JPH09283004A - Electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box wherein the efficiency of terminal assembling work can be improved and the number of parts can be decreased. SOLUTION: This electric connection box includes a box main body 21 wherein a fuse 51 is interfit to several fuse fit-in parts 22 and a fusible link 52 is interfit to several fusible link interfit parts 23 and a main fusible link 53 is interfit to several main fusible link interfit parts 24. Connection terminals 70 and 80 to be electrically connected to the fuse 51 and the fusible link 52 respectively are installed in the interfit parts 22 and 23 respectively. A spacer 100 is inserted from a side face of one end of the box main body 21 to prevent the connection terminal 70 installed in the fuse fit-in part 22 from slipping off. In this case, the fuse interfit part 22, the fusible link interfit part 23 and the main fusible link interfit part 24 are arranged in that order from one end of the box main body 21 to the other end thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box mounted on a vehicle, for example.

[0002]

2. Description of the Related Art Conventionally, as an electric junction box, Japanese Patent Laid-Open No. 7-
The one described in Japanese Patent No. 302539 is known.

In such an electric connection box, as shown in FIG. 10, a main fuse-gibble link fitting portion 1 for a large capacity load is provided substantially in the center of a box body 2, and a plurality of fuse gibbles for a large capacity load are provided. Housing assembly 7, 8 including link fittings 3, 4 and a plurality of fuse fittings 5, 6 for small capacity load
Are separately provided at two points so as to be point-symmetric with respect to the main fuse-jibble link fitting portion 1.

[0004]

By the way, in such a conventional electric junction box, the fuse 11 for a small capacity load is assembled to the fuse fitting portions 5 and 6. By the assembly of the fuse 11, The terminal 11 a of the fuse 11 is fitted and connected to the small-capacity connecting portions 14 and 15 of the bus bars 12 and 13, and the terminal 11 b of the fuse 11 is fitted and connected to the terminal 17 fixed to the tip of the wire harness 16. As a result, the current of the power supply (battery and alternator) is changed to the bus bars 12 and 13 and the fuse 11.
Flow to each load through.

The terminals 17 of the wire harness 16 are preliminarily assembled to the fuse fitting portions 5 and 6, respectively. The terminals 17 are assembled to the fuse fitting portions 5 and 6 under the box body 2 shown in FIG. Insert from the side. In the actual work, the box body 2 is turned over. Then, first, for example, the terminal 17 is assembled to the fuse fitting portion 5, and after this assembly is completed, the terminal 17 is assembled to the fuse fitting portion 6.

By the way, the fuse fitting portion 5 is attached to the terminal 17.
By providing a protrusion or the like to prevent the terminal 17 from coming off from the fuse fitting portion 5 and further by providing a locking portion for locking the protrusion or the like in the fuse fitting portion 5, The direction is fixed.

Therefore, when the assembly of the fuse fitting portion 5 is changed to the assembly of the fuse fitting portion 6, the terminal 1
In order to assemble without changing the direction of 7, the inverted box body 2 may be inverted 180 degrees, but since the fuse fitting part 5 is in a state in which a large number of wire harnesses 16 are connected, It is difficult to invert the box body 2 by 180 degrees.

Therefore, the box body 2 is first laid down, and the terminals 17 are assembled to the fuse fitting portion 6 with the terminals 17 oriented in the opposite direction. As a result, the work of assembling the terminal 17 becomes complicated, and the work efficiency thereof decreases.

Spacers 18 and 18 are inserted into the fuse fitting portions 5 and 6 from the side of the box body 2, and these and a locking lance (not shown) are locked to the terminal 17 to fit the fuse. The terminal 17 is prevented from coming off from the mating portions 5 and 6 twice. As described above, in order to prevent the terminals 17 assembled in the fuse fitting parts 5 and 6 from coming off, two spacers 18 and 18 are required, which increases the number of parts and the insertion work process. was there.

Further, since the fuse fitting portions 5 and 6 are located symmetrically with respect to the main fuse jibile link fitting portion 1, the orientation of the terminal 17 to be fitted to the fitting portion 5 and the fitting portion 6 are fitted. It is easy to mistake the direction of the bar terminal 17,
There is a problem of improper assembly.

