JP4139313B2 - Circuit board storage structure and electrical junction box - Google Patents

Description

  The present invention relates to a cover lock structure in an electrical junction box for making an electrical junction box mounted on an automobile or the like compact.

  In recent years, miniaturization of electrical junction boxes has been demanded by automobile parts assembly manufacturers and the like, and electrical junction boxes have been made smaller and thinner. The electrical junction box main body in which various electronic components are housed in the case tends to be thinned, and the cover attached to the electrical junction box main body is also being thinned.

  However, the cover of the thin electrical junction box is formed in a substantially flat plate shape, and the cover itself lacks rigidity. When such a cover is attached to the main part of the electrical junction box, the cover itself is insufficient in rigidity, so that the cover can be attached to the main part of the electrical junction box with the center part of the cover raised. there were. Also, depending on the design specifications of the cover, the cover may be attached to the main part of the electrical junction box with the cover turned up.

  When an electrical connection box having such a cover is assembled, for example, in the appearance inspection of the electrical connection box, it is determined that the cover is not securely attached to the main part of the electrical connection box, In some cases, it was determined that the electrical junction box was assembled with foreign matter sandwiched between the cover and the cover. The electrical junction box determined in this way is reinspected without being shipped as a product, and as a result, there is a concern that the yield in the assembly process of the electrical junction box is reduced.

  Further, it has been required to satisfy the waterproof property for preventing water from entering the main portion of the electrical junction box in the cover formed in a substantially planar shape.

  An object of the present invention is to provide a lock structure for a cover in an electrical junction box that is waterproofed without being attached to the electrical junction box main body in a state where the central portion of the cover is lifted. And

To achieve the above object, the lock structure of the cover in an electric connection box according to claim 1 of the present invention, the outer cover in the electrical junction box electrical connection box is assembled by being mounted to the electrical junction box main body A lock structure, wherein the outer cover having a substantially rectangular shape in plan view is a pair of a substrate portion extending in a planar shape between two sets of opposite-side edges that are substantially orthogonal to each other, and a pair of the two sets of opposite-side edges. and a the opposite side edge portions in said substrate section a pair of side plate portions extending downward substantially perpendicular to, on the one opposite side edge portions of the outer cover, opposite side edge portions of the electrical junction box main body the locking portion to fit relates to the lock engaging portion is provided which is provided, arranged inside the center side and the inner surface side electrical junction box main body portion of the outer cover at the other opposite side edge portions near the outer cover Entangled with the engaged part Rukakarigo portion is provided, mounted on the by the engaging portion together relates Awaseraru the locking portion to the lock engaging portion is aligned relates to the engaged portion outer cover is the electrical junction box main body And an electrical junction box is assembled .

With the above configuration, the lock portion on one side edge portion of the outer cover having a substantially rectangular shape in plan view is engaged with the lock engaging portion on the side edge portion of the electric junction box main body having a substantially rectangular box shape in plan view. In addition, since the engaging portion provided on the center side and the inner surface side of the outer cover is engaged with the engaged portion provided inside the electric junction box main portion, the center of the outer cover with respect to the electric junction box main portion The lifting of the part is reliably prevented. Further, it is possible to prevent the outer cover from being turned up with respect to the main part of the electrical junction box.

Locking structure of the outer cover in the electrical connection box according to claim 2 is the lock structure of the outer cover in the electrical connection box according to claim 1, wherein the engaging portion is formed as comprising a flexible arm, the wherein the engaged portion is intended to comprise a hole provided on the back side of the connector constituting a prior SL electrical junction box main unit.

With this configuration, the engagement portion comprises a flexible arm portion provided on the outer cover, is combined with the engaged portion provided as comprising a hole on the back side of the connector constituting the electrical junction box main body from attachment and detachment of the outer cover to the electrical junction box main body it is easily carried out. Further, by this, the outer cover is securely attached to the electrical junction box main body portion, with respect to the electrical junction box main body, that the outer cover is turned over becomes to be more prevented.

