JP2019103215A - Electric connection box - Google Patents

Abstract

To provide an electric connection box that is able to hinder deformation of a projection of a frame.SOLUTION: An electric connection box comprises: a frame 2 having an opening; and a cover 6 covering the opening and having a side wall fitted to the frame. The frame projects toward a direction in which the frame is fitted to the cover, the frame having a projection 45 opposite an external surface 63a of a side wall while the frame is held fitted to the cover. The cover has a projection 64 having a contact surface 64a projecting from an internal surface 63b of the side wall and facing a leading end 63c of the side wall. The position of the contact surface of the side wall is opposite the projection while the fitted state is held. The contact surface inclines toward the leading end of the side wall as the contact surface is away from the internal surface of the side wall.SELECTED DRAWING: Figure 9

Description

  The present invention relates to an electrical connection box.

  Conventionally, there is an electrical connection box having a frame and a cover that closes the opening of the frame. Patent Document 1 discloses an electrical connection box including an upper cover mounted on the upper surface of a case main body and a lower cover mounted on the lower surface of the case main body. The electrical connection box of Patent Document 1 further includes a side cover attached to the side surface of the case main body with the terminals attached.

JP, 2013-143802, A

  Some of the frames of the electrical connection box have a projection projecting toward the upper cover and the lower cover. The protrusion faces, for example, the outer surface of the cover when the frame and the cover are fitted. When the frame and the cover are assembled, if the protrusion which should be located outside the cover gets into the inside of the cover, the protrusion may be deformed. It is desirable that the deformation of the projection can be suppressed.

  An object of the present invention is to provide an electrical connection box capable of suppressing deformation of a protrusion of a frame.

  The electrical connection box of the present invention comprises a frame having an opening, and a side wall having a side wall fitted to the frame, the cover closing the opening, the frame being in the direction of fitting with the cover. The cover has a projection facing the outer surface of the side wall in a fitted state in which the frame is fitted with the cover, and the cover protrudes from the inner side of the side wall, and The projection has a contact surface facing the front end side of the side wall, and the position of the contact surface in the side wall is a position facing the projection in the fitted state, and the contact surface is the contact surface. It is characterized by having a slope which goes to the tip side of the side wall as it separates from an inner surface of the side wall.

  An electrical connection box according to the present invention comprises a frame having an opening, and a cover having a side wall fitted to the frame and closing the opening. The frame projects in a direction of engagement with the cover, and has a projection facing the outer surface of the side wall in a fitted state in which the frame is engaged with the cover. The cover has a projection that protrudes from the inner surface of the side wall and has an abutment surface facing the tip of the side wall. The position of the contact surface in the side wall is a position facing the protrusion in the fitted state. The abutment surface has a slope toward the tip of the side wall as it gets away from the inner side surface of the side wall.

  According to the electrical connection box according to the present invention, when the projecting portion gets into the inside of the cover at the time of assembly, the projecting portion is locked by the abutting surface. Therefore, the electrical connection box according to the present invention has the effect of being able to suppress the deformation of the protrusion.

FIG. 1 is a perspective view of the electrical connection box according to the embodiment. FIG. 2 is an exploded perspective view of the electrical connection box according to the embodiment. FIG. 3 is a front view of the frame according to the embodiment. FIG. 4 is an exploded perspective view of the frame according to the embodiment. FIG. 5 is a perspective view of the side cover according to the embodiment. FIG. 6 is a perspective view of a side cover holding a terminal. FIG. 7 is a perspective view showing the assembly of the lower cover to the frame. FIG. 8 is a front view showing a fitted state of the frame and the lower cover. FIG. 9 is a cross-sectional view showing a fitted state of the frame and the lower cover. FIG. 10 is a cross-sectional view showing a process leading to a wrong fitting. FIG. 11 is a cross-sectional perspective view showing the contact surface according to the embodiment. FIG. 12 is a cross-sectional view showing an abutment surface according to the embodiment. FIG. 13 is a cross-sectional view showing a state in which the projection is in contact with the contact surface. FIG. 14 is a perspective view for explaining possible problems. FIG. 15 is a perspective view showing a protective rib of the embodiment. FIG. 16 is a front view showing the protective rib of the embodiment. FIG. 17 is a top view of a side cover according to a first modification of the embodiment. FIG. 18 is a perspective view of a side cover according to a first modification of the embodiment. FIG. 19 is a view showing a state in which the side cover according to the first modification of the embodiment holds a terminal.

