KR910008787Y1 - Electric commector for stranded wires - Google Patents

Abstract

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Description

Twisted pair electrical connector

1 is a perspective view of a terminal at a contact end.

2 is a plan view of the terminal.

3 is a side view of a terminal showing a cut portion;

4 is a partial perspective view of the lead connecting end of the terminal.

5 is a cross-sectional view showing a partial cross section of a flexible lead receiving slot.

FIG. 6 is a cross sectional view taken along line 6-6 of FIG. 3 showing a strong conductor receiving slot.

FIG. 7 is a sectional view taken along line 7-7 of FIG.

The present invention relates to an electrical terminal forming an end of an insulated stranded wire, and more particularly, to an electric terminal having an end of an insulated stranded wire having a plurality of strands and different dimensions.

In terms of economic gain, there is a great demand for a terminal forming an end of an insulated wire without having to peel off the insulator.

Such terminals which peel off themselves are bent toward each other perpendicularly to the channel side so as to form an insulated moving slot forming wall with an axial end irrespective of the channel base to form an insulated conductor receiving slot having a lead inlet away from the channel base between the opposite edges. And a molded article body having sidewalls extending therefrom.

An insulated conductor extending in the axial direction of the channel may be forced into the slot through the conductor inlet such that the edge penetrates the insulator and makes a permanent electrical connection with the conductor core.

However, a disadvantage of such conventional terminals is that the insulator moving slot forming walls are actually rigid so that only conductors of single dimensions can use the terminals to reliably form ends. In addition, the rigidity of the insulator moving slot forming wall prevents the terminal from performing properly to form the ends of the stranded wire that require following to avoid cutting the strands during insertion into the slot.

One prior art for overcoming the above drawbacks is described in US Pat. No. 4,346,955, wherein the free end of the arm extending axially from the sidewall to the insulator moving slot forming wall in a cantilevered fashion, independent of the channel base. Support it.

While this increases the follow-up of the slots to allow small variations in the acceptable twisted pair dimensions, the spring characteristics are so weak that they fit a connection to carry a current that is high enough for many common purposes, such as powering automotive accessories. I can't let you. The thicker material will increase the weight and cost of the terminal poorly, and pre-pressing the insulator moving slot forming wall so that the slot edges are adjacent to each other will limit the area of acceptable conductor dimensions.

The cantilever spring feature is not suitable for satisfying all the requirements for the wide connection of stranded wires while maintaining good current carrying capacity as well as requirements for economical structure and compact dimensions.

According to the present invention, the terminal as described above is inclined inward of the channel when the portion of the insulator moving slot forming wall and the portion of the at least one side wall adjacent to the junction extends toward the insulator moving slot forming wall away from the channel base. It is done. The portion only forms a rigid elastic reinforcement that retracts the insulation moving slot forming wall relatively far with the torsion spring component during lead insertion to expand the slot to adjust the area of the conductor dimensions while maintaining good current transport characteristics in the connection with the lead. do.

Preferably, the range is pushed into the sidewall along a bend line extending upwards toward the free end of the sidewall away from the insulator moving slot forming wall at the junction of the side wall adjacent to the sidewall channel base and the insulator moving slot forming wall. It is limited.

The reinforcement plate provides a spring characteristic that gradually increases the channel base strength at the lead inlet of the slot so that the force acting on the lead gradually increases when the lead is pressed down in the slot.

Preferably, the edge of the insulator moving slot forming wall adjacent the lead inlet is cast such that an insulated through tooth is provided at the ejected trumpet inlet for the lead.

The slot will gradually become narrower as it extends from the lead inlet towards the channel base.

In one embodiment, the panel with another rigid slot is bent such that the other slot extends across the channel axially aligned with the slot, the width of the other slot being in an unexpected lead receiving state. Larger than the slot.

The relative widths of the slots are selected such that both slots electrically connect the conductors when the conductors passing through the predetermined range are inserted into the slots.