The present invention has been made in view of the above problems, and an object thereof is to provide an electric junction box capable of improving the efficiency of terminal assembling work and reducing the number of parts. It is in.

[0012]

In order to achieve the above object, the present invention fits a plurality of fuse fitting portions for fitting fuses for small capacity loads and fusible links for small capacity loads. A plurality of fusible link fittings,
A main fusible link fitting part for fitting a main fusible link for a large capacity load is provided on the box body, and each connection terminal electrically connected to the fuse and fusible link is in each fitting part. An electrical connection box, which is mounted on the fuse box, inserts a spacer from a side surface on one end side of the box body, and prevents the connection terminals mounted in the fuse fitting section from coming off. A plurality of fusible link fitting portions and a main fusible link fitting portion are sequentially arranged in this order from one end side to the other end side of the box body.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electric junction box according to the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 20 is an electric connection box mounted on a vehicle or the like.
The box main body 21 and two bus bars 40 mounted in the box main body 21 as shown by a broken line (in FIG. 2) are provided.

On the upper surface (in FIG. 1) of the box body 21,
A plurality of fuse fitting portions 22 into which the fuses 51 for small capacity loads are fitted, and the fusible link 5 for small capacity loads
A plurality of fusible link fitting portions 23 for fitting two
, A main fusible link fitting part 24 for fitting the main fusible link 53 for large capacity load, and a pair of sub fusible link fitting parts 25 for fitting the sub fusible link 54 for medium capacity load. Are sequentially provided in this order from one end side (left side in FIG. 2) of the box main body 21 to the other end side (right side in FIG. 2).

The fuse fitting portions 22 and the fusible link fitting portions 23 are arranged in two rows along the longitudinal direction of the box body 21, and each row is arranged in the left-right direction (in FIG. 2). Are arranged at the same position and in the same direction. A pair of sub fusible link fitting parts 25
Are also arranged in the same position and in the same direction along the extension lines of the above two rows. The longitudinal direction of the sub fusible link fitting portion 25 is parallel to the longitudinal direction of the box body 21.

As shown in FIG. 3, each bus bar 40 has a plurality of protrusions 42 on a plate-shaped base 41 extending in the left-right direction.
A plurality of terminals 43 to 45 are formed. Connection terminals 60 are attached to the respective projections 42, and these connection terminals 60 are attached inside the fuse fitting portion 22, respectively. Further, the terminals 43 to 45 of the bus bar 40 are connected to the fusible link fitting portion 23, the main fusible link fitting portion 2
4. The auxiliary fusible link fitting portions 25 are respectively arranged.

Power supply terminals 61 and 61a are connected to the terminals 44 of both bus bars 40 by bolts 62 and nuts 63. The power supply terminal 61 is connected to the battery, and the power supply terminal 61a is connected to the alternator.

As shown in FIG. 4, each connection terminal 60 has a terminal portion 64 to which the terminal 51a of the fuse 51 is fitted and connected.
And the fixing portion 6 fitted and held by the protrusion 41 of the bus bar 40.
5 is provided. The locking protrusion 65 is provided on one side of the fixed portion 65.
A is formed, and the locking portion 65 is provided on the other side of the fixed portion 65.
B is formed. The locking projection 65A is locked to the arm member 101 of the spacer 100, which will be described later, and the locking portion 65B is locked to the locking piece 22B provided in the fitting portion 22.

Further, each fuse fitting portion 22, fusible link fitting portion 23, sub fusible link fitting portion 25.
As shown in FIGS. 4 to 6, connection terminals 70, 80, 90 electrically connected to the fuse 51, the fusible link 52, and the sub fusible link 54 are mounted therein.

As shown in FIG. 4, the connection terminal 70 has a terminal portion 71 to which the terminal 51b of the fuse 51 is fitted and connected,
The wire harness W1 has a fixing portion 72 to which the end portion is fixedly held. A locking protrusion 72A is formed on one side of the fixed portion 72, and a locking portion 72B is formed on the other side of the fixed portion 72. The locking projection 72A is locked to the arm member 102 of the spacer 100 described later, and the locking portion 7
2B is locked to a locking piece 22C provided in the fitting portion 22 to prevent the connection terminal 70 from being pulled out downward (in FIG. 4) doubly.