  Hereinafter, an electrical connection box according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily conceived by those skilled in the art or those that are substantially the same.

[Embodiment]
Embodiments will be described with reference to FIGS. 1 to 16. The present embodiment relates to an electrical connection box. 1 is a perspective view of an electrical connection box according to the embodiment, FIG. 2 is an exploded perspective view of the electrical connection box according to the embodiment, FIG. 3 is a front view of a frame according to the embodiment, and FIG. 5 is a perspective view of the side cover according to the embodiment, FIG. 6 is a perspective view of the side cover holding the terminal, and FIG. 7 is a perspective view showing the assembly of the lower cover to the frame, 8 is a front view showing the fitted state of the frame and the lower cover, FIG. 9 is a cross-sectional view showing the fitted state of the frame and the lower cover, FIG. 10 is a cross-sectional view showing a process leading to misfitting 12 is a cross-sectional view showing a contact surface according to the embodiment, and FIG. 13 is a cross-sectional view showing a state in which a protrusion is in contact with the contact surface, FIG. 14 is a perspective view for explaining possible problems.

  The IX-IX cross section of FIG. 8 is shown by FIG. XI-XI cross section of FIG. 9 is shown by FIG. 11 and FIG.

  As shown in FIGS. 1 and 2, the electrical connection box 1 of the present embodiment has a frame 2, an upper cover 5, and a lower cover 6. The electrical connection box 1 constitutes a wire harness WH together with the electric wire W. The wire harness WH is mounted on a vehicle such as a car and connects the devices mounted on the vehicle. The wire harness WH has a plurality of electric wires W used for power supply and signal communication. One end of each wire W is connected to, for example, an electronic component stored in the electrical connection box 1. The other end of each wire W is connected to each device (external device) such as a battery or an electrical component via, for example, a connector or the like.

  The electrical connection box 1 may also be called a junction box, a fuse box, a relay box or the like depending on the type of electronic component to be accommodated, but in the present embodiment, these are collectively referred to as an “electrical connection box”.

  The frame 2 of the present embodiment is a cylindrical member in which both ends in the axial direction AX are open. The frame 2 has a frame body 3 and a side cover 4. The cross-sectional shape of the frame body 3 is, for example, a rectangle. The frame body 3 and the side cover 4 are formed of, for example, an insulating synthetic resin. The side cover 4 is fixed to the frame body 3. The side cover 4 constitutes the outer wall of the frame 2 together with the frame body 3.

  The upper cover 5 closes one opening 21 of the frame 2. The upper cover 5 has a locked portion 51. The frame 2 has a locking portion 25 corresponding to the locked portion 51. The upper cover 5 is fixed to the frame 2 by the engagement of the engaged portion 51 and the engagement portion 25 and the opening 21 is closed.

  The lower cover 6 closes the other opening 22 in the frame 2. The lower cover 6 has a locked portion 66. The frame 2 has a locking portion 24 corresponding to the locked portion 66. The lower cover 6 is fixed to the frame 2 and the opening 22 is closed by the engagement of the engaged portion 66 and the engagement portion 24. The upper cover 5 and the lower cover 6 are formed of, for example, an insulating synthetic resin.

  In the following description, in the axial direction AX, the upper cover 5 side with respect to the frame 2 is referred to as “upper side AX1”, and the lower cover 6 side with respect to the frame 2 is referred to as “lower side AX2”. The upper side AX1 and the lower side AX2 may be different from the upper side and the lower side in a state of being mounted on a vehicle. For example, the electrical connection box 1 may be mounted on the vehicle in a posture in which the axial direction AX does not match the vertical direction of the vehicle.

  As shown in FIG. 2, the lower cover 6 has a bottom wall 61 and a side wall 62. The bottom wall portion 61 is a flat or plate-like component. The side wall 62 is erected from the peripheral edge of the bottom wall portion 61. The side wall 62 has a plurality of flat wall portions 62a. The wall 62a is a wall substantially parallel to the axial direction AX. The plurality of walls 62 a surround the bottom wall 61. The side wall 62 is a wall that fits with the frame 2.

