JP2000069648A - Fastening structure for joint absorbing bus-bar in electrical connection box with joint connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastening structure whereby in an electrical connection box with a joint connector joint absorbing bus-bars can be fastened surely thereto. SOLUTION: A relay box 21 has a joint connector, having a cavity formed on one wall of a casing 23 and having joint absorbing bus-bars 31. A fastening structure for the joint absorbing bus-bars 31 adopts a structure where between the cavity and a CU 27 to be mounted on the casing 23, there are formed inserting mount portions 32 of the joint absorbing bus-bars 31, the end portions of whose board portions 31a can be made capable of bringing into contact with the CU 27, to fasten the joint absorbing bus-bars 31 to the joint connector by the inserting mount portions 32 and the CU 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint absorber using mounting parts mounted on an electric junction box when fixing the joint absorbing busbar of an electric junction box provided with a joint connector having a joint absorbing busbar. The present invention relates to a fixing structure for a bus bar.

[0002]

2. Description of the Related Art Reference numeral 1 in FIG. 4 indicates an electric connection box with a joint connector conventionally used. The electric connection box 1 includes a main cover 2 and an under cover (not shown) in which a wiring board 3 (see FIG. 5) is accommodated. The main cover 2 includes a fuse cavity 5 for a plurality of fuses 4 and a wire harness (not shown). And a plurality of connector cavities 6 for connecting connectors provided in the terminal.

Further, the main cover 2 has a joint connector 9 comprising joint absorbing bus bars 7 and 7 and a cavity 8 for short-circuiting a plurality of electric wires or taking out a plurality of load wirings from one power supply. Is provided.

The bus bars 7, 7 for absorbing joints are shown in FIG.
As shown in FIG.
1 are connected in a comb shape at predetermined intervals, and the main cover 2
Bottom wall 12 of cavity 8 formed inside and outside
The plurality of male terminals 11 are inserted from the inside of the main cover 2 to the outside so that the plurality of male terminals 11 project outward from the terminal insertion portion 13 (see FIG. 6).

On the other hand, wiring board 3 has a plurality of bus bars 14 having a desired pattern (only one is shown in FIG. 5).
And insulating substrates 15, 15 ′ are overlapped with each other, and ribs 16, 16 for supporting the joint absorbing busbars 7, 7 are provided below the cavity 8.
Are provided along the bus bar 14.

When the bus bars 7 for absorbing the joints are inserted into the cavities 8 and the main cover 2 is engaged with an under cover (not shown), the board portions 10 of the bus bars 7 for absorbing the joints are As shown in FIG. 6, the joint absorbing bus bars 7 are supported by the ribs 16 of the wiring board 3 to prevent the joint absorbing bus bars 7 from falling off.

[0007]

In the above prior art, as shown in FIG. 6, the bus bars 7, 7 for absorbing the joints are inserted from the inside of the main cover 2 to the outside, and the joint absorbing bus bars 7, 7 are attached. It has a fixed structure in which the bus bars 7 are supported by the ribs 16 of the wiring board 3. When the connector 17 to be connected to the joint connector 9 is connected to the joint connector 9, the female terminals (not shown) of the connector 17 to be connected are connected to the ends of the plurality of male terminals 11 of the bus bars 7 for joint absorption by arrows P. Will be applied.

[0008] However, the compression force is too large.
In this case, each of the substrate portions 10 and 10 crushes the ribs 16 and 16 and falls off. In the worst case, there is a risk of contact with the bus bar 14.

As a countermeasure against this, the terminal insertion portion 1 described above is used.
3 is formed in the bottom wall 12 of the cavity 8 in the opposite direction, that is, from the outside to the inside of the main cover 2 so as to have a concave bottomed terminal insertion portion. Bus bar 7 for joint absorption by providing a stopping means,
A fixing structure that press-fits 7 from the outside of the main cover 2 is considered.

[0010] With such a fixing structure, the bottom of the terminal insertion portion serves as a stopper, and the terminal locking means fixes the joint absorbing bus bars 7, 7, thereby causing the above-described situation. There is no.

However, when the connected connector is removed with a very large force, that is, vigorously, the terminal locking means loses the detaching force, and the joint absorbing bus bar comes off from the terminal insertion portion. there is a possibility.

[0012] Therefore, from the above, it can be said that there is room for improvement with respect to the fixing structure of the joint absorbing bus bar.

