JP5843619B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box mounted on an automobile.

  A variety of electronic devices are mounted on automobiles. In order to perform power supply and signal transmission to these various electronic devices, electrical junction boxes are arranged at appropriate locations in the automobile (see Patent Document 1).

  FIG. 8 is a perspective view showing a conventional electrical junction box. FIG. 9 is a plan view of the side cover and terminals shown in FIG. The electrical connection box 201 includes a case main body 202, a bolt 3 erected from the upper surface of the case main body 202, a bus bar 7 assembled to the case main body 202, a terminal 4 connected to the power line 8, and a terminal 4. And an attached side cover 205.

  The bolt 3 has a head fixed to the case main body 202 and a shaft portion standing from the upper surface of the case main body 202 with a bolt insertion hole provided in the bus bar 7 being passed. A nut (not shown) is screwed onto the shaft portion. The bolt 3 is for maintaining the state in which the bus bar 7 and the terminal 4 are electrically connected with the bus bar 7 and the terminal 4 superimposed on the bus bar 7 sandwiched between the nuts.

  The terminal 4 is obtained by pressing or the like on a metal plate. A bolt insertion hole 40 is provided at one end, an electric wire connection portion 43 is provided at the other end, and a central portion is bent. Has been. In the present specification, a flat portion provided with the bolt insertion hole 40 at one end portion of the terminal 4 is referred to as a “bus bar connection portion” and denoted by reference numeral 41. Further, a bent portion in the central portion of the terminal 4 is referred to as a “bent portion” and is denoted by reference numeral 42. The bus bar connection portion 41 is a portion that is overlapped with the bus bar 7 and fixed to the case main body 202 by the bolt 3 and the nut.

  The side cover 205 is attached to the side surface of the case main body 202 to form a cover main body 250 constituting the outer wall of the case main body 202, and is formed in a frame shape, and supports the bent portion 42 of the terminal 4 through the terminal 4 on the inner side. Hook 251 is provided. Further, a notch 252 having a width substantially equal to the width of the bent portion 42 is provided at the upper end portion of the hook 251, and the terminal 4 is positioned by positioning the bent portion 42 in the notch 252. It has become.

  Further, when the terminal 4 is attached to the side cover 205, the bus bar connecting portion 41 is passed through the hook 251 from below the hook 251 with the bus bar connecting portion 41 standing in parallel with the cover body 250. From this state, the terminal 4 is attached so as to be rotated 90 degrees.

  In this electrical connection box 201, the side cover 205 to which the terminal 4 is attached is attached to the side surface of the case body 202 along the standing direction of the bolt 3, so that the bolt 3 passes through the bolt insertion hole 40 of the terminal 4. Is done. Further, when the nut is screwed to the bolt 3, the terminal 4 is fixed to the case body 202 and the connection state between the terminal 4 and the bus bar 7 is maintained.

JP-A-6-310198

  However, in the conventional electrical junction box 201 described above, the bus bar connection portion 41 of the terminal 4 attached to the side cover 205 is swung in the width direction (arrow A direction), and the side cover 205 is moved to the case body 202. There is a problem that the bolt 3 is difficult to pass through the bolt insertion hole 40 when mounting and the workability is poor. The side cover 205 is provided with the notches 252 for positioning the terminals 4 as described above. The notches 252 and both ends of the terminals 4 in the width direction are indicated by arrows in FIG. Only point contact is made at the portions indicated by F and G. With such a structure, it is impossible to completely suppress the deflection of the terminal 4.

  Therefore, an object of the present invention is to provide an electrical junction box that can improve workability when a bolt is passed through a bolt insertion hole of the terminal by suppressing a swing of the terminal attached to the side cover. And

  In order to achieve the above object, the invention described in claim 1 includes a case main body, a bolt erected from the upper surface of the case main body, a bolt insertion hole at one end, and a wire connecting portion at the other end. A center portion is bent, and the bolt is passed through the bolt insertion hole and a nut is screwed into the bolt to be fixed to the case body, and the terminal is attached. An electrical junction box in which the bolt is passed through the bolt insertion hole of the terminal when the side cover is attached to a side surface of the case body, and is formed in a frame shape on the side cover. A hook that supports the central part of the terminal through the terminal on the inside, and protrudes from the hook, and abuts on both edges of the terminal in the width direction to restrict the terminal from swinging in the width direction. A pair of oscillation regulation unit, an electrical connection box, characterized in that is provided.