  As shown in FIG. 3, the frame 2 has a first wall portion 23a. The first wall portion 23a is a wall portion substantially parallel to the axial direction AX. The first wall portion 23 a is a part of the peripheral wall 23 of the frame 2. The peripheral wall 23 is an outer shell of the frame 2. The electronic component and the block that holds the electronic component are accommodated in the space surrounded by the peripheral wall 23. The first wall portion 23 a is a wall portion constituting one side in the cross-sectional shape of the peripheral wall 23. The side cover 4 constitutes a first wall portion 23 a together with the frame main body 3.

  As shown in FIG. 4, the frame main body 3 has a holding portion 31 for holding the side cover 4. The holding portion 31 is a slit-like notch formed on the side portion of the frame main body 3. The holding portion 31 extends along the axial direction AX from the upper end of the frame main body 3 to the lower end of the frame main body 3. The side cover 4 is inserted into the holding portion 31 from the upper side AX1 to the lower side AX2. At the lower end of the holding portion 31, a support wall 32 is provided. The support wall 32 locks the side cover 4 to support the side cover 4 from the lower side. The holding portion 31 has a hole 33. The holes 33 are respectively formed on two opposing wall surfaces of the holding portion 31. The hole 33 engages with the protrusion 42 b of the side cover 4 to lock the side cover 4.

  The perspective view which looked at the side cover 4 from the back surface side is shown by FIG. That is, FIG. 5 shows the side cover 4 as viewed from the inner space side of the frame 2. The side cover 4 has a main wall 41, a pair of side walls 42 and 42, a beam 43, a locking portion 44, a protruding portion 45, and a rotation restricting portion 46. The main wall portion 41, the pair of side wall portions 42, 42, the beam portion 43, the locking portion 44, the projecting portion 45, and the rotation restricting portion 46 are integrally molded.

  The main wall 41 is a flat plate-like component, and constitutes a part of the first wall 23 a. The side wall portion 42 protrudes from the inner side surface 41 a of the main wall portion 41 and extends along the axial direction AX. One side wall portion 42 of the pair of side wall portions 42 and 42 is disposed at one end in the width direction of the inner side surface 41 a. The other side wall portion 42 is disposed at the other end in the width direction of the inner side surface 41 a. The pair of side wall portions 42, 42 oppose each other in the width direction of the main wall portion 41.

  The side wall portion 42 has a piece portion 42 a and a protrusion 42 b. The piece portion 42a protrudes in a cantilever shape toward the upper side AX1 in the axial direction AX. The protrusion 42b protrudes from the outer surface of the piece 42a. The protrusion 42 b has a locked surface 42 c. The locked surface 42 c is locked from the upper side AX 1 by the hole 33 of the frame main body 3.

  The beam portion 43 is a beam-shaped component that connects the pair of side wall portions 42, 42. The beam portion 43 connects the tip end portions in the projecting direction of the pair of side wall portions 42 and 42. The locking portion 44 protrudes from the inner side surface 41 a in the same direction as the side wall portion 42 protrudes. The locking portion 44 has a locking surface 44a. The locking surface 44a is a surface facing the lower side AX2 of the axial direction AX. The locking surface 44 a is located on the upper side AX <b> 1 with respect to the beam portion 43. The locking surface 44a locks a terminal 7 described later.

  The rotation restricting portion 46 is formed in each of the pair of side wall portions 42, 42. The rotation restricting portion 46 protrudes from the upper end of the side wall portion 42 toward the opposite side to the main wall portion 41 side. The position of the rotation restricting portion 46 in the axial direction AX is a position between the beam portion 43 and the locking portion 44. The rotation restricting portion 46 has an opposing surface 46 a. The facing surface 46 a faces the other rotation restricting portion 46. The opposing surface 46 a of one rotation restricting portion 46 and the opposing surface 46 a of the other rotation restricting portion 46 oppose each other in the width direction of the main wall portion 41. The opposing surface 46 a is formed at a position opposed to the side surface of the distal end portion 72 (see FIG. 6) of the terminal 7 described later, and regulates the rotation of the distal end portion 72.

  The protrusion 45 protrudes from the lower end of the main wall portion 41 toward the lower side AX2 of the axial direction AX. The shape of the protrusion 45 of this embodiment is a rectangular plate. That is, the protrusion 45 is a rectangular piece projecting from the main wall 41 in the axial direction AX. The width Wd1 of the protrusion 45 is narrower than the width of the main wall portion 41. Further, the length L1 of the protrusion 45 is longer than the width Wd1 of the protrusion 45.

