JPS5841728Y2 - joint box - Google Patents

Description

[Detailed description of the invention] The present invention can be used, for example, in an automobile harness circuit, and can be used to create any connection combination by overlapping a plurality of laminated plates of the same shape and inserting a bus bar having connection terminals between them. This is about the joint box you get.

In recent years, automotive harness circuits have become extremely complex and diverse, and each vehicle can have as many as 100 or more branching and connecting points.

Conventional branching and connections are generally performed by soldering wires together and attaching terminals, and then taping the wires with insulating tape.

However, although this connection by taping can minimize the length of the wire used, it is difficult to maintain the insulation properties and has the drawback of poor reliability.

Further, there are also problems such as the assembly work must be done manually and is extremely inefficient.

Although joint boxes for the purpose of branching and connecting electric wires have been known in the past, the number of branches that can be made is quite limited, and currently they cannot cope with complex diversification. be.

The purpose of this invention is to solve the above-mentioned problems by making it possible, for example, to branch out and connect a small number of bus lines to a large number of child lines, and also to be able to increase or decrease the size and capacity according to the scale. The purpose is to provide a robust assembly-type joint box, which consists of a plurality of laminated plates of the same shape made of electrically insulating material, and a bus bar with connection terminals is sandwiched between these laminated plates. and a joint box forming an arbitrary number of connection ends, each bus bar having a longitudinally continuous connection part and a plurality of tongue-shaped connection terminals attached to both sides of the connection part. , the connection terminals on both sides are
By first bending the connecting part in a right angle direction to form a first leg, and then bending it further outward to form a second leg which becomes a connecting end, the connecting part and both sides are bent. Each laminate has a longitudinally continuous central spine part, and the rear surface of the spine part has a protruding strip that fits into the chevron-shaped recess of the rear bus bar. , the front surface thereof forms a concave portion into which the chevron-shaped convex portion of the preceding bus bar is fitted, and the side surface of the convex portion has a stepped portion protruding between the first legs of the connection terminals of the bus bar. It is characterized by having the following.

The present invention will be explained in detail based on illustrated embodiments.

1 to 4 show insulating laminates 1 made of synthetic resin molded products of joins 1 to boxes according to the present invention, and FIG. 7 shows busbars 2 between a plurality of laminates 1. The terminals 3 are sandwiched and stacked and connected to each other, and the required number of connection receiving terminals 3 shown in FIG. 8 are inserted into the connection terminals of the bus bar 2 for use.

5 and 6 show a bus bar 2 which is a pressed product made of a conductive metal plate, and a connecting portion 2 continuous in the longitudinal direction.
0 and a plurality of tongue-shaped connecting terminals 21 attached to both sides of the connecting part 20, and the connecting terminals 21 and 21 on both sides are bent once in a right angle direction from the connecting part 20 to form a first leg Part 22.
After forming 22, it is further bent outward to form a second leg portion 23.23, and the connecting portion 20 and the first leg portion 22.22 are formed into a small metal.

On the other hand, the laminated plate 1 includes a central spine part 5 connected in the longitudinal direction and connection holes 6 at both ends thereof, and this spine part 5 has a convex strip that fits into the chevron-shaped recess of the rear bus bar 2. 7, and a concave portion 8 into which the chevron-shaped convex portion of the preceding bus bar 2 is fitted,
In order to sandwich the bus bar 2 between the two laminated plates 1, the height of the protruding strip 7 is smaller than the depth of the concave strip 8 by approximately the thickness of the connecting portion 20 of the bus bar 2.

Further, on the side surface of this convex strip 7, there are provided step portions 9, 9 that protrude between the first leg portions 22, 22 of the connection end 21 of the bus bar 2, and the width of the step portion 9 in the longitudinal direction is as follows. First leg 22.
22, and thereby prevents the bus bar 2 from moving in the longitudinal direction.

Eaves 10.10 are provided on both sides of the spine 5, and a partition wall 11 is protruded from the front of the eaves 10, so that a large number of receiving terminal insertion portions 12 are surrounded by the eaves 10 and the partition walls 11. form.

On the rear surface of the eaves part 10, a partition wall 11 of the laminated board 1 in the rear stage is provided.
A groove 14 into which the front end 13 of the front end 13 fits is provided.

A short cylindrical protrusion 15 having the same axis as the connecting hole 6 is fitted into a recess 16 in the preceding laminated plate 1 for centering when the laminated plates 1 are assembled together.

