JPH11345669A - Molding having electrically connecting conductor part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably prevent a base part from being cracked when bending an electrically connecting conductor part. SOLUTION: This molding 21 having an electrically connecting conductor (bus bar) 23 is structured by insert-molding or press-fitting a part of the electrically connecting conductor 23 formed from a conductive metal material to a base part 22 molded from a synthetic resin material. In this case, a jig inserting groove 29 for a bending jig to expose the electrically connecting conductor 23 insert-molded or press-fitted to one side wall part is formed in the base part 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded article having an electric connection conductor, and more particularly to a molded article improved in consideration of bending of the electric connection conductor.

[0002]

2. Description of the Related Art A conventional compact will be described with reference to FIGS. FIG. 8 is a plan view of the molded body, and FIG. 9 is a sectional view taken along line BB of FIG. 8 and 9,
A molded body 1 includes a base 2 injection-molded with a synthetic resin,
A bus bar 3, 3 'as an electrical connection conductor portion insert-molded in the base portion 2 and nuts 4, 4' also embedded in the base portion 2 are provided. A partition 5 is provided to separate the bus bar 3 and the nut 4 from the bus bar 3 'and the nut 4'.

The busbars 3 and 3 'have through holes 3a and 3a' (see FIG. 9; only one is shown, the same applies to the following description) in the middle of the portion protruding from the base portion 2.
Are bent from the base surface 2a of the
a 'and the screw holes 4a, 4a' of the nuts 4, 4 'are arranged vertically.

Then, the through holes 3a, 3
Connection terminals and the like (not shown) are fixed to the a ′ and the screw holes 4a and 4a ′ by screws, and the molded body 1 is electrically connected to a load (not shown).

[0005]

In the above prior art, as shown in FIG. 9, a bus bar 3 (also a bus bar 3 ') is bent from the base surface 2a of the base portion 2, and
It is electrically connected to a load (not shown).

However, when the bus bar 3 is bent, stress is applied to the edge 2b of the base 2 where the base surface 2a and the bus bar 3 intersect, and the edge 2b is cracked or chipped off. May occur.

In order to prevent such cracks and the like, the edge portion 2b is bent into a curved portion 2 as shown in FIG.
However, it is necessary to provide an acute angle portion in a molding die for molding the curved portion 2c, which causes problems such as a decrease in mold strength and damage to the bus bar 3 during mold clamping. Will be invited.

The present invention, in order to solve the above-mentioned problems, provides a molded article having an electric connection conductor which can surely prevent a crack or the like in a base portion when the electric connection conductor is bent. That is the task.

[0009]

According to a first aspect of the present invention, there is provided a molded article having an electrical connection conductor portion according to the present invention, comprising:
In a molded body formed by insert molding or press-fitting a part of an electrical connection conductor formed from a conductive metal material, the insert-molded or press-fitted electrical connection conductor is formed on one side surface of the base. A jig insertion groove for an exposed bending jig is formed.

[0010] In the above structure, the molded body having the electric connection conductor is provided on a base formed of a synthetic resin material.
A bending process that insert-molds or press-fits a part of an electrical connection conductor formed from a conductive metal material, and exposes the insert-molded or press-fitted electrical connection conductor to one side wall surface of the base. A jig insertion groove for the tool is formed. When the electrical connection conductor is bent in a desired direction after forming the molded body in this manner, first, a bending jig that fits the bending position of the electrical connection conductor is inserted into the jig insertion groove. Then, the process proceeds to the step of bending the electrical connection conductor. At this time, if the bending jig is formed of a material having sufficient rigidity with respect to the base portion, the bending jig can be bent by the bending jig when the electric connection conductor is bent. Even if such stress is generated, no crack is generated in the bending jig, and naturally no crack is generated in the base portion. The bending jig is pulled out of the jig insertion groove after bending the electrical connection conductor, and is repeatedly used for bending the electrical connection conductor of the next molded article. Therefore,
By forming the jig insertion groove in the base portion, cracks and the like of the base portion which occur when the electrical connection conductor portion is bent can be reliably prevented, and the reliability of the molded body can be significantly improved. it can.

According to a second aspect of the present invention, there is provided a molded article having an electrical connection conductor according to the present invention, wherein the electrically connected conductor is provided with the electrical connection conductor. It is characterized in that a concave portion is provided at a bending position of another portion with respect to the part of the connection conductor portion.

