JP3202578B2 - ID terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press contact terminal for press-fitting an electric wire into a press contact groove so that the inner edges of the arm plates on both sides of the press contact groove are cut into the insulating coating of the electric wire and press-connected to an inner core wire. About.

[0002]

2. Description of the Related Art For example, a press contact terminal used for a wire harness of an automobile is pressed by a copper alloy plate having a plate thickness of about 0.3 mm. It is larger than the thickness. However, if the width of the press contact groove is large, there is a possibility that the press contacted wire may come off. Then, as described in Japanese Patent Application Laid-Open No. 47-21687, after the slit processing, the width of the press contact groove is narrowed by stretching.

FIG. 15 shows a press contact terminal of a first conventional example described in the publication.

[0004] The pressure contact terminal 1 is attached to a band-shaped pressure contact plate 2.
A press contact groove 6 extending vertically from the tip is formed, a wide notch 3 for guiding at the time of wire press-fitting is provided at the entrance end, and a core wire accommodation hole 4 is provided at the back end. A press-contact slot 7 is provided therebetween, and a narrow portion 7a formed by stretching is provided in a portion on the core wire accommodating portion 4 side.

[0005] However, if the width of the press contact slot 7 is merely reduced at the time of processing the terminal, the press contact groove 6 is still affected by external force or heat.
When the wire is opened, there is a possibility that the pressure welding connection state of the electric wire becomes loose.

Accordingly, (a) US Pat.
(B) JP-A-53-53792, (c) JP-A-1-204373, (d) U.S. Pat.
No. 09 proposes that after the wire is press-fitted into the press-contact groove, the ends of the arm plates on both sides of the press-contact groove are deformed inward to substantially reduce the width of the press-contact groove. 54-9059
No. 2, (f) U.S. Pat. No. 4,653,830 proposes that the ends of the arm plates on both sides of the press contact groove are deformed inward to intersect.

FIG. 16 (a) shows a press contact terminal 11 of a second conventional example described in US Pat. No. 3,937,549. In the press contact terminal 11, a press contact groove 6 extending vertically from the front end is formed at a widthwise intermediate portion of the press contact plate 2, a notch 3 having a wide width is formed at an entrance side, and a core wire accommodating portion 4 is formed at a back end. After the wire W is press-fitted, the ends of the arm plates 5, 5 on both sides of the press-contact groove 6 are deformed inward so as to close the entrance of the press-contact groove 6.

FIG. 17 (b) shows an example of Japanese Patent Application Laid-Open No. 53-53792.
No. 3, the press contact terminal 12 of the third conventional example, and FIG.
(C) A press contact terminal 13 of a fourth conventional example described in JP-A-1-204373. These press contact terminals 12, 13
In this embodiment, a press-contact groove 6 extending vertically from a front end is formed at a widthwise intermediate portion of the press-contact plate 2, and a core wire accommodating portion 4 is formed at a deep end thereof. After the wire W is press-fitted, the ends of the arm plates 5, 5 on both sides of the press-contact groove 6 are deformed inward so as to close the entrance of the press-contact groove 6.

FIG. 19 shows (d) US Pat.
5 shows a press contact terminal 14 according to a fifth conventional example. In the press contact terminal 14, as shown in FIG. 19 (a), a press contact groove 6 extending vertically from the front end is formed at a widthwise intermediate portion of the press contact plate 2, and a wide notch 3 is formed at an entrance thereof. Then, after press-fitting the electric wire W, as shown in FIG. 19B, the ends of the arm plates 5, 5 on both sides of the press-contact groove 6 are deformed inward, thereby closing the entrance of the press-contact groove 6. The circular hole 21 indicated by the reference numeral 21 is for facilitating the deformation of the arm plate 5.

FIG. 20 shows (e) JP-A-54-90592.
No. 6 discloses a press contact terminal 15 of a sixth conventional example. In the press contact terminal 15, after the wire W is press-fitted into the press contact groove 6,
The ends of the arm plates 5, 5 on both sides of the press-contact groove 6 are deformed inward and crossed by the jig 22.