Locking structure of the outer cover in the electrical connection box according to claim 3 is the locking structure of the outer cover in the electrical connection box according to claim 1 or 2, wherein the outer cover is attached to the electrical junction box main body, characterized in that said outer cover and the electrical junction box main unit when it is the state of normal position, the ribs surrounding the upper and lateral side of the engaging portion, provided about the periphery of the engaging portion And

With the above structure, configuration from above of the outer cover which is attached to the electrical junction box main body portion, water droplets penetrated into further electrical junction box main body portion falls within the engagement portion of the outer cover, the water drops, the electrical junction box main body It is prevented that a malfunction occurs in each component to be performed.

Locking structure of the outer cover in the electrical connection box according to claim 4 is the lock structure of the outer cover in the electrical connection box according to any one of claims 1 to 3, from the other opposite side edge portions, the electrical The rib which prevents that water permeates into the junction box main part is provided in this other side edge part, It is characterized by the above-mentioned.

With the above configuration, when the electric connection box is Himizu by ribs provided on the other opposite side edge of the outer cover, that water enters the inside of the electric connection box main unit, is suppressed.

As described above, according to the first aspect of the present invention, the lock portion that is engaged with the lock engaging portion provided on the opposite side edge portion of the electrical connection box main body portion is provided on one opposite side edge portion of the outer cover. provided, the provided inside of the engagement portion of the outer cover provided at the center side and the inner surface side on the other opposite side edge portions near the electrical junction box main body portion substantially perpendicular to said one of opposite sides edge of the outer cover Since the engaging portion is engaged, it is possible to prevent the central portion of the outer cover from being lifted with respect to the electric junction box main body. Further, it is possible to prevent the outer cover from being turned up with respect to the main part of the electrical junction box.

According to the second aspect of the present invention, it is possible to easily carry out the attachment and detachment of the outer cover to the electrical junction box main unit. This also, the outer cover can be reliably attached to the electrical junction box main body portion, with respect to the electrical junction box main body, that the outer cover is turned over, it is possible to further prevent.

According to the third aspect of the present invention, from above the outer cover attached to the electrical junction box main body portion, water droplets penetrated into further electrical junction box main body portion falls within the engagement portion of the outer cover, the water droplets, electrical It is possible to prevent a problem from occurring in each component constituting the connection box main body.

According to the fourth aspect of the invention, when the electric connection box is flooded by ribs provided on the other opposite side edge of the outer cover, the entry of water into the electrical junction box main body Can be suppressed.

  Hereinafter, an embodiment of a cover locking structure in an electrical junction box according to the present invention will be described in detail with reference to the drawings.

  1 is a perspective view showing a cover, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a plan view showing a main part of the electrical junction box, and FIG. 4 is a cover in the electrical junction box according to the present invention. FIG. 5 is a cross-sectional view taken along the line BB of FIG. 4 and FIG. 6 is an exploded perspective view showing an electrical junction box.

  Each direction of the electrical junction box main body 3 (FIG. 3) and the electrical junction box 1 (FIG. 4) will be described using the cover 50 (FIGS. 1 and 4). The cover 50 (FIGS. 1 and 4) is configured. One side plate portion 52m side is an upper side, and the other side plate portion 52n side constituting the cover 50 is a lower side. Note that the definition of “upper and lower” in this specification is for the sake of convenience for explaining the specification. For example, FIG. 6 is drawn based on an example of an assembly process when the electrical junction box 1 and the electrical junction box main body 3 are assembled.

  As shown in FIG. 6, the electrical junction box main body 3 includes a synthetic resin inner cover 80, an electronic control circuit board 40 mounted on the inner cover 80, and a synthetic resin board cover 20 covering the electronic control circuit board 40. An electronic circuit board 30 to be inserted into the board cover 20, a synthetic resin small cover 10 covering the board portion 31 of the electronic circuit board 30, a power block 100 to be attached to the inner cover 80, an external circuit A synthetic resin fuse cover 110 attached to the power block 100 to which each fuse 120 is attached in order to protect each fuse 120 from the object, and each connector block 60, 70 which is slid and engaged and fixed to the inner cover 80. The plurality of bus bars 90 arranged on the inner cover 80 between the connector blocks 60 and 70 and the connector blocks 60 Laminated on the inner cover 80 between 70, and each connector block 60 and 70, and power block 100, and is configured as comprising a wiring board 130 or interconnect module 140 is connected to the bus bars 90.