[0012] In the above configuration, the electrical connection conductor portion is
The electrical connection conductor has a concave portion at a bending position of another portion with respect to the portion. As described above, since the electrical connection conductor has the concave portion, the electrical connection conductor at the bending position becomes thinner, and it becomes very easy to bend the electrical connection conductor. Then, even if a force (stress) applied to bending is transmitted to the base portion via the bending jig, the force is sufficiently small with respect to a force that causes a crack or the like. Therefore, cracks and the like in the base portion can be reliably prevented, and workability can be improved.

According to a third aspect of the present invention, there is provided a molded article having an electrical connection conductor according to the first or second aspect of the present invention, wherein the jig insertion groove is provided in the molded article having the electrical connection conductor. At least a part of the other side wall surface facing the one side wall surface is characterized by being constituted by a metal member embedded in the base portion.

In the above configuration, at least a part of the other side wall surface of the jig insertion groove facing the one side wall surface is formed of a metal member embedded in the base. When the jig insertion groove is configured in this manner, the metal, that is, the electrical connection conductor and the metal member are exposed on the wall surface in the bending direction of the electrical connection conductor, so that the bending jig is not exposed to the metal. It will be used in a sandwiched state. In other words, since the bending jig is used by being inserted between rigid bodies, the position accuracy of the bending jig is high even during the bending process of the electrical connection conductor, and accordingly, the electrical connection conductor is The accuracy of the bending position is also improved. Therefore, in addition to the above effects,
The bending position accuracy of the electrical connection conductor can be improved.

According to a fourth aspect of the present invention, there is provided a molded article having an electrical connection conductor portion according to the present invention, wherein the base portion is a mating member. The connector housing engages with the housing of the side connector.

In the above configuration, since the base portion is a connector housing that engages with the housing of the mating connector, cracks are not caused even when the electrical connection conductor portion as a terminal inserted or press-fitted into the connector housing is bent. And the like can be reliably prevented. In addition, as described above, the electrical connection conductor can be easily bent, and the bending position accuracy of the electrical connection conductor can be improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing one embodiment of a molded article having an electric connection conductor according to the present invention.
2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is an enlarged cross-sectional view of a main part of FIG. 2, and FIG. 4 is an enlarged cross-sectional view of a main part for explaining a bus bar bending process based on FIG. Is shown. FIG. 5 is a cross-sectional view of a connector showing another embodiment of a molded article having an electric connection conductor according to the present invention.

In FIGS. 1 and 2, reference numeral 21 denotes a molded body, and the molded body 21 is the molded body 1 described in the conventional example.
Similarly to (see FIG. 8 and FIG. 9), a base portion 22 injection-molded with a synthetic resin, and a method of press-fitting the base portion 22 after the base portion 22 is formed by insert molding (not limited to insert molding). Bus bars 23, 23 'as electrical connection conductors, and the base 22
And nuts 24 and 24 '(corresponding to the metal members described in the claims) having a known structure embedded in the nut. A busbar 23 and a nut 24, and a semicylindrical partition wall 25 for separating the busbar 23 ′ and the nut 24 ′ are provided at the center of the base 22.

The base portion 22 includes a substantially cylindrical first base portion 26 and a rectangular second base portion 27 serving as a cradle for the first base portion 26. First
The jig insertion grooves 28 and 28 'and the jig insertion grooves 29 and 2 are cut out of the base surface 26a and the side surface 26b of the base 26, respectively.
9 'is formed (the jig insertion grooves 28, 28' can be arbitrarily provided).

The jig insertion grooves 28, 28 'are symmetrical with respect to the partition wall 25, and one side wall surface of each jig insertion groove 28, 28' has a bus bar surface outside the bus bars 23 and 23 '. Is exposed. Also, the jig insertion grooves 29, 29 'are the same as the jig insertion grooves 28, 28', are symmetrical with respect to the partition wall 25, and have one side wall surface of each jig insertion groove 29, 29 '. , The bus bar surfaces on the inner side of the bus bars 23 and 23 'are exposed.

