JP3449332B2 - Assembly structure of terminal fittings - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal metal fitting assembly structure.

[0002]

2. Description of the Related Art For example, when connecting a plurality of grounding electric wires of an automobile wire harness to a grounding stud bolt provided on a vehicle body, the terminal fittings fixed to the end of each grounding electric wire are individually studd. By attaching a plurality of terminal fittings to each other in advance instead of attaching them to bolts, it is possible to improve the work efficiency by completing the work of attaching to the stud bolts once in the field.
As an assembling structure for assembling a plurality of terminal fittings in this way, there is conventionally one disclosed in Japanese Patent Laid-Open No. 7-263059.

This is because a plurality of terminal fittings of the same shape having a front surface engaging portion and a rear surface engaging portion are laminated, and between two overlapping terminal metal fittings, the terminal metal fittings located on the front side of the terminal metal fittings are stacked. By connecting the back side locking part to the terminal fittings located on the back side and the front side locking part of the terminal fittings located on the back side to the terminal fittings located on the front side, both terminal fittings are connected. With this connection structure, a plurality of terminal fittings are sequentially connected.

[0004]

By the way, in this type of terminal fitting, it is sometimes desired to provide a means for preventing rotation with respect to the vehicle body. A structure is conceivable in which a protruding piece is formed only on one sheet of terminal metal fitting and the protruding piece is locked to the vehicle body.
It is desirable that the terminal fittings with the protrusions be placed at the position closest to the vehicle body (for example, the lowest step) when stacked, but when actually assembling the terminal fittings. However, there is a risk that the stacking order may be wrong and the terminal fittings on which the protrusions are formed may not be arranged in a predetermined step.

The present invention was devised in view of the above circumstances, and it is an object of the present invention to reliably arrange a specific terminal metal fitting among a plurality of laminated terminal metal fittings in a predetermined step.

[0006]

According to a first aspect of the present invention, a plurality of common terminal fittings having the same shape are laminated on the surface of a specific terminal fitting having a specific function part, and two of the terminal fittings having the front and back sides overlapping each other are stacked. Between the front side, the back side connecting part of the terminal fitting is locked to the back side terminal fitting, and the back side terminal fitting is locked to the front side terminal fitting. Thus, in the terminal metal fitting assembly structure for connecting both of the terminal metal fittings to each other, the common terminal metal fitting is formed with both the front surface connecting portion and the back surface connecting portion. Meanwhile,
Only the front surface connection portion of the front surface connection portion and the back surface connection portion is formed on the specific terminal fitting.

According to a second aspect of the present invention, in the first aspect of the invention, between the two terminal fittings that are overlapped on the front and back sides, the back surface connecting portion of the terminal fitting located on the front side and the terminal fitting located on the back side are connected. The structure is such that the surface connecting portion is engaged.

[0008]

[Advantageous Effects of the Invention] [Invention of claim 1] Even if the common terminal metal fitting is attached to the specific terminal metal fitting on the back surface side opposite to the original stacking surface, the specific terminal metal fitting has a rear surface connecting portion. Since neither is provided, both terminal fittings are not connected. As a result, incorrect assembly can be prevented, and the specific terminal fitting can be reliably arranged in a predetermined layer of the stacked layers.

[Invention of Claim 2] Since the front surface connecting portion and the back surface connecting portion are directly engaged with each other, a portion to be engaged with the front surface connecting portion is provided separately from the back surface connecting portion. The shape of the terminal fitting can be simplified as compared with the case where the portion to be engaged with the back surface connecting portion is provided separately from the front surface connecting portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS.

[Overall Structure] In this embodiment, one specific terminal fitting 10 and a plurality of common terminal fittings 20 are vertically stacked and assembled. The specific terminal fittings 10 are arranged in the bottommost stage, and the common terminal fittings 20 are arranged in the second to topmost stages from the bottom. In the figure, the common terminal fitting 20 is
Only the second common terminal metal fitting 20 from the bottom that is directly stacked on the specific terminal metal fitting 10 is illustrated. Also, in FIG.
The upper side in 3, 5 may be called the front side and the lower side may be called the back side, but these are synonymous. Also, FIGS.
The surface appearing at 6 and 7 will be referred to as the upper surface or the surface.