FIG. 21 shows (f) US Pat. No. 4,653,830.
No. 7 shows a press contact terminal 16 of a seventh conventional example. In the press contact terminal 16, after the electric wire W is press-fitted into the press contact groove 6, the extension pieces 5 a provided on the arm plates 5 on both sides of the press contact groove 6 are rounded inward and cross each other.

[0012]

By the way, in a general electric wire used for a wire harness of an automobile, an inner conductor is formed by twisting a copper wire having a diameter of 0.16 mm to 0.32 mm. . In special cases, the diameter is 0.
Some use wires of 1 mm or less. Therefore, it is extremely easy to separate (fray), and for that purpose, the above-mentioned proposals (a) to (f) have been made.

However, the techniques described in (a) to (d) in which the entrance width of the press contact groove 6 is simply reduced are such that the arm plate 5 is deformed inward until the inner surfaces of the both arm plates 5 strongly hit the core wire Wb. However, the arm plate 5 is returned by springback, and the press contact groove cannot be completely closed. Therefore, when the core wire is a thin wire, the core wire escapes from the entrance gap of the press contact groove,
The whole unity is broken, and the electrical connection becomes unstable. Further, merely narrowing the press contact groove is not enough to hold down the core wire, and in order to prevent the core wire from moving due to external force such as vibration, once tighten the arm plate 5 until the circular end face of the core wire is largely deformed. It is necessary, but this places a considerable burden on the terminals.

Further, by crossing the arm plates 5, the press contact grooves 6 are formed.
Similarly, in the techniques described in (e) and (f), in order to prevent the core wire from moving due to an external force such as vibration, the arm plate 5 is once tightened until the circular cross section of the core wire is largely deformed. This necessitated a considerable burden on the terminals. Further, since the arm plates are simply crossed, if heat or the like acts on the press-contact portion, it may not be possible to prevent the press-connect portion from becoming loose.

In consideration of the above circumstances, the present invention does not loosen the press-contact portion even if external force or heat acts, and can maintain a stable press-connect connection state to the core wire, and furthermore, lightly tighten It is an object of the present invention to provide a press contact terminal that can simply perform the pressure welding.

[0016]

According to a first aspect of the present invention, there is provided a pressure contact plate in the form of a strip, and a wire pressure contact groove extending vertically from a tip end is formed at a widthwise intermediate portion of the pressure contact plate. When the electric wire is press-fitted, the inner edges of the arm plates on both sides of the press-fitting groove bite into the insulation coating of the electric wire, and at the press-fitting terminal for press-fitting connection with the inner core wire, at the end of the arm plate on both sides of the press-fitting groove. ,
When the ends of both arm plates are crossed so as to close the entrance of the press-contact groove, an engaging portion is provided for engaging the ends of the two arm plates with each other.

In this press contact terminal, after the wire is pressed into the press contact groove, the ends of the two arm plates are crossed to engage the engaging portions with each other, so that the press contact groove is opened by the terminal itself. Can be prevented.

According to a second aspect of the present invention, there is provided the pressure contact terminal according to the first aspect, wherein the engaging portion comprises a thickness-direction bending projection formed on an outer edge of each arm plate.

In this press contact terminal, the crossing state of the both arm plates can be maintained by mutually engaging the bent projections provided on the outer edges of the both arm plates.

The invention of claim 3 is the invention of claim 1 or claim 2.
Wherein the plurality of press-connecting plates are formed at intervals in the direction in which the electric wire extends.

In this press contact terminal, since a plurality of press contact plates are provided, a strong and reliable press contact connection state can be obtained.

According to a fourth aspect of the present invention, there is provided the pressure contact terminal according to any one of the first to third aspects, wherein a wire holding portion for holding an outer periphery of the wire is provided at a rear side of the pressure contact plate at an interval. It is characterized by having been done.

In this press contact terminal, by holding the outer periphery of the electric wire on the wire holding portion disposed on the rear side of the press contact plate, it is possible to stably maintain the press contact state of the wire against the press contact plate.