  As shown in FIG. 6, the side cover 4 holds the terminal 7 connected to the electric wire W. The terminal 7 of the present embodiment is an L-shaped terminal bent in an L-shape. The proximal end 71 of the terminal 7 is connected to the electric wire W. A hole 72 a is formed at the tip end portion 72 of the terminal 7. The tip end portion 72 of the terminal 7 is inserted into the gap between the beam portion 43 and the locking portion 44 from the main wall portion 41 side. The tip end portion 72 is supported by the beam portion 43 from the lower side AX2. The terminal 7 is locked from the upper side AX1 by the locking surface 44a of the locking portion 44. For example, a bolt disposed inside the electrical connection box 1 is inserted into the hole 72a. The terminal 7 is fastened to the bolt and electrically connected to the electronic component disposed inside the electrical connection box 1.

  The proximal end 71 of the terminal 7 is accommodated between the pair of side walls 42, 42. The electric wire W protrudes from the base end portion 71 toward the lower side AX2. The wire W extends along the protrusion 45. The terminal 7 of the present embodiment is electrically connected to the power supply of the vehicle, for example, an alternator or the like through the electric wire W.

  The protrusion 45 can function as, for example, a grip that is gripped by the operator along with the electric wire W. It is preferable that the value of the width Wd1 of the protrusion 45 be a value corresponding to the outer diameter of the wire W. For example, the value of the width Wd1 is slightly larger than the outer diameter of the wire W. By grasping the protrusion 45 together with the electric wire W, the worker can suppress the detachment of the terminal 7 from the side cover 4 and the positional deviation of the terminal 7 with respect to the side cover 4.

  The process of assembling the lower cover 6 to the frame 2 is shown in FIG. The frame 2 is, for example, mounted on the work bench with the protrusion 45 of the side cover 4 facing upward. That is, the frame 2 is placed on the work bench so that the opening 22 of the lower side AX2 faces upward. In the opening 22, the portion 22 a adjacent to the protrusion 45 is at a lower position than the tip 45 a of the protrusion 45. That is, the protrusion 45 protrudes upward more than the portion 22 a adjacent to the protrusion 45 in the opening 22. The lower cover 6 is assembled to the frame 2 as shown by the arrow Y1 in a posture in which the bottom wall portion 61 is directed upward.

  As shown in FIGS. 8 and 9, in a state in which the lower cover 6 is fitted to the frame 2, the protrusion 45 is exposed to the external space. In the following description, a state in which the frame 2 is fitted to the lower cover 6 is referred to as a "fitted state". The fitted state is also a state in which the locking portion 24 of the frame 2 and the locked portion 66 of the lower cover 6 are engaged. In the fitted state, the protrusion 45 faces the side wall 62 of the lower cover 6. In the following description, among the plurality of wall portions 62a constituting the side wall 62, the wall portion 62a facing the projecting portion 45 in the fitted state is referred to as "opposing wall portion 63". The protrusion 45 faces the outside surface 63 a of the facing wall 63 in the fitted state.

  Here, when the frame 2 and the lower cover 6 are assembled, there is a possibility that the projecting portion 45 may get into the inner space of the lower cover 6 as shown in FIG. If the worker of the assembling operation continues the assembling operation without noticing that the projecting portion 45 is in the lower cover 6, the projecting portion 45 may be deformed. In the following description, the fact that the frame 2 and the lower cover 6 are fitted while the projection 45 is in the inner space of the lower cover 6 is referred to as “mis-fitting”.

  The lower cover 6 of the present embodiment has an abutment surface 64 a that locks the projection 45 as described below. The abutment surface 64 a locks the projection 45 when the projection 45 is inward of the facing wall 63. Thereby, the electrical connection box 1 of this embodiment can suppress a misfitting beforehand.

  As shown in FIG. 9, FIG. 11, and FIG. 12 etc., a rib 64 is formed on the inner side surface 63b of the opposing wall 63. As shown in FIG. The rib 64 is a protrusion which protrudes from the inner side surface 63 b of the opposing wall portion 63. The ribs 64 extend along the axial direction AX. In other words, the ribs 64 extend along the fitting direction in which the frame 2 and the lower cover 6 fit. Two ribs 64 are formed on the facing wall portion 63 in the present embodiment. The two ribs 64 face each other in the width direction of the facing wall portion 63. The proximal end of the rib 64 is connected to the bottom wall 61.

