JP4007121B2 - Electrical junction box - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an electrical connection box. More specifically, when an electrical component mounted on a case of the electrical connection box is in a half-fitting position, the cover is put on the case and pushed into a normal fitting position.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, in the electrical junction box 1, electrical parts such as a fuse 5, a relay 6, and a current sensor are fitted and mounted in a housing provided in the case body 2, and these electrical parts are mounted on the case body. 2 is connected to the bus bar 7 accommodated in the housing 2, and the case body 2 is joined by covering the upper cover 3 and the lower cover 4.
[0003]
In the electrical junction box 1, a continuity test is performed in a state where electrical components such as fuses are mounted on the case body 2 and connected to the bus bar 7, and if the continuity is made and the test is OK, the electrical components such as fuses are normal. It is considered to be fitted in the mating position.
[0004]
[Problems to be solved by the invention]
However, even if an electrical component such as a fuse is in a half-fitted state, conduction is made when a part of the fuse terminal is in contact with the terminal on the bus bar side, so the continuity test may be OK. . In that case, the electrical parts remain assembled in a semi-fitted state, and when this electrical junction box is mounted on an automobile, contact between the terminals of the electrical parts and the terminals of the bus bar is caused by vibrations during traveling. It may become unstable and non-conduction may occur.
[0005]
This invention is made | formed in view of the said problem, and makes it the subject to improve electrical connection reliability by making the electrical component mounted in an electrical-connection box push into a fitting position reliably.
[0006]
[Means for Solving the Problems]
To solve the above problems, the present invention is fitted current sensor over the housing portion provided on the case and mounted in the electrical connection box which is attached covered with a cover on said casing,
A pressing rib is integrally projected on the inner surface of the cover at a position facing the current sensor, and an annular rubber seal is provided on the bottom surface of the current sensor body so as to surround the connection portion projecting from the bottom surface. And
The pressing protrusion end surface of the ribs upon binding of the cover and the case is pressed against the upper central portion of the current sensor, Push the current sensor on the half-fitting position to the regular engagement position, of the current sensor An electrical connection box is provided in which the connection portion is projected from an opening provided on the bottom surface of the case, and the rubber seal is configured to be held in a sealed state at the periphery of the opening of the bottom surface .
[0007]
With such a configuration, when bound case covered with a cover, for pressing rib provided on the inner surface of the cover at a position opposing the current sensor pressed against the outer end face of the current sensor, the current sensor is in the half-fitting position It can be surely pushed to the normal fitting position. Even when vibration is applied during traveling of the automobile, the current sensor is always pressed by the pressing rib of the cover and held at the normal fitting position, so that the electrical connection reliability can be improved.
[0009]
As described above, when the current sensor is supported on the case via the rubber seal, the sealing performance can be maintained, and the vibration transmitted to the current sensor can be absorbed by the rubber seal, so that the detection function of the current sensor can be accurately maintained.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment of the present invention. An electrical junction box according to the embodiment includes a fuse block 10 mounted in an engine room. A housing of the fuse block 10 includes a case 11 and a cover 12.
[0011]
The case 11 has a bottom and a top opening, and has cover claws 11d and 11e on the outer surface. Two fuse accommodating portions 11a and a current sensor accommodating portion 11b are provided inside, and a central portion is a space 11c for accommodating a relay. A fuse 20 is mounted in the fuse accommodating portion 11 a by plug-in from an upper surface opening, and is connected to an input-side bus bar 21 and an output-side bus bar 22 arranged in advance in the case 11.
[0012]
As shown in FIG. 2, the current sensor 30 has a rib connecting portion 30b protruding from the main body 30a, and a rubber seal 30c attached to the bottom surface of the main body 30a. The connecting portion 30b protrudes from an opening (not shown) provided on the bottom surface of the case 11 when the current sensor 30 is fitted into the current sensor housing portion 11b, and a rubber seal 30c attached to the main body 30 is provided on the case 11. The bottom surface is pressed in a sealed state.
[0013]
The cover 12 includes an upper wall 12d and an outer peripheral wall 12e, and two fuse pressing ribs 12a and a current sensor pressing rib 12b protrude from the inner surface of the upper wall 12d as shown in FIG. In the present embodiment, the fuse pressing rib 12a and the current sensor pressing rib 12b are formed in a cross shape so that stable pressing can be performed. The shape of the holding rib is not limited to a cross shape. Further, when the height of the pressing rib is large, a reinforcing portion may be provided.
[0014]
