JP2017041398A - Lamination and fixture structure for bolt fastening terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To laminate and fix a plurality of ground terminals at one ground point.SOLUTION: A lamination and fixture structure comprises: a bolt fastening terminal including a bolt hole in an electric contact part continued to a wire connection part; and a stud bolt inserted into the communicated bolt holes of a plurality of bolt fastening terminals to be laminated. In the bolt fastening terminal, one detent projection is provided protrusively from an inner peripheral surface of the bolt hole, and all positions of the projections of the plurality of bolt fastening terminals to be laminated in a circumferential direction are made different.On the other hand, in a shank of the stud bolt, one fitting groove into which the projection is inserted is provided continuously in an axial direction. When the projections of the bolt fastening terminals are inserted into the fitting groove, a position of an outer peripheral surface of the stud bolt in the circumferential direction is made different by the wire connection parts of the bolt fastening terminals.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laminated fixing structure of bolt fastening terminals, and more specifically, a bolt fastening terminal that is widely used as a ground terminal is vertically stacked in one place, and is fastened to a vehicle body or the like using a bolt and collectively grounded. In particular, it is possible to prevent rotation by using only the bolted terminals and bolts to be stacked without using other rotation preventing members, thereby reducing the number of parts and simplifying the terminal connection work.

  Conventionally, a non-rotating structure for a connection terminal shown in FIG. 7 is provided in Japanese Patent Application Laid-Open No. 2002-50417 in order to overlap and fix a plurality of bolt fastening terminals used as ground terminals in one place. In this structure, a plurality of bolt fastening terminals 100A and 100B are stacked 180 degrees out of phase, and the anti-rotation body 110 is stacked on the upper surface, and the anti-rotation pin 120 protruding from the anti-rotation body 110 is connected to the bolt fastening terminals 100A and 100B It is positioned and held in contact with both side surfaces, and is fitted and locked in a fitting recess 122 provided in the fixing member 125. A bolt 150 passed from above through the bolt holes of the bolt fastening terminals 100A and 100B to be stacked is screwed into the mounting boss 124 provided with a screw hole 124h projecting from the fixing member 125, and the bolt fastening terminal 100A is placed on the mounting boss 124. And 100B are laminated and fixed without overlapping the wires.

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

JP 2002-50417 A JP 11-67305 A

  In the laminated structure of the bolt fastening terminals of Patent Document 1, in addition to the terminals and bolts, a plurality of anti-rotation bodies, a plurality of anti-rotation pins having different lengths, and a plurality of anti-rotation pins that are fitted and locked respectively. It is necessary to provide the fixing material which projected the fitting recessed part and the attachment boss | hub. Thus, separate parts other than the terminal and the bolt are required. When the fixing material is a vehicle body panel, it is necessary to provide a fitting recess in the vehicle body panel, and it is necessary to project a mounting boss provided with a screw hole from the vehicle body panel, which increases the number of processing on the vehicle body panel side. is there. Furthermore, the lamination direction of the bolt fastening terminal of the electric wire terminal is limited by the position of the detent pin, and the direction of the electric wire connected to the bolt fastening terminal is restricted to the opposite direction or the perpendicular direction.

  Moreover, in the combination terminal of patent document 2, while the bolting terminal used as a grounding terminal fixed by lamination is limited to two, the wiring direction of the electric wires connected to these two bolting terminals is also set to a predetermined angle such as parallel. There are limited issues.

  The present invention has been made in view of the above-described problem, and does not require other parts other than a bolt fastening terminal and a bolt used as a ground terminal, and can simplify the work of stacking and fixing the bolt fastening terminals. It is an object of the present invention to provide a laminated fixing structure of bolt fastening terminals.

In order to solve the above-described problem, the present invention inserts a bolt fastening terminal having a bolt hole in an electrical contact portion continuous with an electric wire connection portion and a plurality of bolt fastening terminals that are stacked to communicate with each other. With stud bolts,
While the bolt fastening terminal protrudes one rotation-preventing projection from the inner peripheral surface of the bolt hole, the circumferential positions of the projections of the plurality of bolt fastening terminals to be stacked are all different,
One fitting groove into which the projection is inserted in the shaft portion of the stud bolt is provided continuously in the axial direction,
When the projections of the bolt fastening terminals are inserted into the fitting grooves, the wire connecting portions of the bolt fastening terminals are attached to the outer peripheral surface of the stud bolt with different circumferential positions. It provides a laminated fixing structure of fastening terminals.

