JPH09161867A - Assembling structure of terminal metal fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the reliability on contact between the mated metal fixture assembled, by specified constitution, in the assembling structure of the terminal metal fixture for bringing a plurality of terminal metal fittings into contact with each other for assembly. SOLUTION: A plurality of terminal metal fittings 10 and 30 are provided with plate-shaped superposition parts 12 and 32 which are to be laid on top of the other in setup condition, and this setup structure possesses a retaining means 50 which presses the mating plate-shaped superposition parts 12 and 32 to that they may adhere to each other. It is desirable that the through holes 23 and 43 coincided with other terminal metal fittings 30 and 10 in assembled condition should be made at the superposition parts 12 and 32, that the retaining means 50 should be constituted of a collar 50 which can penetrate into the through holes 23 and 43 and also is equipped, at one end, with a locking flange 51 to engage with the brims of the through holes 23 and 43, and that the other end of the collar 50 should be deformed to engage with the brims of the through holes 23 and 43 so as to fix the plate-shaped superposition parts 12 and 23, holding them between itself and the locking flange 51.

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 structure for assembling a plurality of terminal metal fittings in contact with each other.

[0002]

2. Description of the Related Art For example, when attaching grounding terminals individually connected to a plurality of devices to a body or the like, a structure in which the grounding terminals are superposed on each other and assembled integrally and fixed to the body by bolts or screws is used. It is used. In this structure, the ground terminals are brought into close contact with the body and the ground terminals are brought into close contact with each other by tightening bolts or screws. 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, since the ground terminals are adhered to each other by tightening the bolts or the screws, if the bolts or the screws are loosened, they are not in direct contact with the body. There is a possibility that the conductivity of the ground terminal may deteriorate. The present invention was devised in view of the above circumstances, and an object thereof is to ensure contact reliability between assembled terminal fittings.

[0004]

According to the present invention, there is provided a terminal fitting assembly structure for assembling a plurality of terminal fittings in contact with each other, wherein the terminal fittings are superposed on each other in an assembled state. A plate-shaped overlapping part is provided,
The present invention is characterized in that it is provided with a holding means that presses the plate-shaped overlapping portions so that they are in close contact with each other.

According to a second aspect of the present invention, in the first aspect of the invention, the plate-shaped overlapping portion is formed with a through hole which is aligned with other terminal fittings in the assembled state, and the holding means can penetrate the through hole. And a locking collar provided at one end with a locking collar that is engaged with the hole edge of the through hole, and the other end of the cylindrical body is deformed to engage with the hole edge of the through hole. It is characterized in that the plate-shaped overlapping portion is sandwiched and fixed between the two.

According to a third aspect of the present invention, in the first aspect of the present invention, the holding means is constituted by a bendable fixing piece extending from at least one of the terminal fittings to be assembled and extending from the plate-shaped overlapping portion. The characteristic feature is that the terminal piece is fixed in the assembled state by bending this fixing piece and engaging it so as to be sandwiched by the mating side terminal piece.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the holding means is composed of a U-shaped holding member which is a component separate from the terminal fitting, and the plate-like lap is attached to the assembled terminal fitting. It is characterized in that the terminal fitting is fixed in the assembled state by attaching the holding member so as to sandwich the mating portion.

[0008]

According to the invention of claim 1, when the terminal fittings are assembled, the plate-shaped overlapping portion is held in a close contact state by the holding member, so that the contact between the terminal fittings is secured.

According to the second aspect of the present invention, when the terminal fittings are assembled and the other end is deformed by penetrating the cylindrical body into the through hole, the assembled terminal fittings are sandwiched between the plate-shaped overlapping portions. It is fixed, so that the contact between the terminal fittings is secured.

According to the third aspect of the invention, when the terminal fittings are assembled and the fixing pieces are bent, the fixing pieces fix the plate-shaped overlapping portions in a sandwiched state, thereby ensuring contact between the terminal fittings. It

According to the invention of claim 4, when the terminal fitting is assembled and the holding member is attached, the plate-shaped overlapping portions are fixed by the holding member in a sandwiched state, thereby ensuring the contact between the terminal fittings. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A first preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the present embodiment, 2
An example will be described in which two terminal fittings are assembled and attached to a grounded grounding panel (not shown), which is applied to a grounding terminal fitting assembly structure.

