JP2001068246A - Method for fixing bus bar to holder, and holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and surely carry out fixing of a bus bar to a holder at a low cost. SOLUTION: In this method, each of plural bus bars 5 are fixed to a prescribed position inside a holding groove 7 with a holder 9 in an assembling process for a bus bar temporary assembly 1 for constituting one portion of a connector. In the holding groove 7, a recessed part 17 wherein a through hole 14 is penetrated in a groove bottom part in a fixed position of the bus bar 5 and which is communicated to the through hole 14 to make a groove width in a side of the groove bottom wider than a width of the bus bar 5 is recessed in both sidewalls of the bus bar 5. Therefore, a movable part of a molding die is left from the recessed part 17 through the through hole 14 in the holding groove 7, and an undercut part, for example an overhung portion in a bus bar fixing part, which makes an operation of the movable part of the molding die difficult is eliminated to maintain favorable moldability of the holder 9 as the whole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of fixing a plurality of bus bars at predetermined positions in a holding groove of a holder in a process of assembling a temporary bus bar assembly forming a part of a connector, and a structure of the holder. Things.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 8 to 11, for example, a temporary bus bar assembly constituting a part of a connector is known. 8 is a perspective view showing a first temporary bus bar assembly 51 of the related art, FIG. 9 is a perspective view showing a second temporary bus bar assembly 52 of the related art, and FIG. 6 is a bus bar temporary assembly of FIGS. 8 and 9. FIG. 7 is a perspective view showing a preformed body 54 incorporating the preformed bodies 51 and 52, and FIG. 7 is a perspective view showing a connector 53 which is a main molded body incorporating the preformed body 54 in FIG. FIGS. 10A and 10B show a conventional holder 5.
11A and 11B are explanatory views showing a series of bus bar fixing operations of the holding grooves 57 and 58 of FIGS.
It is explanatory drawing which shows a series of bus bar fixing operation | work of the holding groove 57 of the conventional holder 59,60.

When the plurality of bus bars 5 and 6 are directly inserted into the molding die of the connector 53 as the molded body, the connection terminal group is likely to be displaced or deformed by the flow of the injected resin. The time required for the insert into the mold and the molding cycle are lengthened, and there is a problem that the quality of the molded product deteriorates due to deterioration of the resin in the injection molding machine. To solve this problem,
A pre-formed body 54 prepared by insert-molding in multiple stages using a plurality of bus-bar temporary assemblies 51 and 52 in which the plurality of bus bars 5 and 6 were pre-assembled in advance was prepared.
8 and 9, and FIGS. 10 and 11, the first
And the second bus bar temporary assembly 51, 52
4 are a plurality of temporary assemblies that are insert-molded in multiple stages as constituent members, and a plurality of bus bars 5 and 6 are
9, 60 were fitted in the holding grooves 57, 58.

The holder 5 formed by molding a synthetic resin material
9 and 60 are holding grooves 57 and 60 as shown in FIG.
A busbar fixing portion 61 is formed by overhanging predetermined upper edges of both side walls defining the busbar 58 so that the groove width D becomes narrower than the width B of the busbars 5, 6. The bus bars 5, 6 pass through the groove width D between the bus bars 61 and the holding grooves 57,
When the bus bar fixing portion 61 is press-fitted into the groove 58, the bus bar fixing portion 61 is elastically deformed and bent outward to partially widen the groove width D. Then, as shown in FIG. The bus bars 5 and 6 are fixed so as not to come out of the holding grooves 57 and 58 after returning.

[0005] Further, the holders 59 and 60 are shown in FIG.
As shown in (a), the protrusions 6 are formed at the bottoms of the holding grooves 57 and 58.
2, fixing holes 63 are provided in the bus bars 5 and 6 in correspondence with the projections 62, and the head of the fixing projections 62 into which the fixing holes 63 are fitted is heated as shown in FIG. I was scolding.

[0006]

However, FIG.
As shown in FIG. 10A and FIG. 10B, in the method of fixing the plurality of bus bars 5 and 6 to predetermined positions on the holders 59 and 60, the bus bars 5 and 6 are formed from a synthetic resin material. Since the busbar fixing portion 61 is made of a conductive metal material that is harder than the busbar fixing portion 61, the busbar fixing portion 61 is shaved.
As shown in (b), there is a problem that the fixing function is lost due to the lack of the bus bar fixing portion 61. Further, FIG.
Also, as shown in FIG. 11B, the heating and caulking process of the fixing projection 62 has a problem that the work efficiency of the assembling process is reduced and the cost is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of fixing a bus bar to a holder and a method of fixing the bus bar to the holder quickly, reliably and inexpensively, and a holder for the bus bar. It is assumed that.

[0008]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
In a method of fixing a plurality of bus bars to predetermined positions in a holding groove of a holder in a process of assembling a temporary bus bar assembly that constitutes a part of the connector, after the bus bar is fitted into the holding groove, A die is inserted into a through hole provided at a predetermined position in the bottom of the groove, and the bus bar is partially widened by pressing the bus bar with the die and a punch, and the widened portion is formed on both side walls of the holding groove. The bus bar is fixed to the holder by receiving the bus bar in the recess formed in the holder.