  The bolt fastening terminal includes the electric contact portion continuously to the electric wire connecting portion that is crimped, welded or pressed against the electric wire, and the anti-rotation protrusion protruding from the inner peripheral surface of the bolt hole of the electric contact portion is A convex portion having an arbitrary shape such as a triangle, a quadrangle, or a semicircle projecting toward the center of the bolt hole, and the projecting position of the projection is a position where the wire connection portions of the bolt fastening terminals to be stacked do not overlap. It is different.

The phase angle in the circumferential direction of the protrusion provided on the bolted terminals to be laminated is, for example, about 30 to 45 degrees.
Thus, if the position which fixes a bolt fastening terminal with respect to a stud bolt is changed, it can prevent that the electric wire connection part of a bolt fastening terminal overlaps, and it can prevent a seating defect, contact failure, and bolt loosening at the time of bolt fastening. .
Also, depending on the wiring direction of the wire to the stacking fixing position, the projection of the bolted terminal can be fitted into the fitting groove of the stud bolt at an appropriate angle, and wiring can be performed smoothly without generating an excessive load on the wire. it can.

  One rotation-preventing protrusion provided on each bolt fastening terminal and the fitting groove provided on the stud bolt are made asymmetrical to prevent wrong assembly of the front and back of the bolt fastening terminal fitted in the stud bolt fitting groove. It is good also as a structure.

The bolt terminal is used as a ground terminal to be connected to a terminal of a ground wire that is wired to the vehicle, and the head of the stud bolt inserted into the bolt hole of the ground terminal is welded to the ground point of the vehicle body panel so that the shaft portion faces upward. Project to
It is preferable that a nut is fastened to the shaft portion after a projection provided in a bolt hole of the ground terminal is fitted and passed through a fitting groove provided in the shaft portion of the stud bolt.

  As described above, in the present invention, the bolt fastening terminal used as the ground terminal makes the position of one rotation-preventing projection protruding from the inner peripheral surface of the bolt hole different for each bolt fastening terminal to be laminated, One stud groove is provided along the axial direction for fitting the projection to the stud bolt for fastening and fixing the plurality of bolt fastening terminals. Thus, the assembly position of the bolt fastening terminal with respect to the stud bolt can be changed without using any other member by slightly changing the shape of the bolt fastening terminal and the shape of the stud bolt. As a result, it is possible to prevent the wire connection portions of the bolt fastening terminals from overlapping, and to prevent occurrence of poor seating, poor contact, and loosening of the bolts when fastening the bolts. In addition, no other member is required to position and hold the bolt fastening terminal, and the parts cost and the number of work can be reduced.

It is a disassembled perspective view of the earth terminal which consists of a bolt fastening terminal of an embodiment of the present invention, a stud bolt, and a nut. The ground terminal is shown, (A) is a perspective view, (B) is a front view in a state of being crimped to an electric wire, and (C) is a plan view in a state of being crimped to an electric wire. It is a top view which shows the difference of the several bolt fastening terminal laminated | stacked. (A) is a top view which shows the state which attached the several earthing terminal to the volt | bolt, (B) is sectional drawing before fixing an earthing terminal with a volt | bolt, (C) is sectional drawing of the state fixed. FIG. 2A is a sectional view of a bolt, FIG. 2B is a plan view of a main part of a ground terminal, and FIG. 4C is a plan view of a state in which the ground terminal is attached to the bolt. A third embodiment is shown, (A) is a sectional view of a bolt, (B) is a plan view of a main part of a ground terminal, (C) is a drawing showing a normal use state, and (D) is a drawing showing an incorrect use state. It is. It 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 first embodiment.
In the first embodiment, after the bolt holes of the three ground terminals 1 (1A to 1C) composed of bolt fastening terminals are passed through the shaft portion of the stud bolt 2 welded to the ground point of the vehicle body panel 12 as shown in FIG. The nut 3 is fastened and fixed.

The three ground terminals 1 have the configuration shown in FIG. 2, and the point that one rotation-preventing projection 15 projects from the inner peripheral surface of the bolt hole 14 provided in the electrical contact portion 11 is a widely used grounding terminal. Different from the terminal.
The ground terminal 1 is formed by punching a conductive metal plate such as copper and bending it to continuously form the electric wire connecting portion 10 and the electric contact portion 11. The electric wire connecting portion 10 has insulation coating barrels 12a and 12b projecting on both sides in the width direction on the rear end side of the rectangular flat plate substrate portion 10a, and core wire barrels 13a and 13b projecting at intervals. The electrical contact portion 11 is circular and is provided with the circular bolt hole 14 in the center.

