JP5710280B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box mounted on a vehicle or the like, and more particularly, to an electrical junction box including a junction box body and an attachment body such as an ECU attached to the junction box body.

  As an electrical junction box (also referred to as a junction block) mounted on an automobile or the like, for example, a junction box body in which a plurality of electrical components such as fuses and relays are housed in a housing, and a control circuit for controlling the plurality of electronic components There is known an electronic control unit (hereinafter referred to as an ECU) as a mounting body having a structure (for example, see Patent Document 1).

  In the electrical junction box shown in Patent Document 1 described above, a connector for fitting the ECU to the junction box body is provided, and the connector is fitted to both the bottom surface of the recess of the junction box body and the outer surface of the ECU. Is provided to connect the electrical component and the control circuit to each other. In addition, the electrical junction box disclosed in Patent Document 1 described above is provided with a guide portion that guides the ECU so that the ECU contacts and separates from the junction box body by rotating around one outer edge of the ECU. ing.

JP 2008-172892 A

  The above-described electrical junction box, that is, the junction box body and the ECU are required to be smaller. In the electric junction box disclosed in Patent Document 1 described above, the guide unit rotates the ECU around one outer edge of the ECU, thereby bringing the ECU closer to the junction box body, and this ECU is connected to the junction box body. It is attached. For this reason, in the electrical junction box shown in Patent Document 1 described above, when the ECU is downsized, the radius of rotation of the connector provided in the ECU when the ECU is brought close to the junction box main body is also reduced, so that the guide portion Thus, even if the ECU is brought close to the junction box body, it becomes difficult to fit the connectors.

  Accordingly, an object of the present invention is to provide an electrical junction box that can securely fit connectors provided on both the junction box body and the fixture, even if the size of the fixture is reduced. is there.

In order to achieve the above object, an electrical junction box according to the present invention described in claim 1 includes a junction box body and an attachment body attached to the junction box body, and the attachment body is attached to the junction box body. An electrical connection box in which connectors that fit together when attached are provided in both the junction box body and the attachment body, and a lock portion provided in the attachment body, and a lock receiver provided in the junction box body A plurality of mounting portions that are engaged with each other by at least one of the lock portion and the lock receiving portion being elastically deformed once. When the body is attached to the junction box body, when the at least one is in a neutral state and the lock portion and the lock receiving portion come into contact with each other, the connector is positioned at a position where the connectors can be fitted together. In so that the lock portion and the lock receiving portion and is provided, when mounting the mounting member to the connection box body, the closer to the mounting member remote from said junction box main body to the junction box body, wherein The connection box in a state where the lock portion and the lock receiving portion of at least one of the plurality of attachment portions are close to each other and the lock portion and the lock receiving portion of other attachment portions are separated from each other The connection box main body is positioned so that the attachment body is positioned on the main body, and the connectors are fitted to each other as the lock portion and the lock receiving portion of the other attachment portion come closer to each other. A second guide portion for guiding the attachment body, the second guide portion is provided in the vicinity of the one attachment portion, and as the attachment body approaches the connection box body, the second guide portion is provided. It is characterized in that it is configured to have a tapered wall that guides toward the attachment portion.

  The electrical junction box of the present invention described in claim 2 is the electrical junction box according to claim 1, wherein the connectors can be fitted to each other when the attachment body is attached to the junction box body. The guide part which guides so that the said attachment body may approach the said connection box main body is maintained.