According to a fifth aspect of the present invention, there is provided a pressure plate in the form of a strip, and a wire pressure groove extending vertically from the tip is formed at a widthwise intermediate portion of the pressure plate, and the wire is press-fitted into the pressure groove. Thereby, the inner edges of the arm plates on both sides of the press contact groove bite into the insulation coating of the electric wire, and in the press contact terminal for press contact with the inner core wire, a core wire accommodating hole is formed at the inner end of the press contact groove, At the point of forming the entrance of the core wire receiving hole of the plate, when the core wire receiving hole is contracted by crossing the ends of the both arm plates, engaging claws that bite and engage between the core wires in the core wire receiving hole are respectively provided. It is characterized by having been provided.

In this press contact terminal, after the electric wire is pressed into the press contact groove, the both arm plates are tilted inward, and the engaging claws are engaged with the core wires in the core wire receiving holes to engage. Thus, it is possible to prevent the pressing groove from opening.

According to a sixth aspect of the present invention, there is provided the pressure contact terminal according to the fifth aspect, wherein the core wire includes a part of the core wire when the both engagement claws are bitten between the core wires adjacent to the both engagement claws. It is characterized by having a holding recess.

In this press contact terminal, since the core wire holding recess is provided adjacent to the engagement claw, the engagement claw can be more firmly engaged between the core wires.

According to a seventh aspect of the present invention, there is provided a pressure contact terminal according to the fifth or sixth aspect, wherein a plurality of the pressure contact plates are formed at intervals in a direction in which the electric wire extends.

In this press contact terminal, since a plurality of press contact plates are provided, a strong and reliable press connection state can be obtained.

According to an eighth aspect of the present invention, there is provided the pressure contact terminal according to any one of the fifth to seventh aspects, wherein a wire holding portion for holding an outer periphery of the wire is provided at an interval behind the pressure contact plate. It is characterized by having been done.

In this press contact terminal, by holding the outer periphery of the wire in the wire holding portion disposed on the rear side of the press contact plate, it is possible to stably hold the wire in pressure contact with the press contact plate.

[0032]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a press contact terminal 5 according to a first embodiment of the present invention.
1 is a perspective view showing 0A and the electric wire W, and FIG. 2 is a sectional view taken along the line II-II in FIG.

The press contact terminal 50A is formed by punching and bending a single elastic metal plate such as a copper alloy by press molding.
It has a mating terminal fitting portion 52 having 2a, and has two pressure contact plates 53A and 53B at the rear. Pressing plates 53A, 53B
Are arranged before and after with an interval in the extending direction of the electric wire W, and are erected on the upper surface of the substrate 51 so as to be orthogonal to the electric wire W. The rear pressure plate 53B is formed by bending the rear end of the substrate 51 upward, and the front pressure plate 53A
It is formed by bending a folded plate 54, which is superposed on the upper surface of the substrate 51.

The front and rear pressure contact plates 53A and 53B are of the same shape, have a strip shape, and have an electric wire pressure contact groove 60 extending vertically from the tip at the middle portion in the width direction. At the entrance of the press-contact groove 60, a wide notch 62 for guiding the wire W during press-fitting is provided, and at the back end, a core wire accommodating the core wire Wb of the wire W after the insulation coating Wa has been cut. A hole 63 is provided. A press contact slot 61 is formed between the notch 62 and the core wire receiving hole 63. Then, when the electric wire W is press-fitted into the press contact groove 60, the inner edges of the arm plates 64, 64 on both sides of the press contact groove 60 bite into the insulating coating Wa of the electric wire W, and are connected to the inner core wire Wb by press contact. Has become.

The arm plates 64, 64 on both sides of the press contact groove 60 are provided.
Each of the outer edges of the front end of each arm plate 64 is bent and protruded in the plate thickness direction as an engaging portion that engages with each other when the front ends of both arm plates 64, 64 cross each other so as to close the entrance of the press-contact groove 60. Folded projections 65 and 66 are provided.