Also, as shown in FIG.
8, 28 'and the bottom walls 28 of the jig insertion grooves 29, 29'
a, 28'a and 29a, 29'a (not shown in FIG. 3 because the bottom walls 28'a and 29'a are symmetrical,
Further, the bus bar 23 'and the jig insertion groove 2 described below are used.
8 'and 29' are shown in FIG. 1).
And 23'b tapered portions 28b, 28'b
And 29b, 29'b (the tapered portion 28 'in FIG. 3).
b and 29'b are not shown because they are symmetrical).

The tapered portions 28b, 28'b and 29b, 2
9'b shows that when the bus bars 23 and 23 'are insert-molded into the base 22, the molding die and the bus bars 23 and 2
3 'is provided in consideration of mold clamping. Therefore, in order to improve the durability of the molding die, a part of the molding die is provided with a taper, and the jig insertion grooves 28, 28 ', 29, 29' are tapered portions 28b, 28'b and 29b, 29 '. It can be said that it is preferable to form b.

The bus bars 23 and 23 'are formed by stamping a conductive thin metal plate by press working (see FIGS. 1 and 2). When the nut 2
4 and 24 ', the through holes 23a and 23'a (see FIG. 2; only one is shown, the same applies in the following description) having a size corresponding to the screw holes 24a and 24'a (see FIG. 1);
Concave portions 23b, 23'b depressed toward the bending side of 3 and 23 '
(See FIG. 2, only one is shown, the same applies to the following description)
Are formed. Further, a circuit having a desired pattern is formed on a portion (not shown) extending from the side on which the insert molding is performed on the base portion 22.

The recesses 23b and 23'b are formed at positions (see FIGS. 2 and 3) corresponding to the base surface 26a of the first base 26 in the present embodiment, but are limited to these positions. 2 and 3 are not set by the bending positions of the bus bars 23 and 23 '.
Not only the depression shape as shown in FIG. The recesses 23b, 2
By forming 3'b, bus bars 23 and 23 '
Can be easily bent with a small force.
Further, the recesses 23b and 23'b are
Since the bus bars 23 and 23 'are formed at positions sufficiently distant from the bottom walls 29a and 29'a of the 9', resin does not flow into the recesses 23b and 23'b during insert molding of the bus bars 23 and 23 '. No (the resin would flow in if provided on the molding 1 of the conventional example).

FIG. 3 shows the bus bars 23 and 23 '.
Of the bending jigs 30 and 30 '(only one is shown due to its symmetrical shape, the same applies in the following description) used to bend the nut toward the nuts 24 and 24'. The bending jigs 30 and 30 'have a width (width in the left-right direction in FIG. 3) to be inserted into the jig insertion grooves 29 and 29' almost without backlash, and have bottom walls 29a and 29 '. A has a height (a height in the vertical direction in FIG. 3) corresponding to a bending position from a to the concave portions 23b and 23'b, and is formed in a rod shape (not shown). In addition, bending jig 3
In the present embodiment, 0 and 30 ′ are manufactured from a metal column material (a material having sufficient rigidity than the base portion 22 can be applied, but it is preferable to use a material having the same hardness as the bus bars 23 and 23 ′). ).

The step of bending the bus bars 23 and 23 'of the molded body 21 toward the nuts 24 and 24' in the above structure will be described with reference to FIGS.

In FIG. 3, first, jig insertion grooves 29, 2
The bending jigs 30 and 30 ′ are attached to 9 ′ in the direction of the arrow P (they may be inserted from the side surface 26 b of the first base 26). Next, as shown in FIG. 4, the bus bars 23 and 23 'are bent in the direction of arrow Q. Bus bars 23 and 2
Since the concave portions 23b and 23'b are formed in 3 ',
As described above, the bus bars 23 and 2 can be
A 3 'bending step is performed. At this time, bending jig 3
Since the bus bars 23 and 23 'are bent via the 0 and 30', no cracks or the like occur in the base portion 22. Further, since the folding jigs 30 and 30 'are used in a state of being sandwiched between the bus bars 23 and 23' and the nuts 24 and 24 ', the positional accuracy of the folding jigs 30 and 30' is high. Accordingly, the bending position accuracy of the bus bars 23 and 23 'is also improved.

Next, another example of the bus bars 23 and 23 'will be described with reference to FIGS. The same components as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted. In addition, in order to attach a reference numeral 23 ″ to a bus bar as another example below, the reference numeral of the molded body is set to 21 ′.