According to the first aspect of the present invention, when the lock portions and the lock receiving portions of the plurality of attachment portions come into contact with each other in a neutral state, the connector is provided with the relative positions of the connection box body and the attachment body. They are provided at positions where they can be fitted together. For this reason, when attaching the attachment body to the connection box body, the connectors are securely fitted to each other by bringing the attachment body close to the connection box body while the lock part and the lock receiving part of each attachment part are in contact with each other. Can be combined. Therefore, the attachment body can be attached to the connection box body in a state in which the connectors can be reliably fitted without rotating the attachment body relative to the connection box body. Therefore, even if the attachment body is reduced in size, when the attachment body is attached to the connection box main body, the connectors provided on both the connection box main body and the attachment body can be reliably fitted to each other. Further, the connection box main body and the mounting body are arranged such that the second guide portion moves from the state where the lock portion and the lock receiving portion of one mounting portion are close to each other so that the lock portion and the lock receiving portion of the other mounting portion are close to each other. And guide you. For this reason, the attachment body can be attached to the connection box body by bringing the attachment body close to the connection box body so that the lock portion and the lock receiving portion of one attachment portion are close to each other. Therefore, the attachment body can be easily attached to the junction box body.

  In the present invention described in claim 2, after the lock portion and the lock receiving portion of each attachment portion come into contact with each other, the attachment body is attached to the connection box body in a state where the connectors can be fitted by the guide portion. You can get closer. Therefore, even if the attachment body is reduced in size, when the attachment body is attached to the connection box body, the connectors provided on both the connection box body and the attachment body can be more reliably fitted.

It is a perspective view which shows the electrical junction box concerning one Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the electrical-connection box shown by FIG. It is a perspective view which expands and shows the part enclosed by the III part in FIG. It is a perspective view which expands and shows the part enclosed by IV part in FIG. It is a perspective view which shows the state which brings ECU close to the junction box main body of the electrical junction box shown by FIG. It is sectional drawing which follows the VI-VI line in FIG. FIG. 6 is a perspective view showing a state in which a guide wall of the ECU is superimposed on a tapered wall provided in the junction box body of the electrical junction box shown in FIG. 5. It is sectional drawing which follows the VIII-VIII line in FIG. It is a perspective view which shows the state which brought ECU close to the junction box main body of the electrical junction box shown by FIG. It is sectional drawing which follows the XX line in FIG. It is sectional drawing which expands and shows the XI part in FIG. FIG. 10 is a perspective view showing a state where the ECU is further brought closer to the junction box body of the electrical junction box shown in FIG. 9. It is sectional drawing which follows the XIII-XIII line | wire in FIG. It is sectional drawing which expands and shows the XIV part in FIG. It is a perspective view which shows the state which brought ECU closer to the junction box main body of the electrical junction box shown by FIG. It is sectional drawing which follows the XVI-XVI line | wire in FIG. It is sectional drawing which expands and shows the XVII part in FIG. FIG. 16 is a perspective view showing a state in which the ECU is further brought closer to the junction box body of the electrical junction box shown in FIG. 15. It is sectional drawing which follows the XIX-XIX line | wire in FIG. It is sectional drawing which follows the XX-XX line in FIG. It is sectional drawing which follows the XXI-XXI line | wire in FIG. It is the side view seen from the arrow XXII direction in FIG.

  Hereinafter, an electrical junction box according to an embodiment of the present invention will be described with reference to FIGS. The electrical junction box 1 according to the present embodiment is fixed to a panel or the like constituting a vehicle body of an automobile, and electrically connects various electronic devices mounted on the automobile according to a predetermined pattern. is there.

  As shown in FIGS. 1 and 2, the electrical junction box 1 includes a junction box body 2 and an electronic control unit (hereinafter referred to as an ECU) as an attachment body attached to the junction box body 2. , 3, an attachment portion 4, a second attachment portion 5 as an attachment portion, a plurality of guide portions 6, and a plurality of second guide portions 7.

  The connection box body 2 includes a housing 8 made of an insulating synthetic resin, a printed wiring board (not shown) that is housed in the housing 8 and mounted with electrical components such as a fuse and a relay, and a connector 9 (see FIG. 19).

