JP2605741Y2 - Connection terminal fixing structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing large-capacity connection terminals (LA, BA terminals, etc.) for connecting connection wires to power supply devices such as vehicles and insulating members such as fuse boxes.

[0002]

2. Description of the Related Art Connecting a power supply wire to an insulating member such as a fuse box containing a fusible link (fusible material) for protecting an electric circuit of a vehicle or the like requires a high current (120 V).
A to 180A) flows, so bolting is generally used. FIG. 12 shows a conventional round plate terminal (LA terminal).
FIG. 4 is a perspective view showing an assembly structure of the fuse box of FIG.
On the upper surface portion 20 of the fuse box 2, the power supply side connection wire 1 is provided.
A flexible locking piece 12a for temporarily fixing the terminal 18 is formed. A screw hole is formed in the vicinity of the hole, and an insert nut 12b for bolting the terminal 18 is provided. Furthermore, the power supply wire 1 from the alternator
6 is provided with an insert bolt 14 for fixing the terminal 19. First, the power supply side connection wire 17 is inserted from below the box 2 and temporarily fixed with the flexible locking piece 12a.
Connect the terminal 19 of the power supply wire 16 to the insert bolt 14
Externally. Next, the bus bar 13 having a bolt through hole, which serves as a wiring board, is externally fitted to the insert bolt 14 so that the bolt through hole on the bus bar matches the screw hole in which the terminal 18 is temporarily fixed. Mounting bolt 15 from above
And the nut 14a is screwed in and fixed.

[0003]

FIG . 13 is an enlarged perspective view of the main part of FIG. LA terminal 18 bent at right angle
The connection wire 17 that is connected to the terminal is connected to the fuse box 2
, And temporarily fixed with the flexible locking pieces 12a, and the mounting bolts 15 are screwed in from above and fixed. But,
Such a temporary fixing is not sufficient because the locking state is insufficient.
Before screwing, the terminal 18 and the connection wire 17 are moved, and the screw hole of the insert nut 12b is displaced from the connection hole of the terminal 18, or the connection hole of the terminal 18 is detached and dropped due to vibration or impact. There remains a problem in improving workability. The electrical junction box proposed in Japanese Utility Model Laid-Open Publication No. 1-146444 has an effect on the above-mentioned problem, but increases the number of components such as U-shaped plates and bolts, leading to a significant cost increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connection terminal fixing structure in which, when a terminal connected to a terminal of a connection wire is bolted to an insulating member, the connection terminal is securely temporarily locked to improve workability. It is in.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to provide a fixing structure of a connection terminal for bolting a connection terminal connected to an end of an electric wire into an insertion hole of an insulating member. A pair of opposed locking projections for tightly engaging and locking on an insert nut embedded on the insulating member by being bent to a depth smaller than the thickness of the locking portion of the connection terminal in the insertion hole of the insulating member. This is achieved by the connection terminal fixing structure, wherein a large gap is formed and the separation length is provided so as to protrude so as to be smaller than the lateral width of the locking portion. Alternatively, in a connection terminal fixing structure in which a connection terminal connected to an electric wire terminal is bolted into an insertion hole or an outer surface of an insulating member, a locking projection having an inclined surface is provided near an insert nut on the insulating member. On the other hand, a locking hole for locking to the locking projection is provided in the fastening portion of the connection terminal, and the connection terminal is bent into a U-shape to open the terminal insertion hole in the U-shaped recess. This is achieved by the fixing structure of the connection terminal, characterized in that the end is sandwiched. Still further, in a fixing structure of a connection terminal for bolting a connection terminal connected to an electric wire terminal into an insertion hole of an insulating member, a lid portion that can be opened and closed by a hinge mechanism on one side of the insertion hole and has a lock mechanism. Forming a connection terminal, inserting the connection terminal from below the insertion hole, and then closing the lid, whereby the front end of the lid holds or locks the connection terminal. This is achieved by the fixing structure. The shape of the fastening portion and the bending angle of the connection terminal are determined by the shape of the insulating member, and the shape and installation position of the locking projection and the lid are determined by the shape of the connection terminal.

