JPH0720867Y2 - Flexible conductor terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a flexible conductor terminal having terminal plates at both ends of a flexible conductor.

[Conventional technology]

Flexible conductor terminals used for internal wiring of conventional OA equipment,
As shown in FIG. 6, the rectangular conductor terminal plates 11 and 11 are provided on both ends of the flexible conductor 10 such as a flexible conductor plate or a braided conductor in which thin copper plates are laminated.
7 are connected by compression, and as shown in FIG. 7, the tip surfaces of the terminal plates 11, 11 such as copper plates are put on the plate surfaces of both ends of the flexible conductor 10 and the contact surfaces are electron beam welded. , Laser welding, plasma welding, etc. were connected by welding.

In addition, both ends of the flexible part in which thin plates or thin knitted wires of conductive material are laminated are grasped by the reinforcing plates, and solder is poured from the end faces of the reinforcing plate into the grasping parts, and the poured solder enters the gap in the laminated flexible conductor In order to prevent the flexibility from being impaired, a flexible conductor of Japanese Utility Model Laid-Open No. 57-117013 is known in which this gripping portion is electron beam welded to form a solder intrusion prevention welding wall.

In addition, by twisting a large number of flexible conductor wire bundles to inflate the middle portion of the conductor wire bundle and inserting and fixing both ends of the rod body in the center holes of the terminal portions at both ends to maintain the interval between both terminals, A flexible wire bundle with a bulge in the middle is known from EP-A-7546 (1980).

[Problems to be solved by the device]

Although the flexible conductor terminals as shown in FIGS. 6 and 7 are used in a low temperature atmosphere or with a low voltage and a large current, the flexible conductor terminals shown in FIG. Since the end portion of the flexible conductor 10 such as a flexible braided wire and the connection portion of the terminal plate 11 are connected by compression, there is a problem that heat is generated due to compression contact. In the flexible conductor terminal shown in FIG. 7, since the contact surfaces of the flexible conductor 10 and the terminal plate 11 are welded,
There is a problem in that the tip of the flexible conductor 10 is bent at the time of welding, pinholes or bulges are generated in the welded part, the reliability of the connection part is lacking, the welded part looks bad and the commercial value decreases. .

Further, the flexible conductor disclosed in the above-mentioned utility model has a problem that the productivity is poor because the solder that is poured into the reinforcing plate at the end of the laminated flexible conductor must be poured so as not to enter the gap in the laminated flexible conductor. However, the flexible conductor wire bundle having the special shape in which the flexible conductor wire bundle disclosed in the above-mentioned European Patent Application is twisted and the middle portion of the conductor wire bundle is expanded cannot be used as a general flexible conductor terminal.

The present invention solves the above-mentioned problems, does not generate heat in the connection part, does not generate blisters, pinholes, or rises in the welded part, has stable electrical characteristics over the years, and has high commercial value. The purpose is to provide.

[Means for Solving the Problems]

In order to achieve the above object, the flexible conductor terminal of the present invention comprises:
Both ends of the flexible conductor 2 are respectively poured into the fitting holes 4 of the terminal plates 3 and 3, and the inner deep end portion of the fitting hole 4 and the insertion end portion of the flexible conductor 2 are connected to each other. A welded welded connection portion a is provided.

[Action]

The tip end of the flexible conductor 2 is inserted into the fitting hole 4 of the terminal plate 3, and the inner back end of the fitting hole 4 is welded to the insertion tip of the flexible conductor 2. As a result, since the welded connection portion a is formed at the inner rear end of the fitting hole 4, the tip end portion of the flexible conductor is not burred during welding, and no pinhole or rising is generated in the welded portion. Further, since the flexible conductor 2 and the terminal plate 3 are not connected by compression, heat generation due to compression contact does not occur.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a flexible conductor terminal 1 of the present invention, and 2 is a flexible conductor composed of a flexible plate or a flexible braided wire in which thin copper plates are laminated. Reference numeral 3 is a terminal plate made of a copper plate or the like, and a fitting hole 4 having a required depth is provided on the tip surface thereof. Both ends of the flexible conductor 2 are inserted into the fitting holes 4 of the terminal plates 3 and 3, respectively, and the tip of the flexible conductor 2 is brought into contact with the inner rear end of the fitting hole 4, and the fitting is performed. At the inner rear end of the hole 4, the inner rear end and the insertion tip of the flexible conductor 2 are welded together to form a welded connection portion a.
To form. This welding is performed by electron beam welding, laser welding, plasma welding or the like from the outside of the terminal plate 3 at the portion forming the welding connection portion a.