  The housing 8 includes a pair of substantially square mounting walls 10 spaced apart from each other, and four rectangular side walls 11 that connect the pair of mounting walls 10 and are narrower than the mounting walls 10. And is formed in a flat box shape. Moreover, the recess 12 for accommodating ECU3 is provided in the attachment wall 10 of the near side in FIG.1 and FIG.2 among a pair of attachment walls10. In the illustrated example, the recess 12 is provided in about half of the upper side of the mounting wall 10 in FIG. The bottom wall 13 of the recess 12 is provided in parallel with the mounting wall 10. As shown in FIG. 19, the connector 9 includes a cylindrical housing portion 14 and a plurality of terminals 15. The housing portion 14 is erected from the bottom wall 13 along a direction orthogonal to the surface of the bottom wall 13. The terminal 15 is made of a conductive metal and has a rod shape. One end of the terminal 15 is attached to the printed wiring board, and the other end is positioned in the housing portion 14. The longitudinal direction of the terminal 15 is orthogonal to the surface of the bottom wall 13.

  As shown in FIGS. 1 and 2, the ECU 3 includes a housing 16 made of an insulating synthetic resin, a printed wiring board (not shown) that is housed in the housing 16 and mounted with various electronic components, and a connector 17. (Shown in FIG. 19) and a harness connector 18 are provided.

  The housing 16 is formed in a flat box shape that can be accommodated in the recess 12. When the ECU 3 is attached to the junction box main body 2 in the form of being accommodated in the recess 12 by mounting portions 4 and 5 described later, an overlapping wall 19 (shown in FIG. 2) that overlaps the bottom wall 13 of the recess 12. As shown in FIG. 22, the mounting wall 10 provided with the recess 12 is flush with the flush wall 20, and the overlapping wall 19 and four side walls 21 are connected to the flush wall 20. . Note that the overlapping wall 19 and the flush wall 20 are formed in parallel and spaced apart from each other with the same planar shape.

  As shown in FIG. 19, the connector 17 includes a cylindrical housing portion 22 and a plurality of terminals (not shown). The housing portion 22 is provided in a hole 24 that penetrates the overlapping wall 19, and extends in a direction orthogonal to the surface of the overlapping wall 19. The terminal is made of a conductive metal, and integrally includes a board connection portion attached to a printed wiring board in the housing 16 and a sandwiching portion that is connected to the board connection portion and sandwiches the terminal 15. The sandwiching part is accommodated in the housing part 22.

  In the connector 17, the housing portion 22 enters the housing portion 14, and the pinching portion of the terminal sandwiches the terminal 15, so that the connector 17 is fitted. The connectors 9 and 17 are brought close to each other and fitted to each other with the inner surfaces of the housing portions 14 and 22 being parallel to each other. For this reason, as shown in FIG. 19, a position where the inner surface of the housing portion 14 is substantially flush with the outer surface of the housing portion 22 is referred to as a position where the connectors 9 and 17 can be fitted.

  The harness connector 18 includes a cylindrical housing portion 23 provided in a hole penetrating the side wall 21 and a terminal (not shown) provided in the housing portion 23 and connected to a printed wiring board. . The harness connector 18 is fitted with a connector of a wire harness routed in the automobile.

  In the present embodiment, only one mounting portion 4 is provided. As shown in FIG. 2, the attachment portion 4 includes a receiving portion 25 and a lock arm 26 as a lock portion.