In the press contact terminal 50A, as shown in FIGS. 3 to 5, after the electric wire W is press-fitted into the press contact groove 60 (see FIGS. 1 and 2), the ends of the both arm plates 64, 64 are X-shaped. And the edges of the bent projections 65 and 66 are engaged with each other so as to hook each other.

By doing so, it is possible to prevent the press contact groove 60 from being opened by the press contact terminal 50A itself. Therefore, even if external force, heat, or the like acts, the press-contact portion does not loosen, and the press-contact connection state to the core wire Wb can be stabilized. Also, the opening of the press contact groove 60 is adjusted by bending the protrusion 6.
Since the core wire Wb is held down by the engagement of 5, 66, the core wire Wb does not have to be tightened to the extent that its circular cross section is greatly deformed.
The press-connecting terminal 50A can be securely fixed between the two arm plates 64, 64, and the load on the press-contact terminal 50A when deforming can be reduced.

In this example, the press contact plates 53A, 53B
Are provided, a strong press-connecting state can be obtained. However, as in the press-connecting terminal 50B of the second embodiment in FIG. 6, instead of the rear press-connecting plate, a wire holding the outer periphery of the wire is used. Even if the holding plate (electric wire holding portion) 73 is provided, the press-contact state of the electric wire W to the front press-contact plate 53A can be favorably held. In this case, the electric wire holding plate 73 has a circular hole 74 into which the outer periphery of the electric wire fits, an entrance 71 thereof, and a V-notch-shaped guide portion 72.

FIG. 7 shows a press contact terminal 5 according to a third embodiment of the present invention.
FIG. 8 is a perspective view showing OD and the electric wire W, FIG. 8 is a sectional view taken along the line XX of FIG. 7, and FIG. 9 is a view similar to FIG.

The press contact terminal 50D has two press contact plates 53A of the same shape, similarly to the press contact terminal 50A of the first embodiment.
53B. Each of the press contact plates 53A and 53B has an electric wire press contact groove 60 extending vertically from the front end in the widthwise middle portion. At the entrance of the press contact groove 60, a wide notch 62 is provided to guide the electric wire W during press-fitting. At the back end, a core wire accommodation hole 63 for accommodating the core wire Wb of the electric wire W after the insulation coating Wa has been cut is provided. Notch 62 and core wire receiving hole 63
The pressure contact slot 61 is formed between them. Then, when the electric wire W is press-fitted into the press contact groove 60, the inner edges of the arm plates 64, 64 on both sides of the press contact groove 60 bite into the insulating coating Wa of the electric wire W, and are connected to the inner core wire Wb by press contact. Has become. Up to here, it is basically the same as the press contact terminal 50A of the first embodiment.

What is different is that when the core wire accommodating hole 63 is contracted by crossing the ends of the both arm plates 64, 64 at the location where the entrance of the core wire accommodating hole 63 is formed at the back end of the press-contact groove 60, Engaging claws 82 that bite and engage between the core wires Wb in the accommodation holes 63 are provided, and further, adjacent to the engaging claws 82,
The point is that a core wire holding recess 81 for holding a part of the core wire Wb when the engaging claws 82 bite into the core wire Wb is provided. These recesses 81 form the upper end of the core wire receiving hole 63 and have a cross-sectional shape larger than a semicircle.

In this press contact terminal 50D, FIGS.
As shown in FIG. 7, the electric wire W is inserted into the press contact groove 60 (see FIGS. 7 to 9).
After press-fitting, the tips of both arm plates 64, 64 are crossed. Then, as shown in FIGS. 12 and 13, the core wire Wb is moved by the contraction of the core wire accommodation hole 63, and a part of the core wire Wb is held in the core wire holding recess 81, and at the same time, the engaging claw 82 is It penetrates into the gap between the core wires Wb in the accommodation hole 63 and engages with the core wire Wb. Therefore, the press contact terminal 50
D itself can prevent the press contact groove 60 from opening,
Even if external force or heat acts, the press-contact part does not loosen,
It is possible to stabilize the pressure connection state with respect to the core wire. Further, the opening of the press contact groove 60 is adjusted so that the core wire Wb
Therefore, the core wire Wb can be securely fixed between the two arm plates 64 and 64 without tightening the core wire Wb to such an extent that its circular cross section is largely deformed. Strength burden can be reduced.