  A plurality of bus bars 90 are routed on the substrate portion 81 of the inner cover 80. The wiring board 130 is configured to include a plurality of electric wires (not shown). Each bus bar 90 is connected to the electric wire of the wiring board 130. The wiring module 140 is attached to the wiring board 130. Each bus bar 90 is connected to a connector 48 provided on the electronic control circuit board 40.

  As shown in FIGS. 5 and 6, the electronic control circuit board 40 is also equipped with a PCB connector 45 soldered to its circuit conductor (not shown). “PCB” is an abbreviation for “Printed Circuit Board”. The electronic control circuit board 40 is equipped with various electronic components 43 (FIG. 6), and the electronic control circuit board 40 is provided with an ECU. “ECU” means an electronic control device, and is an abbreviation of “Electronic Control Unit”. As shown in FIG. 5, the electronic control circuit board 40, so-called electronic unit 40, is attached to the inner cover 80 using a stopper 200 such as a screw 200.

  Various electronic components (not shown) such as capacitors, resistors, diodes, and ICs are mounted on the wiring board 31 of the electronic circuit board 30 (FIGS. 5 and 6). The electronic circuit board 30 is also provided with an ECU. The ECU of the electronic circuit board 30 is a gateway ECU. A gateway means a connection location for connecting a locally closed communication network and an external network. More specifically, a gateway is a functional unit that connects two computer networks having different network architectures to each other.

  The wiring module 140 includes a wiring board member 150, another wiring board member 160 overlaid on the wiring board member 150, and an insulating sheet 170 interposed between the wiring board member 150 and the other wiring board member 160. It is comprised as provided with. A module is a component of a device, a machine, or a system, and means a functional group. The insulating sheet 170 includes hard copper wires 155 (FIG. 3) provided on the wiring board member 150 (FIGS. 3 and 6) and hard copper wires 165 (FIG. 3 and FIG. 6) provided on the other wiring board members 160 (FIGS. 3 and 6). It works to insulate from Fig. 3). These are attached to the inner cover 80.

  A synthetic resin outer cover 50 (FIGS. 1, 2, and 6) that covers the connector blocks 60 and 70, the wiring module 140, and the like is attached to the electrical junction box main body 3 (FIG. 3), so that electrical connection is achieved. The box 1 is assembled (FIGS. 4 and 5). In this way, the lock structure of the cover 50 in the electrical junction box 1 is configured. As shown in FIG. 6, the box 5 constituting the electrical junction box 1 includes the inner cover 80, the substrate cover 20 attached to the inner cover 80, and the outer cover 50 attached to the inner cover 80. It is said that.

  As shown in FIGS. 1 and 2, a plurality of engaging portions 57 </ b> A and 57 </ b> B are provided on the central portion 55 side and the inner surface portion 51 a side of the substantially planar outer cover 50. Corresponding to the engaging portions 57A and 57B, the engaged portions 67 and 77 are provided in the interior 3h (FIGS. 3 and 5) of the electrical junction box main body 3 as shown in FIGS. It has been. As shown in FIGS. 3, 5, and 6, one engaged portion 67 is provided on the back surface portion 66 b of the connector housing 66 of one connector block 60 constituting the electrical junction box main body 3. The other engaged portion 77 is provided on the back surface portion 76 b of the connector housing 76 of the other connector block 70 constituting the electrical junction box main body 3. The engaging portions 57A and 57B provided on the outer cover 50 (FIGS. 1, 2 and 4) and the engaged portions 67 and 77 (FIG. 3) provided on the electrical junction box main body 3 (FIG. 3). , FIG. 6) (FIG. 5).

  Engaging portions 57A and 57B provided on the central portion 55 side and the inner surface portion 51a (FIG. 2) side of the substantially planar outer cover 50 (FIG. 1), and the compacted electrical junction box main portion 3 (FIG. 3). 5) is engaged with the engaged portions 67 and 77 (FIGS. 3 and 6) provided in the interior 3h, so that the central portion 55 of the outer cover 50 with respect to the electric junction box main body 3 as shown in FIG. Occurrence of lifting can be prevented. If the lock structure of the cover 50 in the electrical junction box 1 is configured, a large substantially planar outer cover 50 (FIGS. 1 and 6) is attached to the electrical junction box main body 3 (FIG. 3). Even so (FIG. 4), the central portion 55 of the outer cover 50 is prevented from floating with respect to the electrical junction box main body 3 (FIG. 5).