  The receiving portion 25 includes a cylindrical portion 27 and a main body side lock arm 28 as a lock receiving portion. The cylindrical portion 27 is integrally provided on the side wall 11 located on the upper side in FIG. 2 of the junction box body 2 (that is, near the edge of the recess 12). The cylindrical portion 27 is provided in the center of the side wall 11 and is convex from the outer surface of the side wall 11. Moreover, the cylindrical part 27 is formed in the cylindrical shape which the opening part 12a side of the dent 12 opened. The main body side lock arm 28 is accommodated in the cylindrical portion 27. The main body side lock arm 28 has an arm main body 29 whose longitudinal direction is perpendicular to the longitudinal direction of the cylindrical portion 27, that is, the surface of the mounting wall 10, and a lock protrusion 30 provided at the center of the arm main body 29 in the longitudinal direction. And integrated. The arm body 29 is formed in a cantilever shape with one end portion of the recess 12 near the opening 12a, that is, the side away from the bottom wall 13 connected to the outer surface of the side wall 11 and the other end portion near the bottom wall 13 being a free end. ing. The arm main body 29, that is, the main body side lock arm 28 is elastically deformable so that the other end portion is in contact with and away from the side wall 11. The lock protrusion 30 is formed so as to protrude from the arm body 29 toward the outside of the connection box body 2. The surface 30a of the lock protrusion 30 on the side away from the bottom wall 13 is formed on the surface of the bottom wall 13 and the surface of the bottom wall 13 so as to gradually approach the arm body 29 as the distance from the bottom wall 13 increases. It inclines with respect to both the orthogonal direction. A bottom wall 13 side surface 30 b of the lock protrusion 30 is parallel to the surface of the bottom wall 13.

  The lock arm 26 is provided at the center of the side wall 21 located on the upper side of the ECU 3 in FIG. The lock arm 26 is integrally provided with a pair of parallel beams 31 that are parallel to each other and a connecting beam 32 that connects the parallel beams 31 together. The parallel beams 31 are spaced apart from each other along the longitudinal direction of the side wall 21, and outward in the direction perpendicular to the side wall 21 from the end of the side wall 21 away from the junction box body 2. A standing portion 33 that is erected and an extending portion 34 that extends from the tip of the standing portion 33 in parallel with the side wall 21 toward the connection box body 2 are provided. The connecting beam 32 is formed in a rod shape and connects the ends of the extending portion 34 on the side away from the standing portion, that is, the ends of the parallel beam 31 near the connection box body 2. The surface of the side wall 21 and the side wall of the connecting beam 32 are gradually separated from the side wall 21 as approaching the connection box body 2, that is, toward the back of the tubular portion 27. It inclines with respect to both the direction orthogonal to the surface of 21. A surface 32 b of the connecting beam 32 on the side away from the connection box body 2 is parallel to a direction orthogonal to the surface of the side wall 21. The parallel beam 31, that is, the lock arm 26 is elastically deformable so that the connecting beam 32 contacts and separates from the side wall 21.

  In the mounting portion 4 described above, the connecting beam 32 overlaps the lock projection 30 in a neutral state where the lock arm 26 enters the cylindrical portion 27 and the lock arms 26 and 28 are not elastically deformed. In this state, when the connecting beam 32 tries to get over the lock protrusion 30, the surfaces 30 a and 32 a are inclined as described above, and therefore the arm body 29 of the body side lock arm 28 is connected to the side wall 11 at the other end. The parallel beam 31 of the lock arm 26 is once elastically deformed so that the connecting beam 32 is separated from the side wall 21. In the mounting portion 4 described above, when the connecting beam 32 gets over the lock protrusion 30, the arm main body 29 and the parallel beam 31 return to the neutral state by the elastic restoring force, and the surfaces 30b and 32b described above overlap closely. . In this way, in the attachment portion 4, the lock arm 26 and the main body side lock arm 28 are engaged with each other. The attachment portion 4 constitutes at least one attachment portion described in the claims.

  In the present embodiment, two second mounting portions 5 are provided. As shown in FIG. 2, the second attachment portion 5 includes a lock receiving portion 35 and a lock portion 36.

  As shown in FIG. 4, the lock receiving portion 35 is integrated with a standing wall 37 erected from the edge in the width direction of the end portion of the bottom wall 13 of the recess 12 of the junction box body 2 located in the lower part in FIG. 2. The arm 38 is provided with a projection 39 provided at the center of the arm 38.

