as those in the first embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

Next, the procedure for assembling the branch connector 5B will be described. The two first electric wires W1 constituting the twisted pair wire are inserted into the twisted groove 12 of the first housing portion 10 as described in the first embodiment.

Next, in the manner described in the first embodiment, the work of connecting the pressure welding terminal 50 to each of the two second electric wires W2 constituting the twisted pair wire and the terminal fixing housing portion 31 of the second housing portion 20. The pressure welding terminal 50 of the above is fixed.

Next, the uniting housing portion 21 of the second housing portion 20 is combined with the first housing portion 10 in the manner described in the first embodiment. As a result, the protruding wall 24 of the uniting housing portion 21 enters the twist groove 12 of the first housing portion 10, and each first electric wire W1 is positioned in the twist groove 12.

In this coalescence process, the pressure welding blades 52 of the pair of pressure welding terminals 50 enter the twist groove 12 while being guided by the pressure welding blade guide groove 14. In the mating complete state, each pressure welding blade 52 of the pair of pressure welding terminals 50 is pressure welding connected to each first electric wire W1.

Even in the branch connector 5B of the second embodiment, for the same reason as in the first embodiment, the distance between the two first electric wires W1 can be widened in the branch connector 5B, but the twisted shape is maintained. Since the arrangement is made, there is an effect that the twisted pair line can be branched while maintaining the communication quality.

Since the second housing portion 20 is integrally formed with the united housing portion 21 assembled to the first housing portion 10 and the terminal fixing housing portion 31 to which the pair of pressure contact terminals 50 are fixed, the second housing portion 20 is combined. Since it is not necessary to perform the fitting work between the housing portion 21 for fixing the terminal and the housing portion 31 for fixing the terminal, the assembling workability of the branch connector 5B is better than that of the first embodiment. Further, the branch connector 5B of the second embodiment has a reduction in the number of parts and a weight reduction as compared with the first embodiment.

The communication network 1 includes a branch connector 5B having the above configuration for connecting between the two first electric wires W1 and the two second electric wires W2. Therefore, for the same reason as in the first embodiment, the communication network 1 in which the twisted pair line is branched while maintaining the communication quality can be obtained.

(Multi-branch branch connector 5F)
FIG. 15 shows a branch connector 5F having a plurality of branches. The multi-branch branch connector 5F differs from the single-branch branch connector 5B described above in the following configuration.

That is, the arrangement path portion of the first housing portion is configured so that the range in which the two first electric wires W1 have a twisted shape in which the distance between the two first electric wires W1 is widened is widened so that a pair of pressure welding terminals can be pressure-welded and connected at three places. ing. The combined housing portion 21 is integrally provided with three terminal fixing housing portions 31. Since the configuration of each terminal fixing housing portion 31 is the same as that of a single branch, the same reference numerals are given to the same configuration locations in the drawings, and the description thereof will be omitted.

The multi-branch branch connector 5F can be assembled in the same manner as the single-branch branch connector 5B.

Even in this multi-branch branch connector 5F, for the same reason as the single-branch branch connector 5B, the distance between the two first electric wires W1 is widened, but since the twisted shape is maintained and the arrangement is made, communication is performed. It has the effect of being able to branch twisted pair wires while maintaining quality.

Moreover, in the branch connector 5F having a plurality of branches, a plurality of branch lines w2 can be branched from the same branch point of the trunk line w1. When a plurality of branch lines w2 are branched from the same branch point of the trunk line w1, it can be handled as a single component, and the handleability of the component is good.

In this second embodiment, the number of branches of the branch connector 5F is three, but it may be two or four or more.

(Third Embodiment)
FIG. 16 shows a multi-branch branch connector 5G according to the third embodiment. The branch connector 5G of the third embodiment is configured by connecting the branch connector 5A of the first embodiment. That is, each branch connector 5A has connecting portions 44, 45 at both ends of the uniting housing portion 21. A plurality of branch connectors 5A can be connected in a straight line. Further, as shown by a virtual line in FIG. 16, the branch connector 5A is configured so that it can be assembled even in the direction opposite to that of the other branch connectors 5A. Therefore, the second electric wire W2 from each branch connector 5A can be smoothly pulled out in a desired arrangement direction.