When assembling, as shown in FIG.
The first busbar 2a is placed on top of the first busbar 2a, and the convex strips 7 of the spine section 5 of the laminated board 1a are covered by the connecting portions 20 and connection terminals 21 of the busbar 2a, so that the connection terminals 21 are inserted between each step 9. do.

Further, another second laminate 1b is stacked on top of this, and the convex strips 7 of the first laminate 1a and the first bus bar 2a are inserted into the grooves 8 in the longitudinal direction of this laminate 1b, Second laminate 1b
The protrusion 15 around the connection hole 6 is arranged to fit into the recess 16 of the first laminate 1a.

As a result, the tip portion 13 of the partition wall 11 fits into the groove 14 of the eave portion 10 of the first laminate 1a, and the connection holes 6 also coincide with each other.

Similarly, the second busbar 2 is placed on the second laminate 1b.
b, and then the third laminate 1C.

When the required number of stages are stacked, a bolt is inserted into the connection hole 6 and fixed, thereby obtaining a joint box having multiple stages and a large number of connection terminals 21.

Incidentally, as mentioned above, it is preferable that the bus bars 2a, 2b, 2C, . Those cut into appropriate lengths are used as appropriate.

The joint box assembled in this way has
The connection receiving terminal 3 shown in FIG. 8 is appropriately connected to the connection terminal 21 for use.

The receiving terminal 3 is connected to a power source, a fuse, an electric device, etc. by electric wires 30, and a joint 31 with the connecting terminal 21 is covered with a synthetic resin case 32 shown by a dashed line.

A protrusion 33 is provided on the side of the case 32, and this protrusion 33 engages with a groove-shaped engagement portion 17 provided on a part of the partition wall 11 of the laminate plate 1, and the receiving terminal 3 This prevents the terminal from accidentally falling out of the terminal insertion portion 12.

As explained above, the joint box according to the present invention has a spar having a chevron-shaped center which is appropriately sandwiched between a plurality of laminated plates each having a central spine portion with an uneven part that fits into the chevron-shaped part. The bus bar is firmly fixed between the laminated plates.

Furthermore, numerous branches and connections can be easily implemented.
It becomes possible to easily respond to changes in the number of connected devices.

Therefore, branching and connecting can be performed extremely easily compared to conventional branching and connecting methods such as soldering, and the manufacturing cost of the harness circuit is significantly reduced and its reliability is improved.

[Brief explanation of drawings]

The drawings show an embodiment of the joint box according to the present invention, in which Fig. 1 is a rear view with a part of the laminate board omitted, Fig. 2 is a partially front view thereof, and Fig. 3 is a part thereof. Floor plan, 4th
The figure is a sectional view taken along the line IV-IV in Fig. 2, Fig. 5 is a partial front view of the bus bar, Fig. 6 is a sectional view taken along the line VI-VI in Fig. 5, and Fig. 7 is an assembled view. FIG. 8 is a partial plan view of the joint box in the open state, and a perspective view of the receiving terminal. Code 1 is a laminated board, 2 is a bus bar, 3 is a connection terminal, 5
1 is a spine part, 7 is a convex part, 8 is a concave part, 9 is a step part, 10 is an eaves part, 11 is a partition wall, 12 is a terminal insertion part, 13 is a tip part, 14 is a groove, 17 is a part An engaging part, 20 is a connecting part, 21
is a connection terminal, 22 is a first leg, 23 is a second leg, 3
1 is a joint, 32 is a case, and 33 is a projection.

Claims (1)

[Scope of utility model registration request] A joint box in which a plurality of laminates of the same shape made of electrically insulating material are polymerized, and bus bars having connection terminals are sandwiched between these laminates to form an arbitrary number of connection ends, and each The bus bar includes a connecting portion continuous in the longitudinal direction and a plurality of tongue-shaped connecting terminals attached to both sides of the connecting portion. After forming the leg part, the second leg part is further bent outward to form the second leg part which becomes the connecting end part.
The connecting portion and the first legs on both sides form a chevron shape, and each laminate is provided with a central spine portion that continues in the longitudinal direction, and the rear surface of the spine portion is inserted into the chevron-shaped recess of the rear bus bar. The front surface forms a concave part into which the chevron-shaped convex part of the bus bar in the previous stage is fitted, and the side surface of the convex part has a concave part for fitting the first leg of the connection terminal of the bus bar. A joint box characterized by having a stepped part that protrudes between.