  The arm 38 has a longitudinal direction orthogonal to the surface of the bottom wall 13, one end portion on the side away from the bottom wall 13 is connected to the standing wall 37, and the other end portion near the bottom wall 13 is free. It is formed in the shape of a cantilever at the end. The arm 38 is elastically deformable in the direction in which the other end is submerged in the standing wall 37. The protrusion 39 is provided so as to protrude from the center of the arm 38 toward the outside of the junction box body 2. The protrusion 39 protrudes from the arm 38 at the center in the longitudinal direction of the arm 38 and has a curved surface.

  As shown in FIG. 3, the lock portion 36 includes a protruding wall 40 that protrudes outward from the both ends of the side wall 21 of the ECU 3 in the lower part of FIG. 2, and a protrusion 41 provided on the protruding wall 40. And. The protruding wall 40 extends linearly in a direction perpendicular to the surfaces of the overlapping wall 19 and the flush wall 20. The protrusion 41 is provided so as to protrude from the surface of the protruding wall 40 toward the inside in the width direction of the ECU 3. The center of the protrusion 41 protrudes most from the protruding wall 40, and the surface thereof is formed in a curved shape.

  In the second mounting portion 5 described above, the protruding wall 40 overlaps the standing wall 37 with a space therebetween, and the arm 38 of the lock receiving portion 35 is in a neutral state in which it is not elastically deformed. The protrusions 41 of the part 36 are in contact with each other. In this state, when the protrusions 39 and 41 try to get over each other, since the surfaces of the protrusions 39 and 41 are formed in a curved surface, the arm 38 of the lock receiving portion 35 is temporarily elastic so that it is submerged in the standing wall 37. Deform. Then, when the protrusions 39 and 41 get over each other, the arm 38 returns to the neutral state by the elastic restoring force so that the protrusions 39 and 41 are in close contact with each other. Thus, in the second attachment portion 5, the lock portion 36 and the lock receiving portion 35 are engaged with each other. In addition, the 2nd attachment part 5 has comprised the other attachment part described in the claim.

  Further, in the electrical junction box 1 of the present embodiment, the connecting beam 32 is the lock protrusion 30 in the neutral state in which the lock arm 26 of the mounting portion 4 enters the cylindrical portion 27 and the lock arms 26 and 28 are not elastically deformed. The projection wall 40 of the lock receiving portion 35 overlaps with the projection 39 of the lock receiving portion 35 in a neutral state where the protruding wall 40 of the second mounting portion 5 overlaps with the standing wall 37 with a gap therebetween and the arm 38 of the lock receiving portion 35 is not elastically deformed. When the protrusions 41 of the lock portion 36 come into contact with each other, as shown in FIG. 19, the bottom wall 13 and the overlapping wall 19 are parallel to each other with a space therebetween, so that the connectors 9 and 17 can be fitted to each other. It is done. Thus, in the electrical junction box 1 of the present embodiment, the connecting beam 32 has the lock projection 30 in the neutral state in which the lock arm 26 of the mounting portion 4 enters the cylindrical portion 27 and the lock arms 26 and 28 are not elastically deformed. The projection wall 40 of the lock receiving portion 35 overlaps with the projection 39 of the lock receiving portion 35 in a neutral state where the protruding wall 40 of the second mounting portion 5 overlaps with the standing wall 37 with a gap therebetween and the arm 38 of the lock receiving portion 35 is not elastically deformed. When the protrusions 41 of the lock portion 36 come into contact with each other, the lock arms 26, 28, the lock portion 36, and the lock receiving portion of the mounting portions 4, 5 are positioned so that the connectors 9, 17 can be fitted to each other. 35 is provided.