In view of the above-mentioned circumstances, an object of the present invention is to provide a fixing structure capable of securely fixing a bus bar for absorbing a joint in an electric connection box with a joint connector.

[0014]

According to a first aspect of the present invention, there is provided a fixing structure of a joint absorbing bus bar in an electric connection box with a joint connector according to the present invention, wherein a plurality of terminals are connected to one side of a board portion. A fixing structure for the joint absorbing bus bar of the electric connection box, comprising a joint connector having a joint connector having a joint absorption bus bar formed on a wall of a casing constituting the electric connection box, Insertion of the joint absorbing bus bar between the cavity and a mounting component mounted on the other wall of the casing opposite to the one wall so that the other side of the substrate portion with respect to the one side can contact the mounting component. A fitting portion is formed, and the joint absorbing busbar is fixed by the insertion portion and the mounting component.

In the above structure, the joint absorbing busbar fixing structure includes a joint absorbing busbar in which a plurality of terminals are formed on one side of the board portion, and a cavity formed in one wall of a casing constituting the electric connection box. A fixing structure for a joint absorbing bus bar of an electric connection box having a joint connector having a joint connector having a joint connector having a joint connector having a joint connector having a joint connector having: Form the insertion part of the bus bar for joint absorption that the other side can contact the mounted parts,
A structure is employed in which the joint absorbing busbar is fixed between the insertion portion and the mounted components. When such a fixing structure is adopted and the mating connector is fitted to the joint connector, a force from the mating connector is applied to the terminal of the joint absorbing bus bar, and the force is received by the insertion portion and the mounted component. . In particular, the movement of the joint absorbing bus bar is restricted by the mounted components, and the connection between the mating connector and the joint absorbing bus bar is normally performed. Also, before the mounted component is mounted on the casing, the mating connector is fitted into the joint connector, and even if the joint absorbing bus bar is moved from a predetermined position of the insertion portion by the above-mentioned force, it is mounted thereafter. Since the other side of the board part of the joint absorbing bus bar comes into contact with the mounted component, the joint absorbing bus bar is pushed back to the predetermined position, and the connection between the mating connector and the joint absorbing bus bar is performed as described above. It will be performed normally. Therefore, it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

According to a second aspect of the present invention, the fixing structure of the joint absorbing bus bar in the electric connection box with the joint connector according to the present invention is the electric connector box with the joint connector fixing structure of the first embodiment. The insertion portion may be configured such that a bottom wall of the cavity serves as a stopper for the one side when the joint absorbing busbar is inserted.

In the above configuration, the insertion portion is configured such that the bottom wall of the cavity serves as a stopper for the one side when the joint absorbing bus bar is inserted. With this configuration, even if the mating connector fitted to the joint connector is removed with great force, the one side of the bus bar for joint absorption will be restricted from moving by the bottom wall, and will come off. It will not be lost. Therefore, it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

According to a third aspect of the present invention, there is provided a fixing structure of a bus bar for joint absorption in an electric connection box with a joint connector according to the present invention. In the structure, the insertion portion is formed integrally with the other wall of the casing.

In the above configuration, the insertion portion is formed integrally with the other wall of the casing. Since the mounted component is mounted on the casing as described above, forming the insertion portion integrally with the casing prevents displacement of the mounted component from the mounted component. Therefore, it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

According to a fourth aspect of the present invention, there is provided a fixing structure of a bus bar for joint absorption in an electric connection box with a joint connector according to the present invention. In the fixing structure, the mounting component is provided with a lock unit that restricts movement in the same direction as a mating direction of a mating connector mating with the joint connector.

In the above configuration, the mounting component is provided with a lock means for restricting movement in the same direction as the mating direction of the mating connector mating with the joint connector. Therefore, since the force from the mating connector received through the joint absorbing bus bar can be further countered, the joint absorbing bus bar in the electric connection box with the joint connector is securely fixed. A resulting securing structure can be provided.

According to a fifth aspect of the present invention, there is provided a fixing structure of a bus bar for joint absorption in an electric connection box with a joint connector according to the present invention. In the fixing structure, the mounting component is an electronic unit having a plane that at least contacts the other side of the joint absorbing bus bar.

