JP2016096674A - Electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box having a novel structure that can simply and surely fasten a bolt fastening terminal and a conducting member and advantageously protect the bolt fastening terminal when plural bolt fastening terminals are mounted in a box main body.SOLUTION: A terminal cover 42 has two bolt fastening terminal mount portions 60 provided at both the sides between which a center partition wall portion 58 is sandwiched. Each bolt fastening terminal mount portion 60 has a connection portion side housing area 66 and a base end portion side mount area 68. Each connection portion side mount area 66 is compartmented by an annular wall portion 70 surrounding the connection portion 56 over the whole periphery thereof, and the annular wall portion 70 is provided with a mark representing a fastening end position of a bolt or nut 106 which fastens the bolt fastening terminal 40 and the conducting member 24.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electrical junction box including a bolt fastening terminal mounting portion to which a bolt fastening terminal crimped to an electric wire end is mounted.

  2. Description of the Related Art Conventionally, an electrical junction box used in an automobile electrical system has a box body that houses a conductive member such as a bus bar that constitutes an electric circuit. 2. Description of the Related Art A structure in which a bolt fastening terminal mounting portion on which a crimped bolt fastening terminal is mounted is known. For example, in Japanese Patent Laid-Open No. 2001-155798 (Patent Document 1), a recess is provided in a part of a box body, and a bolted terminal and an electric wire to which the terminal is crimped are accommodated and disposed in the recess. There has been proposed a structure provided with a bolting terminal mounting portion in which a bolting terminal is bolted to a conducting member disposed at a place.

  By the way, the bolt fastening terminal attached to the bolt fastening terminal mounting portion is formed with a connection portion having a bolt insertion hole at the tip of a metal piece bent in a substantially L shape as described in Patent Document 1, The caulking portion provided at the end portion is structured to be crimped to the core wire exposed at the end of the electric wire. Therefore, when the bolt is inserted into the bolt insertion hole and the connecting portion of the bolt fastening terminal is fastened to the conductive member of the box body, the base end side of the bolt fastening terminal and the crimped portion are exposed, and the water There is a risk of leakage of current due to the hook. Therefore, as described in Patent Document 1, the bolt terminal is attached to the terminal cover made of synthetic resin, the base end side of the bolt terminal and the crimp portion are covered with the terminal cover, and the terminal cover is assembled to the box body. Thus, a structure is employed in which the bolted terminal is positioned on the conducting member and the opening of the recess is covered with the terminal cover.

  However, in the electrical connection box of the conventional structure, the connection part of the bolt fastening terminal protrudes from the terminal cover and is exposed, so that the connection part interferes with other members during the assembly work to the bolt fastening terminal mounting part. It was inherent. In addition, since the connection part of the bolt fastening terminal is bolted to the conducting member of the box body with the terminal cover assembled in the recess of the box body, the bolt and nut that fasten the bolt fastening terminal and the conducting member are completely fastened. There was also a problem that it was difficult to confirm whether it was done.

  In addition, since the electrical connection box of the conventional structure can accommodate only one bolt fastening terminal in the terminal cover, when there are multiple bolt fastening terminals to be mounted, it is necessary to assemble the plurality of terminal covers respectively. There was a risk of increasing the number of points and complicating the assembly work.

JP 2001-155798 A

  The present invention has been made in the background of the above-described circumstances, and the problem to be solved is simple and reliable fastening of the bolting terminal and the conducting member when a plurality of bolting terminals are attached to the box body. It is an object of the present invention to provide an electrical junction box having a novel structure that can be carried out easily and can advantageously protect bolted terminals.