  In the illustrated example, four guide portions 6 are provided. The guide 6 includes a guide wall 42 provided at each corner of the housing 16 of the ECU 3, and a guide groove 43 provided at each corner of the recess 12 on the inner surface desired for the recess 12 in the side wall 11 of the housing 8. ing. Each of the guide walls 42 extends linearly along a direction orthogonal to the surfaces of the overlapping wall 19 and the flush wall 20. The guide wall 42 projects in the width direction of the ECU 3 from the edge of the side wall 21 near the side wall 21 where the mounting portion 4 is provided, and the width direction of the ECU 3 from the tip of the projecting wall 40 on the side away from the housing 16. And a protruding portion. The guide groove 43 is recessed from the inner surface of the side wall 11 and extends in a direction orthogonal to the bottom wall 13 of the recess 12. The guide groove 43 positions the guide wall 42 inside thereof. The guide groove 43 guides the guide wall 42 to move in the longitudinal direction.

  In the guide portion 6 having the above-described configuration, the connecting beam 32 overlaps the lock protrusion 30 in a neutral state in which the lock arm 26 of the mounting portion 4 enters the cylindrical portion 27 and the lock arms 26 and 28 are not elastically deformed. When the projection 39 of the lock receiving portion 35 and the projection 41 of the lock portion 36 come into contact with each other in the neutral state where the arm 38 of the lock receiving portion 35 is not elastically deformed, as shown in FIG. Position in the guide groove 43. And the guide part 6 guides the guide wall 42 in the longitudinal direction of the guide groove 43, so that the bottom wall of the recess 12 of the junction box body 2 is maintained while maintaining the position where the connectors 9 and 17 can be fitted together. 13 is guided so that the overlapping wall 19 of the ECU 3 approaches.

  In the illustrated example, two second guide portions 7 are provided. The second guide portion 7 is formed at the edge of the four guide grooves 43 of the guide portion 6 near the mounting wall 10 on the near side in FIG. 2 of the two guide grooves 43 near the center of the junction box body 2 in FIG. A tapered wall 44 is provided. The taper wall 44 is formed on the surface of the bottom wall 13 so as to gradually move away from the mounting portion 4 toward the mounting wall 10 on the near side in FIG. It is inclined with respect to both the direction perpendicular to the surface. The tapered wall 44 positions the guide wall 42 on its surface.

  When the ECU 3 separated from the connection box body 2 is brought close to the connection box body 2, the second guide part 7 positions the guide wall 42 on the taper wall 44, so that the second of the plurality of attachment parts 4 and 5. The ECU 3 is positioned in the junction box body 2 in a state where the lock portion 36 and the lock receiving portion 35 of the attachment portion 5 are close to each other and the lock portion 36 and the lock receiving portion 35 of the attachment portion 4 are separated from each other. The second guide portion 7 is connected to the connectors 9 and 17 each time the guide wall 42 is guided onto the taper wall 44 as the lock arm 26 and the main body side lock arm 28 of the attachment portion 4 approach each other. The ECU 3 is guided to the junction box body 2 toward the position where the fitting is possible.

  In the electrical junction box 1 having the above-described configuration, the ECU 3 is attached to the junction box body 2 as shown below.

  First, as shown in FIGS. 5 and 6, the ECU 3 is placed in the recess 12 so that the overlapping wall 19 faces the bottom wall 13 of the recess 12 and the guide wall 42 protruding from the protruding wall 40 approaches the tapered wall 44. Move closer to the junction box body 2. As shown in FIGS. 7 and 8, the guide wall 42 protruding from the protruding wall 40 described above overlaps the tapered wall 44. In this state, the lock portion 36 and the lock receiving portion 35 of the second attachment portion 5 are close to each other, and the lock arm 26 and the main body side lock arm 28 of the attachment portion 4 are separated from each other. Thus, the taper wall 44 of the second guide portion 7 causes the lock of the second attachment portion 5 when the ECU 3 separated from the connection box body 2 is brought close to the connection box body 2 when the ECU 3 is attached to the connection box body 2. The ECU 3 is positioned in the junction box body 2 in a state where the portion 36 and the lock receiving portion 35 are close to each other and the lock arm 26 and the main body side lock arm 28 of the mounting portion 4 are separated from each other.

