JP2005100850A - Fitting structure of terminal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a combination structure between terminal fittings to allow easy and rapid fitting to each other. <P>SOLUTION: Projecting parts 11 are respectively formed at least on the sides of two facing sides of a plate-like superposed part 10 of a first terminal fitting 1 by erecting them; insertion holes 21 and 31 for inserting the projecting parts 11 are formed on the sides of two facing sides of each of plate-like superposed parts 20 and 30 of second and third terminal fittings 2 and 3; the projecting parts 11 of the terminal fitting 1 are inserted into the insertion holes 21 and 31 of the terminal fittings 2 and 3, and the respective superposed parts 10, 20 and 30 are superposed; and the projecting parts 11 are welded to the circumferences of the insertion holes 21 and 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a terminal fitting assembly structure in which a plurality of terminal fittings are brought into contact with each other using bolts or the like.

  For example, when attaching ground terminals individually connected to a plurality of devices to the body of an automobile, etc., a structure is used in which the ground terminals are assembled together so as to overlap each other and secured to the body with bolts. . In this structure, the ground terminals are brought into close contact with the body by tightening the bolts, and the ground terminals are brought into close contact with each other. When the ground terminals are in close contact with each other in this way, the ground terminal that is not in direct contact with the body can also indirectly conduct with the body.

However, in the conventional structure, since the contact between the ground terminals is merely due to contact with each other, in order to ensure the conductivity between the ground terminals, the two terminal fittings must be tightened firmly until they are brought into close contact with each other. In other words, there is a risk that the continuity of the ground terminal that is not in direct contact with the body may be impaired even if the bolt is slightly loosened. Thus, an assembly structure of terminal fittings has been developed that ensures contact reliability between the assembled terminal fittings (for example, Patent Document 1). This is an assembly structure of terminal fittings in which the terminal fittings are held in contact with each other by tightening the plurality of terminal fittings with the overlapping fastening tool while sliding the opposing surfaces. More specifically, the pressing portion is formed by protruding the opposing surfaces of the terminal fittings so that a gap is formed between the terminal fittings when the terminal fittings are overlapped with each other, and the fastening tool is By tightening the area inside the pressing part, the terminal fittings are bent and deformed in the direction in which the terminal fittings approach each other, whereby the pressing part can contact the mating terminal fittings with elasticity, and the pressing part is It is formed from the protrusion extended along the combination direction of a terminal metal fitting.
Japanese Patent No. 3167106 (page 1-2, FIG. 1)

  The thing of the above-mentioned patent document 1 had the problem that workability | operativity was not good, since the united structure of terminal metal fittings was complicated.

  Therefore, the present invention provides a simple assembly structure of terminal fittings and easily and quickly assembling at least three terminal fittings, that is, providing an assembly structure of terminal fittings with good workability. Objective.

  In order to achieve the above-described object, the present invention provides a first terminal fitting in an assembling structure of terminal fittings in which at least plate-like overlapping portions provided in each of the first to third terminal fittings are attached to each other. The raised portions are provided upright on at least two opposing sides of the plate-like overlapping portion, and the protruding portions are inserted on the opposite two sides of the respective plate-like overlapping portions of the second and third terminal fittings. The projections of the first terminal fittings are inserted into the insertion holes of the second and third terminal fittings to superimpose the respective plate-like overlapping portions, and the projections and the respective insertion holes are formed. This is a welded area.

  In the present invention, three or more terminal fittings can be easily combined and assembled with a constant contact pressure. In addition, by simply inserting the convex portion of one terminal fitting into the insertion hole of the other terminal fitting, each plate-like overlapping portion can be quickly overlapped, and then the periphery of the convex portion and the insertion hole By welding, the workability is good and the contact pressure can be sufficiently secured. Further, the plate-like overlapping portion of each terminal fitting is a flat plate shape excluding the convex portion, and it is not necessary to process anything in this portion, and the production of the terminal fitting can be performed at a very low cost.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the embodiment shown in FIG. 1, the plate-like overlapping portion 20 of the second terminal fitting 2 is overlapped with the plate-like overlapping portion 10 of the first terminal fitting 1, and further the third terminal fitting 3 is placed on the second terminal fitting 2. The plate-like overlapping portions 30 are assembled and assembled, and ground electric wires W extending from devices (not shown) are connected to the respective plate-like overlapping portions 10, 20, and 30. Further, insertion holes 10A, 20A, 30A for inserting tightening bolts (not shown) are formed at the centers of the respective plate-like overlapping portions 10, 20, 30, and these insertion holes 10A, 20A, 30A are formed. Are overlapped so that the plate-like overlapping portions 10, 20, and 30 are overlapped.

  As shown in FIG. 2, the first terminal fitting 1 is provided with raised portions 11 erected on opposite two sides of a plate-like overlapping portion 10 formed in a substantially square shape. The pair of convex portions 11 are formed by forming a tongue piece with cuts 11A on both sides when the plate-like overlapping portion 10 is formed by punching a metal plate, and the tongue piece is bent and raised. Further, the ground wire W is connected to one end (the left end of the lower side in FIG. 2) of one side of the plate-like overlapping portion 10.

  FIG. 3 shows the second terminal fitting 2, and an insertion hole 21 into which the convex portion 11 is inserted is formed on two opposite sides of the plate-like overlapping portion 20 of the second terminal fitting 2. When this plate-shaped overlapping portion 20 is overlapped with the plate-shaped overlapping portion 10 of the first terminal fitting 1, the convex portion 11 of the first terminal fitting 1 is inserted into the insertion hole 21, and the two plate-like overlapping portions 10. , 20 are superimposed at the proper position.

