JP2016181428A - Laminate fixing structure of earth terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To laminate and fix a plurality of earth terminals to one earth point.SOLUTION: The earth terminal to be interposed is fixed by using a bolt for layer lamination, having a screw shaft projected from a center of a rear surface of a head part for being screwed in a bolt hole, provided with a screw groove at the center of the front surface of the head part with which the screw shaft is screwed in, interposing the bolt for layer lamination between laminated earth terminals, screwing the screw shaft of a bolt projecting from a bolt hole of an earth terminal of a lower layer into the screw groove of a bolt for layer lamination of an upper layer.SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to a structure for fixing a ground terminal to be laminated, and more specifically, a plurality of ground terminals are vertically stacked and fixed at one location on a vehicle body. It is intended to enable centralized fixation.

  Conventionally, in order to overlap and fix a plurality of ground terminals in one place, the present applicant has provided a ground terminal 100 having a special shape shown in FIG. 5 in Japanese Patent No. 4433926. The ground terminal 100 is provided with a plate-like locking portion 103 and a pair of clamping pieces 104 on the outer peripheral edge of an annular electric contact portion 102 that is continuous with the electric wire connection portion 101. An anti-rotation portion 105 that is inserted into the locking hole 201 of the panel 200 is provided. The ground terminal 100 that overlaps the upper and lower positions the center bolt hole 106, and as shown in FIG. 5A, the bolt 110 is passed through the bolt hole 106 and screwed into the bolt hole 202 of the vehicle body panel 200 and fixed. ing.

  Japanese Patent Application Laid-Open No. 11-67305 and the like provide a combination terminal for stacking and fixing two ground terminals having a special shape.

Japanese Patent No. 4433926 JP 11-67305 A

  Both Patent Document 1 and Patent Document 2 have a special shape for stacking vertically, and are different from general-purpose ground terminals, so that the cost of the ground terminal is high. In addition, these specially-shaped ground terminals need to be laminated and assembled in advance, and there is a problem that work is required before being fixed to the vehicle body.

  Furthermore, in the ground terminal of Patent Document 1, the ground wire crimped to the ground terminal centering on the bolt fastening position spreads radially, and a large area is required for wire arrangement. Further, in the ground terminal of Patent Document 2, two wires are wired in parallel. In either case, there is a problem that the electric wires are arranged one above the other in order to eliminate the spread of the electric wires, and that it is not easy to wire in any direction depending on the position of the equipment to which the ground wire is connected.

  The present invention has been made in view of the above problems, and it is not necessary to use a special shape for the grounding terminal. A general-purpose grounding terminal can be used, and an arbitrary number of grounding terminals can be stacked vertically on the vehicle body panel. It is an object to be able to fasten and to easily wire an electric wire connected to a ground terminal in an arbitrary direction.

In order to solve the above-mentioned problem, the present invention is a laminate in which a screw shaft that is screwed into a bolt hole is projected from the center of the back surface of the head, and a screw groove into which the screw shaft is screwed is provided at the center of the head surface. Use the bolts for
The grounding terminal is interposed between the grounding terminals for laminating the bolts for lamination, and the screw shaft of the bolt protruding from the bolt hole of the lower grounding terminal is screwed into the screw groove of the bolt for laminating the upper layer. A grounding terminal fixing structure for fixing a ground terminal is provided.

The ground terminal is a commonly used ground terminal, and includes an electrical contact portion made of a circular, oval, or rectangular flat plate at the tip of a wire connection portion that crimps or crimps a barrel to an electric wire, and the center of the electrical contact portion Is a ground terminal with a circular bolt hole in the
The wire drawing direction of each ground terminal fixed between the upper and lower stacking bolts is set to an arbitrary wiring direction by rotating an electrical contact portion interposed between the stacking bolts at an arbitrary angle.

  A bolt that penetrates the bolt hole of the ground terminal and is fixed to a fixed body such as a vehicle body panel is used as the stacking bolt, and the stacking bolt is interposed between commonly used ground terminals, The grounding terminal to be interposed is fixed by passing the screw shaft of the bolt for bolting through the bolt hole of the grounding terminal and screwing it into the screw groove of the head of the upper layering bolt. By sequentially fastening the upper and lower stacking bolts between the ground terminals that are stacked one above the other, it is possible to stack the required number of ground terminals.

  As described above, the electric wire pulling direction of each ground terminal fixed between the upper and lower lamination bolts is arbitrary if the electrical contact portion interposed between the lamination bolts is rotated at an arbitrary angle. Direction. Therefore, the wires connected to the ground terminals to be stacked vertically can also be stacked vertically to minimize the wire wiring area, and the wires are directed in an appropriate direction according to the arrangement position of the equipment to which the ground terminals are connected via the wires. Can be wired.