One anti-rotation projection 15 is provided in the horizontal direction from the inner periphery of the bolt hole 14 toward the center of the hole. In this embodiment, the projection 15 is triangular. As shown in FIG. 3, the three ground terminals 1 </ b> A to 1 </ b> C have different circumferential positions where the protrusions 15 are provided. A protrusion 15B of the ground terminal 1B is provided on a center line L1 that connects the center point P of the bolt hole 14 and the center in the width direction of the wire connection portion 10, and θ1 (30 degrees) clockwise from the stop line L1 to the ground terminal 1A. The projection 15A is provided at the position of 15 and the ground terminal 1C is provided with the projection 15C at a position of θ2 (30 degrees) counterclockwise from the center line L1.
The circumferential direction angle at which the protrusions 15A to 15C are made different is not limited to 30 degrees, and is an angle at which the wire connection portion 10 to be crimped to the wire 20 does not overlap.

  For the connection between the ground terminal 1 and the electric wire 20 serving as the ground wire, the core wire 20b exposed by peeling off the insulation coating 20a of the end of the electric wire 20 is placed on the substrate portion 10a of the electric wire connecting portion 10 and the core wire is placed. 20b is crimped and crimped by the core wire barrels 13a and 13b, the insulation coating 20a is crimped and crimped by the insulation coating barrels 12a and 12b, and the ground terminal 1 is crimped and connected to the electric wire 20.

The stud bolt 2 that passes through the bolt holes 14 of the ground terminals 1A to 1C has one fitting groove 5 into which the projection 15 is inserted into a shaft portion 2a in which annular crests 2y and troughs 2t are alternately provided. Are continuously provided in the axial direction, and a head portion 2b is provided at one end of the shaft portion 2a. The fitting groove 5 is a recess having a V-shaped cross section into which the V-shaped projection 15 is fitted.
The head 2b of the stud bolt 2 is fixed to the ground point on the surface of the vehicle body panel 12 with the head 2b as the lower end, and the shaft portion 2a projects upward. The nut 3 is fitted to the tip 2e which is the upper end of the shaft portion 2a from above, and the inner peripheral surface of the nut 3 is fitted to the peak portion 2y and the valley portion 2t provided on the outer peripheral surface of the shaft portion 2a of the stud bolt 2. The fastening part 3a which consists of a mountain valley is provided.

  When the projections 15 (15A to 15C) of the ground terminals 1 (1A to 1C) are inserted into the fitting grooves 5 of the stud bolt 2, the ground terminals 1 are attached to the outer peripheral surface of the stud bolt 2 with a phase angle of 30 degrees. .

  The three ground terminals 1 (1A to 1C) are fastened to a stud bolt 2 projecting from one ground point of the vehicle body panel 12 and fixedly stacked as shown in FIG.

  As described above, one rotation-preventing protrusion 15 is provided on the inner peripheral surface of the bolt hole 14 of the bolt fastening terminal used as the ground terminal 1, and the circumferential direction of the protrusions 15A to 15C provided on the ground terminals 1A to 1C to be laminated When the projections 15A to 15C are fitted into the fitting grooves 5 provided in the stud bolt 2 to be inserted into the bolt hole 14 by changing the position, the ground terminals 1A to 1C to be stacked are radially expanded without overlapping. . Therefore, when the three ground terminals 1 are inserted into the shaft portion 2a of the stud bolt 2 without being rotated and then inserted into the nut 3 and fastened, the electrical contact portion 11 of the bottommost ground terminal 1A is connected to the stud bolt. 2, the middle ground terminal 1 </ b> B and the upper ground terminal 1 </ b> C are in contact with the adjacent lower ground terminals 1 </ b> A and 1 </ b> B. Since the head 2b of the stud bolt 2 comes into contact with the metal vehicle body panel 12 and conducts, the ground terminals 1A, 1B, and 1C that sequentially come into contact with the head 2 conduct with the vehicle body panel 12 to improve electrical connection reliability. Can be increased. And since the electric wire connection part 10 of earthing terminals 1A-1C does not mutually overlap, the loosening of stud bolt 2 and the occurrence of damage to earthing terminal 1 can be prevented.