In FIG. 5, similarly to the above-mentioned molded body 21, a molded body 21 'has a structure in which a bus bar 23 "as an electric connection conductor is insert-molded (press-fitting is also possible) on a base 22. The bus bar 23 "has a recess 23"
b, 23 "b. The bus bar 23" is formed.
Is also formed with the same through-hole 23 ″ a as the above-described through-hole 23a.

The recesses 23 "b, 23" b are
3 "is formed by punching the outer and inner bus bar surfaces when press-working the 3", and is disposed at the same position as the recess 23b of the bus bar 23.

In this embodiment, the concave portions 23 ″ b, 2
The thickness between 3 ″ b is the same as the thickness at the position of the recess 23b of the bus bar 23. That is, the recess 23 ″.
The depth of the recess b is formed to be shallower than the depth of the recess 23b, so that the same strength as the bus bar 23 can be maintained.

As shown in FIG. 6, when the bus bar 23 "having the above structure is bent in the direction of the arrow Q using the bending jig 30, the recess 23" b, 23 "is formed in the bus bar 23".
Since the b is formed, the bus bar 23 ″ can be bent with a very small force.

Further, since the bend R (radius by bending) of the portion indicated by the arrow R becomes smaller than the bend R of the bus bar 23 at the same position, the stretch length at the time of bending the portion becomes shorter. Of the plating applied to the bus bar 23 ″ (the bus bar 2).
The effect is particularly remarkable when the thickness of 3 ″ is large.)

Further, as described above, since the stretched length is shortened, the stress at the time of bending generated in the above portion can be reduced.

Next, another embodiment of the molded article having the electrical connection conductor of the present invention will be described with reference to FIG. In FIG. 7, a connector 31 as a molded body is
A connector housing 32 made of a synthetic resin (corresponding to a base portion described in the claims) and a plurality of insert moldings (may be press-fitted) in the connector housing 32 (four are shown in FIG. 7). And a male terminal 33 formed in a male tab shape as an electrical connection conductor portion.

The connector housing 32 is formed in a rectangular box shape, and a base wall 32a of the connector housing 32 is formed.
The jig insertion groove 34 is formed to fill the width of the base wall 32a in the width direction. Further, the plurality of male terminals 33 are each formed with a concave portion 35 at a terminal bending position.

The position where the jig insertion groove 34 is formed can be appropriately changed according to the form of the connector, and each concave portion 35 is press-formed into an appropriate shape similarly to the above-mentioned concave portions 23b and 23'b. Can do so.

The bending jig 36 has a width that can be inserted into the jig insertion groove 34 with almost no play, and has a height corresponding to the bending position of the plurality of male terminals 33. Manufactured from metal pillars as before.

The bending step is omitted since it is performed in the same manner as the above-mentioned molded body 21. However, the bending jig 36 is pulled out after the plurality of male terminals 33 have been bent, and the next connector is cured. It is designed to be inserted into the tool insertion groove.

The connector 31 described above has the same effect as the molded body 21 described above. Further, the molded body is not limited to the above-described example, and can be appropriately used for a body having a base portion and an electrical connection conductor portion (for example, an electrical connection box mounted on a vehicle or the like). Is included). Furthermore, the electrical connection conductor portion includes a round pin and a square pin-shaped terminal in addition to the bus bar and the male tab-shaped terminal.

[0041]

As described above, according to the first aspect of the present invention, a molded body having an electrical connection conductor is provided on a base formed of a synthetic resin material by a conductive metal material. A jig for a bending jig which is formed by insert-molding or press-fitting a part of the electrical connection conductor formed from the base member and exposing the insert-molded or press-fitted electrical connection conductor to one side wall surface of the base. A tool insertion groove is formed. When the electrical connection conductor is bent in a desired direction after forming the molded body in this manner, first, a bending jig that fits the bending position of the electrical connection conductor is inserted into the jig insertion groove. Then, the process proceeds to the step of bending the electrical connection conductor. At this time, if the bending jig is formed of a material having sufficient rigidity with respect to the base portion, the bending jig can be bent by the bending jig when the electric connection conductor is bent. Even if such stress is generated, no crack is generated in the bending jig, and naturally no crack is generated in the base portion.
The bending jig is pulled out of the jig insertion groove after bending the electrical connection conductor, and is repeatedly used for bending the electrical connection conductor of the next molded article. Therefore, by forming the jig insertion groove in the base portion, it is possible to reliably prevent cracks and the like of the base portion caused when the electrical connection conductor portion is bent, and to further improve the reliability of the molded body. It has the effect of being able to do so.