  Hereinafter, embodiments of the present invention made to solve the above-described problems will be described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  A first aspect of the present invention includes a box body that contains a conducting member that constitutes an electric circuit, and a recess in which a part of the peripheral wall of the box body is recessed inwardly, and has an L shape. A connection part having a bolt insertion hole is formed at the distal end portion of the bent metal piece, and a bolt fastening terminal mounting portion to which a bolt fastening terminal having an electric wire connected to the base end portion is attached, and the bolt fastening terminal is attached. A terminal cover made of a synthetic resin covering the bolt fastening terminal, and by assembling the terminal cover in the recess of the box body, the opening of the recess is covered with the terminal cover, and the bolt In the electrical connection box in which the fastening terminal is positioned and fastened with the conducting member disposed in the bolt fastening terminal mounting portion, the terminal cover is provided on both sides of the central partition wall portion. Was Each bolting terminal accommodating portion, each bolting terminal accommodating portion is provided with a connecting portion side accommodating region and a base end portion accommodating region, while each of the connecting portion side accommodating regions is the connecting portion. Is formed by an annular wall portion that surrounds the entire circumference, and a mark indicating a fastening end position of a bolt or a nut for fastening the bolt fastening terminal and the conducting member is provided on the annular wall portion. It is characterized by that.

  According to this aspect, since the terminal cover is provided with the two bolt tightening terminal accommodating portions, the single terminal cover on which the two bolt tightening terminals are mounted is assembled into the recess of the box body by a single operation. Two bolt fastening terminals can be attached to the bolt fastening terminal attachment portion, and the opening of the recess can be covered. Accordingly, it is possible to easily mount a plurality of bolt fastening terminals with a small number of parts and a small number of work steps.

  And the connection part side accommodation area | region in each bolt fastening terminal accommodating part is defined by the annular wall part surrounding a connection part over a perimeter. Therefore, at the time of assembling work or the like, the annular wall portion of the terminal cover interferes with other members, so that the connection portion of the bolt fastening terminal accommodated in the bolt fastening terminal accommodation portion may come into direct contact with the other member. It is prevented in advance, and the bolt fastening terminal can be advantageously protected, and deformation of the connecting portion can be prevented to improve the connection stability.

  In addition, since the annular wall portion is provided with a mark indicating the position of the bolt or nut fastening end for fastening the bolt fastening terminal and the conducting member, it is confirmed that the bolt and nut are completely fastened even if the terminal cover is used. Thus, reliable fastening of the bolted terminal and the conducting member can be easily realized.

  According to a second aspect of the present invention, in the one described in the first aspect, the mark indicating the fastening end position provided on the annular wall portion is constituted by a protruding end surface of the annular wall portion. It is.

  According to this aspect, since the mark indicating the fastening end position is constituted by the projecting end surface of the annular wall portion, the end surface of the bolt or nut that fastens the bolt fastening terminal and the conducting member is the surface of the projecting end surface of the annular wall portion. By fastening until it becomes one, complete fastening of the bolt fastening terminal and the conducting member can be easily confirmed visually. In addition, it is possible to indicate the fastening end position while minimizing the protruding height of the annular wall portion, which can contribute to downsizing of the electrical junction box.

  According to a third aspect of the present invention, in the first or second aspect, the partition wall portion of the terminal cover extends in parallel with the connection portion of the bolted terminal to be mounted. And a second partition wall extending perpendicularly to the first partition wall and extending to the base end side of the bolt fastening terminal is connected in an L shape in a side view, and on both sides of the first partition wall. While each said annular wall part which defines the said connection part side accommodation area | region of each said bolt fastening terminal accommodating part is provided, each said annular wall part is a base end of this 1st partition and this 1st partition A proximal side lateral wall and a distal side lateral wall extending in a direction perpendicular to the length direction of the first partition wall from the first part and the distal part, and an outer wall connecting the extending end parts of the proximal side lateral wall and the distal side lateral wall The outer wall faces the proximal side wall from the distal side wall. Positioning ribs extending in a length that does not reach the proximal side lateral wall, and at least an extended end portion of the positioning rib abuts on the connection portion of the bolt fastening terminal, The connecting portion is positioned and held between the positioning ribs.