As described above, the tip of the flexible conductor 2 is fitted into the fitting hole 4 of the terminal plate 3.
When the flexible conductor tip is positioned so that it is located at the inner end of the fitting hole when it is inserted and welded to the innermost end of the fitting, as shown in FIG. The flexible conductor tip inserted in the hole 4 is caulked at an arbitrary position b for positioning, or, as shown in FIG. 3, the flexible conductor tip inserted in the fitting hole 4 is welded at the arbitrary position b. And position it.

Another embodiment of the flexible conductor terminal 1 of the present invention shown in FIG. 4 is similar to the embodiment shown in FIG. 1 in that one or both of the terminal plates 3 and 3 into which the tip of the flexible conductor 2 is inserted. , Fitting hole 4
Is provided with a notch groove 4a communicating with the inner rear end of the terminal plate 3 and opening to the side surface of the terminal plate 3.
It is visually confirmed in the notch groove 4a that the end face of the tip end portion of the flexible conductor 2 inserted into the inner wall of the fitting hole 4 is in contact with the welded connection portion a.
Since it can be confirmed that the inner end of the fitting hole 4 and the insertion end of the flexible conductor 2 are accurately welded, the quality of the welded connection can be determined.

Another embodiment of the flexible conductor terminal 1 of the present invention shown in FIG. 5 is the same as the embodiment shown in FIG.
Is provided with a notch groove 4a communicating with the inner rear end of the connector and opening to the side surface of the terminal plate 3, and the end face of the tip of the flexible conductor 2 inserted into the fitting hole 4 contacts the inner rear surface of the fitting hole. This is visually confirmed, and by fitting the contact plate 4b into the cutout groove 4a, the insertion portion of the flexible conductor is pressed against the inner surface of the fitting hole 4 and held, and together with this contact plate 4b. The distal end of the flexible conductor is welded to the inner end of the fitting hole by electron beam welding or the like to form a welded connection portion a. As a result, the fitting hole insertion portion of the flexible conductor 2 and the terminal plate 3 can be welded and connected in a state of being in close contact with each other.

[Effect of device]

As described above, the flexible conductor terminal of the present invention is inserted by inserting both ends of the flexible conductor into the fitting holes of the terminal plate and welding the inner end of the fitting hole and the insertion end of the flexible conductor. Since the welded connection is formed at the innermost end of the hole, it is possible to prevent the flexible conductor tip from blistering, pinholes, and floating at the welded portion during welding as in the past. Since the connection between the terminal board and the terminal board does not require compression connection as in the past, it is possible to prevent heat generation, the reliability of the connection part between the terminal board and the flexible conductor is improved, and the electrical characteristics are stable over the years. It is possible to obtain a flexible conductor terminal of high value.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIGS. 2 and 3 are plan views showing a state in which a tip end portion of a flexible conductor is positioned in a fitting hole of a terminal plate, and FIG. Another embodiment of the present invention 1
FIG. 5 is a plan view showing a partial cross section, FIG. 5 is a plan view showing a further embodiment of the present invention as a partial cross section, and FIGS. 6 and 7 are plan views showing a conventional example. 1: Flexible conductor terminal 2: Flexible conductor 3: Terminal plate 4: Fitting hole a: Weld connection

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hideo Matsubayashi Hideo Matsubayashi 5-1-9 Higashi-Hachiman, Hiratsuka City, Kanagawa Furukawa Electric Co., Ltd. Hiratsuka Plant (56) References: 57-117013 (JP, U) Europe Patent Publication 7546 (EP, A)

Claims (1)

[Scope of utility model registration request] 1. The flexible conductor (2) is inserted into both fitting holes (4) of the terminal plates (3) and (3) so that both ends of the flexible conductor (2) can be connected to the inner end of the fitting hole (4). A flexible conductor terminal provided with a welding connection portion (a) formed by welding the insertion end of the flexible conductor (2).