JP5680213B2 - Wiring conductor connection structure - Google Patents

Description

  The present invention relates to a connection structure of wiring conductors for electrically connecting a plurality of wiring terminals of an electronic device to each other.

  Conventionally, when one wiring terminal of an electronic device is connected to the other wiring terminal, both terminals are clamped by a male screw (for example, a bolt) and a female screw (for example, a nut) in order to ensure an electrical and mechanical connection. Thus, a structure that is firmly attached is generally used. However, in such a structure, when tightening the male screw, it is important to hold the female screw securely. If the female screw is not detented and positioned correctly, the connection will not be successful and workability will be poor. It was a thing.

  Therefore, in the power supply terminal of Patent Document 1, the electronic component with the conductor member, and the structure including the power supply terminal, the power supply terminal 2 includes the first terminal block 4 and the second terminal block 20, and the first The terminal block 4 is formed with a plurality of slits 6 into which press-fit terminals 12 bent in a U shape are inserted, and insert-molded female screws 8. The back wiring board (BWB) 44 has a conductor pattern for supplying power and a plurality of through holes connected to the conductor pattern. The press fit pin 14 of the press fit terminal 12 is connected to the through hole of the BWB 44. The power supply terminal 2 is mounted on the BWB by inserting it into the hole. The external wiring can be firmly fixed to the first terminal block 4 by screwing the male screw 16 with the male screw 8 with the crimp terminal 18 attached to the tip of the external wiring interposed therebetween.

JP 2009-43730 A

  In the structure provided with the conventional power supply terminal, the insert-molded female screw is required to have positioning accuracy, and it has been a problem to improve component dimensional accuracy and mounting accuracy. Furthermore, although the female screw itself is securely fixed, there is a problem in workability, and there is a problem that work cost increases due to an increase in work time.

  The present invention has been made in order to solve the above-described problem, and when a plurality of wiring terminals are electrically connected to each other, alignment work can be facilitated and work time can be shortened. It aims at providing the connection structure of a wiring conductor.

In order to solve the above problem, the connection structure of the wiring conductor of the present invention is a connection structure for electrically connecting the wiring conductors of the joint surface each other of the wiring terminals of the wiring conductors at the fastening member, said plurality in which at least one hook-like projection is provided the toward the other wiring terminal on the joint surface edge portion of the wiring terminal, pressing the other wire terminals to each other by the hook-shaped projection, characterized by constraining is there.

  According to the connection structure of the wiring conductor of the present invention, when the wiring terminals are connected to each other by providing the hook-shaped projections on at least one of the edge portions of the wiring terminals, the alignment mechanism is simplified and the assembly workability is improved. In addition, the dimensional accuracy of the wiring terminals is not required and can be provided at a low cost.

It is a schematic perspective view which shows the principal part of the connection structure of the wiring conductor which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the connection structure of the wiring conductor in FIG. FIG. 2 is a top view of a wiring conductor connection structure in FIG. FIG. 2 is a partial view of a joint surface portion of a wiring terminal in FIG. 1. It is a schematic perspective view which shows the principal part of the other embodiment of the connection structure of the wiring conductor which concerns on Embodiment 1 of this invention. It is a schematic perspective view which shows the principal part of the connection structure of the wiring conductor which concerns on Embodiment 2 of this invention. FIG. 7 is a top view of a connection structure of wiring conductors in FIG. It is a schematic perspective view which shows the principal part of the other embodiment of the connection structure of the wiring conductor which concerns on Embodiment 2 of this invention.

  Hereinafter, a connection structure of wiring conductors according to an embodiment of the present invention will be described with reference to FIGS.

Embodiment 1 FIG.
FIG. 1 is a schematic perspective view showing a main part of a connection structure for wiring conductors according to Embodiment 1, and FIG. 2 is an exploded perspective view of the connection structure for wiring conductors. FIG. 3 is a top view of the wiring conductor connection structure and a cross-sectional view taken along the line AA. FIG. 4 is a partial view of the joint surface portion of the wiring terminal.