  According to this aspect, the connection portion of the bolt fastening terminal is positioned and held between the positioning rib provided on the outer wall of the annular wall portion and the first partition. Accordingly, the two bolt fastening terminals can be held at the normal positions of the terminal cover only by attaching the bolt fastening terminals to the terminal cover. By attaching the terminal cover to the box body, the bolt insertion hole of the connection part of the two bolt fastening terminals can be easily positioned to the bolt arranged in the bolt fastening terminal attachment part, the bolt insertion hole of the conducting member, etc. can do.

  In addition, the positioning rib is formed on the outer wall of the annular wall portion with a length that does not reach the proximal side wall from the distal side wall. As a result, the outer wall is easily bent and deformed, and the connection portion can be easily fitted between the first partition wall and the positioning rib.

  In particular, since the positioning rib can reliably hold the distal end side of the connecting portion where the displacement amount increases, it is possible to effectively achieve both ease of insertion and reliable positioning.

  According to a fourth aspect of the present invention, in the one according to any one of the first to third aspects, two stud bolts inserted through the conducting member into the bolt fastening terminal mounting portion of the box body. The bolt fastening terminal mounting portion and the terminal cover are provided with a pair of guide fitting portions, and before the stud bolt is inserted into the bolt insertion hole of the bolt fastening terminal. Further, the guide fitting portion is fitted to position the bolt insertion hole of the bolt fastening terminal on the stud bolt.

  According to this aspect, the stud bolt, which is one of the fastening parts for fastening the bolt fastening terminal and the conductive member, is erected in the bolt fastening terminal mounting portion, and the stud bolt is inserted into the bolt insertion hole of the bolt fastening terminal. Difficult work is required. In this aspect, the fitting of the bolt fastening terminal mounting portion and the guide fitting portion provided in the terminal cover is performed before the stud bolt is inserted into the bolt insertion hole. Therefore, the box main body and the terminal cover are positioned in advance by the fitting of the guide fitting portion, whereby the positioning of the bolt insertion holes of the stud bolt and the bolt fastening terminal is ensured. Therefore, the stud bolt can be inserted into the bolt insertion hole without difficulty, and workability can be further improved.

  According to the present invention, since the two bolt tightening terminal accommodating portions are provided in the terminal cover, the two bolt tightening terminals can be mounted on the bolt tightening terminal mounting portion by a single operation and are recessed. The opening can be covered. That is, a plurality of bolt fastening terminals can be easily mounted with a small number of parts and a small number of work steps. Moreover, in the bolt tightening terminal accommodating portion, the connection portion of the bolt tightening terminal is surrounded by the annular wall portion over the entire circumference. Therefore, it is possible to prevent the connection part of the bolt fastening terminal from coming into direct contact with other members during assembly work, etc., thereby preventing the deformation of the connection part and improving the connection stability. be able to. In addition, since the annular wall portion is provided with a mark indicating the position of the bolt or nut fastening end for fastening the bolt fastening terminal and the conducting member, it is confirmed that the bolt and nut are completely fastened even if the terminal cover is used. Therefore, reliable fastening of the bolted terminal and the conductive member can be easily realized.

The perspective view which shows the electrical junction box as one Embodiment of this invention. FIG. 2 is an exploded perspective view of the electrical junction box shown in FIG. 1. The top view of the box main body shown in FIG. The front view of the box main body shown in FIG. The front view of the electrical-connection box shown in FIG. The top view of the terminal cover shown in FIG. The side view of the terminal cover shown in FIG. FIG. 6 is a perspective view of the terminal cover shown in FIG. 6 ((a) when viewed from the lower right side, (b) when viewed from the lower left side). FIG. 7 is a perspective view of the terminal cover shown in FIG. 6 with bolted terminals attached (when viewed from (a) obliquely downward to the right and (b) viewed from obliquely downward to the left).