  As shown in FIG. 1, the outer cover 50 includes a substrate portion 51 and side plate portions 52 m and 52 n that are substantially orthogonal to the substrate portion 51. As shown in FIGS. 1 and 2, the engaging portions 57A and 57B projecting toward the inside of the substrate portion 51 of the outer cover 50 include a root portion 57j rising from the substrate portion 51 and a flexible arm extending from the root portion 57j. A portion 57k and an engaging protrusion 57n provided at the tip portion 57m of the flexible arm portion 57k are formed. The engagement protrusion 57n is formed to include an inclined sliding contact surface 57p and an engagement surface 57q.

  The engaged portion 67 provided in one connector block 60 (FIGS. 3 and 6) is an inclined slide of the engaging protrusion 57n constituting one engaging portion 57A of the outer cover 50 (FIGS. 1 and 2). An inclined sliding contact surface 67p (FIGS. 5 and 6) corresponding to the contact surface 57p, and an engaged surface 67q (FIG. 5) corresponding to the engagement surface 57q of the engagement protrusion 57n (FIGS. 1 and 2) It is formed as comprising. Further, the engaged portion 77 provided on the other connector block 70 (FIGS. 3 and 6) is an engagement projection 57n constituting the other engagement portion 57B of the outer cover 50 (FIGS. 1 and 2). An inclined slidable contact surface 77p (FIGS. 5 and 6) corresponding to the inclined slidable contact surface 57p and an engaged surface 77q (FIG. 5) corresponding to the engaging surface 57q of the engaging protrusion 57n (FIGS. 1 and 2). ).

  When the outer cover 50 (FIGS. 1, 2, and 6) is attached to the electrical junction box main body 3 (FIG. 3), the engaging portions 57A and 57B provided on the outer cover 50 (FIGS. 1 and 2) are removed. The constituting flexible arm portion 57k is bent from the root portion 57j, and the inclined sliding contact surface 57p of the engaging projection portion 57n of the flexible arm portion 57k is the electric junction box main portion 3 (FIGS. 3 and 6). Get over the inclined sliding contact surfaces 67p, 77p (FIGS. 5 and 6) of the engaged portions 67, 77 provided on the front.

  The engagement surface 57q provided in the engagement portions 57A and 57B of the outer cover 50 (FIGS. 1 and 2) and the engaged portions 67 and 77 of the connector blocks 60 and 70 (FIGS. 3 and 6). By combining the engaged surfaces 67q and 77q (FIG. 5), the central portion 55 of the outer cover 50 does not float up with respect to the electrical connection box main body 3, and the electrical connection box main body including the connector blocks 60 and 70 is provided. It is securely attached to the part 3.

  Side plate of the inner cover 80 constituting the electrical connection box main body 3 (FIG. 3) having a substantially rectangular box shape in plan view on one side edge 51m on the upper side of the outer cover 50 (FIG. 1) having a substantially rectangular shape in plan view. A lock engaging portion 59Lm (FIGS. 1, 4, and 6) that is engaged with the lock engaging portion 89L of the opposite side edge 3m of the portion 82 is provided. The one engaging portion 57A is provided in the vicinity of the recess 54a of the other opposite side edge portion 51p formed along the direction substantially orthogonal to the one opposite side edge portions 51m, 51n of the outer cover 50.

  Further, a power block constituting the electrical junction box main body 3 (FIG. 3) having a substantially rectangular box shape in plan view on one opposite side edge 51n on the lower side of the outer cover 50 (FIG. 1) having a substantially rectangular shape in plan view. A lock engaging portion 59Ln (FIGS. 1, 4, and 6) that is engaged with the lock engaging portion 109L of the opposite side edge portion 3n of the housing 106 is provided. The other engaging portion 57B is provided in the vicinity of the concave portion 54b of the other opposite side edge portion 51q formed along the direction substantially orthogonal to the one opposite side edge portion 51m, 51n of the outer cover 50.