  As shown in FIG. 1 and FIG. 2, in the wiring conductor connection structure 1 according to the first embodiment, a casing 2 of an electronic device and a plate-like wiring that is insert-molded in the casing 2 with resins 2a and 2b. A conductor 3 (hereinafter referred to as a wiring conductor), a bonding surface (hereinafter referred to as a wiring terminal surface) 3a of a wiring terminal formed by bending the tip of the wiring conductor 3, and the wiring terminal surface 3a; A recess 2c formed in the housing 2 for storage, a hook-like projection 3b formed by bending at the edge of the wiring terminal surface 3a, and wiring of the external wiring terminal 4 that is opposed and fixed to the wiring terminal surface 3a A terminal surface 4a, a crimping portion 4f for joining the flexible wiring 5 to the external wiring terminal 4, a bolt (male screw) 6 and a hook-shaped projection 3b which are fastening members for joining the wiring terminal surface 3a and the wiring terminal surface 4a. Nut (female ) And 7, it is constituted by. In addition, the housing 2 is formed with a recess 2d for accommodating the nut 7. In the exploded view of the wiring conductor connection structure 1 shown in FIG. 2, for the sake of convenience, only the main part of the housing 2 according to the present invention is shown, and other wiring conductors and structures are omitted. In addition, although the housing 2 in which the wiring conductor 3 is embedded is separately shown for convenience in the upper resin 2a and the lower resin 2b, the resin 2a, 2b actually wraps the wiring conductor 3 by insert molding. Since the housing 2 is formed on the two, they cannot be distinguished.

  Next, the operation and effect of the wiring conductor connection structure according to the first embodiment will be described. As shown in the schematic perspective view of FIG. 1 and the exploded perspective view of FIG. 2, the wiring terminal surface 4 a of the external wiring terminal 4 to which the flexible wiring 5 is joined by the crimping portion 4 f is exposed from the housing 2. The bolt 6 is abutted against the surface 3a, and the bolt 6 is passed through the joint hole 4h of the wiring terminal surface 4a and the joint hole 3h of the wiring terminal surface 3a, and is screwed with the nut 7 previously disposed in the recess 2d. The terminal surface 3a is joined. At this time, the nut 7 is restrained to such an extent that the nut 7 is lightly pressed by the hook-shaped protrusion 3b of the wiring terminal surface 3a. As a result, the nut 7 is roughly positioned, the rotation of the nut 7 when screwed with the bolt 6 is prevented, and it is not necessary to hold down the nut 7 when the wiring terminals are joined together, and work efficiency is improved. The wiring conductor 3 and the flexible wiring 5 can be electrically connected. FIG. 3 shows a top view (a) and an AA cross-sectional view (b) when connection is completed.

  1 to 3, the wiring terminal surface 3a of the wiring conductor 3 is accommodated in the recess 2c of the housing 2 with a gap, but the joint portion of the external wiring terminal 4 with the wiring terminal surface 4a is not provided. Except for this, a structure in which an insert mold is fixed with a resin may be used. The recess 2d that accommodates the nut 7 formed in the housing 2 has a gap in which the nut 7 can be inserted and moved. Further, as described above, the hook-shaped protrusion 3b only needs to be able to be pressed lightly without the nut 7 protruding from the recess 2d. Since strength is not required, a narrow one can be used, and processing is easy. . Further, when the bolt 6 is passed through the joint hole 4h and the joint hole 3h and screwed into the screw hole of the nut 7, the screw hole of the nut 7 and the bolt 6 need to be aligned. Is not fixed by the recess 2d and is in a loose fitting state, so that when the bolt 6 is inserted, the nut 7 can be finely adjusted so that the center of the nut 7 comes to a predetermined position, and the bolt 6 is inserted into the screw hole of the nut 7 Thus, the arrangement position accuracy of the nut 7 is unnecessary.

  Moreover, as shown in FIG. 4, the notch 3k is provided in the edge part of the wiring terminal surface 3a of the root part in which the hook-shaped protrusion 3b was formed. This makes it easy to bend the hook-shaped protrusion 3b and prevents the wiring terminal surface 3a and the hook-shaped protrusion 3b from being distorted during processing.

