JP4008780B2 - 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, the one shown in FIG. 11 is in the development stage. As shown in FIG. 11, 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. The upper cover 2b covers the upper surface opening of 2a and 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 main body 4 slides in the 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. It is provided in 2a so that it can be inserted and pulled out.
[0004]
In the maintenance / inspection work of the electrical junction box 1, the fuse state of the maintenance / inspection surface 4a can be confirmed or replaced by pulling out the junction box body 4 from the lower cover 2a. Further, the relay box can be exchanged by completely pulling out the connection box body 4 and taking out the drawn connection box body 4 close to the maintenance person. As described above, the sliding type electrical junction box 1 is installed in a place where the peripheral member 6 is disposed above the upper cover 2b and the maintenance / inspection space of the junction box body 4 cannot be secured only by opening the upper cover 2b. There is an advantage that can be.
[0005]
By the way, a wire harness (not shown) is routed in the waterproof cover 2, and this wire harness is fixed to the waterproof cover 2 via a harness clip or the like. The wiring path of the wire harness is regulated by fixing the wire harness in this way.
[0006]
[Problems to be solved by the invention]
However, in the above-described sliding-type electrical junction box 1, the junction box body 4 slides relative to the waterproof cover 2, so the wire harness must be fixed so as not to hinder the sliding movement of the junction box body 4. Therefore, the wire harness connected to the junction box body 4 cannot be fixed to the cover 2 near the tip. Therefore, the routing route near the tip of the wire harness connected to the junction box body 4 cannot be reliably regulated. Further, if the routing route near the tip of the wire harness connected to the junction box body 4 cannot be reliably controlled, the sliding movement of the junction box body 4 and the removal movement out of the waterproof cover 2 may be hindered. May come into contact with other parts and cause damage to other parts.
[0007]
Therefore, the present invention has been made to solve the above-described problems, and the wiring path on the distal end side of the wire harness connected to the connection box body can be surely provided without affecting the sliding movement of the connection box body. An object of the present invention is to provide an electrical junction box that can be regulated.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, 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 by the guide rail groove is provided on the other side. A wire harness that is routed in the cover and connected to the connection box main body in the electric connection box in which the connection box main body is provided so as to be freely inserted and drawn into the cover by moving along the groove. Is fixed to the connection box main body side by a harness fixing means, and a connector mounting portion to which the tip end side of the wire harness is connected and a fuse mounting portion to which a fuse is mounted are provided on the maintenance inspection surface of the connection box main body, harness fixing means comprises a harness regulating plates inclined obliquely to the rear surface of the pull-out direction of the junction box body, and, et al provided in a central position , As well as regulate the routing path of the wire harness passing through the rear side of the drawing direction of the junction box body in an oblique direction with respect to the longitudinal direction of the rear surface of the junction box body in the harness regulating plate, the wire harness is said The wiring path is regulated so as to lead to the connector mounting part through a path that does not pass above the fuse mounting part.
[0009]
In this electrical junction box, the wire harness is fixed to the side of the junction box body that is slid, so that the vicinity of the tip of the wire harness is fixed, and the wire harness moves together with the junction box body in a state in which the tip side is restricted. To do. In particular, the situation where the fuse cannot be seen by the wire harness is prevented. Further, the rear side space in the pulling direction of the junction box main body is also an effective housing space for the wire harness, and it is easy to store a long harness surplus length.
[0014]
The invention according to claim 2 is the electrical junction box according to claim 1 , wherein the harness fixing means is provided on a harness clip that restrains the wire harness, the junction box body, and the harness clip is It is comprised from the harness fixing | fixed part which has the said harness control plate fixed detachably.
[0015]
In this electrical junction box, in addition to the effect of the invention of claim 1 , when removing the junction box body from the cover, the harness clip is removed from the junction box body to release the restriction of the wiring route of the wire harness. Becomes free and can be pulled out further, facilitating the work of attaching and detaching the connector.
[0016]
The invention according to claim 3 is the electrical junction box according to claim 1 or claim 2 , wherein the wire harness is inserted into the cover from the opposite side of the maintenance inspection surface of the junction box body, and the junction box It is arranged through the space opposite to the maintenance / inspection surface of the main body from the rear surface side in the pulling direction of the junction box main body to the maintenance / inspection surface side.