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 9 show an electrical junction box 10 as one embodiment of the present invention. The electrical connection box 10 includes a box body 12, and an upper cover and a lower cover (not shown) that cover the upper surface 14 and the lower surface 16 of the box body 12, respectively. In the following description, “upper” means the upper side in FIG. 2, “lower” means the lower side in FIG. 2, “front” means the left side in FIG. 2, and “rear” means the right side in FIG. Shall.

  The box body 12 has a long rectangular block shape as a whole, and is integrally formed by injection molding or the like with an insulating synthetic resin such as polypropylene (PP) or polyamide (PA). As shown in FIG. 3, a plurality of relay mounting portions 18a and 18b and fuse mounting portions 20a and 20b are formed in the upper surface 14 of the box body 12 so as to open upward. In addition, although illustration is abbreviate | omitted, in the lower surface 16 of the box main body 12, several terminal accommodation holes are opened and formed below. That is, a crimp terminal or the like crimped to the end of the electric wire as the conductive member is accommodated in the terminal accommodating hole, and the bus bar 24 or the like as the conductive member constituting the electric circuit is provided in the bus bar accommodating groove or the like. It is designed to be supported.

  Then, from the upper surface 14 side of the box body 12, relays, fuses, and connectors (not shown) are mounted on the relay mounting portions 18a, 18b and the fuse mounting portions 20a, 20b. As a result, a tab terminal (not shown) protruding from the relay or fuse is connected to the crimp terminal of the terminal of the electric wire, the bus bar 24, or the like so as to be conductive.

  The peripheral part of the box body 12 is provided with a peripheral wall part 26 that is formed in a substantially rectangular cylindrical shape by extending in the vertical direction over the entire periphery. As shown in FIGS. 1 to 4, a bolt fastening terminal mounting portion 28 is provided at the circumferential center portion of the peripheral wall 26 a in front of the peripheral wall portion 26. More specifically, the bolt fastening terminal mounting portion 28 is adjacent to the recess 30 having a substantially rectangular shape when viewed from the front and opened in the front and up and down directions when a part of the peripheral wall 26a is recessed inward. And a stud bolt mounting portion 32 which is formed on the upper surface 14 of the box main body 12 to which a bolt fastening terminal 40 which will be described later is mounted.

  Two stud bolts 34 are erected on the stud bolt mounting portion 32 in a state where a head portion (not shown) is fitted in a bolt receiving hole (not shown). The bus bar terminals 36 of the bus bar 24 are inserted into the two stud bolts 34. More specifically, the bus bar 24 is a plate formed by punching a conductive metal plate or the like, and includes a bus bar terminal 36 having a bolt insertion hole 38 at the tip thereof. It is bent at a substantially right angle. Then, by inserting the bolt insertion holes 38 into the screw shaft portions 35 of the two stud bolts 34, the bus bar terminals 36 of the bus bar 24 are inserted into the screw shaft portions 35 of the two stud bolts 34 on the head portion. It is to be placed.

  As shown in FIGS. 1 and 2, a synthetic resin terminal cover 42 is attached to the recess 30 so that the two bolt fastening terminals 40 are attached to cover the two bolt fastening terminals 40. ing. In addition, guide concave grooves 44 that open inwardly defined by protrusions 43 projecting in an inverted L shape are formed on both side edges of the central portion in the vertical direction of the opening to the peripheral wall 26a of the recess 30. Is formed (see FIG. 3).

  As shown in FIG. 2, the bolt terminal 40 includes an electric wire 45 and a terminal fitting 48 made of a metal piece fixed to a core wire 46 exposed at the end of the electric wire 45. The electric wire 45 has a structure in which a core wire 46 obtained by bundling a plurality of metal wires such as copper, aluminum, or the like, which is a conductor, is covered with an insulating coating such as ethylene resin or styrene resin. On the other hand, the terminal fitting 48 is formed to be bent in an L shape, and extends from the base end portion of the cover crimping portion 50 crimped to the insulating coating of the electric wire 45 and the end of the electric wire 45. A core wire fixing portion 52 to which the core wire 46 is fixed is provided. Further, a connecting portion 56 having a bolt insertion hole 54 is provided at the tip of the terminal fitting 48. In addition, in order to understand easily, in FIG. 2, the electric wire 45 and the core wire 46 are described with the virtual line.