As shown in FIG. 5, the connection terminal 80 has a terminal 81 which is inserted and connected in the fusible link 52, and a fixing portion 82 which fixes and holds the end portion of the wire harness W2. A locking protrusion 82A is formed on the portion 82. The locking projection 82A is locked to the locking piece 23A formed in the fusible link fitting portion 23 to prevent the connection terminal 80 from coming out downward.

On the other hand, the protrusion 43 is provided on the terminal 43 of the bus bar 40.
3A is formed, and the projection 43A is locked to the locking piece 23B formed in the fusible link fitting portion 23 to prevent the bus bar 40 from falling out (in FIG. 5).

Further, the terminal pressing member 85 is fitted in the opening 23C below the fusible link fitting portion 23, and the projections 85A, 85B of the terminal pressing member 85 are opened in the opening 23C.
The terminal pressing member 8 is locked to the locking portions 23d and 23e of C.
5 is prevented from falling out.

A recess 8 is formed on the upper surface 85C of the terminal pressing member 85.
5d is formed, and this recess 85d is also formed on the base portion 4 of the bus bar 40.
The lower part 41A of No. 1 is held to prevent the bus bar 40 from coming out downward. In addition, the upper surface 8 of the terminal pressing member 85
A locking member 86 is interposed between 5C and the lower portion of the fixed portion 82 of the connection terminal 80, and this locking member 86 also prevents the connection terminal 80 from coming off.

As shown in FIG. 6, the connection terminal 90 includes a terminal 91 which is inserted and connected in the sub fusible link 54,
The wire harness W3 has a fixed portion 92 to which the end portion of the wire harness W3 is fixedly held, and the fixed portion 92 has a locking portion 92A. The locking portion 92A is locked to a locking piece 25A formed in the sub fusible link fitting portion 25 to prevent the connection terminal 90 from falling out.

On the other hand, the protrusions 4 are provided on the terminals 45 of the bus bar 40.
5A is locked, and this projection 45A is locked by a locking piece 25B formed in the sub fusible link fitting portion 25, so that the bus bar 40 is prevented from falling out.

Further, the terminal pressing member 95 is fitted in the opening 25C below the sub fusible link fitting portion 25, and the projection 95A of the terminal pressing member 95 is formed on the side wall forming the opening 25C. The terminal pressing member 95 is locked to the locking portion 25d provided at the lower portion to prevent the terminal pressing member 95 from coming out downward. A locking member 97 is interposed between the upper surface 96 of the terminal pressing member 95 and the fixed portion 92 of the connection terminal 90 to connect the connection terminal 9 to each other.
It is possible to prevent 0 from falling out.

In FIG. 1, 100 is a box body 21.
The spacer 100 is inserted from the side wall 21A. The spacer 100 is provided with a pair of arm members 101 and 102. When the spacer 100 is inserted from the side wall 21A, the arm members 101 and 102 are inserted into the fuse fitting portions 22 as shown in FIG. Terminals 60, 70
The locking projections 65A and 72A are locked.

By the way, since the fuse fitting portions 22 are sequentially provided in two rows and in the same direction from one end side to the other end side of the box body 21, the connecting terminals 70 are provided inside the fuse fitting portion 22. When assembled and mounted, the connection terminals 70 can be assembled to the fuse fitting portions 22 without changing the orientation, and the efficiency of the assembly work is improved. Further, since the fuse fitting portions 22 in each row are provided in the same direction, there is no possibility that the connection terminal 70 is erroneously inserted by mistake as in the conventional case.

Further, although the fuse fitting portions 22 are provided in two rows, the fuse fitting portions 22 are sequentially provided from one end side to the other end side of the box main body 21. It is possible to prevent the connection terminal 70 attached to the connector 22 from coming off. Therefore, the number of parts and the number of assembling steps can be reduced, and the cost can be reduced.

