JP2002025735A - Chain terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chain terminal, capable of surely restraining a warp of a winding habit remaining in a metallic plate wound into a hoop shape. SOLUTION: A rib 13 is protrusively formed in the lengthwise direction on a carrier 5 extending in the lengthwise direction of the metal plate, to thereby solve the problem caused by the winding habit when wound in the hoop shape. A feed hole 14 for transferring this chain terminal is formed in a half- chip shape on one side edge of the carrier 5, and the width dimension of the carrier 5 is reduced for contributing to reduction of materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain terminal formed from a metal plate wound in a hoop shape.

[0002]

2. Description of the Related Art Conventionally, a connector using a chain terminal 25 in which a plurality of terminals are formed side by side on a carrier is disclosed in Japanese Unexamined Patent Application Publication No.
Japanese Unexamined Patent Publication No. 223941 is known. The chain terminals are formed by pressing a conductive metal plate, and as shown in FIG. 5, the tab terminals 21 extend from the side edges of the carrier 20 extending in a strip shape along the length of the metal plate. Are formed so as to protrude in a comb shape, and their tips are connected to each other by a connecting plate 22 as appropriate. Further, the diode element 23 and the conductive plate 24 are mounted on the adjacent tab terminals 21 by an automatic machine and soldered. Thereafter, although not shown, a housing is molded around the tab terminals 21 and finally, The connector is formed by removing the carrier 20.

[0003]

The chain terminal 2
Since the metal plate before forming 1 is wound in a hoop shape, the metal plate pulled out from the metal plate has a winding habit.
Since it is not possible to solder the element while maintaining such a curl, the metal plate is passed through a pair of curl removing rolls for correcting the curl an appropriate number of times before this. I have. However, since the curvature is particularly large at the end portion of the wound metal plate, even when the metal plate is passed through a curl removing roll pair, the curl may not be sufficiently eliminated. The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a chain terminal capable of reliably suppressing warpage.

[0004]

According to a first aspect of the present invention, there is provided a press-formed conductive metal plate wound in a hoop shape. A chain terminal formed by connecting a plurality of terminals side by side to a carrier extending in a direction, wherein the carrier is formed with a bead portion along a length direction of the metal plate. Is what you do. In the invention of claim 2,
2. The device according to claim 1, wherein the bead portion is disposed at a central portion in a width direction of the carrier, and a feed hole for locking a transfer mechanism for transferring the chain terminal is provided at one side edge of the carrier. , And are notched so as to open to the side.

[0005]

According to the first aspect of the present invention, since the bead portion is formed along the length of the carrier and the rigidity against bending is increased, it is not necessary to correct the curl, and the warp is not required. You can get straight things without any. According to the second aspect of the present invention, since the feed hole is formed to be open to the side, the width of the entire carrier can be reduced as compared with the case where the feed hole is a closed hole. Therefore, the material is reduced.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the chain terminal 3 according to the present embodiment, the housing 1 is molded with the housing in which the chain terminal 3 is incorporated, and the connector 2 is formed, and can be fitted with a mating connector (not shown).

The chain terminal 3 shown in FIG. 1 is formed by pressing a conductive metal plate. As in the conventional case, this metal plate is unwound from a hoop-shaped one and sequentially processed. The chain terminal 3 has a predetermined number of terminals 4 arranged side by side on one side edge of a carrier 5 having a narrow band shape. Each terminal 4 is connected to the carrier 5 by two connecting pieces 6, and the connecting portion between the connecting piece 6 and the carrier 5 is thinned by beating 7 and a terminal from the carrier 5 is formed. 4 is facilitated. Also, a step 8 is provided upward at the tip of both connection pieces 6, and from here on, a mounting piece 10 for mounting the resistance element 9 is provided. Further, the two mounting pieces 10 are connected by a bridging piece 11, thereby preventing the mounting pieces 10 from being opened and deformed at the time of mounting the resistance element 9, which will be described later. However, after finishing as the connector 2, the bridge piece 11 is cut off at the center. A forked connecting portion 12 is provided at a position one step lower than the side of one mounting piece 10.

The ends of the two mounting pieces 10 are provided with overhangs 10A on the sides facing each other, and are opposed to each other with a slight gap. An electric element such as a resistance element 9 is attached between the two mounting pieces 10 in a bridge state.

[0009] The carrier 5 of the present embodiment is provided with a rib 13 for increasing bending rigidity. The ribs 13 are formed by beating out the center of the carrier 5 in the width direction so as to protrude in a substantially mountain shape toward the surface side and along the length direction. In addition, the terminal 4 is provided on both sides of the carrier 5.
On the side where is disposed, feed holes 14 are disposed at regular intervals between the two connection pieces 6 of each terminal 4. The feed hole 14 has a round hole shape as a whole, but is partially cut off (opened at an angle smaller than 180 °) and formed to open to the side. Each feed hole 14
Is designed to mesh with each feed dog 15A of the sprocket 15 provided in the transfer device so as to be intermittently rotatable. A rectangular positioning recess 16 is provided between the terminals 4 on the side edge of the carrier 5 where the feed hole 14 is provided. Each positioning recess 16
Can be locked to a not-shown fixed-side positioning projection when the resistance element 9 is mounted or when the housing 1 to be described later is formed, so that the positional displacement of the chain terminal 3 can be prevented.