  As shown in FIG. 2, the terminal cover 42 has a substantially frame shape having a partition wall 58 at the center, and two bolt tightening terminal accommodating portions 60 on both sides sandwiching the partition wall 58. (See FIGS. 8 and 9). The partition wall portion 58 has a substantially horizontally long flat first partition wall 62 extending parallel to the connection portion 56 of the bolt fastening terminal 40 to be mounted (right side in FIG. 2), and the bolt fastening terminal 40 orthogonal to the first partition wall 62. It is comprised from the 2nd partition 64 of the substantially vertically long flat plate shape extended in the base end part side (lower side in FIG. 2). Accordingly, the first partition 62 and the second partition 64 are connected in an L shape in a side view as a whole.

  On the other hand, the bolt fastening terminal accommodating portion 60 is configured by a connecting portion side accommodating region 66 located on the first partition 62 side and a proximal end side accommodating region 68 located on the second partition 64 side. The connection portion side accommodation region 66 is defined by an annular wall portion 70 that surrounds the connection portion 56 of the bolt fastening terminal 40 over the entire circumference, and is provided on both sides with the first partition wall 62 interposed therebetween ( FIG. 8 and FIG. 9).

  More specifically, as shown in FIG. 6, the annular wall portion 70 is orthogonal to the length direction of the first partition wall 62 from the first partition wall 62 and the base end portion and the distal end portion of the first partition wall 62. The base end side lateral wall 72 and the distal end side lateral wall 74 that extend in the direction, and an outer wall 76 that connects the extending end portions of the lateral walls 72 and 74 are configured. In addition, in order to understand easily, in FIG. 6, the connection part 56 of the bolt fastening terminal 40 is described with the virtual line. 8, at the lower end of the outer wall 76, the positioning ribs 78 extending from the distal side lateral wall 74 toward the proximal side lateral wall 72 so as not to reach the proximal side lateral wall 72 are vertically It protrudes downward in the direction and extends toward the inside of the annular wall 70. The positioning rib 78 has a substantially trapezoidal cross-sectional shape, and the outer surface is a tapered surface 80 that is inclined inward from the outer surface of the outer wall 76. Further, a positioning rib 82 extending substantially the entire length of the first partition wall 62 protrudes downward in the vertical direction and extends inward of the annular wall 70 at the lower end portion of the first partition wall 62. Has been.

  On the other hand, the base end side accommodation area 68 is supported by the second partition wall 64 and extends in parallel with a gap between the inner vertical wall portion 84 and the outer vertical wall portion 86 on both sides of the second partition wall 64. And is provided on both sides of the second partition wall 64 (see FIGS. 8 and 9). The inner vertical wall portion 84 has a substantially rectangular flat plate shape, and is formed with a slightly longer vertical dimension than the outer vertical wall portion 86. On the other hand, the outer vertical wall portion 86 is formed in a substantially rectangular flat plate shape, and pressure contact ribs 88a and 88b are provided on the inner surface so as to protrude inwardly apart from each other in the vertical direction. Further, the outer vertical wall portion 86 is formed to extend longer with respect to one side (the back side in FIG. 2) sandwiching the second partition wall 64 therebetween. Further, the guide plate portion 92 is formed by a region surrounded by a rib 90 projecting in an inverted L shape in front view on the lower end portions on both sides of the outer vertical wall portion 86.