[0017]
In this electrical junction box, in addition to the effects of the invention of claim 1 or claim 2 , the wire harness is accommodated so as to surround the periphery of the junction box body.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0019]
1 to 10 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 a waterproof cover. FIG. FIG. 3 is a cross-sectional view of the electrical connection box arranged at the position pulled out by sliding movement. FIG. 3 shows the electrical connection in which the connection box body is completely pulled out from the waterproof cover and the maintenance person can view the rear surface of the connection box body. 4 is a cross-sectional view of the electric connection box, FIG. 4 is an exploded perspective view of the electric connection box, and FIG. 5 is an exploded perspective view of the electric connection box. 6 is a partially broken perspective view showing the storage state of the junction box body, FIG. 7 is a perspective view seen from the rear side in the pulling direction of the junction box body, FIG. 8 is an exploded perspective view of the junction box body, FIG. a) shows the accommodation state of the wire harness in the lower cover FIG. 9B is a plan view of the cover, FIG. 9B is a rear view of the connection box body in the pulling direction showing the state where the wire harness is fixed, and FIG. 10 is an engagement state between the guide rail groove in the lower cover and the guide rail of the frame. FIG.
[0020]
As shown in FIGS. 1 to 4, 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 direction D toward the junction box body 14 drawn from the lower cover 15.
[0021]
As shown in FIGS. 5 and 6, the electrical junction box 10 includes a synthetic resin substantially rectangular waterproof cover (cover) 13 and a synthetic resin junction box main body 14 accommodated in the waterproof cover 13. And is composed mainly of.
[0022]
The waterproof cover 13 is fixed to a vehicle body (not shown), a rectangular lower cover 15 whose upper surface is entirely opened, and an upper surface that covers the upper surface of the lower cover 15 and is detachably provided on the lower cover 15. And a cover 16. 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. ing. 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.
[0023]
Each slide auxiliary cover 19 projects integrally with a plate portion 19a that covers the harness cutout portion 17 into which the wire harness WH is inserted and a harness housing 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 openings 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.
[0024]
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 a vertical direction (up and down direction) as shown in FIG. ) And a circular arc-shaped groove portion 20b whose diameter gradually increases as the inlet side approaches 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.
[0025]
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.
[0026]
As shown in FIGS. 7 and 8, 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. 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, fuse 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.
[0027]
A rectangular synthetic resin 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 sides of the frame 30, and the pair of guide rails 33, 33 is a pair. The connection box body 14 slides in the lower cover 15 by being guided by the guide rail grooves 20, 20, and the connection box body 14 is provided in the lower cover 15 so as to be freely inserted and pulled out by this sliding movement. The inclination of the pair of guide rails 33, 33 is set to an inclination angle α in which the direction of the maintenance inspection surface 14a of the connection box main body 14 is orthogonal to the visual recognition direction D, and the maintenance inspection of the connection box main body 14 is performed. The surface 14a slides in the lower cover 15 in a state where it is inclined with respect to the sliding direction S by an inclination angle α.
[0028]
Further, the frame 30 is provided with a lock projection 34 in the direction of each guide rail 33, and the pair of lock projections 34, 34 are engaged with the engagement projection 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]
A wire harness WH is fixed to the rear surface 30b of the frame 30 in the pulling direction (a part of the rear surface 14b of the connection box body 14) by the harness fixing means 35. The harness fixing means 35 includes a harness clip 36 that restrains the wire harness WH and a harness fixing portion 37 that protrudes from the rear surface 30b in the pulling direction of the frame 30 at the central position and attaches the harness clip 36 in a detachable manner. I have. The harness clip 36 is a known one having a portion for fastening the converged wire harness WH and a portion engaged by elastic deformation. The harness fixing portion 37 has a harness restricting plate 37a inclined in an oblique direction with respect to the rear surface 30b of the frame 30, and a clip engaging hole 37b is formed in the harness restricting plate 37a. And the wire harness WH is attached to the connection box main body 14 side by engaging the harness clip 36 which restrained the wire harness WH with the clip latching hole 37b of the harness fixing | fixed part 35, Thereby, the said wire harness WH The route in the waterproof cover 13 is regulated.
[0030]
Specifically, the wire harness WH to be mounted on the connector mounting portion 25 of the connection box body 14 among the wire harness WH inserted into the waterproof cover 13 is shown in FIGS. 1, 9A, and 9B. As shown in FIG. 4, the connection box body 14 is inserted from a harness insertion port located on the opposite side of the maintenance / inspection surface 14a of the connection box body 14, and the connection box body 14 is pulled out through the space on the opposite side of the maintenance / inspection surface 14a of the connection box body 14. The front end of the wire harness WH led to the maintenance / inspection surface 14a side of the junction box body 14 from the rear surface 14b side in the direction is connected to each connector mounting portion 25.
