JP2004080966A - Electrical connection box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a nonconducting state of electrical parts from occurring due to vibrations by pushing the electrical parts down to perfectly fitted positions when a casing and a cover are coupled when the electric parts that are mounted on an electrical connection box are positioned in a half-fitted state. <P>SOLUTION: The electrical connection box 10 comprises a casing 11 and a cover 12, that is capped on the casing 11. The electrical parts, including a fuse 20 and a current sensor 30, are mounted in a fitted state in a storing space provided on the casing 11. A fuse-pressing rib 12a and a current sensor pressing rib 12b are provided protrusively on the inside surface of the cover 12 at the positions facing the electric parts. When the cover 11 and the casing 12 are coupled, it is configured to press the electrical parts, and if they are half-fitted, down to the perfect fitted positions, by pressing the protruding end surface of the pressing ribs to contact the end surface of the electrical parts. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric connection box, and more specifically, when an electric component mounted on a case of an electric connection box is at a half-fitting position, covers the case and pushes the case to a regular fitting position.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, in an electric junction box 1, electric parts such as a fuse 5, a relay 6, and a current sensor are fitted and mounted in a housing portion provided in a case main body 2, and these electric parts are mounted on the case main body. The case body 2 is connected to the bus bar 7, and the case body 2 is combined with the upper cover 3 and the lower cover 4.
[0003]
In the electric connection box 1, a continuity test is performed in a state where electric components such as fuses are mounted on the case main body 2 and connected to the bus bar 7. If the continuity is established and the test is OK, the electric components such as fuses are authenticated. It is considered to be fitted at the fitting position.
[0004]
[Problems to be solved by the invention]
However, even if the electric component such as the fuse is in a half-fitted state, conduction is performed when a part of the terminal of the fuse is in contact with the terminal on the bus bar side, so that the continuity test may be OK. . In this case, the electrical components remain assembled in a semi-fitted state, and when the electrical junction box is mounted on an automobile, the terminals of the electrical components and the busbar terminals may be brought into contact with each other due to vibrations during traveling or the like. It becomes unstable and may cause non-conduction.
[0005]
The present invention has been made in view of the above problems, and has as its object to improve the reliability of electrical connection by ensuring that electrical components mounted on an electrical connection box are pushed into a fitting position.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides an electric device in which an electric component including a fuse, a current sensor or / and a relay is fitted and mounted in a housing provided in a case, and the case is covered with a cover. In the junction box,
Pressing ribs are integrally protruded from the inner surface of the cover at a position facing the electric component, and when the cover and the case are coupled, the protruding end surface of the pressing rib is pressed against the outer end surface of the electric component. The present invention provides an electric connection box characterized in that if an electric component is at a half-fitting position, it is pushed into a regular fitting position.
[0007]
With the above configuration, when the cover is put on the case and coupled, the holding rib provided on the inner surface of the cover at the position facing the electric component presses the outer end surface of the electric component, so that the electric component is at the half-fitted position. Thus, it is possible to reliably push it into the regular fitting position. Further, even if vibration is applied during traveling of the vehicle, the electrical components are always held by the holding ribs of the cover and are held at the regular fitting position, so that the reliability of the electrical connection can be improved.
[0008]
When there is a current sensor as the electric component and a rubber seal is provided on the bottom surface of the current sensor, the rubber seal is uniformly pressed on the bottom surface of the case by pressing the upper surface of the current sensor with the pressing rib. Is preferred.
[0009]
As described above, when the current sensor is supported on the case via the rubber seal, the sealing performance can be maintained, the vibration transmitted to the current sensor can be absorbed by the rubber seal, and the detection function of the current sensor can be maintained with high accuracy.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 4 show a first embodiment of the present invention. The electric connection box of the embodiment comprises a fuse block 10 mounted in an engine room, and the housing of the fuse block 10 comprises a case 11 and a cover 12.
[0011]
The case 11 has a bottom and an upper surface opening, and has lock claws 11d and 11e for covers 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 11a by a plug-in through an opening on the upper surface, and is connected to an input-side bus bar 21 and an output-side bus bar 22 which are arranged in the case 11 in advance.
[0012]
As shown in FIG. 2, the current sensor 30 has a rib connection portion 30b protruding from a main body 30a and a rubber seal 30c attached to the bottom surface of the main body 30a. The connection portion 30b projects 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 It is pressed against the bottom surface in a sealed state.
[0013]