  As shown in FIG. 9, the rib 64 has an abutment surface 64a. The contact surface 64 a of the present embodiment is a tip end surface of the rib 64. The contact surface 64 a is a surface facing the tip 63 c side of the opposing wall portion 63 in the rib 64. The tip 63 c is a tip in a direction in which it protrudes from the bottom wall 61 in the facing wall 63. As shown in FIG. 9, the position of the contact surface 64 a in the facing wall portion 63 is a position facing the projecting portion 45 in the fitted state. That is, the position of the contact surface 64 a is a position facing the protrusion 45 in the thickness direction of the facing wall portion 63 when the lower cover 6 and the frame 2 are properly fitted. The position of the contact surface 64 a in the present embodiment is a position between the side wall 62 and the tip 45 a of the protrusion 45 in the axial direction AX. The position of the contact surface 64 a is, for example, a position slightly closer to the tip 45 a than the intermediate position from the side wall 62 to the tip 45 a of the protrusion 45.

  The contact surface 64 a has an inclination toward the tip 63 c of the opposing wall 63 as it is separated from the inner surface 63 b of the opposing wall 63. The contact surface 64a is an inclined surface having an acute angle θ with the inner surface 63b. As shown in FIG. 12, in the axial direction AX, the position of the abutment surface 64a of one rib 64 and the position of the abutment surface 64a of the other rib 64 are the same. The distance G1 between the two ribs 64 is smaller than the width Wd1 of the protrusion 45. Therefore, the projection 45 is locked by the two ribs 64.

  When the frame 2 and the lower cover 6 are assembled, as shown in FIG. 12, when the protrusion 45 enters the inner space of the lower cover 6, the protrusion 45 abuts on the contact surface 64 a. The contact surface 64 a locks the tip 45 a of the protrusion 45. The abutment surface 64 a can notify the operator that the projection 45 has entered the inner space of the lower cover 6 by locking the projection 45. As a result, the occurrence of erroneous fitting is suppressed in advance.

  The contact surface 64a of the present embodiment is inclined as described above. Therefore, the contact surface 64a guides the tip 45a of the projection 45 to the inner surface 63b of the opposite wall 63, as shown by the arrow Y2 in FIG. That is, the contact surface 64 a suppresses the protrusion 45 from entering the lower cover 6 more than the rib 64. When the contact surface 64 a is not inclined, the protrusion 45 may be deformed as shown by a broken line and may enter the space inside the rib 64. On the other hand, the contact surface 64a of the present embodiment is inclined so as to face the inner side surface 63b, so that deformation of the protrusion 45 can be suppressed and the protrusion 45 can be locked. As a result, the electrical connection box 1 of the present embodiment can suppress the occurrence of misfitting.

  In addition, the electric connection box 1 of the present embodiment has a protection rib 65 for protecting the protrusion 45 in the fitted state, as described below with reference to FIGS. 15 and 16. The protection rib 65 is a protrusion that protrudes from the outer side surface 63 a of the facing wall portion 63. The protection rib 65 extends along the protrusion 45 in the fitted state. If the protective rib 65 is not provided, as shown in FIG. 14, the electric wire W1 or the like may enter between the projecting portion 45 and the outer side surface 63a, and the projecting portion 45 may be deformed. On the other hand, in the electrical connection box 1 of the present embodiment, the protective rib 65 surrounds the projecting portion 45, and the projecting portion 45 is accommodated in the space surrounded by the protective rib 65. The protection rib 65 suppresses the contact between the protrusion 45 and another article to protect the protrusion 45.

  As shown in FIGS. 15 and 16, the protection rib 65 has a pair of axial ribs 65a, 65a and a width rib 65b. The axial ribs 65a, 65a and the width rib 65b are integrally formed to have a U-shape. The axial ribs 65a, 65a extend along the axial direction AX. The axial ribs 65 a and 65 a face each other in the width direction of the facing wall portion 63. The width direction rib 65 b extends in the width direction of the facing wall portion 63. The widthwise ribs 65b connect the end portions of the axial ribs 65a, 65a.

