JP4008300B2 - Electrical junction box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical junction box provided so that the junction box body can be stored and pulled out by sliding on a cover.
[0002]
[Prior art]
As this type of electrical junction box, there is a development stage shown in FIG. As shown in FIG. 9, the electrical junction box 1 has a waterproof cover 2 disposed, for example, in an engine room. The waterproof cover 2 includes a lower cover 2a fixed to a vehicle body (not shown), and the lower cover 2a. The upper cover 2b is detachably provided on the lower cover 2a. A pair of guide rail grooves 3 and 3 are provided on the inner surface of the lower cover 2a facing each other, and the pair of guide rails 5 and 5 of the junction box body 4 are engaged with the pair of guide rail grooves 3 and 3. .
[0003]
One surface of the junction box body 4 is formed as a maintenance / inspection surface 4a, and a fuse, a relay, a connector, and the like are mounted on the maintenance / inspection surface 4a. The connection box body 4 slides in the vertical direction S when the pair of guide rails 5 and 5 are guided by the pair of guide rail grooves 3 and 3 of the lower cover 2a. The cover 2a is provided so that it can be inserted and pulled out.
[0004]
On the other hand, as shown in FIG. 9, peripheral parts 6 are arranged at appropriate positions around the electrical junction box 1, and the visual range in which the maintenance inspector can visually recognize the maintenance inspection surface 4 a of the junction box body 4 is limited. Therefore, the orientation of the connection box body 4 is set so that the maintenance / inspection surface 4a of the connection box body 4 is perpendicular to the viewing direction A. By setting the orientation of the junction box body 4 in this way, the maintenance inspection surface 4a can be visually recognized at the most visible angle at the position where the junction box body 4 is pulled out from the lower cover 2a (the phantom line position in FIG. 9). The replacement work of fuses and the like can be easily performed.
[0005]
[Problems to be solved by the invention]
By the way, since the peripheral component 6 of the electrical junction box 1 differs depending on the vehicle type and vehicle grade or the installation location of the electrical junction box 1, the viewing direction A with respect to the junction box body 4 pulled out from the lower cover 2 a is also different. It is necessary to change the direction of the junction box body 4 in correspondence with the visual direction A. For example, when there is a peripheral part 7 indicated by a virtual line in FIG. 9, the visual inspection direction of the maintenance inspector is changed from direction A to direction B. Some measure to change the direction was necessary.
[0006]
Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electrical junction box that can easily change the orientation of the junction box body to a desired direction.
[0009]
[Means for Solving the Problems]
The invention of claim 1 is provided with a guide rail groove on one of the inner surface side of the cover and the outer surface side of the junction box body, and on the other side, a guide rail guided to the guide rail groove through the frame , In the electrical junction box in which the connection box main body is provided so as to be freely inserted and drawn into the cover by moving the guide rail along the guide rail groove, a guide rail groove is provided on the inner surface side of the cover, and said frame is mounted on the outer peripheral side of the junction box body, wherein the guide rail is provided on the frame, the guide rails is characterized in that a predetermined angle inclined with respect to the junction box body.
[0010]
In this electrical connection box, a frame for mounting on the outer peripheral side of the junction box body, be replaced to one having a desired direction of gas Idoreru, easy orientation predetermined direction of the connection box body without replacing the connection box body itself Variable.
[0013]
A second aspect of the invention is the electrical junction box according to the first aspect, wherein a fuse is mounted on a maintenance inspection surface of the junction box body.
[0014]
In this electrical junction box, in addition to the operation of the first aspect of the invention, the maintenance inspection surface of the junction box main body drawn out from the cover is arranged at an angle that is most easily visible.
[0015]
A third aspect of the present invention, an electrical connection box according to claim 1, the resilient arm lock portion is provided on the frame, the elastic arm lock portion is engaged with the elastic deformation in the locking projection of the connection box body It is attached by attaching.
[0016]
In this electrical junction box, in addition to the operation of the first aspect of the invention, the frame can be attached by inserting the frame on the outer peripheral side of the junction box body.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0018]
1 to 8 show an embodiment of the present invention. FIG. 1 is a cross-sectional view of an electrical junction box in which a junction box body is disposed at a storage position in the waterproof cover. FIG. FIG. 3 is a cross-sectional view of the electrical junction box arranged at the pulled-out position, FIG. 3 is a cross-sectional view of the electrical junction box in a state where the junction box body is completely pulled out from the waterproof cover and moved to the vicinity of the maintenance inspector. Is an exploded perspective view of the electrical connection box, FIG. 5 is a partially broken perspective view showing a storage state of the connection box body, FIG. 6 is an exploded perspective view of the connection box body, and FIG. 7A is a wire harness in the lower cover. FIG. 7B is a rear view of the connection box main body in the pulling direction showing a state where the wire harness is fixed, and FIG. 8 is a guide rail groove in the lower cover and a guide of the frame. It is a side view which shows the engagement state with a rail.