  In the description of the first embodiment, the case where the wiring conductor is embedded in the housing has been described. However, as shown in another embodiment of the first embodiment in FIG. The present invention can also be applied when the wiring conductor 13 is disposed on the wiring board 12. Here, the connection is made between the wiring terminal surface 13 a of the wiring conductor 13 processed by providing a gap between the wiring board 12 and the external wiring terminal 4. As in the case of the first embodiment, the edge of the wiring terminal surface 13a is provided with hook-like protrusions 13b on the front and rear (the rear hook-like protrusion 13b is hidden by the external wiring terminal 4), and the nut 7 Lightly pressed by these hook-like projections 13b. Thereafter, the bolt 6 is screwed to the nut 7 and fastened, whereby the wiring conductor 13 of the wiring board 12 and the external wiring terminal 4 are electrically connected. Here, it is sufficient that the wiring conductor has a thickness that can be bent independently, and it is particularly necessary to apply a large current, and it is effective to apply to a wiring conductor of a thick power supply system.

  As described above, in the connection structure of the wiring conductor according to the first embodiment, the hook-like protrusion is formed on the edge of the wiring terminal surface of the wiring conductor in the connection between the wiring terminal of the wiring conductor and the external wiring terminal crimped with the flexible wiring. When the bolt is inserted into the nut and screwed into the nut, the positioning accuracy of the nut is not required, and the work of fastening and joining becomes easy. There is a remarkable effect that the work efficiency is improved and the cost of parts and the work cost can be reduced.

Embodiment 2. FIG.
FIG. 6 is a schematic perspective view showing a main part of the connection structure of the wiring conductor according to the second embodiment. FIG. 7 is a top view of the connection structure of the wiring conductor and a cross-sectional view taken along the line BB. The difference from the wiring conductor connection structure of the first embodiment is that one is a wiring terminal formed on the wiring conductor of the casing or the wiring board and the other is a wiring terminal of the external wiring terminal to which the flexible wiring is connected. In contrast to connecting these wiring terminals, the second embodiment is to connect the wiring terminals formed on the wiring conductors of the two wiring boards.

  As shown in FIG. 6, in the wiring conductor connection structure 20 of the second embodiment, wiring conductors 23 and 33 are disposed on the two wiring boards 22 and 32, respectively. Wiring terminal surfaces 23a and 33a formed by bending at a right angle are provided at the front end portion. In addition, hook-like projections 23b and 33b are formed on the edge portions of the wiring terminal surfaces 23a and 33a, respectively, and when the wiring terminal surface 23a and the wiring terminal surface 33a are abutted and joined, these hook-like projections 23b are formed. , 33b are fitted to each other, the wiring terminal surface 23a and the wiring terminal surface 33a are pressed and restrained so that the positioning is performed. Normally, when the wiring terminal surface 23a and the wiring terminal surface 33a are joined, it is difficult to position the both without using a predetermined jig, but hook-like projections are formed at a plurality of positions on the edge of the wiring terminal surfaces 23a and 33a. Positioning can be easily performed by providing 23b and suppressing movement of the other party by the hook-shaped protrusion 23b. Next, the bolt 6 is passed through a joint hole (hidden in the figure) of the wiring terminal surface 23a and screwed into the female screw 8 formed by burring on the wiring terminal surface 33a, so that the wiring terminal surface 23a and the wiring terminal surface 33a are engaged. And join. As a result, as in the case of the first embodiment, connection between the wiring conductors arranged on the wiring board can be performed. Here, the case where the hook-like protrusions 23b and 33b are extended by bending from the edges of the wiring terminal surfaces 23a and 33a has been described, but the protrusions 23b and 33b are extended only from one wiring terminal surface. There may be.

  As described above, it is possible to suppress all movements of both connected by a plurality of hook-shaped projections, and without using a jig, there is no need for high-precision positioning, and assembly workability can be improved. it can.