  Then, the ECU 3 is rotated with respect to the junction box body 2 so that the overlapping wall 19 approaches the bottom wall 13 of the recess 12 around the guide wall 42 overlapping the tapered wall 44. As shown in FIG. 9, as the overlapping wall 19 approaches the bottom wall 13 of the recess 12, the guide wall 42 protruding from the protruding wall 40 described above moves on the tapered wall 44 as shown in FIGS. 10 and 11. Slide. As shown in FIG. 11, the guide wall 42 that has slid on the tapered wall 44 enters the guide groove 43. Thus, the taper wall 44 of the second guide portion 7 is directed to a position where the connectors 9 and 17 can be fitted to each other as the lock arm 26 and the main body side lock arm 28 of the attachment portion 4 approach each other. The ECU 3 is guided to the connection box body 2.

  Furthermore, as shown in FIG. 12, when the ECU 3 is rotated with respect to the junction box main body 2 so that the lock arm 26 and the main body side lock arm 28 of the mounting portion 4 approach each other, As shown, the guide wall 42 protruding from the side wall 21 enters the guide groove 43. Further, as shown in FIG. 15, when the ECU 3 is rotated with respect to the connection box body 2, the lock arm 26 of the mounting portion 4 enters the cylindrical portion 27 as shown in FIGS. 16 and 17. .

  Further, as shown in FIG. 18, when the ECU 3 is rotated with respect to the junction box main body 2, as shown in FIG. 19, the lock arm 26 and the main body side lock arm 28 are in a neutral state where they are not elastically deformed. The lock protrusion 30 and the connecting beam 32 are in contact with each other. Further, as shown in FIG. 20, the protrusions 39 and 41 are in contact with each other in the neutral state where the arm 38 of the second mounting portion 5 is not elastically deformed. Then, as shown in FIG. 19, the junction box body 2 and the ECU 3 are positioned at positions where the connectors 9 and 17 can be fitted to each other. Thus, the lock arms 26 and 28 of the mounting portion 4 and the lock portion 36 and the lock receiving portion 35 of the second mounting portion 5 are elastically deformed when the ECU 3 is attached to the junction box body 2. When the lock arms 26 and 28 and the lock portion 36 and the lock receiving portion 35 come into contact with each other in the neutral state, the connection box body 2 and the ECU 3 are positioned at positions where the connectors 9 and 17 can be fitted. As is provided.

  When the ECU 3 is further brought closer to the connection box body 2, the guide wall 42 slides in the guide groove 43, and the ECU 3 keeps a position where the connectors 9 and 17 can be fitted to each other while the ECU 3 is connected to the connection box body 2. Get closer to. Thus, when the ECU 3 is attached to the junction box body 2, the guide section 6 keeps the position where the connectors 9 and 17 can be fitted with each other so that the ECU 3 approaches the junction box body 2. 2 and the ECU 3 are guided. Then, after the lock arms 26 and 28 are elastically deformed and the connecting beam 32 gets over the lock protrusion 30, the lock arms 26 and 28 of the mounting portion 4 are engaged with each other as shown in FIG. After 38 is elastically deformed and the projections 39 and 41 get over each other, they are engaged with each other. Thus, the ECU 3 is attached to the junction box body 2, and the connectors 9 and 17 provided on these are fitted to each other.

  According to this embodiment, the lock arm 26 and the main body side lock arm 28 of the attachment portion 4 are in contact with each other in a neutral state, and the lock portion 36 and the lock receiving portion 35 of the second attachment portion 5 are in contact with each other in a neutral state. Then, the relative positions of the junction box body 2 and the ECU 3 are provided at positions where the connectors 9 and 17 provided on these can be fitted. For this reason, when the ECU 3 is attached to the junction box body 2, the ECU 3 is attached to the junction box body 2 in a state where the lock arms 26 and 28 of the attachment portions 4 and 5, the lock portion 36 and the lock receiving portion 35 are in contact with each other. By bringing the two close to each other, the connectors 9 and 17 can be reliably fitted to each other. Therefore, the ECU 3 can be attached to the junction box body 2 in a state where the connectors 9 and 17 can be reliably fitted without rotating the ECU 3 relative to the junction box body 2. Therefore, even if the ECU 3 is reduced in size, when the ECU 3 is attached to the junction box body 2, the connectors 9 and 17 provided on both the junction box body 2 and the ECU 3 can be reliably fitted to each other.