[Specific terminal fitting 10] Specific terminal fitting 10
Is formed by bending a metal plate material punched into a predetermined shape, and as shown in FIGS. 2 and 3, the main body portion 11, the wire connection portion 13, the specific function portion 14, and the sandwiching portion 17 which are annular as a whole. It is provided with (a front surface connecting portion which is a constituent feature of the present invention) and a locking claw 18 (a front surface connecting portion which is a constituent feature of the present invention). A circular mounting hole 12 that is fitted onto the stud bolt S is concentrically formed at the center of the main body 11. The electric wire connecting portion 13 projects radially outward from the outer peripheral edge of the main body portion 11, and an electric wire (not shown) is fixed to the electric wire connecting portion 13 by crimping.

The specific function portion 14 is a projection portion 15 that is flush with the main body portion 11 radially outward from a position substantially opposite to the wire connecting portion 13 on the outer peripheral edge of the main body portion 11.
And a restriction piece 16 extending downward (rear surface side) from the protruding end of the protruding portion 15 at a substantially right angle. Specific terminal fitting 1
In the case of 0, the regulation piece 16 is fitted into the regulation hole H on the surface (upper surface) of the vehicle body B, so that the horizontal movement along the surface of the vehicle body B is regulated. That is, the specific function unit 14
Has a function to prevent the specific terminal fitting 10 from rotating with respect to the vehicle body B in a state where the mounting hole 12 is fitted to the stud bolt S.

The sandwiching portions 17 are provided at two locations on the outer peripheral edge of the main body portion 11 with 180 ° intervals in the circumferential direction, and are clockwise with respect to the electric wire connecting portion 13 and the specific function portion 14 when viewed from above. They are arranged at positions adjacent to each other in the direction. The sandwiching portion 17 rises in an L shape in the form of an overhang from the outer peripheral edge of the body portion 11, and the sandwiching portion 17 and the body portion 11 are formed.
A space for fitting the receiving plate portion 24 of the common terminal fitting 20 overlaid on the surface of the specific terminal fitting 10 is formed between the outer peripheral edge and the surface.

The locking claw 18 is the protruding portion 1 of the specific function portion 14.
5 is formed so as to project to the front surface side by being cut and raised, and when viewed from the front surface side, projects in the clockwise direction with the mounting hole 12 as the center. This locking claw 18 is used for the specific terminal fitting 1
Locking hole 26 of the common terminal fitting 20 that is overlaid on the surface of 0
By locking the common terminal fitting 20 to the specific terminal fitting 10, the common terminal fitting 20 is prevented from floating in the counterclockwise direction. [Common terminal fitting 20] The common terminal fitting 20 is formed by bending a metal plate material punched into a predetermined shape.
And as shown in FIG. 5, the main body 21, the wire connecting portion 23, the holding portion 27 (the surface connecting portion which is a constituent of the present invention), and the locking claw 28 (the constituent of the present invention) which have an annular shape as a whole. Which is a front surface connecting portion), a receiving plate portion 24 (a rear surface connecting portion which is a constituent feature of the present invention), and a locking hole 26 (a rear surface connecting portion which is a constituent feature of the present invention).

The main body 21 and the wire connecting portion 23 have the same form as the specific terminal fitting 10. That is, a circular mounting hole 22 that is fitted onto the stud bolt S is formed concentrically at the center of the main body portion 21. Also, the electric wire connecting portion 2
Reference numeral 3 projects radially outward from the outer peripheral edge of the main body portion 21, and an electric wire (not shown) is fixed to the electric wire connecting portion 23 by crimping. The electric wire connecting portion 2 on the outer peripheral edge of the main body portion 21
A protrusion 25 having the same shape as that of the protrusion 15 of the specific function portion 14 of the specific terminal fitting 10 is formed at a position opposite to the position of 3.

The holding portion 27 has the same form, number and arrangement as the holding portion 17 of the specific terminal fitting 10. That is, the sandwiching portion 27 is 180 degrees in the circumferential direction at the outer peripheral edge of the body portion 21.
At two places spaced apart from each other, they are arranged at positions adjacent to the electric wire connecting portion 23 and the protruding portion 25 in the clockwise direction when viewed from above. The sandwiching portion 27 rises in an L-shape from the outer peripheral edge of the main body portion 21 in an overhang shape, and is located on the surface of the common terminal fitting 20 between the sandwiching portion 27 and the surface of the outer peripheral edge of the main body portion 21. A space is formed for fitting the receiving plate portion 24 of the other common terminal fitting 20 to be stacked.

The locking claw 28 is also the same as the specific terminal fitting 10. That is, the locking claw 28 is formed so as to project to the front surface side by being cut and raised in the projecting portion 25, and projects in the clockwise direction around the mounting hole 22 as viewed from the front surface side. The locking claws 28 are locked in the locking holes 26 of the other common terminal fitting 20 that is overlaid on the surface of the common terminal fitting 20, so that the other common terminal fitting 20 is relatively counterclockwise. Regulate free movement in the direction.

The receiving plate portions 24 are two places on the outer peripheral edge of the main body portion 21 and are spaced 180 ° apart in the circumferential direction, and are adjacent to the holding portion 27 in the clockwise direction when viewed from above. It is located in. The receiving plate portion 24 is the specific terminal fitting 1 that is stacked on the back side of the common terminal fitting 20.
It is fitted in the space between the holding portion 17 of 0 and the surface of the body portion 11 thereof, or in the space between the holding portion 27 of the other common terminal fitting 20 and the surface of the body portion 21 thereof. A projection 24A is formed on the surface of the receiving plate 24, and a tapered guide slope 24B is formed on the tip edge in the clockwise direction.

The locking hole 26 is formed so as to penetrate through the protruding portion 25 in the vertical direction, and the locking claw 18 of the specific terminal metal fitting 10 or another common terminal metal fitting 20 to be stacked on the back side of the common terminal metal fitting 20. The locking claws 28 are locked. [Regular assembly form] When the common terminal fitting 20 is overlaid and connected to the surface of the specific terminal fitting 10, the mounting holes 12 and 2 are attached.
In a state where the two are aligned, the common terminal fitting 20 located on the upper side is rotated in the clockwise direction relative to the specific terminal fitting 10. Then, as shown in FIG. 1 and FIG.
Clamping portion 1 of the specific terminal fitting 10 located on the lower side (back side)
7 (connecting portion for the front surface) and the receiving plate portion 24 (connecting portion for the back surface) of the common terminal metal fitting 20 located on the upper side (front side) are engaged with each other to prevent the vertical separation of both terminal metal fittings 10, 20. To be done. Further, the locking claw 18 (front surface connecting portion) of the specific terminal metal fitting 10 and the locking hole 26 (back surface connecting portion) of the common terminal metal fitting 20.
By locking and, the common terminal fitting 20 is restricted from returning to the counterclockwise direction and rotating with respect to the specific terminal fitting 10. Further, the clockwise rear end of the sandwiching portion 17 of the specific terminal fitting 10 and the clockwise distal end of the sandwiching portion 27 of the common terminal fitting 20 are brought into contact with each other, so that the common terminal fitting 20 is clocked with respect to the specific terminal fitting 10. Excessive rotation in the rotating direction is restricted. As a result, both terminal fittings 1
0 and 20 are connected so that the electric wire connecting portions 13 and 23 are displaced in the circumferential direction and the interference is avoided so that the front and back are overlapped. After that, another common terminal fitting 20 is further stacked on the surface of the common terminal fitting 20 stacked on the surface of the specific terminal fitting 10 and connected in a stacked state in the same manner as above.

[Unauthorized Assembling Mode] Next, a case will be described in which the specific terminal fitting 10 and the common terminal fitting 20 are assembled in an illegal shape which is the reverse of the above. In this case, even if both terminal fittings 10 and 20 are set so that the electric wire connecting portions 13 and 23 have the same positional relationship as in the regular assembly, as shown in FIG. Since the receiving plate portion 24 is not provided in the terminal fitting 10, the sandwiching portion 27 of the common terminal fitting 20 located on the lower side has a function of connecting both terminal fittings 10 and 20 (both terminal fittings 10 and 2).
It does not exhibit the function of restricting the separation of 0 vertically. Further, since the specific terminal fitting 10 on the upper stage side is not provided with the locking hole 26, the common terminal fitting 20 located on the lower stage side has a function of restricting the rotation in the return direction by the locking claw 28. I can't. Therefore, both terminal fittings 1
0 and 20 will not be connected but will be easily separated.