According to the second aspect of the present invention, the electrical connection conductor has a concave portion at a bending position of another portion with respect to the part of the electrical connection conductor. As described above, since the electrical connection conductor has the concave portion, the electrical connection conductor at the bending position becomes thinner, and it becomes very easy to bend the electrical connection conductor.
Then, even if a force (stress) applied to bending is transmitted to the base portion via the bending jig, the force is sufficiently small with respect to a force that causes a crack or the like. Therefore, it is possible to reliably prevent cracks and the like in the base portion and to improve the workability.

According to the third aspect of the present invention, at least a part of the other side wall surface of the jig insertion groove facing the one side wall surface is formed of a metal member embedded in the base portion. When the jig insertion groove is configured in this manner, the metal, that is, the electrical connection conductor and the metal member are exposed on the wall surface in the bending direction of the electrical connection conductor, so that the bending jig is not exposed to the metal. It will be used in a sandwiched state.
In other words, since the bending jig is used by being inserted between rigid bodies, the position accuracy of the bending jig is high even during the bending process of the electrical connection conductor, and accordingly, the electrical connection conductor is The accuracy of the bending position is also improved. Therefore, in addition to the above-described effects, there is an effect that the bending position accuracy of the electrical connection conductor can be improved.

According to the fourth aspect of the present invention, since the base portion is a connector housing that engages with the housing of the mating connector, the electrical connection as a terminal that is insert-molded or press-fitted into the connector housing. When the conductor is bent, an effect that cracks and the like can be reliably prevented can be obtained. In addition, as described above, it is possible to easily bend the electrical connection conductor, and it is also possible to improve the bending position accuracy of the electrical connection conductor.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a molded article having an electric connection conductor according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part for explaining a bus bar bending step based on FIG. 3;

FIG. 5 is an enlarged sectional view of a main part of a molded body showing another example of a bus bar.

FIG. 6 is an enlarged sectional view of a main part for explaining a bus bar bending process based on FIG. 5;

FIG. 7 is a sectional view of a connector showing another embodiment of a molded article having an electric connection conductor portion of the present invention.

FIG. 8 is a plan view of a conventional molded body having an electrical connection conductor.

FIG. 9 is a sectional view taken along line BB of FIG.

FIG. 10 is an enlarged sectional view of a main part in which the edge part of FIG. 9 is changed to a curved part.

[Explanation of symbols]

Reference Signs List 21 molded body 22 base 23, 23 'busbar (electrical connection conductor) 23 "busbar (electrical connection conductor) 23b, 23'b recess 23" b recess 24, 24' nut (metal member) 28, 28 ', 29, 29' Jig insertion groove 30, 30 'Bending jig 31 Connector (molded body) 32 Connector housing (base part) 33 Male terminal (electrical connection conductor part) 34 Jig insertion groove 35 Recess 36 Fold Music jig

Claims (4)

[Claims] 1. A base portion formed of a synthetic resin material,
In a molded body formed by insert molding or press-fitting a part of an electrical connection conductor formed from a conductive metal material, the insert-molded or press-fitted electrical connection conductor is formed on one side surface of the base. A molded article having an electrical connection conductor, wherein a jig insertion groove for an exposed bending jig is formed. 2. The molded product having the electrical connection conductor according to claim 1, wherein the electrical connection conductor has a concave portion at a bending position of another portion with respect to the part of the electrical connection conductor. A molded article having an electrical connection conductor portion, characterized in that: 3. The molded article having the electrical connection conductor according to claim 1, wherein at least a part of the other side wall surface of the jig insertion groove facing the one side wall surface is the base. A molded article having an electrical connection conductor portion, comprising a metal member embedded in the portion. 4. The molded product having an electrical connection conductor according to claim 1, wherein the base is a connector housing that engages with a housing of a mating connector. A molded article having an electrical connection conductor.