JPH0545906U - Pressure terminal - Google Patents

Abstract

(57) [Summary] [Purpose] Shorten the terminal length of the pressure contact terminal,
In addition, the strength of the press contact blade is increased so that deformation such as center shift of the core wire insertion slit is less likely to occur. [Structure] From the bottom surface 10c of the pressure contact portion 10b to the electrical contact portion 1
2 long side 1 short side cut 10 that extends over bottom surface 10c of 0a
The electric wire insertion portion 10h defined by g is drawn to the connecting portion side of the one short side left on the bottom surface 10i of the press contact portion 10b, and is substantially inverted U.
It is formed by bending it into a letter shape. Slit 10f for core wire insertion
The electric wire insertion portion is formed so that the upper portions of the pair of front and rear pressure contact blades provided with are connected by a bridge portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pressure contact terminal attached to an end of an electric wire, and particularly, to improve the strength of a pressure contact blade for pressure contact with the core wire of the electric wire and to downsize the terminal.

[0002]

[Prior Art]

 Conventionally, there has been provided an insulation displacement terminal integrally formed by punching a conductive metal plate, inserting an electric contact portion in the front part, and inserting a core wire of an electric wire into a slit in the rear part to integrally press contact the core wire. ..

For example, in a terminal 1 shown in FIGS. 5 and 6, which further comprises a coated wire crimping barrel portion at the rear portion of the core wire pressure contact portion, on the bottom substrate in the longitudinal direction, an electric contact portion 1 a is provided at the front portion and a rear portion is provided. A coated wire crimping barrel portion 1b and a core wire pressing portion 1c for pressing the core wire of the electric wire are provided upright at an intermediate portion thereof. The core wire pressure contact portion 1c is provided with a pair of pressure contact blades 1e, 1e standing upright from the bottom, and these pressure contact blades 1e, 1e are provided with core wire insertion slits 1f, 1f cut below the center of the upper end. Has been formed. Further, side walls 1j, 1j for holding the contact piece are formed on both left and right sides of the pressure contact blades 1e, 1e, and protrusions 1d, 1d on both left and right sides of the pressure contact blades 1e, 1e are formed on the side wall portions 1j, 1j. It is locked at 1k and 1k.

As shown in FIG. 7, the terminal 1 is formed by punching a metal plate 1 and then bending it. That is, the rectangular press contact blades 1e and 1e are defined by making two cuts on the long side and the short side on the bottom surface of the core wire pressure contact portion 1c between the electric contact portion 1a and the crimp barrel portion 1b. Each of the press contact blades 1e, 1e is formed by being bent at a right angle along an intermediate connecting portion 1h of two short sides left on the bottom surface. (See Japanese Utility Model Laid-Open No. 60-142463).

[0005]

However, it is necessary to keep the distance t1 between the electric contact portion 1a and the core wire pressure contact blade 1e constant, and the connection distance t2 is provided on the bottom surface of the core wire pressure contact portion 1c to provide the pressure contact blade. There is a problem in that the entire length of the terminal 1 becomes long because it has a developed structure in which 1e and 1e are bent while leaving the intermediate connecting portion 1h. Furthermore, since the press contact blades 1e, 1e only insert the protrusions 1d, 1d into the locking grooves 1k, 1k, the holding force is weak and the wire is easily deformed and crushed when the wire is inserted, or the front and rear core wire insertion slits are inserted. There was also a problem that the center misalignment easily occurred.