In the above configuration, the mounted component is an electronic unit having a plane that at least contacts the other side of the joint absorbing bus bar. The electronic unit generally occupies a large portion of the electric junction box, and has a sufficiently large contact surface with the casing as compared with other mounted components. However, since most of the abutting surfaces only abut the casing, making the joint absorbing busbar abut on the abutting surface means effectively using the unused parts. become. Further, the own weight of the electronic unit is used for fixing the joint absorbing busbar. Therefore, it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

[0024]

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 perspective view of a relay box showing one embodiment of a joint absorbing busbar fixing structure in an electric connection box with a joint connector of the present invention. FIG. 2 is a cross-sectional view of the insertion portion in FIG. As described above, as an example of the electric connection box with a joint connector, a relay box having a joint connector (not limited to this) is used, and a fixing structure of the joint absorbing bus bar in this relay box will be described below. To

First, the configuration will be described with reference to FIG. Reference numeral 21 indicates a relay box mounted in the engine room of the vehicle.
Is provided with a box body 22 and upper and lower covers (not shown).

The box main body 22 has a casing 23 made of an insulating synthetic resin material. An upper wall 23a of the casing 23 (as viewed from the up and down direction when the reference numeral given in FIG. The upper side is referred to as an upper wall 23a, which corresponds to the other wall described in the claims.) The cavity 24 for a relay (not shown) and the cavity 25 for a fuse (not shown) , And a plurality of cavities 26 for fusible links (not shown).

A control box housing a plurality of circuits (not shown) in a substantially rectangular parallelepiped casing 27a is provided on the front side of the upper wall 23a with respect to the back side.
A mounting portion 28 for mounting the unit 27 (hereinafter simply abbreviated as CU, and corresponding to a mounting component and an electronic unit described in the claims) is formed.

Further, a locking arm 29a (see FIG. 3) is provided on a lower wall 23b (corresponding to one wall described in the claims) of the casing 23 opposite to the mounting portion 28.
A cavity 30 (see FIG. 2) for fitting a housing 29b of a connector 29 having a mating side (see FIG. 2) is formed.

Since the CU 27 has a known configuration, a detailed description thereof will be omitted. However, engaging portions 27b, 27b (FIG. 1) formed on both side walls in the longitudinal direction of the casing 27a are formed as shown in FIG. Only one side is shown, which is equivalent to a lock means described in the claims. The lower wall 27c (the lower side with respect to the up-down direction when the reference numeral shown in FIG. In addition, connectors 27d, 27d for making an electrical connection with the mounting portion 28 are formed in a flat shape.

The lower part 27 of the CU 27 is mounted on the mounting part 28.
c and the connectors 27d, 2d,
Connectors 28b, 28b into which 7d is inserted and held are formed, and between the connectors 28b, 28b are joint absorbing busbars 31, 31 for making electrical connection with terminals (not shown) of the connector 29. Are formed in two rows.

The mounting portion 28 is provided with substantially claw-shaped locking projections 28c, 28c for engaging with the engaging portions 27b, 27b (only one of which is shown) of the CU 27 in the concave portions 28d, 28d.

The joint absorbing bus bar 31 is manufactured by press working from a good conductive metal plate, and has a substantially rectangular substrate portion 31a in plan view.
A plurality (three in FIG. 1, not limited to this number) of male terminals 31b formed on one side of the substrate part 31a in a substantially tab shape in a plan view (described in the claims). Are formed in a comb shape at predetermined intervals.

The joint connector 3 includes the joint absorbing bus bar 31 and the cavity 30 (see FIG. 2).
3 (see FIG. 3).

The insertion portion 32 is, as shown in FIG.
The joint absorption bus bar 31 includes a board accommodating portion 32a into which the board portion 31a is inserted, and three terminal insertion holes 32b into which the male terminals 31b are respectively inserted. The upper wall 23a and the cavity 30, in other words, an insertion portion 32 is provided at a position between the CU 27 (see FIG. 1) and the cavity 30.

The insertion portion 32 is formed so that the joint absorbing bus bar 31 can be inserted from the upper wall 23a side.
The substrate accommodating portion 32a is formed by opening the upper wall 23a (it may be formed separately from the upper wall 23a), and the bottom wall 30a of the cavity 30 functions as a stopper for the one side of the substrate portion 31a. Is to be fulfilled.

