JPH084689Y2 - Pressure contact terminal - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention relates to a pressure contact terminal for press-fitting an uncovered electric wire into a pressure contact blade for connection and conduction.

"Prior Art" As shown in FIG. 3, a pressure contact terminal is provided with a U-shaped slot 1 having an upward opening on a plate portion obtained by cutting off a part of a bottom portion 6 of the terminal to form a pressure contact blade 2. The electric wire 3 is press-fitted into the press contact blade 2, and the covering 4 of the electric wire 3 is formed by the edge portion of the press contact blade 2.
Is generally formed in such a manner that the conductor 5 of the electric wire and the press contact blade 2 are electrically connected. However, since the press-contacting portion composed of the U-shaped slot 1 is structurally weak against the pulling external force of the electric wire, the terminal plate material is bent behind the press-contacting blade 2 and erected on the side of the bottom plate 6. Forming an intrusion barrel 8 (hereinafter, simply referred to as barrel 8), which is wound around the outer circumference of the electric wire 3 by crimping, and a strain relief for supporting the external force of the electric wire 3 to protect the pressure contact portion is provided. Has been.

On the other hand, below the U-shaped slot 1, as shown in FIG. 1 (C), a substrate portion 7 having a height H ₁ from the bottom plate 6 to the bottom of the lot 1 is provided. That is, when a large-diameter electric wire is press-fitted into the slot 1, the base plate portion 7 is deformed so that the U-shaped slot 1 is opened upward and the opening is widened by the press-fitting resistance, and the bottom plate is interlocked with the deformation. 6 causes medium-high plastic deformation as shown by the dotted line in the figure. Therefore, in order to prevent the deformation of the opening of the U-shaped slot 1 and the reduction of the electric wire pressure contact force due to the pressure contact blade 2 due to this, it is provided with the intention of improving the mechanical strength of the lower end portion of the U-shaped slot 1. Height of substrate part 7
H ₁ = width B of the pressure contact blade 2 × 1.0 to 1.5 ”is a necessary shape condition.

"Problems to be solved by the invention" For the pressure contact terminal having the conventional structure described above, see FIG.
Since the base plate 7 having the height H ₁ is present at the base of the character-shaped slot 1, the electric wire 3 pressure-connected to the pressure-contact blade 2 is crimped by the barrel 8 to form a strain relief structure. The bending radius of the electric wire 3 guided to the cutting blade 2 becomes severe, and a reaction force based on the bending stress is generated in the portion immediately before entering the cutting blade 2, so that the press-fitting position of the electric wire 3 in the press-contact blade 2 varies. There is a problem that the posture collapses and the electrical continuity becomes unstable.

The present invention provides a press-connecting terminal that solves the above-mentioned drawbacks of the prior art.

"Means for Solving the Problems" The pressure contact terminal of the present invention for solving the above technical problems is "a pressure contact blade having a base plate portion of a required height between the bottom of the U-shaped slot and the terminal bottom plate, and the pressure contact blade. In the insulation displacement terminal formed at the rear of the pressure contact wire which is wound around the wire by crimping to form a strain relief of the insulation displacement wire, an electric wire receiving protrusion having a "raised bottom" shape is integrally formed under the barrel. The structure is such that "the height of the substrate> the height of the wire receiving convex portion".

[Operation] In the pressure contact terminal of the present invention having the above-described configuration, the wire receiving convex portion is provided below the insulative barrel forming the strain relief, so that between the insulation barrel and the wire receiving convex portion. The electric wire crimped to is relaxed in bending introduced into the press contact blade, and the bending stress is relieved.
Therefore, the conventional harmful reaction force is eliminated, and the pressure contact posture of the electric wire is stabilized.

Further, since the electric wire receiving convex view and the board portion at the lower end of the U-shaped slot have the above-mentioned height relationship, the minimum necessary electric wire bending as a strain relief is secured, and the strain relief function is not likely to deteriorate.