  The axial ribs 65a, 65a extend in the axial direction AX including the base end 45b of the projection 45 to the tip 45a in the fitted state. The width direction rib 65b is located slightly lower than the tip end 45a of the protrusion 45 in the fitted state on the lower side AX2. The protruding heights of the axial ribs 65 a and 65 a and the protruding height of the width rib 65 b are at least larger than the thickness of the protruding portion 45. Therefore, the protrusion 45 is accommodated inside the space surrounded by the axial ribs 65a, 65a and the width rib 65b.

  As shown in FIG. 16, an inclined portion 65c is provided at the upper end portion of the axial rib 65a. The inclined portion 65c is an inclined surface inclined with respect to the axial direction AX. The inclined portions 65c are inclined away from each other as going to the upper side AX1 along the axial direction AX. Due to the provision of the inclined portion 65c, the protrusion 45 is guided between the axial ribs 65a, 65a. The protective rib 65 functions as a guide for guiding the protrusion 45 when the lower cover 6 is assembled to the frame 2. Moreover, the strength of the lower cover 6 is improved by providing the protective rib 65.

  As described above, the electric connection box 1 according to the present embodiment includes the frame 2 and the lower cover 6. The frame 2 has an opening 22. The lower cover 6 has a side wall 62 fitted with the frame 2 and closes the opening 22. The frame 2 has a protrusion 45. The protrusion 45 protrudes in the fitting direction with the lower cover 6, and faces the outer surface of the side wall 62 in a fitted state in which the frame 2 is fitted with the lower cover 6. In the present embodiment, the projecting portion 45 faces the outer side surface 63 a of the facing wall portion 63 in the fitted state.

  The lower cover 6 has a protrusion having an abutment surface 64a. The protrusion of the present embodiment is a rib 64 projecting from the inner side surface 63 b of the opposing wall portion 63. The rib 64 has an abutment surface 64 a facing the tip 63 c of the opposing wall 63. The position of the contact surface 64 a on the side wall 62 is a position facing the protrusion 45 in the fitted state. The contact surface 64 a has an inclination toward the tip 63 c of the opposing wall 63 as it is separated from the inner surface 63 b of the opposing wall 63.

  The contact surface 64 a of this embodiment can lock the projection 45 when the projection 45 accidentally enters the inner space of the lower cover 6. The contact surface 64a is inclined so as to be directed to the tip 63c side of the opposing wall 63 as it is separated from the inner side surface 63b. Therefore, the contact surface 64a can suppress deformation of the protrusion 45 locked by the contact surface 64a, and can prevent erroneous fitting in advance.

  The rib 64 of the present embodiment extends along the fitting direction. A plurality of ribs 64 opposed to each other in the width direction of the opposing wall 63 are disposed on the inner side surface 63 b of the opposing wall 63. The interval G1 of the plurality of ribs 64 in the width direction is narrower than the width Wd1 of the protrusion 45. Therefore, the rib 64 of the present embodiment can properly lock the protrusion 45.

  The lower cover 6 of the present embodiment has a protection rib 65 which protrudes from the outer side surface 63 a of the opposing wall 63 and extends along the protrusion 45 in the fitted state. The protective rib 65 protects the protrusion 45 by covering the gap between the protrusion 45 and the outer side surface 63 a.

  The protective ribs 65 of the present embodiment are disposed on both sides of the projecting portion 45 in the width direction of the facing wall portion 63. By arranging the axial ribs 65 a and 65 a on both sides of the protrusion 45, the protection of the protrusion 45 is appropriately made.

First Modification of Embodiment
A first modification of the embodiment will be described. FIG. 17 is a top view of a side cover according to a first modification of the embodiment, FIG. 18 is a perspective view of the side cover according to a first modification of the embodiment, and FIG. 19 is a first modification of the embodiment. It is a figure which shows the state which the side cover which hold | maintains the terminal. The side cover 4 according to the first modification of the embodiment differs from the side cover 4 of the above embodiment in that it has a holding rib 47 protruding from the rotation restricting portion 46.

  As shown in FIG. 17 and FIG. 18, the side cover 4 according to the first modification has a holding rib 47. The holding rib 47 is disposed in each of the pair of rotation restricting portions 46, 46. The holding ribs 47 are formed on the surfaces facing each other in the pair of rotation restricting portions 46 and 46, that is, the surfaces facing the side surfaces of the terminals 7. As shown in FIG. 18, the holding rib 47 extends along the axial direction AX. The shape of the holding rib 47 is a tapered shape whose width becomes narrower toward the tip in the projecting direction. The cross-sectional shape of the holding rib 47 is, for example, a triangle. A plurality of holding ribs 47 are provided for one rotation restricting portion 46.