[0006]

In the connection terminal fixing structure having the above-described structure, the connection terminal bent in an L-shape or the connection terminal is bent into a U-shape with a locking projection formed in the insertion hole of the insulating member. The terminal end of the terminal insertion hole is sandwiched between the U-shaped concave portions, or a lid portion that can be opened and closed by a hinge mechanism and has a lock mechanism is formed on one side of the insertion hole, and the lid portion is closed. This allows the connection terminal to be tightly and locked on the insert nut embedded on the insulating member, and the connection terminal moves before the bolt is tightened, and the screw hole of the insert nut and the connection hole of the connection terminal are displaced. In addition, there is no possibility of detachment and falling off, and workability can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail. It goes without saying that the present invention is not limited to this embodiment. FIG. 1 is an enlarged perspective view of a main part showing a fixing structure of a connection terminal according to a first embodiment of the present invention. The structure on the fuse box 1 side, which is an insulating member, is provided with an insert nut 4 for bolt fastening embedded in the upper surface portion 10 of the fuse box 1, and provided near the insert nut 4.
And a terminal insertion hole 3 opened in the upper surface 10. On the inner wall of the terminal insertion hole 3, there is provided a pair of locking projections 6 having a gap larger than the thickness of the locking portion 8 b of the terminal 8. Further, the structure of the connection terminal 8 side is connected to the end of the connection wire 7 by a caulking portion 8c, and the front end portion is provided with a fastening bolt 5
A fastening portion 8a fixed by the fastening portion 8 and a bent portion of the fastening portion 8a formed by bending the
And a locking portion 8b inserted into the gap between the two. Side wall 9
The width of the locking portion 8b locked in a state where the locking protrusion 8b is substantially abutted is formed wider than the separation length of the locking protrusions 6 and 6 facing each other.

The terminal 8 is connected to the upper surface 10 of the fuse box 1.
In order to fix the terminal 8, the terminal 8 is inserted into the terminal insertion hole 3 from below the fuse box 1, and once pulled up above the upper surface 10 of the fuse box 1, the caulking portion 8 c of the connecting wire 7 is opposed to the terminal 8. When the locking portion 8b of the terminal 8 is inserted into the gap 3a between the side wall 9 and the locking protruding portion 6 and then lowered, the lower surface of the fastening portion 8a is inserted. Are positioned in close contact with the upper surface portion 10 of the fuse box 1. At this time, since the locking portion 8b is locked to the locking projection 6, the connecting wire 7 moves to insert nut 4
Screw hole 4a and the connection hole of terminal 8 are misaligned,
There is no fear of falling off due to vibration or impact.

FIG. 2 is a sectional view taken along line AA of FIG. The width t ₁ of the gap 3 a between the side wall 9 in the terminal insertion hole 3 of the fuse box 1 and the locking projection 6 is set to be equal to or slightly larger than the thickness t ₀ of the locking portion 8 b of the terminal 8. ing. If the length h ₁ from the upper surface portion 10 of the fuse box 1 until the locking protrusion 6 upper end is configured to be smaller than the length h ₀ between the clamping portion 8a lower surface and the locking portion 8b the lower end of the pin 8 pin 8 Can be locked.

FIG. 3 is a sectional view taken along line BB of FIG. The distance d ₁ between the opposing locking projections 6, 6 is the caulking portion 8 of the terminal 8.
c larger than the outer diameter d ₀ of also possible to lock the smaller if terminal 8 than the width d ₂ of the engaging portion 8b of the pin 8 in the gap portion 3a between the sidewalls 9 and the locking protrusion 6 is there.

FIG . 4 is a perspective view showing a second embodiment of the present invention. The upper surface of the fuse box 31 is provided with an insert nut 3 for bolt fastening embedded in the upper surface of the fuse box.
4 and a locking projection 36 provided near the insert nut and having a terminal insertion hole 33 opened on the upper surface of the box and an inclined surface 36a for locking the terminal. The connection terminal 38 has a U-shape. At the upper end of the U-shape, a connection hole through which the tightening bolt 5 penetrates and a locking hole 3 for temporary locking.
9 is a tightening portion 38a having a formation, neck portion of the terminal so as to form a gap width f ₁ is folded back substantially at right angles to the recess 38b of the U-shape.

FIG . 5 is a sectional view taken along the line CC of FIG. In order to fix the U-shaped terminal 38 on the upper surface of the fuse box 31, the connection terminal 38 is inserted from below the fuse box and is once pulled up from the terminal insertion hole 33 to the upper side of the box. The nut 34 is moved in a direction that matches the screw hole. Then, the tip of the connection terminal 38 is formed on the locking projection 36 formed on the upper surface of the box.
The locking hole 39 of the connection terminal 38 is locked by the locking protrusion 36 and temporarily fixed while moving on the inclined surface 36a.
At that time, the gap width f in the recess 38b of the U-shaped gap width f ₁
Terminal insertion holes 33 equal to ₁ or slightly thinner f ₀
By inserting the insert nut 34 into the end portion, it is possible to prevent the play of the insert nut 34 and the connection terminal 38. Therefore, the terminal can be easily and reliably fixed, and there is no fear that the connecting wire moves or comes off and falls off due to vibration or impact.