In the case of this type of press contact terminal, as in the press contact terminal 50E of the fourth embodiment shown in FIG. 14, instead of the rear press contact plate, a wire holding plate 7 for holding the outer periphery of the wire is used.
3 may be provided.

[0045]

As described above, according to the first aspect of the present invention, after the electric wire is pressed into the press contact groove, the ends of the both arm plates are crossed to engage the engaging portions with each other. Accordingly, it is possible to prevent the terminal itself from opening the entrance of the press contact groove, so that the press contact portion is not loosened even when an external force or heat is applied, and the state of the press contact connection to the core wire can be stabilized. . In addition, since the opening of the press contact groove is pressed by the engaging portion, the core wire can be securely fixed between the two arm plates without being tightened to the extent that its circular cross section is greatly deformed, and the load on the terminal can be reduced. it can.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, since the bending projection is provided on the outer edge of the arm plate as the engaging portion, the two-arm plate is reliably formed with a simple structure. Can be kept in an intersecting state.

According to the third aspect of the present invention, in addition to the effects of any one of the first and second aspects of the present invention, a plurality of portions in the longitudinal direction of the electric wire are pressed against the pressure contact plate, thereby providing a strong and reliable pressure contact connection. This has the effect that a state can be obtained.

According to the fourth aspect of the present invention, in addition to the effects of any one of the first to third aspects, a wire holding portion for holding the outer periphery of the wire is provided at an interval behind the contact plate. Therefore, there is an effect that the press-contact state of the electric wire against the press-contact plate can be more stably held.

According to the fifth aspect of the present invention, after the electric wire is pressed into the press contact groove, the ends of the two arm plates are inserted, and the engaging claws are engaged with the core wire in the core wire accommodating hole. Since the entrance of the press contact groove can be prevented from being opened by itself, even if external force, heat, or the like is applied, the press contact portion is not loosened, and the press contact connection state to the core wire can be stabilized.
Further, since the opening of the press contact groove is suppressed by the engagement of the engaging claw with the core wire, the core wire can be securely fixed between the two arm plates without being tightened to the extent that its circular cross section is greatly deformed. Burden can be reduced.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, since the recess for holding the core wire is provided adjacent to the engagement claw, the engagement claw is more firmly attached to the core wire. It can be engaged, and the opening of the press contact groove can be reliably prevented.

According to the seventh aspect of the invention, in addition to the effects of the fifth or sixth aspect, since a plurality of portions of the electric wire in the longitudinal direction are pressed against the pressure contact plate, a strong and reliable pressure connection state can be obtained. This has the effect that it can be performed.

According to the eighth aspect of the present invention, in addition to the effects of any one of the fifth to seventh aspects, an electric wire holding portion for holding the outer periphery of the electric wire is provided at an interval behind the pressure contact plate. So
This brings about an effect that the press-contact state of the electric wire against the press-contact plate can be more stably held.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a press contact terminal of a first embodiment of the present invention together with an electric wire.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 shows a state in which the electric wire is press-fitted into the press-contact groove of the press-contact terminal according to the first embodiment of the present invention, the ends of the arm plates on both sides of the press-contact groove intersect each other, and the entrance of the press-contact groove is closed. It is a perspective view showing a state.

FIG. 4 is an enlarged view of a section IV in FIG. 3;

FIG. 5 is a sectional view taken along the line VV of FIG. 4;

FIG. 6 is a perspective view showing a press contact terminal according to a second embodiment of the present invention.

FIG. 7 is a perspective view showing a press contact terminal according to a third embodiment of the present invention together with an electric wire.

FIG. 8 is a sectional view taken along the line XX of FIG. 9;

FIG. 9 is a view similar to FIG. 10 showing a state in which an electric wire is press-fitted into a press-contact groove of a press-contact terminal according to a third embodiment of the present invention and a core wire is accommodated in a core wire accommodating portion.