  FIG. 4 shows the third terminal fitting 3, and an insertion hole 31 into which the convex portion 11 is inserted is formed on two opposite sides of the plate-like overlapping portion 30, similarly to the second terminal fitting 2. The third terminal fitting 3 is further overlapped on the plate overlapping portion 20 of the second terminal fitting 2 that is overlapped with the plate overlapping portion 10 of the first terminal fitting 1.

  As shown in FIG. 1, after overlapping the three terminal fittings 1 to 3, the three plate-like overlapping portions 10, 20 are welded by welding the convex portion 11 and the periphery of the respective insertion holes 21, 31. , 30 are kept in contact and fixed at a predetermined contact pressure. As welding means, means such as arc welding, resistance welding, ultrasonic welding, laser welding, and arc welding can be employed, and the projection 11 can be crushed and the three joining fittings can be firmly assembled.

  As described above, it is only necessary to insert the insertion holes 21 and 31 into the convex portion 11 so that the plate-like overlapping portions 10, 20, and 30 provided in the at least three terminal fittings 1 to 3 are overlapped with each other. The workability is good and the combined structure is simple. When the plate-like overlapping portion 10 is formed by punching a metal plate, the convex portion 11 is formed by forming a tongue piece with notches 11A on both sides and bending the tongue piece upright. Yes. With such a structure, the manufacture becomes easy and can be manufactured at low cost. Moreover, although each plate-shaped superimposition part 10,20,30 in the Example mentioned above was made into the substantially square quadrangle | tetragon, it may be a positive number polygon, for example, a hexagon or an octagon.

  FIG. 5 shows another embodiment, in which convex portions 11 are formed on all four sides of the first terminal fitting 1, and four insertion holes 21, 31 are formed in the second and third terminal fittings 2 and 3, respectively. Is formed. And when the 2nd terminal metal fitting 2 shown in FIG. 6 is assembled | attached with respect to the 1st terminal metal fitting 1 shown in FIG. 5, it will be in the state shown in FIG. That is, the four convex portions 11 formed on the plate-shaped overlapping portion 10 of the first terminal metal fitting 1 are inserted into the four insertion holes 21 formed on the plate-shaped overlapping portion 20 of the second terminal metal fitting 2 to each other. Are overlapped at a predetermined position. Next, when the third terminal fitting 3 shown in FIG. 7 is assembled to the one shown in FIG. 8, the state shown in FIG. 9 is obtained. In the state of FIG. 9, four insertion holes 31 are inserted into the four convex portions 11, and the three plate-like overlapping portions 10, 20, and 30 are overlapped. The three terminal fittings 1 to 3 can be assembled by welding the periphery of 21 and 31.

  The ground wire W is wired to various devices (not shown) and connected to the terminal fitting. And in the state shown in FIG.1 and FIG.9, it can earth | ground by attaching the fastening bolt which is not shown in figure to the body of a motor vehicle. However, these terminal fittings are not necessarily limited to earth terminals, and can be used for purposes other than earth. Moreover, it is preferable to use copper or a copper alloy for each terminal metal fitting in order to improve electroconductivity.

The perspective view after the assembly | attachment which shows suitable embodiment of this invention. The perspective view of a 1st terminal metal fitting. The perspective view of the 2nd terminal metal fitting. The perspective view of a 3rd terminal metal fitting. The perspective view of the 1st terminal metal fitting in other embodiments. The perspective view of the 2nd terminal metal fitting. The perspective view of a 3rd terminal metal fitting. The perspective view of the state which piled up the 1st terminal metal fitting and the 2nd terminal metal fitting. The perspective view of the state which completed the assembly | attachment by overlapping the 1st thru | or 3rd terminal metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st terminal metal fitting 2 2nd terminal metal fitting 3 3rd terminal metal fitting 10, 20, 30 Plate-shaped overlap part 10A, 20A, 30A Insertion hole 11 Convex part 21, 31 Insertion hole

Claims (5)

In the terminal fitting assembly structure in which at least the first to third terminal fittings each have a plate-like overlapping portion that is provided on each other are assembled together,
Protruding portions are provided upright on at least two opposite sides of the plate-like overlapping portion of the first terminal fitting,
Forming an insertion hole into which the convex portion is inserted on the two opposite sides of the respective plate-like overlapping portions of the second and third terminal fittings;
Inserting the convex portions of the first terminal fittings into the insertion holes of the second and third terminal fittings and superimposing the respective plate-like overlapping portions,
An assembly structure of a terminal fitting, wherein the convex portion and the periphery of each insertion hole are welded.   2. The terminal fitting assembly structure according to claim 1, wherein each of the plate-like overlapping portions is a positive polygon, and an insertion hole for inserting a fastening bolt is formed at the center.   The convex portion is formed by forming a tongue piece with incisions on both sides when the plate-shaped overlapping portion is formed by punching a metal plate, and bending and raising the tongue piece. Item 3. The terminal metal fitting assembly structure according to item 1 or 2.   4. The terminal metal fitting assembly according to claim 1, wherein the welding is resistance welding, ultrasonic welding, laser welding, or arc welding. 5. The terminal fitting assembly structure according to any one of claims 1 to 4, wherein a material of each terminal fitting is copper or a copper alloy.