  The lock engaging portions 59Lm and 59Ln of one of the opposite side edge portions 51m and 51n of the outer cover 50 (FIGS. 1 and 6) having a substantially rectangular shape in plan view, and the electrical junction box main body 3 having a substantially rectangular box shape in plan view. The lock engaging portions 89L and 109L of the opposite side edge portions 3m and 3n of FIG. 3 and FIG. 6 are engaged with each other (FIG. 4), and the outer cover 50 (FIGS. 1, 2 and 6) The engaging portions 57A and 57B provided on the substantially central portion 55 and the inner surface portion 51a side, and the engaged portions 67 and 77 provided in the interior 3h of the electrical junction box main body 3 (FIGS. 3 and 5). As shown in FIGS. 4 and 5, it is possible to reliably prevent the central portion 55 of the outer cover 50 from being lifted with respect to the electrical junction box main body 3. Further, it is possible to prevent the outer cover 50 having a substantially planar shape from turning up with respect to the electrical junction box main body 3.

  When the outer cover 50 (FIGS. 1, 2, and 6) is attached to the electrical junction box main body 3 (FIG. 3), the lock engaging portion 59Lm on the upper side of the outer cover 50 (FIGS. 1 and 2) (FIG. 1). ) End over the lock engaging portion 89L of the inner cover 80 constituting the electric junction box main body portion 3 (FIGS. 3 and 6). Also, the end 59r (FIG. 2) of the lock engaging portion 59Ln on the lower side of the outer cover 50 (FIGS. 1 and 2) of the power block 100 constituting the electrical junction box main body 3 (FIGS. 3 and 6). Get over the lock latch 109L.

  The engagement surfaces 59q (FIG. 2) of the lock engaging portions 59Lm and 59Ln of the outer cover 50 (FIGS. 1 and 2) and the lock engaging portions 89L of the electrical junction box main body 3 (FIGS. 3 and 6), By combining the 109L engaging surfaces 89q and 109q (FIG. 3), the lock engaging portions 59Lm and 59Ln of the outer cover 50 and the lock engaging portions 89L and 109L of the electrical junction box main body 3 are engaged. (FIG. 4).

  As shown in FIGS. 1 and 2, the engaging portions 57A and 57B provided on the outer cover 50 are formed to include an engaging protrusion 57n and a flexible arm portion 57k. As shown in FIGS. 3, 5, and 6, the engaged portions 67 and 77 provided in the electrical junction box main body 3 are connected to the connector housings 66 and 76 of the connectors 65 and 75 constituting the electrical junction box main body 3. The holes 67n and 77n are provided in the back side surfaces 66b and 76b.

  Engaging portions 57A and 57B provided with a flexible arm portion 57k and an engaging projection portion 57n provided on the outer cover 50 (FIGS. 1 and 2) constitute the electrical junction box main portion 3 (FIGS. 3 and 5). Since the rear side surface portions 66b and 76b of the connector housings 66 and 76 of the connectors 65 and 75 to be engaged with the engaged portions 67 and 77 provided as the holes 67n and 77n (FIGS. 5 and 6) are provided. The attachment / detachment work of the thin outer cover 50 with respect to the junction box main body 3 can be facilitated. In addition, this allows the outer cover 50 to be securely attached to the electrical junction box main body 3, and further prevents the substantially planar outer cover 50 from turning up with respect to the electrical junction box main body 3. .

  The outer cover 50 (FIG. 1) is attached to the electrical junction box main body 3 (FIG. 3), and one side plate portion 52 m of the outer cover 50 (FIG. 4) is on the upper side, and includes the outer cover 50 and the electrical junction box main body 3. When the electrical junction box 1 is in a normal posture, the ribs 56 surrounding the upper side and the side of the base portion 57j of the flexible arm 57k constituting the engaging portions 57A and 57B are the substrate portion of the outer cover 50. 51 is provided near the periphery of the base portion 57j of the flexible arm portion 57k of the engaging portions 57A and 57B on the outer surface portion 51b side.

  As shown in FIGS. 1 and 4, the rib 56 includes an upper inclined portion 56a and a straight portion 56b following the inclined portion 56a, and a pair of inclined portions 56a at the upper end portions 56e of the pair of inclined portions 56a. As a result, the ingress of water droplets into the through hole 57s provided in the substrate portion 51 of the outer cover 50 is prevented. The rib 56 is formed in a substantially reverse concave shape when the outer cover 50 is viewed in plan. The flexible arm portion 57k of the engaging portions 57A and 57B is provided at the substantially central portion 56c of the substantially reverse concave rib 56.