FIG. 10 shows a third embodiment of the present invention, in which an electric wire is press-fitted into a press-fitting groove of a press-fitting terminal, and arm plates on both sides of the press-fitting groove are crossed so that an engaging claw protruding from an entrance of a core wire accommodating portion is formed. It is a perspective view showing the state where it was bitten between core wires and was engaged with a core wire.

FIG. 11 is an enlarged view of a portion XIII in FIG. 10;

12 is a sectional view taken along the line XIV-XIV in FIG.

FIG. 13 is an enlarged view of an XV section in FIG.

FIG. 14 is a perspective view showing a press contact terminal according to a fourth embodiment of the present invention.

FIG. 15 is a front view showing a press contact terminal of the first conventional example.

FIG. 16 is a front view showing a press contact terminal of a second conventional example.

FIG. 17 is a front view showing a press contact terminal of a third conventional example.

FIG. 18 is a front view showing a press contact terminal of a fourth conventional example.

19A and 19B show a press contact terminal according to a fifth conventional example, in which FIG. 19A is a perspective view showing a state before wire press contact, and FIG. 19B is a perspective view showing a state after wire press contact.

FIG. 20 is a front view showing a press contact terminal of a sixth conventional example.

FIG. 21 is a perspective view showing a press contact terminal of a seventh conventional example.

[Explanation of symbols]

 50A, 50B, 50C, 50D, 50E Pressing terminals 53A, 53B Pressing plates 60 Pressing grooves 63 Core wire receiving holes 64 Arm plates 65, 66 Bending projections (engaging portions) 73 Electric wire holding portions 75 Depressed portions (engaging portions) 76 Convex portions (Engaging portion) 81 recess for holding core wire 82 engaging claw W electric wire Wa insulating coating Wb core wire

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-205171 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 4/24

Claims (8)

(57) [Claims] An electric wire press-contact groove extending vertically from a front end is formed at a widthwise intermediate portion of the press-contact plate.
When the electric wire is press-fitted into the press-contact groove, the inner edges of the arm plates on both sides of the press-contact groove bite into the insulating coating of the electric wire, and in the press-contact terminal press-connected to the inner core wire, the arm plates on both sides of the press-contact groove An end portion of the arm plate is provided with an engaging portion for mutually engaging the end portion of the arm plate when the ends cross each other so as to close the entrance of the press-contact groove. Terminal. 2. The pressure contact terminal according to claim 1, wherein the engaging portion is formed by a bending projection in a thickness direction formed on an outer edge of each arm plate. 3. The method according to claim 1 or 2, wherein
A plurality of pressure contact terminals, wherein the pressure contact plates are spaced apart in the direction in which the electric wires extend.
A press contact terminal characterized by being formed . 4. The press-contacting end according to claim 1,
A child holds the outer periphery of the electric wire at a distance behind the pressure plate
A pressure contact terminal, wherein a wire holding portion is provided . 5. A pressing plate having a band-like shape, wherein the width of the pressing plate is
A wire pressure contact groove extending vertically from the tip is formed in the middle part
When the electric wire is pressed into the press-contact groove, both sides of the press-contact groove are
The inner edge of the arm plate cuts into the insulation of the wire,
In a pressure contact terminal for pressure contact connection with a core wire, a core wire accommodation hole is formed at an inner end of the pressure contact groove,
At the place where the entrance of the core wire accommodating hole is formed,
When the core wire receiving hole is shrunk by crossing the ends, the core wire
Engagement pawls are provided to engage between the core wires in the holes.
A pressure contact terminal. 6. A pressure contact terminal according to claim 5, wherein said two engaging claws bite between the core wires adjacent to said both engaging claws.
The core wire holding recess to hold a part of the core wire
An insulation displacement terminal characterized by being provided . 7. The pressure contact terminal according to claim 5, wherein
Thus, a plurality of pressure contact plates are provided at intervals in the direction in which the electric wire extends.
A press contact terminal characterized by being formed . 8. The press-contacting end according to claim 5,
A child holds the outer periphery of the electric wire at a distance behind the pressure plate
A pressure contact terminal, wherein a wire holding portion is provided .