Preferably, the panels are pushed outwards from the channel base and laterally received in the cuts in the sidewalls respectively to avoid twisting the panel during insertion of the conductors into the slots, while at the same time maintaining the upright of the panel from the channel base. Have one or more lugs extending.

This makes it possible to obtain an economical and stable structure.

The bend line will extend between the junction of the sidewall and the insulator moving slot forming wall adjacent the channel base and the cutout.

Axial extensions in the sidewalls will be secured together so as not to spread at locations on the side of the panel away from the flexible slots and will face inwardly to provide a contact with a pair of elastic legs that capture the inserted tabs. .

If the side walls are fastened together in a position not joined by the channel base, the terminals can be made of a relatively thin material while retaining sufficient strength at the legs to provide good tab catch. In addition, any tendency for the strong slots to expand during lead insertion is suppressed by contacting the opposite edges of the panel with the sidewalls, which also helps to keep the properties of the flexible slots constant since the sidewalls do not move together.

Preferably, the side wall extensions are secured together by first and second joining strips having bottoms integrally formed with the upper edges of each side wall, and first and second transverse fastening portions extending in the shape of flags adjacent the free ends. . The strips are bent from the bottom and extend toward each other and overlap between the sidewalls, and the first fixing portion is circumscribed around the second coupling strip to capture the second fixing portion between the first fixing portion and the sidewall extending from the first fixing portion. Cheap

According to another concept of the present invention, there is provided an integrally molded molded terminal having a wire connection part and a contact part. The lead connection has a body with a channel base from each opposite longitudinal edge bearing the side wall. The contact includes a pair of resilient legs extending axially from the axial extension of the sidewall, and a panel and sidewall formed by a wire receiving slot that bends upward from the channel base to extend across the channel to isolate the contact from the lead connection. Coupling means extending between the sidewall extensions to secure together.

The slotted panel provides wire connection while preventing any sealant injected into the wire connection after the end of the wire is formed toward the contact.

Preferably the lead connection includes a second lead receiving slot placed on the side of the panel away from the contact.

The terminal includes a lead connecting portion 11 having a channel-shaped body portion 12 having an upstanding side wall portion 22, a contact portion 13 extending from one axial end of the body portion 12, and a body portion 12. Is cast out from a single piece of sheet metal material composed of a clamping ferrule 41 having an axial extension 42 from the other end of the < RTI ID = 0.0 >

It has a channel base 14 supporting the same side walls 15, 15 'from each opposite side from the body. The insulator moving slot forming walls 17, 17 ′ extend from the axial end of each side wall independent of the channel base and between the opposite free edges the conductor receiving slot 19 having the conductor inlet 20 away from the channel base. Bend towards each other perpendicular to the channel side to form in. Each sidewall portion 22, 22 ′ having the insulator moving slot forming wall is bent extending upwards toward the free end of the side wall away from the insulator moving slot forming wall at the junction of the insulator moving slot forming wall and the side wall toward the channel base. It is pushed inward along the lines 23 and 23 '.

The portion is formed with an elastic reinforcement plate that provides a spring property that gradually increases in rigidity as it extends from the lead inlet of the slot to the panel base. The edges 24, 24 ′ of the insulator moving slot forming wall adjacent to the lead inlet are molded to provide insulated through teeth at the radial trumpet inlet.

The panel 25 is swept up in the channel base to extend parallel to the insulator moving slot forming wall between the sidewalls, and has a rigid conductor receiving slot axially aligned with the flexible conductor receiving slot 19 with similar insulated through teeth. 26).

Lugs 27 and 27 'extend from the top of the panel to opposite sides and extend vertically from the top of the sidewalls to the bend lines 23, 23' while vertically cutting 28, 28 'to securely hold the panel during lead insertion. Is accommodated in).

Reinforcement angles 29 and 30 are formed in the channel base 14 and the panel 25 to enhance the strength of the components, respectively.

The tip portion 13 has a pair of tab catching legs 32 and 32 ', which are sidewall extensions extending in the longitudinal direction from the axially extending portions 33 and 33' of the side wall of the body portion.