An object of the present invention is to solve the above-mentioned problems, to provide a press-contact terminal that can shorten the terminal length, increase the holding strength of the press-contact blade, and prevent deformation and center shift. Is.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a press-contact terminal having an electric contact part at the front part of a board and a press-contact part at the rear part with a pair of front and rear press-contact blades for core wire press contact. A rectangular electric wire insertion part is formed by making a notch of two long sides and one short side extending from the part forming the bottom surface of the pressure contact part to the part forming the bottom surface of the electric contact part, and the center of the electric wire insertion part Long holes are formed in the front and rear direction in the front and back direction, with pores that serve as core wire insertion slits at both ends, and are pulled to the side of the one short side that is left on the opposite side of the electrical contact side and pulled back to the opposite side. Bending both sides of the wire insertion part together with a pressure contact blade having a pair of front and rear slits and an electric wire insertion part having a bridge part that connects the upper ends on both sides of these pressure contact blades. Side walls that hold both the left and right sides of the wire insertion part are provided. There is provided a pressure contact terminal according to claim.

Further, the bridging portion connecting the pair of front and rear press-contact blades is engaged with the engaging groove formed at the upper ends of the left and right side wall portions to enhance the holding strength of the core wire press-contact portion.

It goes without saying that a barrel portion for crimping a covered electric wire can be provided at the rear portion of the pressure contact portion of the core wire, if necessary.

[0010]

[Action]

 According to the crimping terminal of the present invention, the wire insertion part defined by the notch of 2 long sides and 1 short side extending from the bottom surface of the crimping portion to the bottom surface of the electrical contacting portion is left on the bottom surface of the crimping portion. The length is the length cut into the electric contact portion side while holding the electric contact portion and the pressure contact blade at a required interval by pulling them toward the side connecting portion side and bending them in a substantially inverted U shape. The terminal can be shortened.

Further, since the upper portions of the pair of front and rear pressure contact blades are connected by the bridge, the center deviation of the front and rear core wire insertion slits is less likely to occur, and the left and right end surfaces of the pressure contact blade and the bridge portion are both left and right. Since it is held by the wall portion, the strength of the press contact blade is improved.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. As shown in FIG. 1, the pressure contact terminal 10 has an electric contact portion 10a on the front side in the longitudinal direction and a pressure contact portion 10b on the rear side.

In the unfolded state shown in FIG. 2, the terminal 10 has a bottom surface 10c at the center in the width direction of a substantially rectangular plate material, and both sides thereof are bent upward at right angles along fold lines a and b. It is a basic shape of a substantially U-shaped cross section that becomes both side wall portions 10d, 10d.

The electric contact portion 10a is formed into a tubular shape by extending the side wall portions 10d and 10d at the folding lines c and d, and further bending and inwardly overlapping the two side wall portions 10d and 10d. A pressing spring piece portion 10e is provided which is bent backward from the front end portion thereof along the folding line e in the cylinder.

On the other hand, the bottom surface 10i of the pressure contact portion 10b extends to the bottom surface 10c of the electric contact portion 10a to form a cut 10g having two long sides in the longitudinal direction and one short side on the front side. , A rectangular wire insertion portion 10h is defined. The electric wire insertion portion 10h has a valley fold line f, i and a mountain fold line fold line g, h, so that the rear side left on the bottom surface 10i of the pressure contact portion 10b as shown in FIG. 1 is drawn toward the connecting portion (bottom surface 10i) side of one short side thereof and is three-dimensionally bent into a substantially inverted U shape.

In the unfolded state, a long hole 10r that is long in the front-rear direction and has pores that serve as core wire insertion slits 10f, 10f is punched at the center of the wire insertion portion 10h.

Further, the notch 10g serving as the electric wire insertion portion 10h has two long sides, as shown in the figure, in which the center portion in the front-rear direction is recessed on both sides, and a shoulder portion 10m protruding outwardly therebetween, 10m is formed.

Further, locking groove portions 10 j, 10 j are cut out at the upper edge portions of both side wall portions 10 d, 10 d of the pressure contact portion 10 b, and an open retainer is provided at the lower edge portions of the both side wall portions 10 d, 10 d. The claws 10k and 10k are formed.