FIG . 6 shows a connection terminal 48 having a different structure used in the second embodiment . The difference from the connection terminal 38 is that the end face of the insertion hole on the upper surface of the fuse box is not a folded structure having a U-shape. The lower part of the U-shape to be clamped is part of both ends of the tip of the conductor caulking part, the upper part of the U-shape,
9 is formed by cutting and raising it so as to be parallel to the tightening portion 48a having the number 9. FIG. 7 shows a fuse box having a structure similar to that of the fuse box of the second embodiment . A part of the terminal insertion hole 43 is opened in the side surface of the fuse box 41, and connection terminals are inserted from the lateral side of the fuse box. The structure is such that the terminal side locking hole can be locked by the locking projection 46 while being held between the hole ends 43a. Therefore, there is no need to insert the fuse box from below, and workability can be improved.

FIG . 8 is a perspective view showing a third embodiment of the present invention. The upper surface of the fuse box 51 is provided with an insert nut 5 for bolt fastening embedded in the upper surface of the fuse box.
4, a terminal insertion hole 53 provided in the vicinity of the insert nut, opened on the upper surface of the box and having an inclined surface 51a, and one side of the terminal insertion hole 53 can be opened and closed by a hinge mechanism 56b, and the inclined surface is closed. 51a and a lid portion 56 having an inclined surface 56c which forms a gap between the lid portion 51a and the cover portion 56a. The connection terminal 58 has a fastening portion 58a having a connection hole through which the fastening bolt 5 penetrates, and a locking portion 58b constituted by an inclined surface having the same inclination angle as the inclined surface 51a on the box side.

FIG . 9 is a sectional view taken along the line DD of FIG. To fix the connection terminal 58 to the upper surface of the fuse box 51,
After inserting the connection terminal 58 from below the fuse box and pulling up the box once from the terminal insertion hole 53,
The connection hole of the tightening portion 58a of the connection terminal 58 is moved to a position where the screw hole of the insert nut 54 matches, and the lid 56 that can be opened and closed is then closed. Thereby, the locking portion 58b of the connection terminal 58 is sandwiched and temporarily fixed in a gap formed between the inclined surface 51a on the box side and the inclined surface 56c of the lid portion 56. At this time, locking grooves 56a, which are locking mechanisms formed on both side ends of the openable and closable lid portion 56 shown in FIG. 8 , are formed by protrusions 53a formed on the corresponding wall surfaces of the terminal insertion holes 53.
Therefore, the lid 56 securely holds the connection terminal 58. If the gap width t ₂ is too large compared to the terminal thickness t ₀ , rattling will occur. Therefore, it is preferable that the gap width t ₂ be equal to or slightly larger than the terminal thickness t ₀ . In the case of the present embodiment, the connection terminal 58 can be brought into close contact with the insert nut 54 simply by closing the lid portion 56, and the temporary fixing can be easily and reliably performed.

FIG . 10 is a perspective view showing a fourth embodiment of the present invention. The upper surface of the fuse box 61 is provided with an insert nut 64 embedded in the upper surface of the fuse box, a terminal insertion hole 63 provided near the insert nut, and opened on the upper surface of the box, and a hinge mechanism 66b provided on one side of the terminal insertion hole 63 at one side thereof. It can be opened and closed, and the terminal insertion hole 63 is closed.
And a lid 66 having a locking projection 66c fitted to the locking step 63b formed at the corresponding position of the above. Also,
The connection terminal 68 has a notch locking portion 69 formed at a bent portion opposing the tightening portion 68a having a connection hole through which the tightening bolt 5 passes and the locking step 63b on the box side.

FIG . 11 is a sectional view taken along line EE of FIG. In order to fix the connection terminal 68 to the upper surface of the fuse box 61, the connection terminal 68 is inserted from below the fuse box and is once pulled up from the terminal insertion hole 63 to the upper side of the box. The hole is moved to a position where the screw hole of the insert nut 64 coincides with the hole, and then the lid 66 that can be opened and closed is closed. Thereby, the connection terminal 6
The engaging projection 66c of the lid 66 is fitted into the notch engaging portion 69 of FIG. 8, and the connection terminal 68 is temporarily fixed. At this time, locking grooves 66a, which are locking mechanisms formed on both side ends of the openable and closable lid 66 shown in FIG. 10 , are locked by projections 63a formed on the corresponding wall surfaces of the terminal insertion holes 53, and The stopping projection 66c prevents the connection terminal 68 from moving in the vertical direction, and the front end surface 66d of the lid 66 sandwiches the vertical surface of the connection terminal 68 to prevent the movement in the horizontal direction. In this embodiment, the connection terminal 68 can be brought into close contact with the insert nut 64 simply by closing the lid 66 in the same manner as in the above-described embodiment, and the temporary fixing can be easily and securely performed.