Incidentally, reference numeral 34 shown in FIG. 1 indicates an engaging portion to the upper cover (not shown), and reference numeral 35 indicates an engaging portion to the lower cover (not shown). Furthermore, reference numerals 36 and 37 denote mounting flanges for mounting in an engine room (not shown).

In the above structure, as shown in FIG. 3, the joint absorbing bus bar 31 is fixed to the insertion section 32 by press-fitting the joint absorbing bus bar 31 to form the joint connector 33 and the board section 31a. The other side opposite to the one side can be brought into contact with the lower wall 27c of the CU 27 to restrict the movement in the same direction as the fitting direction of the connector 29, thereby fixing the joint absorbing bus bar 31.

Hereinafter, the operation will be described with reference to FIG. First, when the connector 29 is fitted to the joint connector 33, a force from the connector 29 is applied to the male terminal 31 b of the joint absorbing bus bar 31, and the force is received by the insertion portion 32 and the CU 27. And especially CU
The movement of the joint-absorbing bus bar 31 is restricted by the joint 27, and a normal connection between the connector 29 and the joint-absorbing bus bar 31 is performed.

Before the CU 27 is mounted on the casing 23 (see FIG. 1), the connector 29 is fitted into the joint connector 33 and the joint absorbing bus bar 31 is temporarily provided.
Is moved from a predetermined position of the insertion portion 32 by the force, even if the lower wall 27 of the CU 27 to be mounted thereafter is moved.
Since the other side of the board portion 31a of the bus bar 31 for joint absorption comes into contact with c, the bus bar 31 for joint absorption is pushed back to the predetermined position, and the normal connection between the connector 29 and the bus bar 31 for joint absorption is performed as described above. The connection is made.

As described above with reference to FIGS. 1 to 3, it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar 31.

The bottom wall 30a of the cavity 30 serves as a stopper for the one side when the bus bar 31 for absorbing a joint is inserted.
Even if the connector 29 fitted into the connector 29 is removed vigorously, the one side of the joint absorbing bus bar 31 is restricted from moving by the bottom wall 30a and does not come off.

Further, the insertion portion 32 is connected to the casing 23.
The joint absorbing bus bar 31 can be always fixed in a stable state without causing a positional shift with the CU 27.

The CU 27 is provided with engaging portions 27b, 27b
(See FIG. 1, only one is shown.) Since it is firmly fixed by the engagement, the force from the connector 29 received via the joint absorbing bus bar 31 can be further opposed, and the CU 27 moves. It won't.

Furthermore, the abutting of the joint absorbing bus bar 31 against the CU 27 effectively utilizes the lower wall 27c that has not been used. In addition, the own weight is used for fixing the joint absorbing bus bar 31.

With the above-described fixing structure, sufficient fixing can be realized without providing a lance lock (not shown) for the joint absorbing bus bar 31 in the insertion portion 32, which also contributes to manufacturability. Will be.

In addition, it goes without saying that the present invention can be variously modified without departing from the gist of the present invention.

[0047]

As described above, according to the first aspect of the present invention, a structure for fixing a joint absorbing bus bar includes a joint absorbing bus bar having a plurality of terminals formed on one side of a substrate portion. A fixing structure for a joint absorbing bus bar of an electric connection box having a joint connector having a cavity formed in one wall of a casing constituting an electric connection box, the other wall facing the cavity and one wall of the casing An insertion part of a bus bar for joint absorption that allows the other side of the board part to be able to contact the mounted part is formed between the mounted part and the mounted part, and the joint part and the mounted part absorb the joint. Adopts a structure to fix the bus bar for When such a fixing structure is adopted and the mating connector is fitted to the joint connector, a force from the mating connector is applied to the terminal of the joint absorbing bus bar, and the force is received by the insertion portion and the mounted component. . In particular, the movement of the joint absorbing bus bar is restricted by the mounted components, and the connection between the mating connector and the joint absorbing bus bar is normally performed. Also, before the mounted component is mounted on the casing, the mating connector is fitted into the joint connector, and even if the joint absorbing bus bar is moved from a predetermined position of the insertion portion by the above-mentioned force, it is mounted thereafter. Since the other side of the board part of the joint absorbing bus bar comes into contact with the mounted component, the joint absorbing bus bar is pushed back to the predetermined position, and the connection between the mating connector and the joint absorbing bus bar is performed as described above. It will be performed normally. Therefore, there is an effect that it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