As shown in FIG. 4, the fuse holding rib 12a and the current sensor holding rib 12b are formed when the cover 12 is coupled to the case 11 on which the fuse 20 and the current sensor 30 are mounted. The protruding end surfaces of 12b are provided at positions where they contact the upper surface of the fuse 20 and the upper surface of the current sensor 30, respectively. Further, the fuse holding rib 12a and the current sensor holding rib 12b are set to a height at which the fuse 20 and the current sensor 30 are pushed into the respective accommodating portions to the normal fitting positions.
Further, on the outer peripheral wall 12e of the cover 12, a lock portion 12c is provided at a position corresponding to the lock claw 11d of the case 11, and a lock portion 12f is provided at a position corresponding to the lock claw 11e.
[0015]
With the above configuration, when the case 11 and the cover 12 are coupled, the fuse holding rib 12a protruding from the inner surface of the cover 12 is brought into contact with the upper surface of the fuse 20 and the current sensor 30 in the case 11 and the current sensor holding rib 12b. . When the fuse 20 and the current sensor 30 are in a half-fitted state and are positioned above the normal fitting position, the fuses 20 and the current sensor 30 are pushed into the normal fitting position by the pressing ribs 12a and 12b, respectively.
[0016]
In this way, by locking the cover 12 to the case 11, even if the fuse 20 and the current sensor 30 are in the half-fitting position, they can be forcibly pushed to the normal fitting position.
Further, even when vibration during driving is applied when the vehicle is mounted, since the fuse 20 and the current sensor 30 are held by the holding ribs 12b and 12c without being deviated from the normal fitting position, non-conduction occurs. In addition, the electrical connection reliability can be improved.
[0017]
Further, the current sensor pressing rib 12b provided on the cover 12 presses the current sensor 30, so that the rubber seal 30c attached to the main body 30a is uniformly pressed against the bottom surface of the case 11, so that the sealing performance can be maintained and the seal The vibration transmitted to the current sensor 30 can be absorbed by the rubber 30c.
[0018]
The configuration of the present invention is such that the case is covered with the upper cover and the lower cover, the bus bar is accommodated inside the case, and the fuse and the relay are plugged in the accommodating portion provided in the case. The present invention can also be suitably applied to the case where it is connected.
[0019]
That is, as shown in the second embodiment in FIG. 5, the case 50 is provided with a relay accommodating portion 50a, the relay 60 is mounted by plug-in, and the upper cover 51 and the lower cover 52 are put on the case 50 and locked together. ing.
When the relay pressing rib 51a protrudes from the inner surface of the upper cover 51 and the relay 60 is in the half-fitting position, the relay pressing rib 51a normally fits the relay 60 when the upper cover 51 and the lower cover 52 are coupled. It is configured to push to the matching position.
[0020]
With the above configuration, even when the relay is mounted on the electrical junction box, the relay can be reliably fitted into the housing portion of the case body by the holding rib provided on the upper cover.
[0021]
【The invention's effect】
As is clear from the above description, according to the present invention, in the electrical junction box in which electrical parts such as a fuse, a relay, and a current sensor are fitted and mounted, when the case and the cover are coupled, The holding ribs that project the electric components to be mounted on the inner surface of the cover can be forcibly pushed to the normal fitting positions. Thereby, an electrical component will be in a half-fitted state, and it can prevent that it will detach | leave from the accommodating part of a case by the vibration of a motor vehicle, etc. and a non-conduction will arise.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an electrical junction box according to the present invention.
FIG. 2 is a perspective view of a current sensor.
FIG. 3 is a perspective view showing an inner surface of a cover.
FIG. 4 is a drawing showing the positional relationship between electrical parts and holding ribs.
FIG. 5 is a view showing a modification of the embodiment of the present invention.
FIG. 6 is a diagram showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Electrical junction box 11 Case 11a Fuse accommodating part llb Current sensor accommodating part 12 Cover 12a Fuse holding rib 12b Current sensor holding rib 20 Fuse 30 Current sensor 30c Rubber seal 50 Case main body 51 Upper cover 51a Relay holding rib 52 Lower cover 60 Relay

Claims (1)

Fitted current sensor over the housing portion provided on the case and mounted in the electrical connection box which is attached covered with a cover on said casing,
A pressing rib is integrally projected on the inner surface of the cover at a position facing the current sensor, and an annular rubber seal is provided on the bottom surface of the current sensor body so as to surround the connection portion projecting from the bottom surface. And
The pressing protrusion end surface of the ribs upon binding of the cover and the case is pressed against the upper central portion of the current sensor, Push the current sensor on the half-fitting position to the regular engagement position, of the current sensor An electrical connection box characterized in that the connecting portion protrudes from an opening provided on the bottom surface of the case, and the rubber seal is uniformly pressed to the periphery of the opening on the bottom surface .

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