  In the description of the second embodiment, the case where the wiring conductor is disposed on the wiring board has been described. However, in another embodiment of the second embodiment shown in FIG. The wiring terminal surfaces 43a and 53a are bent into a convex shape so as to be parallel to the wiring conductors 43 and 53. Here, the connection is made between the wiring terminal surface 43 a of the wiring conductor 43 of the wiring board 42 and the wiring terminal surface 53 a of the wiring conductor 53 of the wiring board 52. Two hook-like protrusions 43b are provided at the edge of the wiring terminal surface 43a, and the nut 7 is lightly pressed by one hook-like protrusion 43b. Further, when the other hook-shaped protrusion 43b and the edge of the wiring terminal surface 53a are in contact with each other, the wiring terminal surface 53a is pressed and restrained so that the positioning and fixing are performed. Thereafter, the bolt 6 is screwed onto the nut 7 and fastened, whereby the wiring conductor 43 of the wiring board 42 and the wiring conductor 53 of the wiring board 52 are electrically connected.

  Further, FIG. 8 illustrates the case where the wiring terminal surfaces 43a and 53a are bent into a convex shape so as to be parallel to the wiring conductors 43 and 53, but one wiring terminal surface is perpendicular to the wiring conductor. When the wiring boards are arranged at a right angle, the wiring conductors can be electrically connected. Further, even when one wiring conductor is disposed on the housing of the electronic device and the other wiring conductor is disposed on the wiring board, they can be connected to each other.

  In addition, as a female screw used in the second embodiment, a nut is used as in the first embodiment, or, as described above, a threading process is performed directly on the wiring terminal surface by burring, and a helicate screw is used. Any method such as embedding may be used.

  Thus, in the connection structure of the wiring conductor according to the second embodiment, when connecting the wiring conductors arranged on the housing of the electronic device or the wiring board, the edge of the wiring terminal surface of the wiring conductor is hook-shaped. A projection is formed, and the other wiring terminal surface is pressed and restrained by this hook-shaped projection, and the bolts and nuts that are fastening members are screwed together. Therefore, the positioning accuracy between the wiring terminal surfaces is required. Therefore, the work of fastening and joining is facilitated, the work efficiency is improved, and there are remarkable effects that the cost of parts and the work cost can be reduced.

  In the above embodiment, the case where the wiring terminal surfaces are joined and electrically connected by screwing with bolts and nuts has been described. However, the present invention is not limited to the case of fastening by screwing. Even when they are joined together, they can be used as temporary fixing until welding. Furthermore, even when connecting with another component such as a clip, it can be used as temporary fixing in the same manner. Furthermore, by making the tip part of the hook-like protrusion into a fork shape that is divided into a plurality of branches, the number of points that come into contact with the other edge of the wiring terminal surface can be increased and firmly fixed.

  Also, within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

  Moreover, in the figure, the same code | symbol shows the same or an equivalent part.

1, 10, 20, 40 Wiring conductor connection structure 2 Housing 3, 13, 23, 33, 43, 53 Wiring conductors 3a, 13a, 23a, 33a, 43a, 53a Wiring terminal surfaces 3b, 13b, 23b, 33b, 43b Sponge projection
3k Notch 4 External wiring terminal 4a Wiring terminal surface 5 Flexible wiring 6 Bolt 7 Nut 8 Burring female thread 12, 22, 32, 42, 52 Wiring board

Claims (7)

A wiring conductor connection structure for electrically connecting joint surfaces of wiring terminals of a plurality of wiring conductors with a fastening member,
It said plurality of at least one hook-shaped projection toward the other wiring terminal on the joint surface edge portion of the wiring terminal is provided, holding the other wire terminals to each other by the hook-shaped projection, characterized by constraining Wiring conductor connection structure. The wiring conductor connection structure according to claim 1, wherein the hook-shaped protrusion has a fork shape in which a tip portion is divided into a plurality of branches. Wherein at least one of the wiring conductor, the connection structure of the wiring conductors according to claim 1 or claim 2, characterized in that it is integrally molded to the housing of the electrical device. Wherein at least one of the wiring conductor, the connection structure of the wiring conductors according to claim 1 or claim 2, characterized in that it is formed in the wiring board. The wiring conductor connection structure according to any one of claims 1 to 4 , wherein the fastening member is a bolt and a nut. The wiring conductor connection structure according to any one of claims 1 to 5 , wherein the hook-shaped protrusions are formed by bending from a joint surface edge portion of the wiring terminal. The connection structure for a wiring conductor according to claim 6 , wherein a notch portion is provided in a joint surface edge portion of the wiring terminal of the root portion where the hook-shaped protrusion is formed.

Images