"Example" Hereinafter, a detailed description will be given based on examples. First, referring to FIG. 1 showing a first embodiment of the present invention, a U-shaped slot 1 having an upper opening is provided in a plate material which is caused by cutting off a part of a bottom plate 6, and the U-shaped slot 1 A base plate portion 7 having a required height H ₁ is provided between the bottom and the bottom plate 6 to form the press contact blade 2, and two inboards are formed by bending the terminal plate material to the rear of the press contact blade 2 and standing sideways. In the pressure contact terminal, which is formed by crimping the simulation barrel 8 (hereinafter referred to as the barrel 8) around the outer circumference of the electric wire 3 to form the strain relief of the electric wire 3, a part of the bottom portion 6 below the barrel 8 is cut off to cause "raised bottom". A pair of plate-shaped electric wire receiving convex portions 9A9B are provided, and the upper end of the electric wire receiving convex portion 9A9B is formed into an arc groove 10 for receiving the outer circumference of the coating of the electric wire 3 and the "arc groove 10 Height of bottom from bottom plate H ₂ <Height of substrate 7
H ₁ (the height of the bottom of the U-shaped slot 1 from the bottom plate 6) ”, and the electric wire 3 press-fitted and connected to the press contact blade 2 is crimped and wound into the barrel 8 and the electric wire receiving protrusion. It is sandwiched by the parts 9A9B, and has a structure that functions as a strain relief for the electric wire 3.

The two electric wire receiving protrusions 9A9B of this embodiment are generally arranged so as to correspond to the outer ends 8'of the two barrels 8, and the electric wire sandwiched between the barrel 8 and the electric wire receiving convex portion 9A9B. Three
However, a slight downward bend is formed in the middle of the wire receiving protrusion 9A9B.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the plate-shaped electric wire receiving convex portion 9A of the previous embodiment is used.
Instead of 9B, a bulging electric wire receiving convex portion 9C formed by bending up the bottom plate 6 is formed at the center position of the two winding pieces 8, and its height H ₂ is the same as that of the above-mentioned embodiment. Meet height requirements.
The electric wire 3 is sandwiched between the two barrels 8 and the lower electric wire receiving convex portion 9C at three points, and the sandwiched electric wire 3 is slightly bent.

The above-described operation is achieved in both the above-described embodiments of FIGS. In this embodiment, the electric wire 3 is sandwiched by the barrel 8 and the electric wire receiving projections 9A9B and 9C at three points, and a slight clamping bending occurs in the clamped electric wire. Then, the clamping force is further improved. Therefore, the wire receiving protrusion 9A
Even if the bending of the electric wire 3 guided to the press contact blade 2 is alleviated due to the presence of ~ 9C, the function as the strain relief is covered by the improved clamping force, and the external force of the electric wire 3 can be sufficiently endured.

[Advantage of Invention] As described above, since the press contact terminal of the present invention stabilizes the press contact posture of the wire, there is an effect that the electric performance by the press contact connection is stably improved and the quality is improved.

[Brief description of drawings]

FIG. 1 shows a pressure contact terminal of a first embodiment of the present invention, (A) is a front view thereof, (B) is a sectional view taken along the line AA of (A), and FIG. 2 is a pressure contact terminal of another embodiment of the present invention. Fig. 3, Fig. 3: Shows a conventional pressure contact terminal, (A) is a perspective view thereof, (B) is a front view thereof, and (C) is a BB sectional view of (B). V-shaped slot, 2: crimping blade, 3: electric wire, 4: coating, 5: conductor, 6: bottom plate, 7: substrate part, 8: intrusion barrel, 9A to 9C: electric wire receiving convex part, 10: arc groove

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A pressure welding wire having a base plate portion having a required height between the bottom of the U-shaped slot and a bottom plate, and an insulation barrel formed behind the pressure welding blade, which is wound around the electric wire by crimping. In the pressure contact terminal which forms the strain relief of the above, a wire receiving convex portion having a “raised bottom” shape is integrally formed under the intrusion barrel, and “height of the board portion> height of the wire receiving convex portion” is formed. A pressure contact terminal characterized by a structure in which