  If the rib 56 having such a shape is provided on the outer cover 50, water droplets (not shown) from the upper portion of the outer cover 50 mounted on the electrical junction box main body 3 cause the engagement portions 57 </ b> A and 57 </ b> B of the outer cover 50. To prevent the inside of the through-hole 57s of the root portion 57j from entering and the water droplets from entering the electrical junction box main body 3 and causing the electronic components constituting the electrical junction box main body 3 to malfunction due to the water droplets. Can do.

  As shown in FIGS. 1 and 2, through holes 57 s are provided in the base portions 57 j of the engaging portions 57 </ b> A and 57 </ b> B of the outer cover 50. When the outer cover 50 is removed from the electrical junction box main body 3 (FIG. 4), jigs (not shown) such as jig bars are provided at the base portions 57j of the engaging portions 57A and 57B of the outer cover 50. It is inserted into the through hole 57s. The flexible arms 57k of the engaging portions 57A and 57B provided on the outer cover 50 are bent from the root portion 57j (FIGS. 1 and 2) by the jig inserted into the through hole 57s.

  As a result, the engagement protrusion 57n provided at the distal end 57m of the flexible arm 57k is connected to the back side surfaces 66b and 76b of the connector housings 66 and 76 of the connectors 65 and 75 (FIGS. 3, 5, and 6). Are disengaged from the engaged portions 67 and 77 provided with the holes 67n and 77n. In this way, the engaging portions 57A and 57B of the outer cover 50 engaged with the engaged portions 67 and 77 (FIG. 5) in the interior 3h of the electrical junction box main body 3 are released, and the electrical junction box main body 3 The outer cover 50 (FIGS. 1, 2, and 6) is removed from (FIG. 3).

  Further, as shown in FIG. 1, the lock engaging portions 59Lm and 59Ln provided on one of the opposite side edges 51m and 51n of the outer cover 50 are provided with through holes 59s and 59t. A jig (such as a jig bar) (not shown) is inserted into the through holes 59s and 59t (FIG. 4) of the outer cover 50, and the side plate portions 52m and 52n provided with the engagement surface 59q are the electric junction box main body 3. Are bent toward the outer side of each of the lock engaging portions 89L and 109L of the opposite side edge portions 3m and 3n of the electrical junction box main body 3 and each of the opposite side edge portions 51m and 51n of the outer cover 50. The locked state with the lock engaging portions 59Lm and 59Ln is released, and the outer cover 50 (FIGS. 1, 2, and 6) is removed from the electrical junction box main portion 3 (FIG. 3).

  A rib 53a that prevents water from entering the electric junction box main body 3 (FIGS. 3 to 5) from the other opposite side edge 51p of the substrate 51 that constitutes the outer cover 50 (FIG. 1), The outer cover 50 (FIG. 1) is provided on the outer surface 51b side and the other opposite edge 51p of the substrate 51. Further, a rib 53b for preventing water from entering the electrical junction box main body 3 (FIGS. 3 to 5) from the other opposite side edge 51q of the substrate 51 constituting the outer cover 50 (FIG. 1). Is provided on the outer surface 51b side and the other opposite side edge portion 51q of the substrate portion 51 constituting the outer cover 50 (FIG. 1). The ribs 53a and 53b are provided so as to surround the central portion 55 of the substrate portion 51 constituting the outer cover 50 from both sides. Further, the ribs 53a and 53b are provided along the other opposite side edge portions 51p and 51q of the substrate portion 51 constituting the outer cover 50.

  A rib 53a is provided along the other opposite side edge 51p of the concave portion 54a of the substrate portion 51 constituting the outer cover 50. One rib 53a is formed to include an upper straight portion 53c, an upper inclined portion 53e following the straight portion 53c, and a straight portion 53g following the inclined portion 53e. A rib 53b is provided along the other opposite side edge portion 51q in the concave portion 54b of the substrate portion 51 constituting the outer cover 50. The other rib 53b is formed to include an upper straight portion 53d, an upper inclined portion 53f following the straight portion 53d, and a straight portion 53h following the inclined portion 53f.