The present invention can be applied not only to the fuse box shown in the above embodiment but also to fixing of a connecting wire for a power supply and fixing of a single-pole electric wire terminal. In addition, if the shape, dimensions, and arrangement position of the locking projections and the like that match the shape, dimensions, and location of the terminal are determined, the locking means is not limited to a specific terminal, but can be applied to existing single-pole electric wire terminals to be bolted. By adding, the fixing structure of the present invention can be applied.

[0019]

As described above, according to the connection terminal fixing structure of the present invention, the connection terminal can be easily and surely closely and tightly locked to the insert nut. There is no danger that the connection hole of the connection terminal and the connection hole of the connection terminal are displaced, or the connection terminal comes off due to vibration or impact, so that workability is improved and a highly reliable fixing structure can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fixing structure of a connection terminal according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a perspective view showing a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a connection terminal of another structure used in the second embodiment.

FIG. 7 is a perspective view showing a modification of the fuse box of the second embodiment.

FIG. 8 is a perspective view showing a third embodiment of the present invention.

FIG. 9 is a sectional view taken along the line DD of FIG. 8;

FIG. 10 is a perspective view showing a fourth embodiment of the present invention.

FIG. 11 is a sectional view taken along the line EE of FIG. 10;

FIG. 12 is a perspective view showing a conventional structure for mounting to a fuse box.

FIG. 13 is an enlarged perspective view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fuse box (1st Example) 3 Terminal insertion hole 3a Gap 4 Insert nut 4a Screw hole 5 Tightening bolt 6 Locking projection (1st example) 8 Connection terminal (1st example) 8a Tightening part 8b Locking portion 8c Caulking portion 9 Side wall 10 Upper surface portion 31 Fuse box (Second embodiment) 33 Terminal insertion hole 36 Locking projection 38 Connection terminal (Second embodiment) 39 Locking hole 41 Fuse box (Second embodiment) 43 Terminal insertion hole 48 Connection terminal (Modification of the second embodiment) 49 Locking hole 51 Fuse box (Third embodiment) 53 Terminal insertion hole 56 Cover 56a Locking groove 56b Hinge mechanism 56c Inclined surface 58 connection terminal (third embodiment) 61 fuse box (fourth embodiment) 63 terminal insertion hole 66 lid 66a locking groove 66b hinge mechanism 66c locking protrusion 68 connection terminal Fourth embodiment) 69 notched engaging portion d ₀ of the width f ₀ fuse box top surface of the spacing length d ₂ the locking portion of the outside diameter d ₁ locking protrusion of the caulking portion of the thickness f ₁ U-shaped terminal Gap width h ₀ Length of lower surface of tightening part and lower end of locking part h ₁ Length from upper surface to upper end of locking protrusion t ₀ Thickness of locking part t ₁ Width of gap t ₂ Gap width

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiyuki Katsumata 252 Kawashimada, Gotemba-shi, Shizuoka Prefecture Inside Yazaki Parts Co., Ltd. (56) References JP-A-53-41792 (JP, A) , U) Fully open sho 59-53783 (JP, U) Fully open hei 2-115269 (JP, U) Really open sho 63-116980 (JP, U) Really open sho 60-42284 (JP, U) Really open 62-120275 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 85/54 H01R 4/24-4/46

Claims (3)

(57) [Scope of request for utility model registration] 1. A fixing structure of a connection terminal, wherein a connection terminal connected to an electric wire terminal is bolted into an insertion hole of an insulating member, wherein the connection terminal is bent into an L-shape and embedded on the insulating member. A pair of opposing locking projections for tightly locking on the nut form a gap in the insertion hole of the insulating member that is larger than the thickness of the locking portion of the connection terminal, and the separation length is set to the distance. A connection terminal fixing structure, which is provided so as to protrude so as to be narrower than a lateral width of the locking portion. 2. A fixing structure of a connection terminal for bolting a connection terminal connected to a wire terminal into an insertion hole of an insulating member, wherein a locking projection having an inclined surface is provided near an insert nut on the insulating member. An engaging hole for engaging with the engaging protrusion is provided in a fastening portion of the connection terminal, and the connection terminal is bent into a U-shape to open an end of the terminal insertion hole in the U-shaped recess. A fixing structure of a connection terminal characterized by sandwiching a portion. 3. A connection terminal fixing structure in which a connection terminal connected to an electric wire terminal is bolted into an insertion hole of an insulating member, wherein a lid is provided on one side of the insertion hole, which can be opened and closed by a hinge mechanism and has a lock mechanism. Forming a connection portion, inserting the connection terminal from below the insertion hole, and then closing the lid portion, whereby the front end of the lid portion holds or locks the connection terminal. Terminal fixing structure.