The cover 12 includes an upper wall 12d and an outer peripheral wall 12e. Two fuse holding ribs 12a and a current sensor holding rib 12b protrude from the inner surface of the upper wall 12d as shown in FIG. In the present embodiment, the fuse holding ribs 12a and the current sensor holding ribs 12b have a cross shape, and have a shape that enables stable holding. Note that the shape of the holding rib is not limited to the cross shape. When the height of the holding rib is large, a reinforcing portion may be provided.
[0014]
As shown in FIG. 4, when the cover 12 is connected to the case 11 on which the fuse 20 and the current sensor 30 are mounted, the fuse holding rib 12a and the current sensor The protruding end faces of 12b are provided at positions where they come into contact with the upper surface of the fuse 20 and the upper surface of the current sensor 30, respectively. Further, the fuse holding ribs 12a and the current sensor holding ribs 12b are set at such a height that the fuse 20 and the current sensor 30 are pushed into the respective housing portions to the regular fitting positions.
A lock portion 12c is provided on the outer peripheral wall 12e of the cover 12 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 combined, the fuse holding ribs 12a protruding from the inner surface of the cover 12 contact the upper surfaces of the fuse 20 and the current sensor 30 in the case 11, and the current sensor holding ribs 12b abut. . When the fuse 20 and the current sensor 30 are located above the regular fitting position in the semi-fitted state, the fuses 20 and the current sensor 30 are pushed to the regular fitting positions by the holding ribs 12a and 12b.
[0016]
In this manner, by locking the cover 12 to the case 11, even if the fuse 20 and the current sensor 30 are at the half-fitting position, they can be forcibly pushed to the regular fitting position.
In addition, even when vibration is applied when the vehicle is mounted on the vehicle, the fuse 20 and the current sensor 30 are held by the holding ribs 12b and 12c without deviating from the proper fitting position. And electrical connection reliability can be improved.
[0017]
Further, the current sensor holding rib 12b provided on the cover 12 presses the current sensor 30 to uniformly press the rubber seal 30c attached to the main body 30a against the bottom surface of the case 11, so that the sealing property can be maintained. The vibration transmitted to the current sensor 30 can be absorbed by the rubber 30c.
[0018]
The configuration of the present invention is similar to the conventional example described above, in which the case is covered with the upper cover and the lower cover, the busbar is housed inside the case, and a fuse and a relay are mounted by plug-in in the housing provided in the case. The present invention can also be suitably applied to a case where the connection is made.
[0019]
That is, as shown in the second embodiment of FIG. 5, the case 50 is provided with the relay accommodating portion 50a, the relay 60 is mounted by plug-in, and the case 50 is covered with the upper cover 51 and the lower cover 52, and is locked. ing.
A relay holding rib 51a protrudes from the inner surface of the upper cover 51, and when the relay 60 is at the half-fitting position, when the upper cover 51 and the lower cover 52 are combined, the relay holding rib 51a fits the relay 60 properly. It is configured to be pushed to the mating position.
[0020]
With the above configuration, even when the relay is mounted on the electric connection box, the relay can be securely 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 apparent from the above description, according to the present invention, in an electric junction box in which electric components such as a fuse, a relay, and a current sensor are fitted and mounted, when the case and the cover are joined together, Pressing ribs protruding from the inner surface of the cover onto the electric component to be mounted can be forcibly pushed into the respective regular fitting positions. As a result, the electric components are in a semi-fitted state, and it is possible to prevent the electric components from being detached from the accommodation portion of the case due to the vibration of the automobile and the like, and the occurrence of non-conduction can be prevented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an electric junction box of 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 a positional relationship between an electric component and a holding rib.
FIG. 5 is a drawing showing a modification of the embodiment of the present invention.
FIG. 6 is a drawing showing a conventional example.
[Explanation of symbols]
Reference Signs List 10 Electrical connection box 11 Case 11a Fuse accommodating section 11b Current sensor accommodating section 12 Cover 12a Fuse holding rib 12b Current sensor holding rib 20 Fuse 30 Current sensor 30c Rubber seal 50 Case body 51 Upper cover 51a Relay holding rib 52 Lower cover 60 Relay

Claims (2)

In an electric connection box in which an electric component including a fuse, a current sensor, and / or a relay is fitted and mounted in a housing portion provided in a case, and the case is covered with a cover and joined,
Pressing ribs are integrally protruded from the inner surface of the cover at a position facing the electric component, and when the cover and the case are coupled, the protruding end surface of the pressing rib is pressed against the outer end surface of the electric component to form a half. An electric connection box, wherein the electric component at a fitting position is pushed into a regular fitting position. The electric connection box according to claim 1, wherein the current sensor has a rubber seal attached to a bottom surface, and the rubber seal is uniformly pressed on the bottom surface of the case by pressing an upper surface of the current sensor with the holding rib. .

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