  According to the first aspect of the present invention, the side cover is formed in a frame shape, and has a hook that supports the central portion of the terminal through the terminal on the inside, and protrudes from the hook. Since there is provided a pair of deflection restricting portions that abut against the edge and restrict the terminal from swinging in the width direction, it is possible to improve workability when the bolt is passed through the bolt insertion hole of the terminal. An electrical junction box can be provided.

It is a perspective view which shows the electrical junction box concerning one Embodiment of this invention. FIG. 2 is an exploded view of the electrical junction box shown in FIG. 1. It is a top view of the side cover and terminal which were shown by FIG. It is a perspective view of the side cover shown by FIG. FIG. 5 is a plan view of the side cover shown in FIG. 4. It is a perspective view of the terminal and electric wire which were shown by FIG. It is a top view of the terminal and electric wire which were shown by FIG. It is a perspective view which shows the conventional electrical junction box. FIG. 9 is a plan view of a side cover and terminals shown in FIG. 8.

  An “electric connection box” according to an embodiment of the present invention will be described with reference to FIGS.

  The electrical junction box 1 of the present invention is mounted on an automobile and supplies power and transmits signals to an electronic device mounted on the automobile. In the present invention, a junction block (also referred to as a junction box), a fuse block (also referred to as a fuse box), and a relay block (also referred to as a relay box) are collectively referred to as an electrical connection box.

  1 and 2, the electrical junction box 1 is assembled to the case body 2, the cassette block 6 assembled to the case body 2, the bus bar 7 assembled to the cassette block 6, and the cassette block 6. A bolt block 10, a terminal 4 connected to the power line 8, a side cover 5 attached to the side surface 2 c of the case body 2 with the terminal 4 attached, and a plurality of unillustrated attached to the cassette block 6. An electronic component, an upper cover (not shown) attached to the upper surface 2 a of the case body 2, and a lower cover (not shown) attached to the lower surface 2 b of the case body 2 are provided.

  The case body 2 is made of synthetic resin, and includes an outer wall 21 and a partition wall 22 that partitions the inside of the outer wall 21. Further, a notch 21 a is provided in a portion of the outer wall 21 where the side cover 5 is mounted.

  The cassette block 6 is made of a synthetic resin and is formed in a block shape. The cassette block 6 has a terminal connection portion 71 (described later) of the bus bar 7 and a power supply connection portion 61 where a bus bar connection portion 41 (described later) of the terminal 4 is positioned, a relay mounting portion 62 where a relay is mounted, and a fuse where a fuse is mounted. A mounting portion 63, a locking portion 64 that locks to the case body 2, and the like are provided. The power connection 61 is provided with an opening 60 that exposes the terminal connection 71 of the bus bar 7 assembled inside the cassette block 6. The cassette block 6 is assembled to the case body 2 from the lower surface 2b side, as indicated by an arrow C in FIG.

  The bus bar 7 is a wiring member that branches an electric power input by being electrically connected to the terminal 4 into a plurality of electric wires (not shown) through relays, fuses, etc., and a metal plate is subjected to press working or the like. Can be obtained. The bus bar 7 is provided with a terminal connection portion 71 electrically connected to the terminal 4, a relay connection portion 72 electrically connected to the relay, a fuse connection portion 73 electrically connected to the fuse, and the like. Further, the terminal connection portion 71 is formed in a plate shape and is provided with a bolt insertion hole 70.

  The bolt block 10 includes a bolt 3 having a head portion 31 and a shaft portion 32, and a resin member 9 attached to the head portion 31. The resin member 9 of the bolt block 10 is assembled to the cassette block 6, and the cassette block 6 is assembled to the case body 2, so that the shaft portion 32 of the bolt 3 is passed through the bolt insertion hole 70 of the bus bar 7. The main body 2 is erected from the upper surface 2a. A nut (not shown) is screwed to the shaft portion 32. The bolt 3 is for maintaining the state where the bus bar 7 and the terminal 4 are electrically connected with the bus bar 7 and the terminal 4 overlapped with the bus bar 7 sandwiched between the nuts.

  The power line 8 is an electric wire for supplying power from a power source such as a battery or an alternator to the bus bar 7 of the electrical connection box 1. As shown in FIG. It is configured.

  The terminal 4 is obtained by subjecting a metal plate to press working or the like. As shown in FIGS. 6 and 7, the terminal 4 is provided with a bolt insertion hole 40 at one end, an electric wire connecting portion 43 at the other end, and is bent at the center. In the present specification, a flat portion provided with the bolt insertion hole 40 at one end portion of the terminal 4 is referred to as a “bus bar connection portion” and denoted by reference numeral 41. Further, a bent portion in the central portion of the terminal 4 is referred to as a “bent portion” and is denoted by reference numeral 42. The bus bar connection portion 41 is a portion that is overlapped with the bus bar 7 and fixed to the case body 2 by the bolt 3 and the nut. The wire connecting portion 43 extends from the bent portion 42 and includes a plate portion 43c for positioning the power supply line 8 on the surface, a pair of core wire crimping pieces 43a for caulking the core line 81 of the power supply line 8, and an insulating sheath 82 of the power supply line 8. And a pair of insulating skin caulking pieces 43b.