Further, another object of the present invention is to provide a holder for fixing a plurality of bus bars to predetermined positions in a holding groove during a process of assembling a temporary bus bar assembly forming a part of the connector. The recess is formed by penetrating the insertion hole through the groove bottom at the fixed position of the bus bar, and communicating with the insertion hole to make the groove width near the groove bottom wider than the width of the bus bar. This is achieved by a holder characterized in that it is formed in a recess on both side walls of the holding groove.

A method of fixing a bus bar to a holder according to the present invention is a method of fixing a plurality of bus bars at predetermined positions in a holding groove of a holder during a process of assembling a temporary bus bar assembly forming a part of a connector. After the bus bar is inserted into the holding groove, a die is inserted into a through hole provided at a predetermined position on the bottom of the holding groove, and the bus bar is partially widened by pressing the bus bar with the die and the punch. However, the bus bar is fixed by receiving the widened portion in the recess formed in the side wall of the holding groove, so that when the bus bar is fitted into the holding groove, an external force that causes deformation or breakage of the holding groove. It does not act on the holding groove and does not require a complicated assembly process. Therefore, the speed, reliability and work efficiency of the assembling operation are improved, and the assembling cost is reduced.

Further, the holder for fixing a bus bar according to the present invention is a holder for fixing a plurality of bus bars at predetermined positions in a holding groove in a process of assembling a bus bar temporary assembly constituting a part of a connector. The holding groove penetrates an insertion hole at the bottom of the groove at the fixed position of the bus bar, and has a recess communicating with the insertion hole and making the groove width near the groove bottom wider than the width of the bus bar on both side walls of the holding groove. Since the holding groove allows the movable portion of the molding die to withdraw from the concave portion through the insertion hole, an undercut portion that makes it difficult to operate the movable portion of the molding die, such as the conventional bus bar described above. There is no overhanging portion in the fixing portion, and the moldability of the entire holder is maintained well.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for fixing a bus bar to a holder and an embodiment of the holder according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a partially exploded perspective view showing a first temporary bus bar assembly 1 showing an embodiment of a method of fixing a bus bar to a holder according to the present invention.
2A to 2C are explanatory views showing a series of bus bar fixing operations in FIG. 1, and FIGS. 3A to 3B are enlarged views of the series of bus bar fixing operations shown in FIG. 2. FIG. 4 is a perspective view showing an assembled first bus bar temporary assembly 1 of the present invention, and FIG. 5 is a perspective view showing an assembled second bus bar temporary assembly 2 of the present invention. 6 is a perspective view showing a preform 4 incorporating the first and second temporary bus bar assemblies 1 and 2 of the present invention, and FIG. 7 is a perspective view showing a connector 3 incorporating the preform 4 of the present invention. It is. 6 and FIG.
Since their outer shapes are the same as those of the conventional preform 54 and the connector 53 described above, they are shown in common.

1 to 7, first and second bus bar temporary assemblies 1 and 2 of the present invention are a plurality of temporary assemblies that are insert-molded in multiple stages as constituent members of a preform 4. In addition, a plurality of bus bars 5 and 6 are fitted in holding grooves 7 and 8 of holders 9 and 10. As shown in FIGS. 2 (a) and 3 (a), the holders 9, 10 of the present invention formed by molding a synthetic resin material have holding grooves 7, 8 in which the bus bars 5, 6 are fixed at the fixed positions. Insertion holes 14 are provided in the bottom portion, and concave portions 17 communicating with the insertion holes 14 to make the groove width W near the groove bottom portion wider than the width B of the bus bars 5 and 6 are formed as holding grooves 7 and 8.
Characterized in that it is recessed on both side walls of the.

As is clear from FIGS. 2A and 3A, the holding grooves 7 and 8 allow the movable portion of the molding die to retreat from the recess through the insertion hole 14, so that the holding grooves 7 and 8 There is no undercut portion that makes the operation of the movable portion difficult, such as the above-described overhanging portion in the conventional busbar fixing portion 61, and the entire moldability of the holders 9 and 10 is well maintained.

The bus bars 5, 6 are fixed to the holders 9, 10 of the present invention configured as described above as follows. That is, the method of fixing the busbars 5 and 6 to the holders 9 and 10 according to the present invention is performed in a process of assembling the temporary busbar assemblies 1 and 2 constituting a part of the connector 3.
As shown in FIGS. 2 (b), 2 (c) and 3 (b), first, the holding grooves 7, 8 are fixed to fix the holder 6 at a predetermined position in the holding grooves 7, 8 of the holders 9, 10. After the busbars 5 and 6 are fitted into the inside, a die 13 is inserted into a through hole 14 which is provided at a predetermined position in the bottom of the holding grooves 7 and 8, and the busbar is extended by the tip 13 and the front end inclined slope 15 a of the punch 15. The bus bars 5, 6 are partially widened by pressing the bus bars 5, 6, and the widened portions 16 are received in recesses 17 formed in both side walls of the holding grooves 7, 8, so that the bus bars 5, 6 are received. Is fixed.