[0031]
And the harness fixing | fixed part 35 makes the wiring path | route diagonally with respect to the longitudinal direction of the rear surface 14b of the connection box main body 14 by making the wire harness WH which passes the rear surface 14b side of the connection box main body 14 along the harness control plate 37a. The wire harness WH inserted from the harness insertion port is greatly bent on the opposite side of the maintenance inspection surface 14a of the connection box main body 14 by being restricted in the direction and restricted by such a routing route. The wiring path is restricted to a wiring path that leads to each connector mounting part 25 through a path that does not pass above the fuse mounting part 23 on the maintenance inspection surface 14a side of the connection box main body 14.
[0032]
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 removes the upper cover 16 from the lower cover 15, releases the lock on the lower cover 15, and pulls the connection box main body 14 out of 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 maintenance inspection surface 14 a of the drawn out connection box body 14 is inclined at an inclination angle α with respect to the sliding direction S, and the maintenance of the connection box body 14 is performed with respect to the visual inspection direction D of the maintenance inspector. Since the inspection surface 14a is in a direction perpendicular to each other, as shown in FIG. 2, the maintenance inspector can easily check the state of the fuse and replace the fuse.
[0033]
Next, in order to perform complicated maintenance and inspection work (replacement of relay or junction box body 14 etc.), as shown in FIG. 3, the junction box body 14 pulled out from the lower cover 15 is viewed from the back of the maintenance inspector. And the rear face 14b in the pulling direction of the junction box body 14 is directed toward the maintenance inspector, and the harness clip 36 is removed. The wire harness WH is released from the path restriction and becomes free.
[0034]
Next, in order to change the direction of the connection box main body 14, the connection box main body 14 is inserted into the lower cover 15 a little, and this time, the front side in the pull-out direction of the connection box main body 14 is pulled out. Then, as shown in FIG. 4, the pulled out connection box main body 14 is moved to a position close to the maintenance inspector, and complicated maintenance inspection work (replacement of the relay or the connection box main body 14) is performed. When the work is completed, the connection box body 14 is returned to the waterproof cover 13 by the reverse procedure described above to complete the operation.
[0035]
As described above, in this electrical junction box 10, since the wire harness WH is fixed to the frame 30 of the connection box main body 14 that slides, the vicinity of the tip end of the wire harness WH can be fixed, and the tip end side of the wire harness WH can be fixed. Since it moves together with the connection box main body 14 in a state where the wiring is restricted, the wiring path on the distal end side of the wire harness WH connected to the connection box main body 14 is surely provided without affecting the sliding movement of the connection box main body 14. Can be regulated.
[0036]
Further, the maintenance inspection surface 14a of the junction box main body 14 is provided with a connector mounting portion 25 to which the distal end side of the wire harness WH is connected, a fuse mounting portion 23 to which a fuse is mounted, and the like. Since the wiring path is regulated so that the WH leads to the connector mounting part 25 through a path that does not pass above the fuse mounting part 23, it is possible to reliably prevent a situation in which the fuse cannot be seen by the wire harness WH. For this reason, it is possible to easily check the state of the fuse.
[0037]
Further, the harness fixing portion 37 is provided on the rear surface 14b in the pulling direction of the connection box main body 14 and at the center position, and obliquely routes the wiring route of the wire harness WH passing through the rear surface 14b side of the connecting box main body 14 in the pulling direction. Since the space on the rear surface 14b side in the pulling-out direction of the junction box body 14 is also an effective accommodation space for the wire harness WH, it contributes to accommodating the extra length of the wire harness WH in a small space.
[0038]
Furthermore, the harness fixing means 35 is composed of a harness clip 36 that restrains the wire harness WH, and a harness fixing portion 37 that is provided on the connection box main body 14 side and that the harness clip 36 is detachably fixed. When the connection box main body 14 is taken out from the lower cover 15, the wire harness WH can be pulled out in a free state by removing the harness clip 36 from the connection box main body 14 and releasing the restriction of the wiring path of the wire harness WH. it can. For this reason, the extra length of the wire harness WH can be shortened, and the size of the wire harness WH can be shortened, the harness accommodating space can be reduced, and the like. If the wire harness WH can be sufficiently long, the connection box body 14 can be removed without removing the harness clip 36 when the connection box body 14 is removed from the lower cover 15. The operation of taking out the connection box main body 14 can be simplified.
[0039]
Furthermore, the wire harness WH is inserted into the lower cover 15 from the opposite side of the maintenance / inspection surface 14a of the connection box body 14 and pulled out of the connection box body 14 through the space opposite to the maintenance / inspection surface 14a of the connection box body 14. Since the wiring is routed from the rear surface 14b side to the maintenance / inspection surface 14a side, the wire harness WH can be accommodated so as to surround the connection box main body 14. For this reason, the extra length of the wire harness WH can be accommodated in the waterproof cover 13 in a small space without difficulty.