  The side cover 5 is made of a synthetic resin. As shown in FIGS. 4 and 5, the side cover 5 has a cover body 50 that is attached to the side surface 2 c of the case body 2 so as to close the notch 21 a and forms the outer wall 21 of the case body 2, and has a frame shape. A hook 51 that is formed and supports the bent portion 42 of the terminal 4 through the terminal 4 on the inside, protrudes from the hook 51, abuts against both edges in the width direction of the terminal 4, and the terminal 4 extends in the width direction (in FIGS. And a pair of shake restricting portions 53 for restricting the shake in the direction of arrow A). Further, a notch 52 having a width substantially equal to the width of the bent portion 42 is provided at the upper end portion of the hook 51.

  The hook 51 is continuous with the inner surface of the cover main body 50. The pair of shake restricting portions 53 are formed in a bar shape, and project from the portions on both sides of the notch 52 in the hook 51 to the opposite side to the cover body 50. Further, the inner surface of the notch 52 (the portion that contacts both edges in the width direction of the terminal 4) and the outer surface of each runout restricting portion 53 are formed flush with each other. The bent portion 42 is positioned in the notch 52 and the terminal 4 is positioned by positioning one end of the bus bar connecting portion 41 between the pair of shake restricting portions 53.

  Further, when attaching the terminal 4 to the side cover 5, the bus bar connecting portion 41 is passed from the lower side of the hook 51 into the hook 51 with the bus bar connecting portion 41 standing in parallel with the cover body 50, From this state, the terminal 4 is attached so as to be rotated 90 degrees.

  Thus, in the present invention, the side cover 5 is provided with a pair of shake restricting portions 53. As a result, as shown in FIG. 3, both the hook 51 and the shake restricting portion 53 abut against both edges in the width direction of the terminal 4 to restrict the shake of the terminal 4. Can be suppressed. That is, in the conventional side cover, the length of the portion that contacts both edges in the width direction of the terminal 4 is only the resin thickness d in the hook 51. However, in the side cover 5 of the present invention, the terminal 4 The length of the portion in contact with both edges in the width direction is a length obtained by combining the thickness d of the resin in the hook 51 and the protrusion amount e of the deflection regulating portion 53, so that the terminal 4 can be reliably prevented from shaking. it can. Further, the pair of shake restricting portions 53 does not hinder the operation of passing the terminal 4 through the hook 51.

  In this electrical junction box 1, as shown by the arrow B in FIG. 2, the side cover 5 to which the terminal 4 is attached is attached to the side surface 2c of the case body 2 along the standing direction of the bolt 3, The shaft portion 32 of the bolt 3 is passed through the bolt insertion hole 40 of the terminal 4, and the terminal connection portion 71 and the bus bar connection portion 41 are overlapped. In this operation, since the terminal 4 does not swing with respect to the side cover 5 as described above, the position of the bolt insertion hole 40 does not shift with respect to the shaft portion 32 of the bolt 3 and the bolt insertion smoothly. The shaft portion 32 is passed through the hole 40. Further, when the nut is screwed onto the bolt 3, the terminal 4 is fixed to the case body 2 and the connection state between the terminal 4 and the bus bar 7 is maintained.

  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.

DESCRIPTION OF SYMBOLS 1 Electrical junction box 2 Case main body 3 Bolt 4 Terminal 5 Side cover 40 Bolt insertion hole 43 Electric wire connection part 51 Hook 53 Run-out control part

Claims (1)

A case body, a bolt erected from the upper surface of the case body, a bolt insertion hole is provided at one end, an electric wire connection portion is provided at the other end, a central portion is bent, and the bolt insertion hole is A terminal that is fixed to the case main body when the bolt is passed and a nut is screwed into the bolt; and a side cover that has the terminal attached thereto, and the side cover is provided on a side surface of the case main body. In the electrical connection box in which the bolt is passed through the bolt insertion hole of the terminal by being mounted,
In the side cover,
A hook formed in a frame shape and supporting the central portion of the terminal through the terminal on the inside;
A pair of shake restricting portions that protrude from the hook and abut against both edges in the width direction of the terminal to restrict the terminal from swinging in the width direction are provided.

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