[0019]
As shown in FIGS. 1 to 3, the electrical connection box 10 is disposed in an engine room (not shown), and a cowl top 11 and a relay box 12, which are peripheral components, are disposed around the electrical connection box 10. . The cowl top 11 is disposed above the electrical junction box 10, and the cowl top 11 regulates the front in the pull-out direction of a junction box main body 14 to be described later to a predetermined size. The relay box 12 projects in front of the electrical junction box 10 and slightly above the upper surface of the electrical junction box 10, and only the space between the relay box 12 and the cowl top 11 is the electrical junction box. It is a space that can be used for 10 maintenance inspections. The direction viewed by the maintenance inspector through this space is the visual recognition direction D toward the connection box main body 14.
[0020]
As shown in FIG. 4, the electrical junction box 10 is mainly composed of a synthetic resin substantially rectangular waterproof cover (cover) 13 and a synthetic resin junction box main body 14 accommodated in the waterproof cover 13. It is configured.
[0021]
The waterproof cover 13 is fixed to a vehicle body (not shown), has a rectangular lower cover 15 whose upper surface is entirely opened, covers the upper surface of the lower cover 15, and is detachably provided on the lower cover 15. An upper cover 16 is included. Harness cutouts 17 opened at the upper end are formed at two locations of the lower cover 15, and a semicircular harness lower protective wall 18 is projected from the lower end of each harness cutout 17. Yes. Slide engagement grooves 17a are formed on the left and right end surfaces of the harness cutout portion 17, and the slide auxiliary covers 19 are slidably provided by being engaged with the slide engagement grooves 17a.
[0022]
Each slide auxiliary cover 19 protrudes integrally from a notch portion 17 for the harness into which the wire harness WH is inserted, a plate portion 19a that covers a portion other than the harness accommodating space in the harness lower protective wall 18, and a lower end of the plate portion 19a. And a semicircular harness upper protective wall 19b. The harness lower protective wall 18 and the harness upper protective wall 19b form a substantially cylindrical harness insertion port, and one end side of the wire harness WH is accommodated in the waterproof cover 13 from each harness insertion port. The two front and rear harness insertion ports are located on the maintenance inspection surface 14a side and the opposite surface side of the maintenance inspection surface 14a with respect to the connection box main body 14 that slides.
[0023]
Further, a pair of guide rail grooves 20 and 20 are provided on the inner surfaces of the lower cover 15 facing each other, and the pair of guide rail grooves 20 and 20 are arranged in the vertical direction (up and down direction) as shown in FIG. ) And the arc-shaped round groove 20b whose diameter gradually increases toward the inlet. Further, locking long grooves 21 are respectively formed inside the pair of guide rail grooves 20, 20, and locking protrusions 21 a are provided in the vicinity of the inlets of the pair of locking long grooves 21, 21.
[0024]
A bracket portion 22 projects from the front side of the lower cover 15, and the relay box 12 is fixed using the bracket portion 22.
[0025]
As shown in FIGS. 5 and 6, the junction box main body 14 has a flat rectangular parallelepiped shape, and a front surface thereof is formed on a maintenance inspection surface 14a, and a large number of fuses are attached to the maintenance inspection surface 14a. A portion 23, a large number of relay mounting portions 24, and a large number of connector mounting portions 25 are provided. In the large number of fuse mounting portions 23, groups arranged in parallel in one row are arranged at two locations, and each row extends in the left-right direction of the junction box body 14. In addition, in the large number of relay mounting portions 24, groups arranged in parallel in one row are arranged at two locations, and each row extends in the left-right direction of the junction box body 14.
