JPH0554787A - Electric connecting device for automobile - Google Patents

Abstract

PURPOSE:To ensure the locking of an output side terminal connected to a branched bus bar received and engagingly locked in an insulating case or the branched terminal of the bus bar, and integrate the locking members to reduce the cost. CONSTITUTION:An electric connecting device for automobile has a branched bus bar B in which a plurality of branched terminals 10 and a L-shaped feed terminal 9 are continuously formed, a plurality of output side terminals C connected to the branched terminals, and an insulating case A partitioning and forming a branched bus bar receiving part A1 for and output side terminal receiving part A2 for receiving the branched bus bar and the output side terminals. A connector housing 13 for L-shaped feed terminal installed into the branched bus bar receiving part A1 in such a manner as to be attachable and removable is provided, and lock means 7, 17 engaged with the branched bus bar B when it is laid in a normal receiving position are provided between the housing 13 and the branched bus bar receiving part A1. The housing 13 has a receiving part 13A to a partner connector I connected to the L-shaped feed terminal 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in electrical connection devices such as fuse boxes, relay boxes, junction blocks, etc., which are used for protection of electric circuits of automobiles, signal control and branch connections.

[0002]

2. Description of the Related Art FIG. 5 is an exploded perspective view showing an example of a conventional fuse box, and FIG. 6 is a sectional view of its assembled state.
This fuse box includes a plurality of branch terminals 20 and an L-type power supply terminal 21 from below an insulating case A'opened at the top and bottom.
A branch bus bar B'having a plurality of output terminals C ', a fuse G'having a pair of blade terminals 22, 22 is inserted from above, and a branch terminal 20 is connected via the fuse G'. The terminal C on the outlet side is connected.

An L-type power supply terminal connector housing D'having a receiving portion for a mating connector is inserted into the insulating case A ', or is formed integrally with the insulating case A'. The L-type power supply terminal 21 is accommodated through the opening 28. deep. The output side terminal C'inserted in the insulating case A'is primarily locked by the locking projection 23a of the flexible terminal locking arm 24 engaging with the locking hole 23. that is, the locked state in order to further enhance the electrical contact portion C ₁ 'of the as shown in Figure 6 by inserting a' terminal presser bar E perpendicular to the terminal axis through a hole provided in the side wall of the 'insulation case a The shoulder 25 is engaged to double-lock.
Further, a branch busbar pressing plate F is fixed to the lower opening end of the insulating case A by a flexible lock piece 26 and a lock pawl 27 which constitute a locking means, and the branch busbar B is prevented from coming off.

[0004]

In the conventional fuse box shown in FIGS. 5 and 6, the L-type power supply terminal connector housing D'is previously attached to the insulating case A ', or integrated with the case. Since it is formed in the above, the operator may simply insert the L-type power supply terminal 21 of the branch bus bar B ′ from the opening 28. For this reason, the branch busbar B'may not be inserted to the regular accommodation position and may be overlooked as being half-inserted, so that the fuse G'may not be connected smoothly. In addition to the housing D ', there are three members such as the terminal holding rod E'and the branch busbar holding plate F'that are incorporated into the insulating case A', which increases the cost in terms of manufacturing and assembling man-hours. , For example, the terminal pressing rod E ′
There is a problem in that the user forgets to attach it, and the original purpose of double locking the terminals cannot be achieved.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an electric connecting device for an automobile having a structure capable of accommodating a branch bus bar in a regular accommodation position in an insulating case. .. Another object is to provide an electric connecting apparatus for an automobile having a structure in which members such as the terminal pressing rod E'and the branch busbar pressing plate F'are integrated so that mistakes such as forgetting to attach are less likely to occur and which is useful for cost reduction. It is in.

[0006]

In order to achieve the above-mentioned object, an electric connecting device for an automobile according to the present invention has an L-type power supply terminal and a plurality of branch terminals connected to each other as described in claim 1. A branch busbar, a plurality of output-side terminals connected to the branch terminals, a branch busbar accommodating portion for accommodating the branch busbar and the output-side terminals, and an insulating case in which the output-side terminal accommodating portion is formed In an electric connection device for an automobile, an L-type power feeding terminal connector housing is detachably mounted in the branch busbar accommodating portion, and the branch busbar is provided between the L-type power feeding terminal connector housing and the branch busbar accommodating portion. Is provided with a locking means to be engaged when it is in the regular housing position, and the L-type power supply terminal connector housing is provided with a receiving portion for a mating connector connected to the L-type power supply terminal. Characterized in that the provided parts.