When a plurality of ground terminals are laminated and fixed to one ground point of a vehicle body panel in which a bolt hole is drilled, the bolt is first fixed in advance to the periphery on the back side of the bolt hole of the vehicle body panel, and the screw shaft of the bolt Through the bolt hole with
The ground terminal to be the lowest layer is placed on the vehicle body panel, and protrudes through the screw shaft of the fixed bolt into the bolt hole of the ground terminal,
The head of the stacking bolt is placed on the upper surface of the electrical contact portion of the ground terminal as the lowermost layer, and the screw shaft is disposed with the screw shaft facing upward, and the screw of the bolt protruding from the vehicle body panel in the screw groove of the head Screw the shaft and fix the ground terminal on the bottom layer,
This is repeated sequentially, and the electrical contact portions of an arbitrary number of ground terminals are fixed in a state of being interposed between the heads of the lamination bolts.

  The bolt that is fixed in advance to the rear surface of the periphery of the bolt hole of the vehicle body panel may be a normal bolt that has no screw groove on the head, or the lamination bolt that has a screw groove on the head.

As described above, in the laminated fixing structure of the ground terminal according to the present invention, the bolt that passes through the bolt hole of the ground terminal and is fixed to the fixed body such as the vehicle body panel, and the laminated bolt that is provided with a screw groove on the head The laminated bolts are interposed between commonly used ground terminals, the screw shafts of the lower laminated bolts are passed through the bolt holes of the ground terminals, and the screw grooves on the heads of the upper laminated bolts The grounding terminal to be interposed is fixed by screwing it in. By sequentially fastening the upper and lower stacking bolts between the ground terminals that are stacked one above the other, it is possible to stack the required number of ground terminals.
And the direction of drawing out the electric wire of each grounding terminal that is interposed and fixed between the upper and lower lamination bolts is arbitrary if the electrical contact portion interposed between the lamination bolts is rotated at an arbitrary angle. can do. Therefore, the wires connected to the ground terminals to be stacked vertically can also be stacked vertically to minimize the wire wiring area, and the wires are directed in an appropriate direction according to the arrangement position of the equipment to which the ground terminals are connected via the wires. Can be wired.

1A and 1B show a structure for fixing a ground terminal according to an embodiment of the present invention, in which FIG. 1A is a partially sectional front view, FIG. 1B is a perspective view of a plurality of electric wires arranged at the same position, and FIG. It is a top view of the state which distributedly arranged. The ground terminal is shown, (A) is a perspective view, (B) is a front view in a state where it is crimped to an electric wire, and (C) is a plan view in a state where it is crimped to an electric wire. The bolts for lamination are shown, (A) is a perspective view seen from the screw shaft side, (B) is a perspective view seen from the head side, and (C) is a sectional view. (A)-(C) are sectional drawings which show the lamination | stacking fixing method to a vehicle body panel. (A) (B) is a perspective view which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a configuration in which the three ground terminals 1 (1A to 1C) of the present embodiment are laminated and fixed to one ground point AP provided with the bolt holes 3 of the vehicle body panel 2. FIG.

  The three ground terminals 1 are general-purpose ground terminals shown in FIG. The ground terminal is formed by integrally forming the electric wire connecting portion 10 and the electric contact portion 11 by punching a conductive metal plate such as copper and then bending it. The wire connection part 10 has insulation coating barrels 12a and 12b projecting on both sides in the width direction on the front end side of the rectangular flat board part 10a, and core wire barrels 13a and 13b are provided at intervals. The electrical contact portion is circular and has a circular bolt hole 14 in the center.

  The core wire 20b exposed by peeling off the insulation coating 20a at the end of the electric wire 20 is placed on the substrate portion 10a of the electric wire connection portion 10 of the ground terminal 1, and the core wire 20b is crimped by the core wire barrels 13a and 13b. The ground terminal 1 is crimped and connected to the electric wire 20 by crimping and crimping the insulation coating 20a with the insulation coating barrels 12a and 12b.

As shown in FIG. 2, the ground terminal 1 is a general-purpose product not having a special shape, and is provided with a lamination bolt 30 shown in FIG.
The bolt 30 for lamination is the same as the general-purpose bolt 40 in that the screw shaft 32 protrudes from the back surface 31 a of the head 31, but the screw groove 33 is recessed in the center of the surface 31 b of the head 31. doing. The screw groove 33 has an inner diameter into which the screw shaft 32 of the bolt 30 having the same shape can be screwed, and has a shape in which a female screw that is screwed into a male screw on the outer peripheral surface of the screw shaft 32 is provided on the inner peripheral surface.