The fuse fitting portion 22, the fusible link fitting portion 23, and the sub fusible link fitting portion 2 in each row.
Since 3 are arranged in the same position and in the same direction and in the same number, both bus bars 40, 40 can have the same shape. Therefore, the bus bar 40 can be shared and the number of parts can be reduced. And the cost can be reduced.

Further, the sub fusible link fitting portion 25
Are arranged so that the longitudinal direction is parallel to the longitudinal direction of the box body 21, so that the width of the box body 21 can be narrowed.

FIG. 7 shows another embodiment of the electric junction box 120. In this embodiment, the number of the sub fusible link fitting portions 25 is increased by one pair. FIG.
And FIG. 9 shows a bus bar 140 used in this embodiment. This bus bar 140 has one terminal 44
It has been increased.

[0035]

As described above, according to the invention of claim 1, the connection terminal can be assembled to each fuse fitting portion without changing the direction, and the efficiency of the assembling work can be improved. Can be planned.

According to the second aspect of the present invention, it is possible to prevent the connection terminals attached to the fuse fitting portions arranged in two rows from coming off with one spacer. Therefore, the number of parts and the number of assembly steps are increased. Can be reduced, and the cost can be reduced. Further, when the busbars are provided along each row, both busbars can be shared, and the number of parts and the cost can be reduced. further,
Since the fuse fitting portions in each row are arranged in the same direction, it is possible to prevent the connection terminals from being erroneously inserted by mistake, unlike the conventional case.

According to claim 3 and the invention of claim 3,
The width of the box body can be narrowed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of an electrical junction box according to the present invention.

FIG. 2 is a plan view showing a box body of the electric junction box of FIG.

FIG. 3 is a plan view showing a bus bar.

FIG. 4 is a partially enlarged cross-sectional view showing a fuse fitting portion of the box body.

FIG. 5 is a partially enlarged sectional view showing a fusible link fitting portion of the box body.

FIG. 6 is a partially enlarged cross-sectional view showing a sub fusible link fitting portion of the box body.

FIG. 7 is a plan view showing a box body of another embodiment.

FIG. 8 is a plan view showing a bus bar of another embodiment.

9 is a perspective view showing the bus bar of FIG. 8. FIG. It is explanatory drawing of the display image visually recognized from the changing seat.

FIG. 10 is an exploded perspective view showing a configuration of a conventional electrical junction box.

[Explanation of symbols]

 21 box body 22 fuse fitting part 23 fusible link fitting part 24 main fusible link fitting part 51 fuse 52 fusible link 53 main fusible link 70 connection terminal 80 connection terminal 100 spacer

Claims (4)

[Claims] 1. A plurality of fuse fitting portions for fitting fuses for small capacity loads, a plurality of fusible link fitting portions for fitting fusible links for small capacity loads, and a plurality of fusible link fitting portions for large capacity loads. A main fusible link fitting part for fitting the main fusible link is provided in the box body, and the fuse and each connection terminal electrically connected to the fusible link are mounted in each fitting part, and An electrical connection box in which a spacer is inserted from a side surface on one end side of a box main body to prevent a connection terminal mounted in the fuse fitting part from coming off, the fuse fitting part and the plurality of fusible links. An electrical junction box characterized in that a fitting portion and a main fusible link fitting portion are sequentially arranged in this order from one end side to the other end side of the box body. 2. The plurality of fuse fitting portions and the fusible link fitting portions are arranged in two rows, and each row is arranged in the same position and in the same direction in the same number. Electrical junction box. 3. A sub-fusible link fitting portion for fitting a sub-fusible link for a medium capacity load is provided on the other end side of the box body, and the sub-fuse fusible link fitting portion is oriented in the longitudinal direction. The electrical junction box according to claim 1, wherein the direction is parallel to the longitudinal direction of the box body. 4. A sub-fusible link fitting portion for fitting a sub-fusible link for a medium capacity load is provided along the second row line and at the other end side of the box body, and the sub-fuse fuse is provided. 3. The electrical junction box according to claim 2, wherein the direction of the bull link fitting portion is such that its longitudinal direction is parallel to the longitudinal direction of the box body.