When the bus bars 5 and 6 are fixed to the holders 9 and 10 based on the method of the present invention as described above, no harmful external force which causes deformation or breakage is applied to the holding grooves 7 and 8. No complicated assembly process is required. Therefore, the speed, reliability and work efficiency of the assembling operation are improved, and the assembling cost is reduced.

Note that the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, the die 13 may be changed so as to be inserted from a direction crossing the holding grooves 7 and 8 without being inserted upward from the insertion hole 14 provided in the bottom of the holding grooves 7 and 8.

[0018]

The method of fixing the bus bar to the holder of the present invention described above and the holder have the following novel effects. That is, the method of fixing the bus bar to the holder according to the present invention is a method of fixing a plurality of bus bars at predetermined positions in the holding groove of the holder in the process of assembling the temporary bus bar assembly forming a part of the connector,
After fitting the bus bar into the holding groove, a die is inserted into a through hole provided at a predetermined position at the bottom of the holding groove, and the bus bar is partially widened by pressing the bus bar with the die and the punch. The bus bar is fixed by receiving the widened portion in the recess formed in the side wall of the holding groove, so that when the bus bar is fitted into the holding groove, an external force that causes deformation or breakage of the holding groove is applied. It does not act on the holding groove and does not require a complicated assembly process. Accordingly, the speed, reliability, and work efficiency of the assembling work are improved, and the assembling cost can be reduced.

Further, the holder for fixing a bus bar according to the present invention is a holder for fixing a plurality of bus bars at predetermined positions in a holding groove during a process of assembling a bus bar temporary assembly forming a part of a connector, The holding groove penetrates an insertion hole at the bottom of the groove at the fixed position of the bus bar, and has a recess communicating with the insertion hole and making the groove width near the groove bottom wider than the width of the bus bar on both side walls of the holding groove. Since the holding groove allows the movable portion of the molding die to withdraw from the concave portion through the insertion hole, an undercut portion that makes it difficult to operate the movable portion of the molding die, such as the conventional bus bar described above. There was no overhanging portion in the fixing portion, and it was possible to maintain good moldability of the entire holder.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view showing a first temporary bus bar assembly showing an embodiment of a method of fixing a bus bar to a holder according to the present invention.

FIG. 2 is an explanatory diagram showing a series of bus bar fixing operations in FIG.

FIG. 3 is an enlarged perspective view showing a series of bus bar fixing operations shown in FIG. 2;

FIG. 4 is a perspective view showing an assembled first bus bar temporary assembly of the present invention;

FIG. 5 is a perspective view showing an assembled second temporary bus bar assembly of the present invention.

FIG. 6 is a perspective view showing a preform incorporating the first and second temporary bus bar assemblies of the related art and the present invention.

FIG. 7 is a perspective view showing a connector in which the preforms of the related art and the present invention are incorporated.

FIG. 8 is a perspective view showing a conventional first temporary bus bar assembly.

FIG. 9 is a perspective view showing a second temporary bus bar temporary assembly.

FIG. 10 is an explanatory view showing a series of bus bar fixing operations to a holding groove of a conventional holder.

FIG. 11 is an explanatory view showing a series of operations for fixing a bus bar to a holding groove of a conventional holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st temporary bus-bar assembly 2 2nd temporary bus-bar assembly 3 Connector 4 Preform 5 Busbar 6 Busbar 7 Holding groove 8 Holding groove 9 Holder 10 Holder 13 Dice 14 Insertion hole 15 Punch 16 Widening portion 17 Recess B Busbar width W Groove width at bottom of holding groove

Continued on front page F term (reference) 5E063 BA01 CA03 CB02 CB17 CC10 GA03 HA05 HB16 XA20 5E087 EE14 FF02 FF16 FF19 GG08 GG35 GG37 RR25 RR36 RR47

Claims (2)

[Claims] 1. A method of fixing a plurality of bus bars at predetermined positions in a holding groove of a holder in a process of assembling a temporary assembly of bus bars constituting a part of a connector, wherein the bus bar is fitted into the holding groove. Thereafter, a die is inserted into a through hole provided at a predetermined position at the bottom of the groove of the holding groove, and the bus bar is partially widened by pressing the bus bar with the die and a punch. A method of fixing a bus bar to a holder, wherein the bus bar is fixed by being received in recesses formed in both side walls of a holding groove. 2. A holder for fixing a plurality of bus bars at predetermined positions in a holding groove in a process of assembling a temporary bus bar assembly forming a part of a connector, wherein the holding groove is a fixing position of the bus bar. And a recess formed in the side wall of the holding groove to penetrate an insertion hole at the bottom of the groove and communicate with the insertion hole to make the groove width near the bottom of the groove wider than the width of the bus bar. A holder characterized in that: