JP3206410B2 - 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 fitting assembling structure for assembling a plurality of terminal fittings in contact with each other.

[0002]

2. Description of the Related Art For example, when ground terminals individually connected to a plurality of devices are mounted on a body or the like, a structure is employed in which the ground terminals are superimposed on each other and integrally assembled, and this is fixed to the body with bolts or screws. Used. In this structure, the ground terminal is brought into close contact with the body by tightening a bolt or a screw, and the ground terminals are brought into close contact with each other. Since the ground terminals are in close contact with each other, the ground terminals that are not in direct contact with the body can also be indirectly connected to the body.

[0003]

However, in the conventional structure, the ground terminals are tightly connected to each other by tightening bolts or screws, so if the bolts or screws are loosened, they do not directly contact the body. There is a possibility that the conductivity of the ground terminal may be reduced. The present invention has been made in view of the above circumstances, and has an object to secure contact reliability between assembled terminal fittings.

[0004]

According to the first aspect of the present invention, there is provided the following:
The terminal fitting and the second terminal fitting are overlapped with the plate-like overlapping part of the second terminal fitting below the plate-like overlapping part of the first terminal fitting, and are engaged with the receiving part of the first terminal fitting. A terminal fitting assembly for contacting and assembling the second terminal fitting in a vertically controlled detachment state by superimposing a locking portion and a receiving portion of the second terminal fitting on the first portion, respectively, wherein The terminal fitting and the second terminal fitting are assembled by sliding along the length direction of the plate-shaped overlapping portion. The upper surface of the plate-shaped overlapping portion of the second terminal fitting is , The first terminal fitting and the
A protruding portion extending continuously and elongated along the mounting direction of the two terminal fittings is formed by punching, and the protruding portion and the first
The present invention is characterized in that a configuration is adopted in which the plate-shaped overlapping portions of the terminal fittings come into contact with each other and press elastically.

[0005]

[0006]

[0007]

[0008]

According to the first aspect of the present invention, when the terminal fitting is assembled, the pressing portion comes into pressure contact with another terminal fitting, thereby ensuring contact between the terminal fittings.

Further , when the terminal fittings are assembled, the state in which the protruding portions are in contact with other terminal fittings is maintained, so that contact between the terminal fittings is ensured.

[0010]

[0011]

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, 2
An example will be described in which the present invention is applied to an assembling structure of a ground terminal fitting in which two terminal fittings are assembled and attached to a grounded ground panel (not shown).

In the assembly structure of this embodiment, the first terminal fitting 10 shown in the upper part of FIG. 1 and the second terminal fitting 30 shown below the first terminal fitting 10 in FIG. Two types of terminal fittings are used.

The first terminal fitting 10 is formed by punching a conductive metal plate material into a predetermined shape and performing a bending process, and includes an assembly portion 11 and an electric wire connection portion 24.
The assembling part 11 is provided so as to extend between two flat plate-shaped overlapping parts 12, 12 which are arranged in parallel at a distance from each other and between one ends of the two plate-shaped overlapping parts 12, 12. And the plate-shaped locking portion 13 disposed between the ends of the both plate-shaped overlapping portions 12 and 12 opposite to the locking portion 13. Receiving part 14
Consists of The two plate-shaped overlapping portions 12 and 12 are set at the same surface height, and the locking portion 13 and the receiving portion 14 are set at the same surface height. And this locking part 1
The height 3 and the receiving portion 14 are set to a low height such that a step corresponding to a plate thickness is provided with respect to the two plate-shaped overlapping portions 12, 12.

The locking portion 13 has a disengagement restricting portion 15 extending flush with the receiving portion 14 on the opposite side. The disengagement restricting portion 15 has on its upper surface a second terminal described later. Hardware 3
The locking claw 16 for engaging with the 0 locking hole 39 is formed by cutting and raising. An inclined guide surface 17 for facilitating an engagement operation with a receiving portion 34 of a second terminal fitting 30 described later is formed on a leading edge of the detachment restricting portion 15. An escape groove 18 is provided between the disengagement restricting portion 15 and the plate-shaped overlapping portion 12 to allow a continuous portion of the plate-shaped overlapping portion 32 and the receiving portion 34 of the second terminal fitting 30 to enter. I have.

An engaging hole 19 is formed on the upper surface of the receiving portion 14 to engage with the engaging claw 36 of the second terminal fitting 30. Similarly, the receiving portion 14 is formed with a protruding portion 20 extending flush with the disengagement restricting portion 15, and the upper surface of the protruding portion 20 An inclined guide surface 21 for facilitating the fitting operation is formed. An escape groove 22 is provided between the projecting portion 20 and the plate-shaped overlapping portion 12 to allow a continuous portion of the plate-shaped overlapping portion 32 and the locking portion 33 of the second terminal fitting 30 to enter. ing.

Opposite edges of the locking portion 13 and the protruding portion 20 are formed in an arc shape having the same diameter and concentricity. , 1
2 are arranged so as to be in contact with each other, and a space surrounded by these edges is a through hole 23 for fitting with a stud bolt (not shown).

An electric wire connection portion 24 is formed integrally with the assembly portion 11. That is, the electric wire connection portion 24 is provided so as to extend from the edge on the side of the receiving portion 14 of the one plate-shaped overlap portion 12 in a direction perpendicular to the length direction of the plate-like overlap portion 12. I have. This electric wire connection part 24
Insulation barrel 24A and wire barrel 24B
The insulation barrel 24A has a resin coating W on the terminal of the ground wire W from the device (not shown) side.
a, and the wire barrel 24B has its ground wire W
Is bonded to the core wire Wb, which is exposed by peeling the resin coating Wa.

On the other hand, the second terminal fitting 30 is formed by punching a conductive metal plate material into a predetermined shape in the same manner as the first terminal fitting 10 and performing a bending process. It is comprised including. The assembling portion 31 has a configuration in which the assembling portion 11 of the first terminal fitting 10 is turned upside down, and the plate-shaped overlapping portions 32, 32 have the first terminal fitting 10.
And the locking portion 33 and the receiving portion 34 are overlapped on the receiving portion 14 of the first terminal fitting 10 and the upper surface side of the locking portion 13, respectively. It has become. Similarly to the first terminal fitting 10, the attachment part 31 of the second terminal fitting 30 is formed with a release restriction part 35 and a locking claw 36 on the locking part 33, and is locked on the receiving part 34. A hole 39 and a protrusion 40 are formed, and a through hole 43 that matches the through hole 23 of the first terminal fitting 10.
Are formed, and between the disengagement restricting portion 35 and the plate-shaped overlapping portion 32 and between the protrusion 40 and the plate-shaped overlapping portion 3.
2 are formed with escape grooves 38 and 42.

The electric wire connection portion 44 is provided with the first terminal fitting 1.
No. 0 as well as an insulation barrel 44A and a wire barrel 44B.
Is crimped. The electric wire connection portion 44 is provided to extend from an end side edge of the one plate-shaped overlapping portion 32 on the receiving portion 34 side in a direction perpendicular to the length direction of the plate-shaped overlapping portion 32, When assembled with the first terminal fitting 10, they are arranged in parallel with the electric wire connection part 24.

The first terminal fitting 10 and the second terminal fitting 30
Will be described. The first terminal fitting 10 is disposed above the second terminal fitting 30, and both locking portions 13, 33 are provided.
Into the through holes 43, 23 on the other side, and from this state, in the length direction of the plate-like overlapping portions 12, 32 (hereinafter, referred to as an assembling direction) so that the through holes 23, 43 are aligned with each other. Slide. Then, the detachment restricting portion 15 of the first terminal fitting 10 sinks below the receiving portion 34 of the second terminal fitting 30 and at the same time, the detachment restricting portion 35 of the second terminal fitting 30 is placed on the receiving portion 14 of the first terminal fitting 10. When the locking claws 16, 36 and the locking holes 19, 39 are fitted, the assembly of the two terminal fittings 10, 30 is completed. In this state, the locking claws 16, 36 and the locking holes 19, 3
9 prevents the assembly from being detached in the direction opposite to the assembly, and restricts excessive assembly beyond the regular position by abutting the escape grooves 18 and 42, 22 and 38 against each other. You. Further, the vertical separation is restricted by the engagement between the plate-shaped overlapping portions 12 and 32 and the engagement between the locking portions 13 and 33 and the receiving portions 14 and 34.

Next, a configuration for holding both terminal fittings 10, 30 in an assembled state will be described. Second
A projecting portion (a pressing portion, which is a constituent feature of the present invention), which is elongated on the upper surface of the two plate-shaped overlapping portions 32 of the terminal fitting 30 along its length direction (the mounting direction of the terminal fitting).
5, 45 are formed by punching. Regarding the height of the projection 45, the locking portions 13, 33 and the receiving portion 1
4 and 34 are in contact with each other, the protrusion 4 is larger than the height of the lower surface of the plate-like overlapped portion 12 of the first terminal fitting 10.
5 is set to be higher at the top.

The second terminal fitting 30 and the first terminal fitting 1
When the height of the projection 45 is set as described above, the lower surface of the plate-like overlapped portion 12 of the first terminal fitting 10 is set in a state where both the terminal fittings 10 and 30 are slightly elastically deformed. Comes into contact with the protrusion 45. In this state, the protrusions 4 are caused by the elastic restoring force of the terminal fittings 10 and 30.
5 and the plate-shaped overlapping portion 12 of the first terminal fitting 10 strongly press each other, and the locking portions 13, 33 and the receiving portions 14, 3.
4 strongly adheres.

As described above, in the present embodiment, the terminal fittings 10 and 30 are brought into strong contact with each other by the projections 45, and therefore, high contact reliability between the assembled terminal fittings 10 and 30 is achieved. Is obtained.

Moreover, in this embodiment, the projection 45 is formed to be elongated along the direction in which the terminal fittings 10 and 30 are assembled. The plate-like superimposed portion 12 comes into line contact with the frictional resistance, thereby reducing the frictional resistance and providing excellent workability in assembly.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a pressing portion for holding the first terminal fitting and the second terminal fitting in an assembled state is provided on the second terminal fitting similarly to the first embodiment. Different from 1. The first terminal fitting is the same as that of the first embodiment,
The configuration of the second terminal fitting other than the pressing portion is the same as that of the first embodiment. Therefore, for the same configuration,
The same reference numerals as in the first embodiment denote the same parts, and a description of the structure, operation, and effects will be omitted.

The pressing portion in the present embodiment is constituted by an elastic cut-and-raised piece 55 formed by cutting and raising the outer edge of the one plate-shaped overlapping portion 32 of the second terminal fitting 50 upward. The elastic cut and raised piece 55 is inclined so as to ascend in a direction in which the plate-shaped overlapping portion 12 of the first terminal fitting 10 slides during assembly. Also,
Regarding the height of the highest tip of the elastically cut and raised piece 55, the plate-like overlapping portion 12 of the first terminal fitting 10 is in a state where the locking portions 13 and 33 and the receiving portions 14 and 34 are at a height where they abut each other. The height of the elastic cut and raised piece 55 is set to be higher than the height of the lower surface of the elastic member.

The second terminal fitting 50 and the first terminal fitting 1
0, the elastic cut and raised piece 55 is elastically deformed by setting the height of the elastic cut and raised piece 55 as described above, and the elastic cut and raised piece 55 is attached to the lower surface of the plate-like overlapped portion 12 of the first terminal fitting 10. It will contact elastically. In this state, due to the elastic restoring force of the elastic cut and raised piece 55, the elastic cut and raised piece 55 and the plate-like overlapping portion 12 of the first terminal fitting 10 are strongly pressed against each other, and the locking portions 13, 33 and the receiving portion are pressed. 14 and 34 adhere strongly.

As described above, in the present embodiment, the elastic cut and raised piece 5
5, the terminal fittings 10 and 30 are brought into strong contact with each other.
High contact reliability is obtained between the 30 members.

Moreover, in this embodiment, the elastic cut and raised piece 55
Is inclined upward in the direction of assembling the terminal fittings 10 and 30, so that the first terminal fitting 1
The plate-shaped overlapping portion 12 can smoothly slide without being caught by the elastic cut-and-raised piece 55, and is excellent in workability in assembling. In addition, even when an external force is applied to slide in the dismounting direction opposite to the mounting in the mounted state, the distal end portion of the elastically cut and raised piece 55 bites into the plate-shaped overlapping portion 12 of the first terminal fitting 10. As a result, a high detachment prevention effect can be obtained.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. In the present embodiment, means for holding the first terminal fitting and the second terminal fitting in an assembled state is different from those of the first and second embodiments. The first terminal fitting is the first embodiment.
The second embodiment is the same as the first and second embodiments except that the second terminal fitting is not provided with the pressing portion. Therefore,
About the same structure, the same code | symbol as Embodiment 1 and Embodiment 2 is attached | subjected, and description of structure, an effect | action, and an effect is abbreviate | omitted.

In this embodiment, the means for maintaining the assembled state is as follows. As shown in FIG. 8, in the first terminal fitting 10, the lower surface of the plate-shaped overlapping portion 12 (the surface where the upper surface of the plate-shaped overlapping portion 32 of the second terminal fitting 60 abuts) comes off as a reference. The height A of the upper surface of the restricting portion 15 (the surface on which the lower surface of the receiving portion of the second terminal fitting abuts) is set to be higher by the dimension a. On the other hand, the second terminal fitting 6
At 0, the height B of the lower surface of the receiving portion 34 is set to be lower by the dimension b with reference to the height S of the upper surface of the plate-shaped overlapping portion 32. In other words, both terminal fittings 1
In the state where the plate-like superimposed portions 12 and 32 of 0 and 60 are in close contact with each other and their heights S are matched, the first terminal fitting 1
0 of the second terminal fitting 60.
The dimension is set so as to be lower than the height B of the lower surface of the receiving portion 34.

This dimension setting will be described according to claim 4. In order to fit the mating terminal fitting (the receiving portion 34 of the second terminal fitting 60), which is a constituent feature of the claim, the reference height S is required. Also requires a space of a size (+ b) downward. On the other hand, the fitting allowable dimension of the disengagement restricting portion 15 is set to (−a) below the reference height S. Become. That is, the fitting allowable dimension is set smaller (b − (− a) = a + b) than the dimension required for fitting the mating terminal fitting.

Although not shown, the height relationship of the receiving portion 14 with respect to the plate-like overlapping portion 12 in the first terminal fitting 10 and the plate-like overlapping portion 3 in the second terminal fitting 60 are not shown.
The height relationship of the disengagement restricting portion 35 with respect to 2 is set to the same dimension as described above.

The first terminal fitting 10 and the second terminal fitting 6
When 0 is assembled, the detachment restricting portion 15 elastically bends and comes under the receiving portion 34. At this time, the relative bending dimension of the detachment restricting portion 15 with respect to the receiving portion 34 is (a + b), and the detachment restricting portion 1 has an amount corresponding to this dimension.
5 is increased. Also, the disengagement restricting portion 35 of the second terminal fitting 60 is fitted into the receiving portion 14 of the first terminal fitting 10 by elastically bending in the same manner as described above. In the state assembled in this manner, the detachment restricting portions 15, 3 are caused by the elastic restoring force of the detachment restricting portions 15, 35.
5 and the receiving portions 14 and 34 come into close contact with each other, and the plate-shaped overlapping portions 12 and 32 come into close contact with each other.

As described above, in this embodiment, the terminal fittings 10 and 60 are brought into strong contact with each other by the engagement of the detachment restricting parts 15 and 35 with the receiving parts 14 and 34 while elastically bending. From both terminal fittings 1
High contact reliability is obtained between 0,60.

<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. In addition, various changes can be made without departing from the scope of the invention.

(1) In the first embodiment, the case where the projection is formed to be elongated in the assembling direction has been described. However, according to the present invention, the projection may be formed of, for example, a dimple. In this case, only one dimple may be provided, or a plurality of dimples may be provided side by side.

(2) In the first embodiment, the protrusion is provided only on the second terminal fitting. However, according to the present invention, the protrusion may be provided only on the first terminal fitting, and the first terminal fitting and the second terminal fitting may be provided. (3) In the second embodiment, the elastic cut and raised piece is provided only at one place of the one plate-shaped overlapping portion. However, according to the present invention, the elastic cut and raised piece is provided on both sides. May be provided at a plurality of plate-shaped overlapping portions, or may be provided at a plurality of positions of each plate-shaped overlapping portion. Providing a plurality of elastic cut-out pieces in this way can stabilize the posture and contact properties of the terminal fitting.

(4) In the second embodiment, only the second terminal fitting is provided. However, according to the present invention, the elastically cut and raised piece may be provided only on the first terminal fitting, and the first terminal fitting and the second terminal fitting may be provided. (5) In the third embodiment, in the third terminal fitting, the upper surface of the detachment restricting portion is made higher than the lower surface of the plate-like overlapped portion on the first terminal fitting side, and the receiving portion of the receiving portion is formed on the second terminal fitting side. The lower surface was made lower than the upper surface of the plate-like overlapped portion. However, in the present invention, the vertical relationship between these surfaces is not limited to Embodiment 3 described above. For example, the lower surface of the receiving portion of the second terminal fitting is higher than the upper surface of the plate-like overlapping portion, and The configuration may be such that the difference in height is set smaller than the difference in height between the upper surface of the disengagement restricting portion and the lower surface of the plate-shaped overlapping portion in the first terminal fitting. In short, the dimensions are set such that the height of the upper surface of the detachment restricting portion of the first terminal is lower than the lower surface of the receiving portion of the second terminal in a state where the plate-shaped overlapping portions of both terminal are in close contact with each other. If it is,
The invention includes all such dimensions.

(6) In the above-described embodiment, the case where the terminal fitting is applied to the type in which the terminal fitting is slid along the plate surface of the plate-like overlapping portion has been described. With alignment,
The present invention can also be applied to a type of assembling by rotating the through hole relative to the center.

(7) In the above embodiment, the case where two terminal fittings are assembled has been described. However, the present invention can be applied to a case where three or more terminal fittings are assembled.

(8) In the above embodiment, the case where the present invention is applied to a ground terminal is described. However, the present invention can be applied to a terminal used for a purpose other than the ground.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which terminal fittings are separated in a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which terminal fittings are assembled in the first embodiment.

FIG. 3 is a partially enlarged side view showing an assembled state according to the first embodiment.

FIG. 4 is a perspective view of a second terminal fitting according to the second embodiment.

FIG. 5 is a partially enlarged side view showing an assembled state in the second embodiment.

FIG. 6 is a perspective view showing a separated state according to the third embodiment.

FIG. 7 is a perspective view showing an assembled state according to a third embodiment.

FIG. 8 is a partially enlarged side view of a separated state for describing dimension setting in the third embodiment.

FIG. 9 is a partially enlarged side view of an assembled state for explaining dimension setting in a third embodiment.

[Explanation of symbols]

 10 First terminal fitting 30 Second terminal fitting 45 Projecting part (pressing part)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 11/12 H01R 11/11

Claims (1)

(57) [Claims] 1. A first terminal fitting and a second terminal fitting are overlapped with a plate-like overlapping part of the second terminal fitting below a plate-like overlapping part of the first terminal fitting, and the first terminal is provided. A terminal fitting assembling structure for contacting and assembling the second terminal fitting in a vertically separated state by superposing the engaging portion and the receiving portion of the second terminal fitting on the receiving portion and the engaging portion, respectively. Wherein the first terminal fitting and the second terminal fitting are assembled by sliding along a length direction of the plate-shaped overlapping portion, and the plate-like shape of the second terminal fitting is provided. on the upper surface of the overlapping portion, wherein
Along the assembling direction of the first terminal fitting and the second terminal fitting
A terminal fitting having a configuration in which a continuously elongated projection is formed by tapping, and the projection and the plate-shaped overlapping portion of the first terminal fitting are brought into contact with each other and pressed elastically. Mounting structure.