[0026]
Further, a part of one side of the maintenance inspection surface 14a has a portion where the fuse mounting portion 23, the relay mounting portion 24, and the connector mounting portion 25 are not arranged, and a harness for detachably mounting the harness clip 26 to this portion. A fixing hole 27 is provided. The wire harness WH is attached to the junction box main body 14 via the harness clip 26, and thereby the routing route within the waterproof cover 13 of the wire harness WH is regulated. First, a rough routing route of the wire harness WH will be described. Among the wire harnesses WH inserted into the waterproof cover 13, the wire harness WH mounted on the connector mounting portion 25 of the connection box body 14 is shown in FIG. 7 (a) and 7 (b), it is inserted from a harness insertion port located on the opposite side of the maintenance / inspection surface 14a of the connection box main body 14, and is opposite to the maintenance / inspection surface 14a of the connection box main body 14. The tip of the wire harness WH led to the maintenance / inspection surface 14a side of the connection box main body 14 from the rear surface 14b side of the connection box main body 14 in the pulling direction of the connection box main body 14 through the space is connected to each connector mounting portion. 25. By fixing the wired harness WH thus wired to the connection box body 14 side with the harness clip 26, the routing route of the wire harness WH on the rear surface 14b side in the pulling direction of the connection box body 14 is restricted in an oblique direction. In addition, by restricting with such a wiring path, the wiring path in which the wire harness WH inserted from the harness insertion port is largely bent on the opposite side of the maintenance inspection surface 14a of the junction box body 14 On the maintenance inspection surface 14a side of the connection box main body 14, the wiring path that leads to each connector mounting part 25 through a path that does not pass above the fuse mounting part 23 is regulated.
[0027]
As shown in FIG. 6, a rectangular frame 30 is attached to the outer peripheral side of the junction box main body 14. Elastic arm lock portions 31 are provided at appropriate positions of the frame 30, and each elastic arm lock portion 31 is attached to the lock protrusion 32 of the connection box main body 14 by being elastically deformed. A pair of guide rails 33, 33 that are engaged with the pair of guide rail grooves 20, 20 of the lower cover 15 are provided on the left and right side surfaces of the frame 30, and the pair of guide rails 33, 33 is a pair of guide rails 33, 33. By being guided by the guide rail grooves 20, 20, the connection box main body 14 slides in the lower cover 15, and the connection box main body 14 is provided in the lower cover 15 so that it can be inserted and pulled out by this sliding movement. As the frame 30, a pair of guide rails 33, 33 having a predetermined inclination angle α is used. That is, the inclination of the pair of guide rails 33, 33 is set to an inclination angle α such that the direction of the maintenance inspection surface 14a of the connection box body 14 is orthogonal to the visual recognition direction D, The maintenance / inspection surface 14a of the box body 14 slides in the lower cover 15 while being inclined by the inclination angle α with respect to the sliding direction S.
[0028]
Further, the frame 30 is provided with a lock projection 34 in the direction of each guide rail, and the pair of lock projections 34, 34 are engaged with the engagement projections 21 a of the lower cover 15. As a result, the junction box main body 14 accommodated in the lower cover 15 is locked to the lower cover 15.
[0029]
Next, maintenance and inspection work such as fuses in the electrical junction box 10 having the above-described configuration will be described. In the state of FIG. 1, the maintenance inspector (operator) removes the upper cover 16 from the lower cover 15. As shown in FIG. 1, the maintenance / inspection surface 14a of the junction box body 14 is inclined at an inclination angle α with respect to the slide direction S, and the maintenance / inspector can visually recognize the maintenance / inspection surface 14a of the junction box body 14. A person can easily check the state of the fuse and replace the fuse.
[0030]
Next, in order to replace the relay, the junction box body, etc., the lock on the lower cover 15 is released and the junction box body 14 is pulled out from the lower cover 15. The connection box body 14 is pulled out in the sliding direction S when the pair of guide rails 33, 33 are guided by the pair of guide rail grooves 20, 20 of the lower cover 15. As shown in FIG. 2, the drawn out connection box body 14 is inclined at an inclination angle α with respect to the slide direction S, and the maintenance inspection surface 14 a of the connection box body 14 is orthogonal to the operator's visual recognition direction D. Therefore, as shown in FIG. 2, it is possible to easily check the state of the fuse on the maintenance inspection surface 14a and replace the fuse even in the pulled-out state. In addition, since the connection box body 14 in the pulled-out state can change the orientation of the connection box body 14 by the rounded groove portion 20b of the guide rail groove 20, the operator can work with the connection box body 14 directed in a direction in which the worker can easily work. It can be carried out.
[0031]
Next, the harness clip 26 is removed from the connection box main body 14 pulled out from the lower cover 15, and the path restriction of the wire harness WH is released to make it free. Here, since the connection box main body 14 in the pulled-out state can change the direction of the connection box main body 14 by the rounded groove portion 20b of the guide rail groove 20 as described above, the maintenance inspector can easily remove the harness clip 26. The harness clip 26 can be removed by directing the connection box body 14 to the side.
[0032]
Next, the connection box main body 14 is completely removed from the lower cover 15 by further pulling it out from the lower cover 15 while inclining the connection box main body 14 in the pulled-out state toward the maintenance inspector. Then, as shown in FIG. 3, the connection box main body 14 taken out from the lower cover 15 is moved to a position close to the maintenance inspector, and complicated maintenance inspection work (replacement of relays, connection box main bodies, etc.) is performed. When the operation is completed, the connection box body 14 is returned to the waterproof cover 13 by the reverse procedure described above, and the operation is completed.