[0040]
In the above embodiment, the harness fixing portion 37 is provided on the frame 30 attached to the outer periphery of the connection box main body 14, but it may be provided on the connection box main body 14 itself. Further, 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. On the contrary, the guide rail 33 is provided on the inner surface side of the lower cover 15. The guide rail groove 20 may be provided in the frame 30.
[0041]
【The invention's effect】
As described above, according to the invention of claim 1, the wire harness connected to the connection box body is fixed to the connection box body side by the harness fixing means. Since the wire harness is fixed, the vicinity of the front end of the wire harness can be fixed, and the wire harness can be moved together with the junction box body in a state where the front end side of the wire harness is restricted. Therefore, it is possible to reliably regulate the routing path on the distal end side of the wire harness connected to the connection box body without hindering the sliding movement of the connection box body. In particular, since it is possible to prevent a situation where the fuse cannot be seen by the wire harness, it is possible to easily check the state of the fuse. Moreover, since the rear side space of the connection box main body in the pulling direction also becomes an effective housing space for the wire harness, it contributes to housing the extra length of the wire harness in a small space.
[0044]
According to invention of Claim 2 , when taking out a connection box main body from a cover, a wire harness can be pulled out in a free state by removing a harness clip from a connection box main body and releasing the restriction | limiting of the wiring route of a wire harness. Therefore, the extra length of the wire harness can be shortened, and the wire harness can be shortened, the harness accommodating space can be reduced, and the like.
[0045]
According to invention of Claim 3 , since a wire harness is accommodated so that the circumference | surroundings of a connection box main body may be surrounded, the extra length of a wire harness can be accommodated in a cover in a small space without difficulty.
[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 electrical 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 by sliding movement.
FIG. 3 is a cross-sectional view of the electrical junction box according to an embodiment of the present invention, in which the junction box body is completely pulled out from the waterproof cover and is positioned to show the rear surface of the junction box body to the maintenance inspector.
FIG. 4 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 according to the embodiment of the present invention.
FIG. 5 is an exploded perspective view of an electrical junction box according to an embodiment of the present invention.
FIG. 6 is a partially broken perspective view showing the storage state of the junction box body according to the embodiment of the present invention.
FIG. 7 is a perspective view showing the embodiment of the present invention as seen from the rear side in the pulling direction of the connection box body.
FIG. 8 is an exploded perspective view of a junction box body according to the embodiment of the present invention.
9A and 9B show an embodiment of the present invention, in which FIG. 9A is an inner view of the lower cover showing a state in which the wire harness is housed in the lower cover, and FIG. 9B is a junction box body showing a state in which the wire harness is fixed. FIG.
FIG. 10 is a side view showing the 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. 11 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 14b Rear surface 20 Guide rail groove 23 Fuse mounting portion 25 Connector mounting portion 33 Guide rail 35 Harness fixing means 36 Harness clip 37 Harness fixing portion 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 by the guide rail groove is provided on the other side, and the guide rail is moved along the guide rail groove. In the electrical junction box provided with the junction box main body inserted and pulled out in the cover,
A wire harness that is routed in the cover and connected to the connection box body is fixed to the connection box body side by harness fixing means, and the front end side of the wire harness is on the maintenance inspection surface of the connection box body. A connector mounting portion to be connected and a fuse mounting portion to which a fuse is mounted are provided, and the harness fixing means has a harness regulating plate inclined in an oblique direction with respect to a rear surface in the pulling direction of the connection box body, and In addition, the wiring path of the wire harness that is provided at the center position and passes through the rear side of the connection box body in the pulling direction is regulated by the harness regulation plate in an oblique direction with respect to the longitudinal direction of the rear surface of the connection box body. , routing path to guide through the path in which the wire harness does not pass above the fuse mounting portion to the connector mounting portion Electrical junction box, characterized in that the regulation. The electrical junction box according to claim 1 ,
The harness fixing means includes a harness clip that restrains the wire harness, and a harness fixing portion that is provided on the connection box main body side and has the harness regulation plate to which the harness clip is detachably fixed. An electrical junction box characterized by that. The electrical junction box according to claim 1 or claim 2 ,
The wire harness is inserted into the cover from the opposite side of the maintenance / inspection surface of the junction box body, passes through the space opposite to the maintenance / inspection surface of the junction box body, and the rear side of the junction box body in the pulling direction. An electrical junction box, wherein the electrical junction box is further wired on the maintenance inspection surface side.

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