FIG. 5 shows a second embodiment.
In the second embodiment, the fitting groove 5-B provided in the stud bolt 2-B has a semicircular shape, and one side of the shaft portion 2a is cut out along the axial direction.
On the other hand, the bolt hole 14 of the ground terminal 1D shown in FIG. 5B is provided with a semicircular projection 15D that is just fitted into the fitting groove 5-B. A semi-circular protrusion 15E is projected from a position different in the circumferential direction of the bolt hole 14 on the ground terminal 1E stacked on the ground terminal 1D.
When the projections 15D and 15E of the ground terminals 1D and 1E are fitted and assembled in the fitting groove 5-B of the stud bolt 2-B, as shown in FIG. 5C, the wire connection portion of the ground terminals 1D and 1E 10 is set not to overlap.
Since other configurations and usage methods are the same as those in the first embodiment, the description thereof is omitted.

FIG. 6 shows a third embodiment.
In the third embodiment, the fitting groove 5-C provided in the stud bolt 2-C shown in FIG. 6 (A) has a left-right asymmetric shape by providing an inclined notch at one corner of the quadrangle. The anti-rotation protrusion 15F protruding from the inner periphery of the bolt hole 14 of the ground terminal 1F to be fitted in the fitting groove 5-C has a left-right asymmetric shape as shown in FIG.

Thus, if it is left-right asymmetric, as shown in FIG.6 (C), if the earth terminal 1F is made into the upper surface side, it can be made to fit in the fitting groove 5-C of the stud bolt 2-C. On the other hand, as shown in FIG. 6 (D), when the ground terminal 1F is on the back side facing downward, the projection 15F cannot be fitted into the fitting groove 5-C of the stud bolt 2-C, and the ground terminal 1F It can prevent attaching the front and back to the stud bolt 2-C by mistake.
Since other configurations and methods of use are the same as those in the first embodiment, description thereof is omitted.

  The present invention is not limited to the above-described embodiment, and the bolt fastening terminal and the electric wire used as the ground terminal may be connected by welding, or may be connected by press contact with a press contact blade, in addition to crimping by the barrel.

1 (1A to 1C) Ground terminal (bolt terminal)
2 Stud bolt 3 Nut 5 Fitting groove
DESCRIPTION OF SYMBOLS 10 Electric wire connection part 11 Electrical contact part 14 Bolt hole 15 Anti-rotation protrusion 20 Electric wire

Claims (3)

A bolt fastening terminal provided with a bolt hole in an electrical contact portion continuing to the electric wire connecting portion; and a stud bolt for inserting the bolt hole connected to the plurality of laminated bolt fastening terminals. While projecting one rotation-preventing projection from the inner peripheral surface of the bolt hole and making all the circumferential positions of the projections of the plurality of bolt fastening terminals to be stacked different,
One fitting groove into which the projection is inserted in the shaft portion of the stud bolt is provided continuously in the axial direction,
When the projections of the bolt fastening terminals are inserted into the fitting grooves, the wire connecting portions of the bolt fastening terminals are attached to the outer peripheral surface of the stud bolt with different circumferential positions. Laminated fixing structure for fastening terminals.   The bolt fastening terminal includes the electric contact portion continuously to the electric wire connecting portion that is crimped, welded or pressed against the electric wire, and the anti-rotation protrusion protruding from the inner peripheral surface of the bolt hole of the electric contact portion is A convex portion having an arbitrary shape such as a triangle, a quadrangle, or a semicircle projecting toward the center of the bolt hole, and the projecting position of the projection is a position where the wire connection portions of the bolt fastening terminals to be stacked do not overlap. The laminated fixing structure of the bolt fastening terminal according to claim 1, wherein the bolt fastening terminals are different from each other. The bolt terminal is used as a ground terminal to be connected to a terminal of a ground wire that is wired to the vehicle, and the head of the stud bolt for inserting the bolt hole of the ground terminal is welded to the ground point of the vehicle body panel so that the shaft portion faces upward Project to
3. The nut according to claim 1, wherein a nut is fastened to the shaft portion after a projection provided in the bolt hole of the ground terminal is fitted and passed through a fitting groove provided in the shaft portion of the stud bolt. Laminated fixing structure for bolted terminals.

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