  Further, after the lock arm 26 of the mounting portion 4 and the lock arm 28 on the main body side are in contact with each other in a neutral state and the lock portion 36 and the lock receiving portion 35 of the second mounting portion 5 are in contact with each other in a neutral state, the guide portion 6, the ECU 3 can be brought close to the junction box body 2 in a state where the connectors 9 and 17 can be fitted to each other. Therefore, even if the ECU 3 is reduced in size, when the ECU 3 is attached to the junction box body 2, the connectors 9 and 17 provided on both the junction box body 2 and the ECU 3 can be more reliably fitted. .

  Further, the second guide portion 7 is arranged so that the lock arm 26 and the main body side lock arm 28 of the attachment portion 4 approach each other from the state in which the lock portion 36 and the lock receiving portion 35 of the second attachment portion 5 are close to each other. The junction box body 2 and the ECU 3 are guided. For this reason, the ECU 3 can be attached to the junction box body 2 by bringing the ECU 3 close to the junction box body 2 so that the lock part 36 and the lock receiving part 35 of the second attachment part 5 are close to each other. Therefore, the ECU 3 can be easily attached to the junction box body 2.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention. For example, in the embodiment described above, only one mounting portion 4 is provided and two second mounting portions 5 are provided. However, the present invention is not limited to this, and the mounting portion 4 and the second mounting portion 5 are not limited thereto. And two or more may be provided. Furthermore, both the lock portion and the lock receiving portion may be elastically deformed once, and one of them may be once elastically deformed and engaged with each other.

1 Electrical junction box 2 Junction box body 3 ECU (mounting body)
4 mounting parts (other mounting parts)
5 Second mounting part (one mounting part)
6 Guide 7 7 Second Guide 9, 17 Connector 26 Lock Arm (Lock)
28 Body side lock arm (lock receiving part)
35 Lock receiving part 36 Lock part

Claims (2)

A connection box body and an attachment body attached to the connection box body, and a connector that fits together when the attachment body is attached to the connection box body are provided on both the connection box body and the attachment body. In the electrical junction box
A lock portion provided on the attachment body and a lock receiving portion provided on the junction box body, and at least one of the lock portion and the lock receiving portion is elastically deformed once, whereby the lock A plurality of attachment portions that engage with each other and the lock receiving portion,
When attaching the attachment body to the junction box body, when the at least one is in a neutral state and the lock part and the lock receiving part come into contact with each other, the connectors are positioned at positions where the connectors can be fitted together. The lock portion and the lock receiving portion are provided ,
When the attachment body is attached to the connection box body, when the attachment body separated from the connection box body is brought close to the connection box body, the lock portion of at least one attachment portion of the plurality of attachment portions; Positioning the mounting body on the connection box body in a state where the lock receiving portion is close to each other and the lock portion and the lock receiving portion of other mounting portions are separated from each other, and the other mounting portion A second guide portion that guides the attachment body with respect to the connection box main body so as to go to a position where the connectors can be fitted to each other as the lock portion and the lock receiving portion come closer to each other ;
The second guide portion is provided in the vicinity of the one attachment portion, and has a tapered wall that guides toward the one attachment portion as the attachment body approaches the connection box body. it said that you are electrical junction box.   When the attachment body is attached to the connection box body, a guide portion is provided that guides the attachment body toward the connection box body while maintaining a position where the connectors can be fitted together. The electrical junction box according to claim 1.

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