Three general-purpose ground terminals 1 (1A to 1C) are laminated and fixed to one ground point AP of the vehicle body panel 2 by the method shown in FIG.
First, as shown in FIG. 4 (A), a general purpose bolt 40 is disposed on the back surface of the periphery of the bolt hole 3 provided in the vehicle body panel 2, and the head 40a is disposed on the back surface side of the vehicle body panel 2, and the screw shaft 40b is mounted. Project through the bolt hole 3 upward. The head 40a of the bolt 40 may be fixed to the back side of the bolt hole 3 in advance.

Next, as shown in FIG. 4B, the bolt hole 14 of the ground terminal 1A disposed in the lower layer is passed through the screw shaft 40b and placed on the upper surface of the vehicle body panel 2. In this state, the screw shaft 40b protrudes upward through the bolt hole 14.
In this state, the head 31 of the stacking bolt 30A is placed on the upper surface of the electrical contact portion 11 of the ground terminal 1A, and the screw shaft 32 protrudes upward. The screw groove 33 of the head 31 is screwed onto the screw shaft 40b and tightened. As a result, the ground terminal 1A is fastened and fixed on the vehicle body panel 2 by the stacking bolt 30A.

Next, as shown in FIG. 4C, the electrical contact portion 11 of the ground terminal 1B arranged in the middle layer is placed on the head 31 of the bolt 30A, the screw shaft 32 is passed through the bolt hole 14, and the screw shaft 32 is grounded. Project from 1B.
Next, the screw shaft 32 of the bolt 30A is screwed into the screw groove 33 of the head portion 31 of the middle layer stacking bolt 30B, and the ground terminal 1B is fastened and fixed.

Next, as shown in FIG. 1, the electrical contact portion 11 of the upper ground terminal 1C is placed on the head 31 of the bolt 30B, and the screw shaft 32 protrudes from the ground terminal 1C.
Next, the screw shaft 32 of the bolt 30B is screwed into the screw groove 33 of the head 31 of the stacking bolt 30C arranged in the upper layer, and the ground terminal 1C is fastened and fixed.

By the above method, three general-purpose ground terminals 1A to 1C are laminated and fixed to one earth point AP by using bolts 40 and lamination bolts 30A to 30C.
Even when four or more ground terminals are stacked on one ground point, the stacking bolts 30 can be interposed and fixed in the same manner as described above.

  Moreover, the wiring direction of the electric wires 20A to 20C connected to the three ground terminals 1A to 1C can be set to an arbitrary wiring angle by adjusting the angle of the ground terminals 1A to 1C passed through the screw shaft 32. Therefore, as shown in FIG. 1 (B), the wires 20A, 20B, and 20C can be arranged radially at an angle as shown in FIG. 1 (C). .

  The present invention is not limited to the above-described embodiment, and a bolt for passing a screw shaft through the bolt hole 3 of the vehicle body panel 2 may be replaced with the general-purpose bolt 40, and a bolt 3 for lamination may be used.

DESCRIPTION OF SYMBOLS 1 (1A-1C) Ground terminal 2 Body panel 3 Bolt hole 10 Electric wire connection part 11 Electrical contact part 14 Bolt hole 20 (20A-20C) Electric wire 30 (30A-30C) Lamination bolt 31 Head 32 Screw shaft 33 Screw groove

Claims (2)

Using a bolt for stacking that has a screw shaft protruding from the center of the back surface of the head and a screw groove into which the screw shaft is screwed in the center of the surface of the head,
The grounding terminal is interposed between the grounding terminals for laminating the bolts for lamination, and the screw shaft of the bolt protruding from the bolt hole of the lower grounding terminal is screwed into the screw groove of the bolt for laminating the upper layer. Laminated fixing structure of earth terminal that fixes The ground terminal is a commonly used ground terminal, and includes an electrical contact portion made of a circular, oval, or rectangular flat plate at the tip of a wire connection portion that crimps or crimps a barrel to an electric wire, and the center of the electrical contact portion Is a ground terminal with a circular bolt hole in the
The wire drawing direction of each ground terminal that is interposed and fixed between the upper and lower lamination bolts is an arbitrary wiring direction by rotating an electrical contact portion interposed between the lamination bolts at an arbitrary angle. 2. A laminated fixing structure of the ground terminal according to 1.

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