The chain terminal 3 of the present embodiment is configured as described above. Next, a process of manufacturing the connector 2 incorporating the chain terminal 3 will be described.

First, the metal plate wound in a hoop shape is pulled out, the terminals 4 are sequentially press-formed, and then the carrier 5 is cut to form a chain terminal 3 as shown in FIG. In the pressing step, the feed teeth 15A of the sprocket 15 mesh with the feed holes 14, and the metal plate is sequentially fed at a predetermined pitch by the intermittent rotation of the sprocket 15. Then, the carrier 5 is cut so as to include a predetermined number of terminals 4, and thereafter, the ribs 13 are formed on the carrier 5 by press working.

By the way, it has already been mentioned that there is a possibility that a curl of a metal plate remains in the chain terminal 3. However, in the present embodiment, since the ribs 13 are provided along the length direction of the carrier 5, the bending rigidity of the carrier 5 is increased,
Therefore, the carrier 5 can be obtained in a straight state without curling in the length direction.

Next, as shown in FIG. 2, a resistance element 9 is bridged between both overhang portions 10A at each terminal 4,
Fixation is performed by soldering. At this time, since the chain terminal 3 is in a straight state without warpage, the resistance element 9 can be correctly attached.

Subsequently, the continuous terminal 4 with the resistance element 9 attached to the mounting portion is fixed to a molding die (not shown) and molded to form the terminal 4, as shown in FIG. A housing 1 is formed around the portion.

Here, the chain terminal 3 is in a straight state, and the warp with respect to the mounting portion to be molded is suppressed. Therefore, when the chain terminal 3 is fixed to the mold, the posture of the mounting portion by this mold is used. Is not corrected. Therefore, it is possible to prevent the soldered resistance element 9 from coming off the mounting portion. After the molding, the connection portion between the carrier 5 and the connection portion of the terminal 4 is cut off, and the bridging piece 11 connecting the both mounting portions is cut off to obtain the connector 2 having the built-in resistance element 9.

As described above, according to the present embodiment, by forming the ribs 13 along the length direction on the carrier 5 of the chain terminal 3, the bending rigidity of the carrier 5 is increased, and the chain terminal 3 is formed.
Can be formed in a straight state without warpage.
Therefore, the resistance element 9 can be mounted in a normal state, and the resistance element 9 does not come off due to the fixing of the mold when the housing 1 is formed.

As a method for increasing the bending rigidity of the carrier 5, it is also effective to bend the side edge on the side where no terminal is provided substantially perpendicularly along the length direction to form a bent edge. . However, in this case, the width dimension is increased by the width of the bent edge, and extra material is required. On the other hand, in the present application, the rib 13 having a slight height is used.
In this case, the width of the carrier 5 may be substantially the same as the conventional one, and the feed hole 14 may be formed in a semi-notched shape so as not to hinder the transfer, so that the carrier 5 has a closed round hole shape. The width dimension of the carrier 5 can be reduced as compared with the case of FIG.

In the present invention, various modifications are possible.
The following modifications are also included in the technical scope of the present invention. In the present embodiment, the terminal 4 to which the electric element is attached has been described, but the present invention is not of a nature that should be limited with respect to the use of the terminal 4. Various cross-sectional shapes of the rib 13 are conceivable, and are not particularly limited to the mountain shape, and may be any of a crab shape, a channel shape, and the like. Further, it is not always necessary to dispose the carrier in the center of the carrier 5, and the carrier 5 may be biased in a direction away from the feed hole 14. The electric element is not limited to the resistance element 9 and the connector 2
Various ones are selected according to the application.

[Brief description of the drawings]

FIG. 1 is a perspective view of a chain terminal.

FIG. 2 is a perspective view showing a state where a resistance element is mounted.

FIG. 3 is a perspective view showing a molded state.

FIG. 4 is a front view showing a transfer state of a terminal.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Housing 3 ... Chain terminal 4 ... Terminal 5 ... Carrier 9 ... Resistor 13 ... Rib 14 ... Feed hole

Claims (2)

[Claims] 1. A chain formed by pressing a conductive metal plate wound in a hoop shape, and formed by connecting a plurality of terminals side by side to a carrier extending in the length direction of the metal plate. A chain terminal, wherein a bead portion is formed on the carrier along a length direction of the metal plate. 2. The bead portion is disposed at a central portion in the width direction of the carrier, and a feed hole for engaging a transfer mechanism for transferring the chain terminal is provided on one side edge of the carrier. The chain terminal according to claim 1, wherein the chain terminal is formed so as to be open toward the side.