  As shown in FIGS. 1 to 3, of the peripheral wall portion 26, the peripheral walls 26 a and 26 c facing each other in the longitudinal direction of the box body 12 include a lock portion 94 and a cover in the vicinity of the upper opening of the box body 12. A lock portion 96 is projected. The lock part 94 and the locked part 96 can be locked with the upper surface 14 of the box body 12 in a cover state by being fitted to a locked part or a lock part of an upper cover (not shown). On the other hand, of the peripheral wall portion 26, lock portions 98 and 100 project from the peripheral walls 26 b and 26 d facing each other in the width direction of the box body 12 in the vicinity of the lower opening of the box body 12. The lock part 98 can lock the lower surface 16 of the box body 12 in a cover state by fitting with a locked part of a lower cover (not shown). On the other hand, the electrical connection box 10 can be fixed to the fixed bracket by fitting the lock portion 100 to a fixed bracket (not shown).

  The peripheral wall 26a of the peripheral wall portion 26 is formed with a mounting leg portion 102 that extends downward in a substantially strip shape. The lower end of the mounting leg portion 102 extends outward in a substantially rectangular flat plate shape. A bolt fixing portion 104 is provided. And the electric connection box 10 can be arrange | positioned with respect to the desired position of a vehicle by bolting this bolt fixing | fixed part 104 to the predetermined position of a vehicle.

  When assembling the terminal cover 42 having such a configuration in the recess 30 of the box body 12, first, as shown in FIG. 2, both sides of the terminal cover 42 (front side and rear side in FIG. 2). The bolt fastening terminal 40 is mounted from the side). More specifically, as shown in FIGS. 8 and 9, the connection portion 56 of the bolt fastening terminal 40 is connected to the bolt fastening terminal accommodating portion 60 that opens toward both side surfaces of the terminal cover 42. The bolting terminal 40 is inserted in a state where the bolting terminal 40 is positioned on the side housing region 66 side and the base end portion of the bolting terminal 40 is positioned on the base end side housing region 68 side. At the time of such insertion, in the connecting portion side accommodation region 66, the connecting portion 56 first comes into contact with the tapered surface 80 of the positioning rib 78, whereby the positioning rib 78 is bent and deformed upward, and further pressing is allowed. The When the bolt fastening terminal 40 is further pushed toward the bolt fastening terminal accommodating portion 60 side, the connecting portion 56 gets over the positioning rib 78, whereby the positioning rib 78 is elastically restored. As a result, as shown in FIG. 6, the connection portion 56 is in contact with the extended end portion 105 of the positioning rib 78 and the positioning rib 82 of the first partition wall 62 and the positioning rib 78 of the outer wall 76. It is positioned and held between. On the other hand, at the time of insertion, in the proximal end side accommodation region 68, pushing is performed in a state where the cover crimping portion 50 and the core wire fixing portion 52 at the proximal end are pressed against the press contact ribs 88a and 88b. As a result, as shown in FIG. 9, the base end portion of the bolt fastening terminal 40 is in a state where the covering crimping portion 50 and the core wire fixing portion 52 at the base end portion are pressed against the press contact ribs 88a and 88b. It is stably held with respect to the end side accommodation region 68.

  Next, the terminal cover 42 to which the two bolt fastening terminals 40 are mounted in this way is assembled in the recess 30 of the box body 12. More specifically, first, the guide plate portions 92 provided on the lower end portions on both sides of the terminal cover 42 are inserted into the guide concave grooves 44 provided on both side edges of the opening of the recess 30. Thereby, the bolt insertion hole 54 of the bolt fastening terminal 40 can be positioned with respect to the stud bolt 34. In this embodiment, the guide plate portion 92 and the guide groove 44 constitute a pair of guide fitting portions in this way. Subsequently, by further pushing the terminal cover 42 downward in the vertical direction, the stud bolt 34 is inserted into the bolt insertion hole 54 of the bolt fastening terminal 40, and the bolt insertion hole 54 of the bolt fastening terminal 40 is inserted into the bolt fastening terminal mounting portion. It is arranged in a state of being positioned at the bus bar terminal 36 of the bus bar 24 arranged at 28. Finally, as shown in FIG. 1 and FIG. 2, the bolt fastening terminal 40 is bolted to the bus bar terminal 36 by assembling the nut 106 from above the stud bolt 34. Yes.