According to a second aspect of the present invention, in the connector housing for the L-type power supply terminal, a branch busbar pressing plate is stretched on one side thereof, and the output side terminal is provided on one side edge of the busbar pressing plate. It is preferable that the terminal disengagement prevention piece that engages with the projection be provided in a comb-like shape.

[0008]

According to the present invention, the L-type power supply terminal housing has a structure in which the branch busbar is locked only in the proper housing position in the branch busbar housing portion of the insulating case. It is possible to prevent the occurrence of a problem such as the inability to connect the fuse due to the.

Further, by providing the branch busbar pressing plate and the terminal removal preventing piece for the output side terminal integrally with the L-type power supply terminal housing, the number of assembling steps and the manufacturing cost can be reduced. Therefore, it is possible to improve the quality of the device without forgetting to attach some conventional members.

[0010]

1 to 4, a fuse box comprises an insulating case A, a branch bus bar B, a plurality of output side terminals C and a terminal fixture H. Case A
Is a rectangular parallelepiped having upper and lower openings, and the central partition wall 1 along the longitudinal direction partitions and forms a branch bus bar accommodating portion A _{1 on one} side and an output side terminal accommodating portion A ₂ on the other side.
Each of the accommodating portions A ₁ and A ₂ is formed by the partition wall 2 so that the branch terminal accommodating chamber 3 for the branch terminal 10 of the branch busbar B and the corresponding output-side terminal accommodating chamber 4 face each other. A housing accommodating portion A ₃ for the L-type power supply terminal connector housing 13 described later is provided in the middle of 4. As shown in FIG. 4, a locking protrusion 5 is provided on the inner wall of the branch terminal accommodating chamber 3, and a flexible terminal locking arm 6 having a locking protrusion 6a is provided in the output side terminal accommodating chamber 4. ing.

The branch bus bar B stands up from the center of the upper edge of the bus bar board 8 and connects the L-type power supply terminal 9 via the horizontal connecting plate portion 9a and the bus bar board 8 on both left and right sides of the terminal 9. Bent piece 8b from the lower edge
A plurality of branch terminals 10 are provided upright to face the substrate 8 via. Each branch terminal 10 is composed of a fixed contact plate 10a rising from the bent piece 8b and an elastic contact plate 10b orthogonal thereto, and a blade terminal (or tab) 18 of the fuse G is inserted between the plates 10a and 10b. ..

The output-side terminal C is formed by connecting an electric contact portion C ₁ to one side of the board portion 12 and a wire connecting portion C ₂ to the other side, and an electric wire W is connected to the connecting portion C ₂ . Electric contact part C
Reference numeral ₁ denotes elastic contact pieces 12b, 1 which are opposed to each other from the standing side walls 12a, 12a on both sides of the substrate portion 12 via curved portions, respectively.
The blade terminal 18 is inserted between the pair of elastic contact pieces 12b and 12b, which has a structure in which the locking holes 12c are provided in the base plate portion 12 while connecting the two 2b.

The above-mentioned constitution of the insulating case A, the branch bus bar B and the output side terminal C is the same as that of the conventional product shown in FIG. 5, but in the present invention, it is locked to the bus bar board 8 of the branch bus bar B. The claw 11 is cut and raised, and a detent 7 for the terminal locking member H is provided on the inner wall of the housing accommodating portion A ₃ of the insulating case A so as to project therefrom.

In this terminal locking tool H, branch busbar pressing plates 14, 14 are stretched on both left and right sides of an L-type power feeding terminal connector housing (hereinafter referred to as power feeding housing) 13 housed in the housing housing portion A _3. At the same time, the terminal disengagement prevention piece 15 that engages with the output-side terminal C is provided at one side edge thereof in a comb-teeth shape.

The power supply housing 13 is formed as a frame body having a closed ceiling 13a, a terminal insertion hole 16 for the L-shaped power supply terminal 9 is formed in the ceiling 13a, and the detent 7 is engaged with the front side surface. A matching lock claw 17 is projected. As shown in FIGS. 2 and 3, the power feeding housing 13 has a wide connector receiving portion 13A for receiving the mating connector I connected to the L-type power feeding terminal 9 and the locking arm 19 and a width. The narrow lock chamber 13B is formed in a left-right asymmetrical shape.

In the above structure, as shown in FIG. 2, by inserting the branch bus bar B into the branch bus bar accommodating portion A ₁ from below the insulating case A, the L-type power supply terminal 9 is inserted into the housing accommodating portion A ₃ . Position it and press it down enough. As a result, the plurality of locking claws 11 of the bus bar board 8 are respectively engaged with the locking projections 5 as shown in FIG. 4, the entire branch bus bar B is locked, and it is stored in the regular storage position. .. Next, the output-side terminals C are inserted into the individual output-side terminal accommodating chambers 4 of the output-side terminal accommodating portion A ₂ , and the engaging protrusions 6a of the terminal engaging arms 6 are inserted into the engaging holes 12c of the electric contact portions C ₁ . Are engaged and locked.