In the assembling structure of this embodiment, the first terminal fitting 10 shown in the upper part of FIG. 1 and the second terminal fitting 30 shown under 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 bending it, and is composed of an assembly portion 11 and an electric wire connection portion 24.
The assembling portion 11 is arranged so as to be passed between two flat plate-like overlapping portions 12 and 12 arranged in parallel with each other with a space therebetween and one end portion of both plate-like overlapping portions 12 and 12. And the plate-shaped locking portion 13 disposed on the opposite side, and the plate-shaped locking portion 13 disposed between the two plate-shaped overlapping portions 12 and 12 on the opposite side of the locking portion 13 from each other. Receiver 14
Consists of The two plate-shaped overlapping portions 12 and 12 have the same surface height, and the locking portion 13 and the receiving portion 14 have the same surface height. And this locking portion 1
3 and the receiving portion 14 are set to a low height in which the plate-like overlapping portions 12 and 12 are provided with a step substantially corresponding to the plate thickness.

The engaging portion 13 is formed with a disengagement restricting portion 15 which extends in a flush manner to the side opposite to the receiving portion 14, and an upper surface of the disengagement restricting portion 15 has a second terminal which will be described later. Metal fittings 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.

On the upper surface of the receiving portion 14, there is formed a locking hole 19 for engaging with the locking 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.

The edge portions of the engaging portion 13 and the projecting portion 20 which face each other are formed in an arc shape having a concentric and concentric diameter, and both plate-shaped overlapping portions 12 with respect to a virtual circle having a concentric and concentric diameter. , 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).

A wire connecting portion 24 is integrally formed with the assembling 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 similarly to the first terminal fitting 10 and bending it to form an assembly portion 31 and an electric wire connection portion 44. It is configured with. 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.

Further, the wire connecting portion 44 includes 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 a 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, and 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
The assembling procedure will be described. The first terminal fitting 10 is arranged above the second terminal fitting 30, and the locking portions 13 and 33 of both sides are arranged.
Respectively into the through holes 43, 23 of the other side, and from this state, in the longitudinal direction of the plate-shaped overlapping portions 12, 32 (hereinafter referred to as the assembling direction) so that the through holes 23, 43 are aligned with each other. Slide it. Then, the disengagement restricting portion 15 of the first terminal fitting 10 sinks under the receiving portion 34 of the second terminal fitting 30, and at the same time, the disengagement restricting portion 35 of the second terminal fitting 30 moves above the receiving portion 14 of the first terminal fitting 10. When the locking claws 16 and 36 are fitted into the locking holes 19 and 39, the assembly of the terminal fittings 10 and 30 is completed. In this state, the locking claws 16 and 36 and the locking holes 19 and 3
The engagement with 9 restricts the disengagement in the opposite direction to the assembling, and the rear ends of the escape grooves 18 and 42, 22 and 38 come into contact with each other to prevent excessive assembling beyond the normal position. It Further, the vertical disengagement 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, the structure for holding both the terminal fittings 10 and 30 in the assembled state will be described. In this embodiment, as the holding means, the cylindrical body 50 which is a separate component from the terminal fittings 10 and 30 is used. The cylindrical body 50 is formed of a metal material into a cylindrical shape and has an outer diameter of the through hole 23,
43 has a size that allows it to be fitted in without a large gap, and the axial length is set to be larger than the size in which the thicknesses of both assembled plate-shaped overlapping portions 12 and 32 are combined. ing. At the lower end of the cylindrical body 50 in the drawing, a locking flange 51 is formed to extend outward over the entire circumference.

The tubular body 50 is fitted into the aligned through holes 23 and 43 from the lower side in a state where the first terminal fitting 10 and the second terminal fitting 30 are assembled. In this state, the locking flange 51 is engaged with the hole edge on the lower surface side of the through holes 23, 43, and the upper end portion of the tubular body 50 is through holes 23, 43.
(See FIG. 2). In this state, the upper end portion of the cylindrical body 50 is expanded outward in a brim shape by a pressing operation of a jig (not shown) and deformed so as to be engaged with the hole edges on the upper surface side of the through holes 23 and 43. Then, between the deformed collar-shaped portion 52 and the locking collar 51, the plate-shaped overlapping portions 12 and 32 are sandwiched in the vertical direction (overlapping direction) and firmly adhered to each other (Fig. See 3).

As described above, in this embodiment, the plate-shaped overlapping portions 12 and 32 are firmly sandwiched by the cylindrical body 50, so that the assembled terminal fittings 1 are
High contact reliability is obtained between 0 and 30.

<Second Embodiment> Next, a second preferred embodiment of the present invention will be described with reference to FIGS. In this embodiment, the second terminal fitting is provided with a holding means for holding the first terminal fitting and the second terminal fitting in an assembled state. The first terminal fitting is the same as that of the first embodiment, and the second
The configuration of the terminal fitting other than the holding means is the same as that of the first embodiment. Therefore, the same configurations are denoted by the same reference numerals as those in the first embodiment, and the description of the structure, action, and effect is omitted.

The second terminal fitting 60 in the present embodiment is integrally formed with a plate-shaped fixing piece (holding means) 70 that rises upward from the outer edge of the plate-shaped overlapping portion 32. The fixing piece 70 has a height dimension that is sufficiently larger than the plate thickness of the plate-shaped overlapping portion 12 of the first terminal fitting 10.