The side wall extensions 32, 32 'include first and second joining strips 34, 35 having a bottom integrally formed with the top edge of each side wall, and first and second flags extending adjacent to the free end, respectively; Secured together by second fixing parts 36, 37, the joining strips bend at the bottom and extend toward each other and overlap between the side walls. The first fixing piece 36 has a second coupling strip 35 at a position adjacent to the second fixing part 37 to capture the second fixing part 37 between the first fixing part and the side wall extending from the first fixing part. It has an arm surrounding the circumference.

Conventional crimping ferrules 41 with arms staggered in the longitudinal direction are provided as axial extensions 42 of the channel base.

The stationary stop 43 is pushed out of the extension 43 to secure the terminal to the housing.

The terminals are suitable for use in a wide range of conductor standards, for example from 0.5 mm 2 to 1.5 mm 2.

When using a terminal, the teeth of the flexible conductor receiving slot 19 and the strong conductor receiving slot 26 will penetrate the insulation during insertion of the insulated stranded wire into the slot, and the slot edges will be connected to the conductor core over the entire range. Is achieved.

When the conductor is inserted into the slot, the flexible slot will gradually open according to the torsion spring component, penetrate the insulation, and will contact the conductor core without cutting each strand. The edge of the rigid slot tends to cut several strands of the largest conductor, but the weakened state is augmented by the second slot.

The bond strips enhance the strength of the body portion 12 and the strength of the slots 26, and enhance the tab capture force, which makes the terminal economically made from a relatively thin material.

Claims (7)

Insulator moving slot forming walls 17, 17 ′ that bend toward each other perpendicular to the channel axis to form conductor receiving slots 19 having conductor inlets 20 away from the channel base 14 between opposite edges. A terminal with a cast molded body portion 12 having sidewalls 15 and 15 'that extends from the axial end independent of the channel base 14, the insulator moving slot forming wall 17 or 17'. ) And sidewall portions 22 or 22 'of at least one sidewall 15, 15' adjacent to the junction extends toward the insulator moving slot forming wall 17 or 17 'away from the channel base 14. Terminals characterized in that inclined inward. The insulator moving slot forming wall of claim 1, wherein the sidewall portion (22 or 22 ′) is an insulator moving slot forming wall at the junction of the side wall (15 or 15 ′) adjacent the channel base (14) and the insulator moving slot forming wall (17 or 17 ′). Bounded by being pushed into the sidewall 15 or 15 'along a bend line 23 or 23' extending upwards towards the free end of the sidewall 15 or 15 'away from (17 or 17') Terminal characterized in that the. 3. Terminal according to claim 1 or 2, characterized in that the conductor receiving slot (9) is gradually narrowed as it extends from the conductor inlet (20) towards the channel base (14). The panel 25 according to claim 1, wherein the panel 25 having another rigid conductor receiving slot 26 is perpendicular across the channel with the other slot 56 axially aligned with one slot 19. Bent to extend, and the width of the other slot (26) is larger than the one slot (19) in an unexpected conducting state. 5. The relative width of the slots (19, 26) is characterized in that both slots are adapted to electrically connect the conductors when the conductors passing through a predetermined range are inserted into the slots (19, 26). Terminals. 5. The panel 25 is pushed outward from the channel base 14, and the panel 25 remains upright from the channel base 14 while inserting the leads into the slots 19, 26. Terminal, characterized in that it has one or more laterally extending lugs (27, 27 ') respectively received in cuts (28, 28') in the side walls (15, 15 '). The side wall extensions (32, 32 ') of the first and second coupling strips (34, 35) having a bottom formed integrally with the upper edges of the respective side walls (15, 15'), and the free ends. It is held together by first and second transverse fasteners 36, 37 extending in a flag shape adjacent to and the joining strips 34, 35 are bent from the bottom and extend toward each other to extend the side walls 15, 15 ′. Overlapping between the first fixing part 36, the second fixing strip 35 to capture the second fixing part 37 between the first fixing part 36 and the side wall 15 extending from the first fixing part 36. The terminal which surrounds).