  It should be noted that the bolts may be fastened until the upper end surface of the nut 106 that fastens the bolt fastening terminal 40 and the bus bar terminal 36 is flush with the protruding end surface 108 of the annular wall 70. Therefore, complete fastening of the bolt fastening terminal 40 and the bus bar terminal 36 can be easily confirmed visually. Therefore, the fastening end position can be indicated while suppressing the protruding height of the annular wall portion 70 to the minimum necessary, and this can contribute to the miniaturization of the electrical junction box 10. Thus, in this embodiment, the mark indicating the fastening end position provided on the annular wall portion 70 is formed by the protruding end surface 108 of the annular wall portion 70. As a result, the opening of the recess 30 provided in the peripheral wall 26 a of the box body 12 is covered with the outer vertical wall 86.

  According to the electrical junction box 10 of this embodiment having such a structure, since the two bolt fastening terminal accommodating portions 60 are provided in the terminal cover 42, two bolt fastening terminals can be obtained by a single operation. 40 can be mounted on the bolt fastening terminal mounting portion 28 of the box body 12 and the opening of the recess 30 of the box body 12 can be covered. As a result, the number of parts can be reduced, and the two bolt fastening terminals 40 can be easily assembled to the box body 12 with less work man-hours. Moreover, in the connection part side accommodation area | region 66 of the bolt fastening terminal accommodating part 60, since the connection part 56 is enclosed over the perimeter by the annular wall part 70, the connection part 56 is others at the time of an assembly | attachment operation etc. Direct contact with the member is prevented beforehand. Therefore, it is possible to advantageously protect the connection portion 56 and prevent deformation and the like to improve the connection stability.

  Furthermore, only by attaching the bolt fastening terminal 40 to the terminal cover 42, the connecting portion 56 of the bolt fastening terminal 40 is positioned and held between the positioning rib 78 of the outer wall 76 and the positioning rib 82 of the first partition wall 62. It has become. Therefore, when the terminal cover 42 is assembled to the box body 12, the bolt insertion hole 54 of the connection portion 56 of the two bolt fastening terminals 40 is used as the stud bolt 34 disposed in the bolt fastening terminal mounting portion 28 or the bus bar of the bus bar 24. The terminal 36 can be easily positioned in the bolt insertion hole 38 or the like. In addition, since the positioning rib 78 is formed with a length that does not reach from the distal side lateral wall 74 to the proximal side lateral wall 72 of the outer wall 76 of the annular wall portion 70, the positioning rib 78 is easily bent and deformed. Therefore, the connection portion 56 can be easily fitted into the connection portion side accommodation region 66. Further, the distal end side of the connection portion 56 of the bolt fastening terminal 40 that is considered to have a relatively large displacement amount due to an external force applied to the electric wire 45 is reliably held by the positioning rib 78 abutting. From the above, it is possible to effectively achieve both easy insertion and reliable positioning.

  In addition, before the bolt insertion hole 54 of the bolt fastening terminal 40 is inserted into the stud bolt 34 erected on the bolt fastening terminal mounting portion 28, the guide plate portion 92 of the terminal cover 42 is formed in the opening of the recess 30. It fits in the guide ditch | groove 44 provided in the both sides edge part. Thereby, the bolt insertion hole 54 of the bolt fastening terminal 40 is positioned with respect to the stud bolt 34, so that the stud bolt 34 can be inserted into the bolt insertion hole 54 of the bolt fastening terminal 40 without difficulty. Thus, the workability can be improved.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, in this embodiment, the bolt fastening terminal 40 inserted into the stud bolt 34 and the bus bar 24 are fastened by the nut 106, but the bolt fastening terminal 40 and the bus bar 24 arranged on the nut 106 are fastened by the bolt. May be. In the present embodiment, the terminal cover 42 is provided with the fitting portion (guide plate portion 92), while the box body 12 is provided with the fitted portion (guide groove 44). .