In this branch connector 5G, when a plurality of branch lines w2 are branched from the same branch point of the trunk line w1, it can be handled as a single component, and the component handleability is good. For example, there is an effect that it is not necessary to perform fixing work to the vehicle body for each branch connector 5A.

As a modification of the third embodiment, a structure having the branch connector 5B of the second embodiment as a connecting structure can be considered.

(Modification example)
In each embodiment, the second housing portion 20 has a pair of pressure welding terminals 50, that is, one set of pressure welding terminals 50, but may have a configuration having a plurality of sets of pressure welding terminals 50. In this case, a plurality of sets of pressure welding terminals 50 may be connected to one set (two twisted pair wires) of the second electric wire W2, and the plurality of sets of pressure welding terminals 50 may be connected to each of the plurality of sets of pressure welding terminals 50. It may be configured to be connected to the second electric wire W2.

In the single-branch branch connectors 5A and 5B of each embodiment, the two first electric wires W1 constituting the twisted pair wire are configured such that ribs 13a and 13b are interposed at three locations, but the number of ribs is one. However, it may be two or four or more.

In each embodiment, the arrangement path portion 11 is formed by the twist groove 12 and the ribs 13a and 13b, but the configuration is such that the two first electric wires W1 can be arranged in a twist shape in which the distance between the two first electric wires W1 is widened. It's fine. For example, the arrangement path portion 11 may be configured with only the twist groove 12 or may be configured with only the rib 13a.

In each embodiment, the arrangement path portion 11 has a twist groove 12, but a pair of side walls following a twist shape in which two first electric wires W1 are spaced apart from each other are erected in the first housing portion 10. May be formed. The pair of side walls may be intermittent side walls instead of continuous side walls.

In each embodiment, the protrusion 24 has a shape that follows the shape of the twist groove 12 (the two first electric wires W1 are spaced apart from each other). The shape follows the widened twist shape), but it may be a plurality of protrusions that are intermittently inserted into the twist groove 12.

1 Communication network W1 1st electric wire W2 2nd electric wire 5E, 5F, 5G Branch connector 10 1st housing part 11 Arrangement route part 12 Twist groove 13a, 13b Rib 20 2nd housing part 21 Combined housing part 24 Protrusion wall 29 Connector Fitting part 31, 31A Housing part for fixing terminals 50 Pressure welding terminal 52 Pressure welding blade

Claims (7)

A first housing portion having a distribution path portion in which two first electric wires constituting a twisted pair wire are arranged in a twisted shape with a distance from each other, and a first housing portion.
A pair of pressure-welding terminals connected to the two second electric wires constituting the twisted pair wire are fixed to each other, and in a state of being assembled to the first housing portion, they are provided at the tips of the pair of pressure-welding terminals. A branch connector characterized in that a pressure welding blade is provided with a second housing portion for pressure welding connection to each of the two first electric wires. The branch connector according to claim 1.
The arrangement path portion is a branch connector characterized in that the two first electric wires have a twist groove that follows a twist shape that is spaced apart from each other. The branch connector according to claim 1 or 2.
The arrangement path portion is a branch connector characterized by having a rib that cuts in between the two first electric wires. The branch connector according to claim 3.
The second housing portion is a branch connector characterized by having a protruding wall that enters the twist groove in a state of being assembled to the first housing portion. The branch connector according to any one of claims 1 to 4.
The second housing portion is assembled to the first housing portion, and a plurality of housing portions for uniting having a connector fitting portion and a pair of pressure contact terminals fixed to the connector fitting portion to be fitted to the connector fitting portion. A branch connector characterized by having a housing for fixing terminals. The branch connector according to any one of claims 1 to 4 .
The second housing portion is characterized in that a combined housing portion assembled to the first housing portion and a terminal fixing housing portion to which the pair of pressure-displacement terminals are fixed are integrally formed. Branch connector. The two first wires that make up the twisted pair wire,
The two second wires that make up the twisted pair wire,
A communication network comprising the branch connector according to any one of claims 1 to 6, which connects between the two first electric wires and the two second electric wires.

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