[Effects of Embodiment] As described above, in the present embodiment, even if the common terminal fitting 20 is attached to the specific terminal fitting 10 on the back surface side opposite to the original lamination surface, the specific terminal Since the metal fitting 10 is not provided with the receiving plate portion 24 as the rear surface connecting portion and the locking hole 26, the both terminal metal fittings 10 and 20 are not connected. As a result, misassembly is prevented, the specific terminal fitting 10 is reliably arranged at the lowermost position of the stacked layers, and the restriction piece 16 is adjusted to the restriction hole H.
It is possible to surely lock it to and to surely exhibit the rotation preventing function.

Further, the holding portions 17 and 2 which are the connecting portions for the surface.
Since the 7 and the locking claws 18 and 28 are directly engaged with the receiving plate portion 24 and the locking hole 26, which are the rear surface connecting portions, respectively, the portions to be locked with the front surface connecting portion are The shape of the terminal fittings 10 and 20 is simplified as compared with a case where the terminal fittings 10 and 20 are provided separately from the back surface connecting portion and the portion to be engaged with the back surface connecting portion is provided separately from the front surface connecting portion. [Other Embodiments] The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. Various modifications can be made without departing from the scope of the invention.

(1) In the above embodiment, the front surface connecting portion and the back surface connecting portion are directly engaged with each other. However, according to the present invention, the portion locked by the front surface connecting portion is connected to the back surface. It may be provided separately from the portion, and the portion to be engaged with the back surface connecting portion may be provided separately from the front surface connecting portion. (2) In the above embodiment, the case where the specific terminal fitting is arranged at the lowermost stage has been described, but according to the present invention, it is also applicable to the case where the specific terminal fitting is arranged at the uppermost stage.

(3) In the above embodiment, the case where the specific function portion is the rotation preventing means for the vehicle body has been described, but according to the present invention, when the specific function portion is a means having a function other than the rotation preventing means. Can also be applied.

[Brief description of drawings]

FIG. 1 is a side view of the first embodiment.

[Figure 2] Plan view of specific terminal fittings

[Figure 3] Side view of specific terminal fittings

[Fig. 4] Plan view of common terminal fittings

[Figure 5] Side view of common terminal fitting

FIG. 6 is a plan view showing a state in which both terminal fittings are stacked in a regular form.

FIG. 7 is a plan view showing a state in which both terminal fittings are stacked upside down.

[Explanation of symbols]

10 ... Specific terminal fittings 14 ... Specific function unit 17 ... Clamping part (surface connecting part) 18 ... Locking claw (front surface connecting part) 20 ... Common terminal fitting 24 ... Receiving plate part (back side connecting part) 26 ... Locking hole (back side connecting part) 27 ... Clamping part (surface connecting part) 28 ... Locking claw (connecting part for surface)

Claims (2)

(57) [Claims] 1. A plurality of common terminal fittings having the same shape are laminated on the surface of a specific terminal fitting having a specific function portion, and between two terminal fittings which are superposed on the front and back sides, the terminal fitting located on the front side of the terminal fitting. By connecting the back side connecting part to the terminal fittings located on the back side and the front side connecting part of the terminal fittings located on the back side to the terminal fittings located on the front side, both the terminal fittings are connected to each other. In the assembly structure of the terminal metal fittings, the common terminal metal fitting is formed with both the front surface connection portion and the back surface connection portion, while the specific terminal metal fitting, the An assembling structure of a terminal fitting, wherein only the front surface connecting portion is formed among the front surface connecting portion and the back surface connecting portion. 2. Between the two terminal fittings that are overlapped on the front and back sides, the connection portion for the back surface of the terminal fitting located on the front side,
The terminal metal fitting assembly structure according to claim 1, wherein the terminal metal fitting located on the back side is engaged with the front surface connecting portion.