[0033]
By the way, the visual recognition direction D with respect to the connection box main body 14 pulled out from the lower cover 15 differs depending on the vehicle type, vehicle grade, or the installation location of the electric connection box 10, and the connection box main body 14 corresponds to the visual recognition direction D. It is necessary to change the direction of the maintenance inspection surface 14a. In the electrical junction box 10, such a change in the orientation of the junction box main body 14 can be dealt with by replacing the frame 30 having a pair of guide rails 33, 33 with a desired inclination angle α. Accordingly, the maintenance / inspection surface 14a of the connection box main body 14 can be easily changed in a desired direction without exchanging the connection box main body 14 itself, so that the change in the inclination direction of the connection box main body 14 can be performed at a very low cost. it can.
[0034]
Further, the frame 30 is provided with an elastic arm lock portion 31, and this elastic arm lock portion 31 is attached by being elastically engaged with the lock protrusion 32 of the connection box body 14. If the frame 30 is inserted to the side, the frame 30 is attached, and the attachment work of the frame 30 is easy.
[0035]
In the above embodiment, the guide rail groove 20 is provided on the inner surface side of the lower cover 15, and the guide rail 33 is provided on the frame 30 of the connection box main body 14. The guide rail 33 may be provided, and the guide rail groove 20 may be provided in the frame 30. Of course, the guide rail groove 20 or the guide rail 33 may be provided directly on the junction box body 14 without the frame 30 interposed therebetween.
[0037]
【The invention's effect】
As described above , according to the first aspect of the present invention, if the frame attached to the outer peripheral side of the junction box body is replaced with one having a guide rail in a desired direction, the orientation of the junction box body can be changed. The direction of the connection box body can be easily changed to a desired direction without replacing the box body itself.
[0039]
According to the invention of claim 2 , since the maintenance inspection surface of the junction box main body drawn out from the cover is arranged at an angle that is most easy to see, it is possible to easily check the state of the fuse and replace the fuse.
[0040]
According to the invention of claim 3 , since the frame can be attached simply by inserting the frame into the outer peripheral side of the junction box body, the frame can be easily attached.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an electrical junction box according to an embodiment of the present invention in which a junction box body is disposed at a storage position in a waterproof cover.
FIG. 2 is a cross-sectional view of an electric junction box according to an embodiment of the present invention, in which the junction box body is disposed at a position where the junction box body is pulled out from the waterproof cover.
FIG. 3 is a cross-sectional view of the electrical junction box in a state in which the junction box body is completely pulled out from the waterproof cover and moved to the vicinity of the maintenance inspector according to the embodiment of the present invention.
FIG. 4 is an exploded perspective view of an electrical junction box according to an embodiment of the present invention.
FIG. 5 is a partially broken perspective view showing the storage state of the junction box body according to the embodiment of the present invention.
FIG. 6 is an exploded perspective view of a junction box body according to the embodiment of the present invention.
7A is a plan view of the lower cover showing a state in which the wire harness is housed in the lower cover, and FIG. 7B is a connection box body showing the state in which the wire harness is fixed. FIG.
FIG. 8 is a side view showing an engagement state between the guide rail groove in the lower cover and the guide rail of the frame according to the embodiment of the present invention.
FIG. 9 is a cross-sectional view of a prior art electrical junction box.
[Explanation of symbols]
10 Electrical junction box 13 Waterproof cover (cover)
14 Connection box body 14a Maintenance inspection surface 20 Guide rail groove 30 Frame 31 Elastic arm lock portion 32 Lock protrusion 33 Guide rail WH Wire harness

Claims (3)

A guide rail groove is provided on one of the inner surface side of the cover and the outer surface side of the junction box body, and a guide rail guided to the guide rail groove through the frame is provided on the other side. In the electrical junction box provided so that the junction box body can be inserted and pulled out in the cover by moving along
The guide rail groove is provided on the inner surface side of the cover, and the frame is attached to the outer peripheral side of the junction box body, wherein the guide rail is provided on the frame, predetermined for this guide rail the connection box body An electrical junction box that is inclined at an angle. The electrical junction box according to claim 1 ,
An electrical junction box, wherein a fuse is mounted on a maintenance inspection surface of the junction box body. The electrical junction box according to claim 1 ,
Electrical connection box, characterized in that attached by the elastic arm lock portion is provided in the frame, this resilient arm lock portion are engaged by elastic deformation into the lock projection of the connection box body.

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