Finally, when the terminal locking device H is mounted, the power feeding housing 13 enters the housing accommodating portion A ₃ , and the L-shaped power feeding terminal 9 is inserted from the terminal insertion hole 16 into the power feeding housing 13. The locking tool H is projected and locked by the engagement of the lock claw 17 and the detent 7 (see FIG. 1). When the terminal locking device H is attached, if the L-type power supply terminal 9 (or the entire branch bus bar B) is not in the regular accommodation position, that is, if it is in the half-inserted state, the power supply housing 1
Since the ceiling portion 13a of No. 3 abuts on the connecting plate portion 9a of the L-type power feeding terminal 9 and pushes the terminal 9 inward, this half insertion state is eliminated. Then, by locking the terminal locking device H,
As shown in FIG. 4, the terminal disconnection prevention piece 15 has an output side terminal C.
Engaged in engagement with the shoulder portion 12d of the electrical contact portion C _1, performs double locking with the terminal locking arm 6, also bent pieces 8b of the lower edge of the branching bus bar B branch busbar presser plate 14 Since it is supported by the above, it is doubly locked together with the locking projection 5.

In the above, an example in which the power feeding housing 13 and the branch busbar pressing plate 15 having the terminal removal preventing piece 15 are integrally formed as the terminal locking tool H has been described. However, the power feeding housing 13 and the branch busbar pressing plate 15 have been described. 15 and 15 may be formed separately. Further, although the insulating case A is formed as an independent fuse box, it may have a structure which can be attached / detached integrally with the case of the relay box or the junction block or in a cassette type.

[0019]

As described above, according to the present invention,
A branch bus bar having an L-shaped power supply terminal and a plurality of branch terminals,
In an electric connection device for an automobile, which is provided with an output side terminal connected to the branch terminal and an insulating case for accommodating the output side terminal, it is possible to eliminate problems such as half-insertion of the branch busbar and defective connection of a fuse based on the branch busbar, and the branch busbar and output side. By positively double-locking the terminals, and by integrally forming a member for double-locking these terminals and the power feeding housing, it is possible to reduce the number of parts and the number of assembling steps and reduce the cost.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a fuse box showing an embodiment of the present invention.

FIG. 2 is a view of the insulating case, the branch bus bar, and the terminal fixture shown in FIG.

3 is a partially cutaway perspective view showing an assembled state of the fuse box of FIG. 1. FIG.

FIG. 4 is a vertical sectional view of the fuse box of FIG. 1 in an assembled state.

FIG. 5 is an exploded perspective view showing an example of a conventional fuse box.

6 is a vertical cross-sectional view of the fuse box of FIG. 5 in an assembled state.

[Explanation of symbols] A Insulation case A ₁ Branch bus bar accommodating section A ₂ Output side terminal accommodating section A ₃ Housing accommodating section B Branch bus bar C Output side terminal H Terminal fixing tool 3 Branch terminal accommodating room 4 Output side terminal accommodating room 5 Stop projection 6 Terminal locking arm 7 Detent 9 L-type power supply terminal 10 Branch terminal 11 Locking claw 13 L-type power supply terminal connector housing 13A Connector receiving part 14 Branch busbar retainer plate 15 Terminal removal prevention piece 17 Lock claw

Claims (2)

[Claims] 1. A branch bus bar in which an L-type power supply terminal and a plurality of branch terminals are connected to each other, a plurality of output side terminals connected to the branch terminals, and a branch accommodating the branch bus bars and the output side terminals. An electrical connection device for an automobile, comprising: an insulating case in which a bus bar accommodating portion and an output-side terminal accommodating portion are formed by partitioning, wherein an L-type power feeding terminal connector housing detachably mounted in the branch bus bar accommodating portion is provided. Locking means for engaging the branch bus bar when the branch bus bar is in the regular storage position is provided between the connector housing for the type power supply terminal and the branch bus bar accommodating portion, and the L type power supply terminal connector housing is provided with the L type power supply. An electric connecting device for an automobile, characterized in that a receiving portion for a counterpart connector connected to the terminal is provided. 2. A branch busbar pressing plate is stretched on one side of the connector housing for L-type power supply terminal according to claim 1, and
An electric connection device for an automobile, comprising: a comb-teeth-shaped protruding portion of a terminal disconnection preventing piece that engages with the output side terminal, which is provided on one side edge of the bus bar pressing plate.