  If such ribs 53a and 53b are provided on the outer cover 50, they are provided on the other opposite side edge portions 51p and 51q of the outer cover 50 when the electrical junction box 1 (FIG. 4) is flooded. By the ribs 53a and 53b, water can be prevented from entering the interior 3h of the electrical junction box main body 3. The ribs 53 a and 53 b also serve as reinforcing ribs 53 a and 53 b that prevent the outer cover 50 from warping and improve the rigidity of the outer cover 50.

  An electrical junction box means a junction box or junction block (J / B), relay block (R / B), connection unit, etc. Generally, inside a junction box or junction block (J / B) or connection unit, etc. An electronic control unit (ECU) is equipped.

  Below, an example of the assembly procedure of the electrical junction box 1 is demonstrated based on FIG.

  A plurality of bus bars 90 are routed on the substrate portion 81 of the inner cover 80. Further, the electronic unit 40 is attached to the inner cover 80 by using a stopper 200 such as a screw 200 (FIG. 5). At that time, the connector 48 (FIG. 6) provided in the electronic unit 40 and each bus bar 90 are connected so as to be energized.

  A slide hooking portion 68 having a substantially T-shaped cross section provided in the connector housing 66 of one connector block 60 is aligned with a slide hooking portion 88 </ b> A having a substantially T-shaped cross section provided in the side plate portion 82 of the inner cover 80. The locking projection-shaped locking portion 69 provided on the connector housing 66 of one connector block 60 is engaged with an engaging portion (not shown) provided on the inner cover 80, so that one connector is connected. The block 60 is attached and fixed to the inner cover 80 (FIG. 3).

  Further, a slide hooking portion 78 having a substantially T-shaped cross section provided in the connector housing 76 of the other connector block 70 (FIG. 6) is a slide having a substantially T-shaped cross section provided in the side plate portion 82 of the inner cover 80. A latching protrusion-like latching portion 79 provided on the connector housing 76 of the other connector block 70 is engaged with an engaging portion (not shown) provided on the inner cover 80. Thus, the other connector block 70 is attached and fixed to the inner cover 80 (FIG. 3).

  Further, the slide hooking portion 108 having a substantially T-shaped cross section provided in the housing 106 of the power block 100 (FIG. 6) is aligned with the slide hooking portion 88C having a substantially T-shaped cross section provided in the inner cover 80. A locking projection-shaped locking portion 109 provided on the housing 106 of the power block 100 is engaged with an engaging portion (not shown) provided on the inner cover 80, whereby the power block 100 is engaged with the inner cover 80. Attached to and fixed.

  After confirming that the predetermined fuse 120 is attached to the power block 100, the fuse cover 110 is attached to the power block 100. The mounting operation of the fuse cover 110 to the power block 100 may be performed during the assembly process of the electrical junction box 1 or may be before the electrical junction box 1 is shipped to an automobile parts assembly manufacturer or the like. Alternatively, it may be performed at the end of the process of assembling the electrical junction box 1.

  On the board portion 81 of the inner cover 80, the wiring board 130 is mounted between the connector blocks 60 and 70. Each bus bar 90 is connected to an electric wire (not shown) of the wiring board 130 so as to be energized. Moreover, the wiring module 140 assembled in advance is mounted on the wiring board 130, and each part and the wiring module 140 are connected so as to be energized.

  Further, one lock engaging portion 59Lm provided on the outer cover 50 (FIGS. 1 and 6) is engaged with a lock engaging portion 89L provided on the side plate portion 82 of the inner cover 80 (FIGS. 3 and 6). (FIGS. 4 and 6). At the same time, the other lock engaging portion 59Ln provided on the outer cover 50 (FIGS. 1 and 6) is engaged with a lock engaging portion 109L provided on the housing 106 of the power block 100 (FIGS. 3 and 6). (FIGS. 4 and 6). In addition, a pair of engaging portions 57A and 57B provided on the central portion 55 side of the outer cover 50 (FIGS. 1, 2, and 6) are provided on the inner 3h side of the electrical junction box main portion 3 (FIGS. 3 and 5). Are engaged with a pair of engaged portions 67 and 77 provided on the base plate. As a result, the outer cover 50 (FIGS. 1 and 2) is not lifted up or splashed up with respect to the electric connection box main body 3 including the inner cover 80 (FIG. 3) and the power block 100. The main body 3 is securely mounted and fixed (FIGS. 4 and 5).