According to the second aspect of the present invention, the insertion portion is configured so that the bottom wall of the cavity serves as a stopper to the one side when the bus bar for joint absorption is inserted. With this configuration, even if the mating connector fitted to the joint connector is removed with great force, the one side of the bus bar for joint absorption will be restricted from moving by the bottom wall, and will come off. It will not be lost. Therefore, there is an effect that it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

According to the third aspect of the present invention, the insertion portion is formed integrally with the other wall of the casing. Since the mounted components are mounted on the casing as described above,
Forming the insertion portion integrally with the casing prevents a positional deviation from the mounted component. Therefore, there is an effect that it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

According to the fourth aspect of the present invention, the mounting component is provided with the locking means for restricting the movement in the same direction as the mating direction of the mating connector mating with the joint connector. Therefore, since the force from the mating connector received through the joint absorbing bus bar can be further countered, the joint absorbing bus bar in the electric connection box with the joint connector is securely fixed. There is an effect that the obtained fixing structure can be provided.

According to the fifth aspect of the present invention, the mounted component is an electronic unit having a flat surface at least to which the other side of the joint absorbing bus bar abuts.
The electronic unit generally occupies a large portion of the electric junction box, and has a sufficiently large contact surface with the casing as compared with other mounted components. However, since most of the abutting surfaces only abut the casing, making the joint absorbing busbar abut on the abutting surface means effectively using the unused parts. become. Further, the own weight of the electronic unit is used for fixing the joint absorbing busbar. Therefore, there is an effect that it is possible to provide a fixing structure capable of reliably fixing the joint absorbing bus bar in the electric connection box with the joint connector.

[Brief description of the drawings]

FIG. 1 is a perspective view of a relay box showing one embodiment of a joint absorbing busbar fixing structure in an electric connection box with a joint connector according to the present invention.

FIG. 2 is a cross-sectional view of the insertion portion of FIG.

FIG. 3 is an explanatory view illustrating the operation of the joint absorbing busbar fixing structure using the cross-sectional portion of the insertion portion in FIG. 1;

FIG. 4 is a plan view of a conventional electric junction box.

FIG. 5 is an exploded perspective view of a joint connector part of FIG. 4;

FIG. 6 is a sectional view taken along line AA of FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 Relay box (electric connection box) 22 Box main body 23 Casing 27 Control unit (mounting part, electronic unit) 30 Cavity 31 Joint absorption bus bar 32 Insertion part 33 Joint connector

Claims (5)

[Claims] 1. An electric connection box comprising a joint connector having a joint absorbing bus bar having a plurality of terminals formed on one side of a substrate and a cavity formed on one wall of a casing constituting the electric connection box. A fixing structure for the joint absorbing busbar, wherein the other side of the substrate portion with respect to the one side is mounted between the cavity and a mounting component mounted on another wall of the casing facing the one wall. An electric connection box with a joint connector, wherein an insertion portion of the joint absorbing bus bar which can be brought into contact with a component is formed, and the joint absorbing bus bar is fixed with the insertion portion and the mounting component. Fixed structure of busbar for joint absorption. 2. The fixing structure of a bus bar for joint absorption in the electric junction box with a joint connector according to claim 1, wherein a bottom wall of the cavity is provided with a stopper for the one side when the bus bar for joint absorption is inserted. A fixing structure of a bus bar for absorbing a joint in an electric connection box with a joint connector, wherein the insertion portion is formed as follows. 3. The fixing structure of a bus bar for absorbing a joint in an electric junction box with a joint connector according to claim 1, wherein the insertion portion is formed integrally with the other wall of the casing. Fixing structure of the joint absorption busbar in the electric connection box with the joint connector. 4. The fixing structure of a bus bar for absorbing a joint in an electric connection box with a joint connector according to claim 1, wherein a mating connector fitted to the joint connector is fitted to the mounted component. A fixing structure of a bus bar for joint absorption in an electric connection box with a joint connector, wherein a lock means for restricting movement in the same direction as the direction is provided. 5. The fixing structure of a bus bar for joint absorption in an electric connection box with a joint connector according to any one of claims 1 to 4, wherein the mounting component is such that at least the other side of the bus bar for joint absorption only abuts. A joint absorbing busbar fixing structure in an electric junction box with a joint connector, which is an electronic unit having a flat surface.