The fixing piece 70 is bent and deformed inward when the first terminal fitting 10 and the second terminal fitting 60 are assembled, and the plate-shaped overlapping portion 12 of the first terminal fitting 10 is formed as shown in FIG. Is crimped on the upper surface of. Then
The plate-shaped overlapping portion 12 of the first terminal metal fitting 10 is sandwiched between the bent and deformed fixing piece 70 and the plate-shaped overlapping portion 32 of the second terminal metal fitting 60, and both plate-shaped overlapping portions 12 are sandwiched. , 32 firmly adhere to each other.

As described above, in this embodiment, the plate-shaped overlapping portions 12 and 32 are firmly brought into close contact with each other by the fixing piece 70, so that the height between the assembled terminal fittings 10 and 60 is high. Contact reliability is obtained.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the first terminal fitting and the second
Second holding means for holding the terminal fitting in the assembled state
Although it is provided on the terminal fitting, its configuration is the same as that of the second embodiment.
And different. The first terminal fitting is the first or second embodiment.
The second terminal fitting is also the same as the first and second embodiments except for the holding means. Therefore, the same configurations are denoted by the same reference numerals as those in the first and second embodiments, and the description of the structure, operation, and effect is omitted.

The second terminal fitting 80 in the present embodiment is bent upward from the outer edge of the one plate-shaped overlapping portion 32 and the upper end of the rising portion 91 is bent inward to form an overhang shape. The plate-shaped fixed piece (holding means) 90 is integrally formed. The lower surface of the overhanging pressing portion 92 and the plate-like overlapping portion 32
Is not constant, and the lower surface of the pinching portion 92 is inclined so that the tip side is lowered. Then, as shown in FIGS. 8 and 9, the interval in the continuous portion with the rising portion 91 is set to be the same as the plate thickness dimension T of the plate-shaped overlapping portion 12 of the first terminal fitting 10. In addition, the clamping unit 92
The spacing at the tip edge of the is not constant in the direction along the edge, and the spacing at the end of the first terminal fitting 10 on the side where the plate-shaped overlapping portion 12 enters (right side in FIG. 8) is greater than the plate thickness dimension T. Is set to a larger dimension (T + a), and the interval between the ends on the opposite side is set to a dimension (T-b) smaller than the plate thickness dimension T. Further, between the both ends, the lower surface of the pinching portion 92 is an inclined guide surface 93 for facilitating the entry operation of the plate-shaped overlapping portion 12 of the first terminal fitting 10.

When assembling the first terminal fitting 10 and the second terminal fitting 80, the plate-like overlapping portion 12 of the first terminal fitting 10 is clamped to the pinching portion 92 and the plate-like overlapping portion 32 of the second terminal fitting 80. It fits in so that it can sneak in between. At this time, the distance between the end portions on the entry side is larger than the plate thickness T of the plate-shaped overlapping portion 12, so that the submergence of the plate-shaped overlapping portion 12 is not hindered. Furthermore, since the lower surface of the pressing portion 92 is the guide surface 93 that is inclined in the diving direction of the plate-shaped overlapping portion 12, the diving operation proceeds smoothly. And after diving to some extent,
The engagement with the plate-shaped overlapping portion 12 causes the fixing piece 90 to have an elastic bending portion so that the pressing portion 92 expands upward. In the state where the plate-shaped overlapping portion 12 has completed the diving operation, the elastic restoring force of the fixing piece 90 causes the plate-shaped overlapping portion 12 of the first terminal fitting 10 to be aligned with the plate-shaped overlapping portion 32 of the second terminal fitting 80. It is elastically sandwiched between the two, and the plate-shaped overlapping portions 23 and 32 are firmly adhered to each other.

As described above, in the present embodiment, the plate-shaped overlapping portions 12 and 32 are firmly brought into close contact with each other by the elastic restoring force of the fixing piece 90. High contact reliability can be obtained.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIGS. The present embodiment uses a holding means that is a separate component from the first terminal fitting and the second terminal fitting, as in the first embodiment. The configuration of the first terminal fitting and the second terminal fitting is the same as in the first embodiment.
The same configurations as those in the first embodiment are denoted by the same reference numerals, and the description of the structure, action, and effect is omitted.

The holding means of this embodiment comprises a U-shaped holding member 100 made of a metal material. This holding member 10
The plate-shaped overlapping portions 12 and 32 that are overlapped with each other are sandwiched between the plate-shaped overlapping portions 12 and 32 of the plate-shaped overlapping portions 12 and 32. It is set slightly larger than the combined thickness.