  Further, the engaging portion 29P provided on the substrate cover 20 (FIG. 6) is engaged with the engaging portion 89P provided on the inner cover 80, whereby the substrate cover 20 is attached and fixed to the inner cover 80.

  The board portion 31 of the electronic circuit board 30 is attached to the groove 26 (FIG. 5) of the board cover 20, and the small cover 10 is attached to the board cover 20, so that the electronic circuit board 30 is fixed to the board cover 20. . Further, the engaging portion 19 (FIG. 6) provided on the small cover 10 is engaged with the engaging portion 29 provided on the substrate cover 20, whereby the small cover 10 and the electronic circuit board 30 are connected to the substrate cover 20. Attached to and fixed. Depending on the design specifications of the electrical junction box 1, the electronic circuit board 30 and the small cover 10 may be attached and fixed to the board cover 20 by, for example, an automobile parts assembly manufacturer.

  The electrical connection box 1 is assembled to an automobile (not shown) by the brackets 85A and 85B of the inner cover 80 of the assembled electrical connection box 1 (FIG. 4). In addition, a mating connector (not shown) of a wire harness (not shown) is connected to each connector 35, 45, 65, 75 (FIGS. 5 and 6) of the electrical junction box 1 so as to be energized. A wire harness (not shown) extends from the electrical connection box 1 to each electrical component (not shown) installed in a vehicle (not shown). A wire harness (not shown) is stretched around an automobile (not shown). The electrical connection box 1 and each electrical component (not shown) are connected by a wire harness (not shown) so as to be energized.

It is a perspective view which shows a cover. It is AA sectional drawing of FIG. It is a top view which shows an electrical-connection-box main part. It is a top view which shows one Embodiment of the lock structure of the cover in the electrical junction box which concerns on this invention. It is BB sectional drawing of FIG. It is a disassembled perspective view which shows an electrical junction box.

Explanation of symbols

1 Electrical Junction Box 3 Electrical Junction Box Main Body 3m, 3n Opposite Side Edge 50 Outer Cover (Cover)
51m, 51n One side edge 51p, 51q The other side edge 53a, 53b, 56 Rib 57A, 57B Engagement part 57k Flexible arm part (arm part)
59Lm, 59Ln Lock engagement part (lock part)
65,75 connector 67,77 engaged portion 67n, 77n hole 89L, 109L lock locking portion

Claims (4)

A locking structure of the outer cover in the electrical junction box electrical connection box is assembled by being mounted to the electrical junction box main body,
The outer cover having a substantially rectangular shape in a plan view has a substrate portion that extends in a plane between two sets of opposite-side edges that are substantially orthogonal to each other, and one opposite-side edge that is a set of the two sets of opposite-side edges. A set of side plate portions that hang substantially orthogonal to the substrate portion ;
Wherein said one of opposite sides edge portions of the outer cover, the lock portion is provided to match relates to the lock engaging portion provided on the opposite side edge portions of the electrical junction box main body,
Center side and the engaging portion to fit relates an engaged portion provided inside of the electrical junction box main body portion on the inner surface of the outer cover at the other opposite side edge portions near the outer cover is provided,
The lock portion is engaged with the lock engaging portion and the engaging portion is engaged with the engaged portion, whereby the outer cover is attached to the main portion of the electric junction box and the electric junction box is assembled. locking structure of the outer cover in the electrical connection box, characterized in that. Said engaging portion is formed as comprising a flexible arm, the engaged portion is intended to comprise a hole provided on the back side of the connector constituting a prior SL electrical junction box main body locking structure of the outer cover in the electrical connection box according to claim 1, wherein. Said outer cover is attached to the electrical junction box main body, when said outer cover and the electrical junction box main body is the state of normal position, the ribs surrounding the upper and lateral side of the engaging portion , locking structure of the outer cover in the electrical connection box according to claim 1 or 2, characterized in that provided about the periphery of the engaging portion. From the other opposite side edge portions, the ribs for preventing the the electrical junction box main portion of water is penetration is of claims 1 to 3, characterized in that provided on the opposite side edge of the said other locking structure of the outer cover in the electrical connection box according to any one.

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