As shown in FIG. 2, the conductive metal plate is defined into a rectangular shape by a notch 10g extending from the pressure contact portion 10b to the bottom surface 10c of the wire contact portion 10a, and the bottom surface of the pressure contact portion 10b. When the folding is completed, the portion between the folding lines f and g and the portion between the folding lines h and i form a pair of front and rear pressures. The contact blades 10p, 10p are formed, and the portion between the folding lines g and h becomes a pair of left and right bridging portions 10q, 10q connecting the upper ends of the pair of front and rear pressure contact blades 10p, 10p.

Further, the shoulder portions 10m of the bridge portions 10q, 10q are locked by the upper end locking groove portions 10j, 10j of the side wall portions 10d, 10d of the shoulder portions 10m, 10m, and the free end portion 10n of the front portion is opened by the opening pressing claw 10k. It is locked at 10k.

In the above-mentioned pressure contact terminal, the electric wire insertion portion 10h is formed by cutting it from the electric contact portion 10a at the front portion, so that the total length of the terminal 10 is shortened by the cut length to the electric contact portion 10a side. You can

Further, since the upper portions of the press contact blades 10p, 10p of the electric wire insertion portion 10h are integrally connected by the bridging portions 10q, 10q, the center deviation of the front-rear core wire insertion slit 10f is unlikely to occur. Moreover, the bridge portions 10q, 10q are locked in the locking groove portions 10j, 10j of the side wall portions 10d, 10d, and the left and right end surfaces of the press contact blades 10p, 10p abut on the side wall portions 10d, 10d. Therefore, the strength of the press contact blades 10p, 10p is improved.

[0023]

[Effect of the device]

 As is clear from the above description, the pressure contact terminal of the present invention has a wire insertion portion defined by two long sides and one short side cut extending from the bottom surface of the pressure contact portion to the bottom surface of the electrical contact portion. It is formed by pulling it toward the connecting portion side of one short side left on the bottom surface and bending it into a substantially inverted U shape. Therefore, the terminal can be shortened by the amount of the cut on the side of the electrical contact portion, and the terminal can be made compact. Further, since both ends of the pair of front and rear press-contact blades are connected by the bridging portion, the center deviation of the front and rear core wire insertion slits is unlikely to occur, and the side wall portions support the slits, so that the strength is improved. Therefore, it is possible to prevent the pressing blade from being deformed and crushed.

[Brief description of drawings]

FIG. 1 is a perspective view of an insulation displacement terminal of the present invention.

2 is a development view of the terminal of FIG. 1. FIG.

FIG. 3 is a side view of a portion viewed from an arrow A in FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a side view of a conventional pressure welding terminal.

6 is a cross-sectional view taken along the line CC of FIG.

7 is a development view of the terminal of FIG.

[Explanation of symbols]

 10 Terminal 10a Electric contact part 10b Pressure contact part 10c Bottom face 10d Side wall part 10f Slit 10g Notch 10h Electric wire insertion part 10p Pressure contact blade 10q Bridge part

Claims (2)

[Scope of utility model registration request] 1. An electric contact part on the front part of the substrate and a core wire on the rear part.
Pressure welding having a pressure welding part with a pair of front and rear pressure welding blades for pressure welding
In the terminal, electricity is applied from the part that constitutes the bottom of the press-contact part of the punching metal plate.
2 long sides 1 short sides that extend to the part that constitutes the bottom of the air contact part
Notch to form a rectangular wire insertion part,
The core wire insertion sleeves at the front and rear ends at the center of the wire insertion part.
A long hole with a small hole to be
Pull to the connecting part side of the 1 short side left on the side opposite the air contact part side
The slits are brought close to each other and bent into a substantially inverted U shape, and a pair of front and rear slits are provided.
Pressure contacting blades and a rack that continuously connects the upper ends of both sides of these pressure contacting blades.
The wire insertion part with a bridge is provided, and the wire insertion
Hold both sides of the wire insertion part by bending both sides of the part
A pressure welding terminal characterized by having a side wall portion. 2. The pressure contact terminal according to claim 1, wherein the bridge portion connecting the pair of front and rear pressure contact blades is locked in a locking groove formed at an upper end of the side wall portion.