The holding member 100 is the first terminal fitting 1
0 and the second terminal fitting 30 are attached to the outer edges of the plate-like overlapping portions 12 and 32 on one side, and are crimped from above and below by a jig (not shown). As a result, both plate-shaped overlapping portions 12 and 32 are firmly sandwiched and brought into close contact with each other.

As described above, in the present embodiment, the plate-shaped overlapping portions 12 and 32 are firmly sandwiched by the holding member 100, so that the height between the assembled terminal fittings 10 and 30 is high. Contact reliability is obtained.

<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 second embodiment, the fixing piece before being bent and deformed is formed so as to stand up at a right angle from the plate-shaped overlapping portion, but according to the present invention, the fixing piece is formed into the plate-shaped overlapping portion. It may be configured to extend in a plane. The invention can also be applied in cases.

(2) In the second and third embodiments, the case where the fixing piece is provided only on the second terminal metal fitting side has been described, but the fixing piece may be provided on the first terminal metal fitting side. You may provide in both a metal fitting and a 2nd terminal metal fitting.

(3) In the second and third embodiments, the case where the fixing piece is arranged at the outer edge portion of one plate-shaped overlapping portion has been described. However, according to the present invention, the position where the fixing piece is provided is a through hole. It may be another part such as a hole edge of the hole, and the number of fixing pieces may be plural.

(4) In the fourth embodiment, the case where the holding member is attached by caulking has been described. However, according to the present invention, a holding member having the same shape as that of the fourth embodiment may be elastically attached. In this case, the plate-shaped overlapping portion is pressed by the elastic restoring force of the holding member. Further, in the case of elastically attaching in this way, if a convex portion is formed inside the tip end portion of the holding member and is fitted into the concave portion formed in the plate-shaped overlapping portion, the holding member will come off. Can be prevented.

(5) In the above-described embodiment, the case where the terminal fitting is applied by sliding it along the plate surface of the plate-shaped overlapping portion has been described. However, the present invention has a bolt through hole. With alignment,
It can also be applied to a type in which the through hole is relatively rotated and assembled.

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

(7) In the above embodiment, the case where the present invention is applied to the terminal fitting for grounding has been described, but the present invention can also be applied to a terminal fitting used for purposes other than grounding.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a separated state according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the terminal fitting is assembled and the tubular body is temporarily assembled in the first embodiment.

FIG. 3 is a perspective view showing a state where assembly is completed in the first embodiment.

FIG. 4 is a perspective view showing a separated state according to the second embodiment.

FIG. 5 is a perspective view showing a state where assembly is completed in the second embodiment.

FIG. 6 is a perspective view of a second terminal fitting according to the third embodiment.

FIG. 7 is a perspective view showing a state where assembly is completed in the third embodiment.

FIG. 8 is a partially enlarged rear view for explaining the dimension setting of the fixing piece according to the third embodiment.

FIG. 9 is a partially enlarged side view in a separated state for explaining the dimension setting of the fixing piece according to the third embodiment.

FIG. 10 is a partially enlarged side view of the third embodiment in an assembled state.

FIG. 11 is a perspective view showing a state during assembly in the fourth embodiment.

FIG. 12 is a perspective view showing a state in which assembly is completed in the fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... 1st terminal metal fitting 12, 32 ... Plate-shaped overlapping part 23, 43 ... Through hole 30 ... 2nd terminal metal fitting 50 ... Cylindrical body (holding means) 51 ... Locking collar

Claims (4)

[Claims] 1. An assembly structure of terminal fittings for assembling a plurality of terminal fittings in contact with each other, wherein the terminal fittings are provided with plate-shaped overlapping portions that are overlapped with each other in an assembled state, An assembling structure of a terminal fitting, comprising holding means for pressing the plate-shaped overlapping portions so as to bring them into close contact with each other. 2. The plate-shaped overlapping portion is formed with a through hole which is aligned with other terminal fittings in the assembled state, and the holding means is pierceable through the through hole and has a hole edge of the through hole at one end. A tubular body having a locking collar that engages with the locking collar, and the other end of the cylindrical body is deformed to engage with the hole edge of the through hole so that the plate-shaped overlap is formed with the locking collar. The terminal metal fitting structure according to claim 1, wherein the mating portion is sandwiched and fixed. 3. The holding means is composed of a bendable fixing piece extending from the plate-shaped overlapping portion on at least one of the terminal fittings to be assembled, and the fixing piece is bent to form a mating terminal. The terminal metal fitting assembly structure according to claim 1, wherein the terminal metal fitting is fixed in the assembled state by being engaged so as to be sandwiched between the metal fittings. 4. The holding means is composed of a U-shaped holding member which is a separate component from the terminal fitting, and the holding member is attached to the assembled terminal fitting so as to sandwich the plate-shaped overlapping portion. The terminal metal fitting structure according to claim 1, wherein the terminal metal fitting is fixed in the assembled state.