10: Electrical connection box, 12: Box body, 24: Bus bar (conducting member), 26a to d: Peripheral wall, 28: Bolt tightening terminal mounting part, 30: Recess, 34: Stud bolt, 40: Bolt tightening terminal, 42 : Terminal cover, 44: Guide groove (guide fitting part), 45: Electric wire, 48: Terminal fitting (metal piece), 54: Bolt insertion hole, 56: Connection part, 58: Bulkhead part, 60: Bolt tightening terminal Housing portion, 62: first partition wall, 64: second partition wall, 66: connection portion side housing region, 68: proximal end side housing region, 70: annular wall portion, 72: proximal end side wall, 74: distal end side wall , 76: outer wall, 78: positioning rib, 92: guide plate portion (guide fitting portion), 105: extended end portion, 106: nut, 108: protruding end surface

Claims (4)

A box body containing a conductive member constituting an electric circuit;
A part of the peripheral wall of the box body is configured to include a recess recessed inward, and a connection portion having a bolt insertion hole is formed at the distal end portion of the metal piece bent in an L shape, and is formed at the proximal end portion. A bolt fastening terminal mounting portion to which a bolt fastening terminal to which an electric wire is connected is attached;
A synthetic resin terminal cover that is attached to the bolt fastening terminal and covers the bolt fastening terminal;
By assembling the terminal cover in the recess of the box body, the opening of the recess is covered with the terminal cover, and the bolt fastening terminal is disposed in the bolt fastening terminal mounting portion. In an electrical junction box that is positioned on a member and bolted,
The terminal cover includes two bolted terminal accommodating portions provided on both sides of a central partition wall portion;
While each of the bolt tightening terminal accommodating portion is provided with a connecting portion side accommodating region and a base end portion accommodating region,
Each of the connecting portion side accommodation areas is defined by an annular wall portion surrounding the connecting portion over the entire circumference,
An electrical connection box, wherein the annular wall portion is provided with a mark indicating a fastening end position of a bolt or a nut for fastening the bolt fastening terminal and the conducting member.   The electrical junction box according to claim 1, wherein a mark indicating the fastening end position provided on the annular wall portion is configured by a protruding end surface of the annular wall portion. The partition wall portion of the terminal cover has a first partition wall extending parallel to the connection portion of the bolt fastening terminal to be mounted, and a first partition wall extending perpendicularly to the first partition wall and extending to the base end side of the bolt fastening terminal. 2 partitions are connected in an L shape in side view,
While the annular wall portions that define the connection portion side accommodation regions of the bolt fastening terminal accommodation portions are provided on both sides of the first partition wall,
Each of the annular wall portions includes the first partition, a proximal side lateral wall and a distal side lateral wall extending in a direction perpendicular to the length direction of the first partition from the proximal end and the distal end of the first partition, A base end side lateral wall and an outer wall connecting the extended end portions of the distal end side lateral wall;
In the outer wall, a positioning rib is provided that extends from the distal side lateral wall toward the proximal side lateral wall so as not to reach the proximal side lateral wall, and at least an extended end portion of the positioning rib is the bolt fastening terminal. The electrical connection box according to claim 1, wherein the connection portion is positioned and held between the first partition and the positioning rib.   Two stud bolts inserted through the conducting member are erected on the bolt fastening terminal mounting portion of the box body, while a pair of guide fitting portions are provided on the bolt fastening terminal mounting portion and the terminal cover. Before the stud bolt is inserted into the bolt insertion hole of the bolt fastening terminal, the guide fitting portion is fitted, and the bolt insertion hole of the bolt fastening terminal is connected to the stud bolt. The electrical junction box according to claim 1, wherein the electrical junction box is positioned.

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