  When the terminal 7 is attached to the side cover 4, the holding rib 47 is configured to be in contact with the terminal 7 so that the tip end portion is plastically deformed. As shown in FIG. 19, when the tip end portion 72 of the terminal 7 is inserted between the pair of rotation restricting portions 46 and 46, each holding rib 47 is crushed by the tip end portion 72. That is, the tip end portion 72 of the terminal 7 is pushed between the pair of rotation restricting portions 46 while plastic deformation of the holding rib 47 is performed. As a result, the tip end portion 72 is held by the plurality of holding ribs 47 from both sides in the width direction. The holding rib 47 regulates relative rotation of the terminal 7 with respect to the side cover 4 and swing of the terminal 7. Therefore, it is not necessary for the worker to hold both the electric wire W and the side cover 4, and the working efficiency of the assembling operation is improved.

Second Modification of Embodiment
A second modified example of the embodiment will be described. The protrusion 45 is not limited to one that is a part of the side cover 4. For example, in the above-mentioned embodiment, although frame 2 was constituted by two members of frame main part 3 and side cover 4, frame 2 is not limited to what is constituted by a plurality of members. The frame 2 may be one in which the entire peripheral wall 23 is integrally molded. In this case, the protrusion 45 may be provided on any part of the peripheral wall 23 and may protrude toward the lower cover 6.

  The frame 2 may have a plurality of protrusions 45. In this case, the contact surface 64 a or the protective rib 65 may be provided for each of the plurality of protrusions 45. The shape or position of the protrusion 45 is not limited to the illustrated shape or position. For example, the protrusion 45 may be part of a lock structure that connects the lower cover 6 and the frame 2.

  The cover having the contact surface 64 a and the protection rib 65 is not limited to the lower cover 6. For example, when the projecting portion 45 protrudes toward the upper side AX1, the upper cover 5 may be provided with a contact surface or a protection rib similar to the contact surface 64a or the protection rib 65.

  The contents disclosed in the above embodiments and modifications can be implemented in combination as appropriate.

DESCRIPTION OF SYMBOLS 1 electric connection box 2 frame 3 frame main body 4 side cover 5 upper cover 6 lower cover 7 terminal 21, 22 opening part 23 surrounding wall 23a 1st wall part 24, 25 latching part

Reference Signs List 31 holding portion 32 support wall 41 main wall portion 41a inner side surface 42 side wall portion 42a piece portion 42b protrusion 42c locking surface 43 beam portion 44 locking portion 44a locking surface 45 protruding portion 45a tip 45b base end portion 46 rotation restricting portion 47 Retaining rib 51 Locked portion 61 Bottom wall 62 Side wall 62a Wall 63 Opposing wall 63a Outer side 63b Inner side 63c Tip 64 Rib (protrusion)
64 a contact surface 65 protection rib 65 a axial rib 65 b width rib 65 c inclined portion 66 locked portion

Claims (4)

A frame having an opening,
A cover having a side wall fitted to the frame and closing the opening;
Equipped with
The frame has a protrusion which protrudes in a fitting direction with the cover, and has a protrusion facing the outer surface of the side wall in a fitting state in which the frame is fitted with the cover,
The cover has a projection which protrudes from the inner side surface of the side wall and has an abutting surface facing the tip side of the side wall,
The position of the contact surface on the side wall is a position facing the protrusion in the fitted state,
The electrical connection box according to claim 1, wherein the contact surface has a slope toward the leading end of the side wall as being away from the inner side surface of the side wall. The protrusion is a rib extending along the fitting direction,
A plurality of the ribs opposed to each other in the width direction of the side wall are disposed on the inner side surface of the side wall,
The electrical connection box according to claim 1, wherein an interval between the plurality of ribs in the width direction is narrower than a width of the protrusion. The electrical connection box according to claim 1, wherein the cover includes a protection rib that protrudes from an outer surface of the side wall and extends along the protrusion in the fitted state. The electrical connection box according to claim 3, wherein the protection rib is disposed on both sides of the protrusion in the width direction of the side wall.

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