JP3019180B2 - Continuity inspection jig for wire terminals - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuity inspection jig for an electric wire terminal capable of simultaneously and reliably inspecting the continuity and shape of a round plate terminal for an automobile connected to a wire harness.

[0002]

2. Description of the Related Art Conventionally, after visually confirming the shape of an LA terminal (a round plate terminal for an automobile) crimped and connected to a branch wire of a wire harness, a continuity test including a crimped portion is performed by connecting to a connector (not shown). I was However, in this inspection, it may not be possible to detect when different terminals are connected.
There was a problem that there were many .

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a continuity inspection jig capable of reliably finding a different terminal in view of the above points.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a terminal insert for inserting an outer diameter portion of a round plate terminal.
And a conductive terminal receiving slidable contacting the round plate terminal.
And the terminal receiving slider is urged toward the terminal insertion portion.
Contact spring and a lead terminal connected to the contact spring.
In the electric wire terminal continuity inspection jig provided, the terminal insertion
The shape of the part matches the front half of the outer diameter part of the round plate terminal
Having an inner peripheral wall, the terminal insertion portion and a penetration facing the terminal insertion portion
A guide plate having a hole, and a ring passing through the through hole
Terminal press head having a pressurizing projection in the shape of a terminal
To the inside diameter of the round plate terminal
An insertion shaft that can enter the pressing projection through the inner diameter portion,
Slidably engages with the insertion shaft facing the pressing protrusion
And the terminal receiving slider.
Claim 1). The terminal holding head is opposite to the terminal holding
The pressing projection is elastically biased in the
Part presses the round plate terminal, and the insertion shaft is
When the terminal press head is in the
It is also effective to be locked by (claim 2).

[0005]

[Action] Insert the round plate terminal into the terminal insertion part of the guide plate.
And insert the outer diameter part against the inner peripheral wall of the terminal insertion part.
Push down the terminal holding head in this state. This allows the terminal
The pressing protrusion of the head presses the round plate terminal to
Press on Ida. Terminal receiving slider is biased by contact spring
Down along the insertion axis while pressed against the round plate terminal
I do. The insertion shaft passes through the connection hole of the round plate terminal. Round plate
The terminal is a lead terminal via the terminal holding head and the contact spring.
Is conducted.

The outer diameter of the round plate terminal is the inner peripheral wall of the terminal insertion portion.
If it does not match (if the round plate terminal is different),
The center between the inner diameter of the round plate terminal and the insertion shaft is misaligned, and the insertion shaft is round.
Even if it hits the template terminal and presses the terminal holding head, the terminal
The receiving slider does not descend and the terminal holding head
I can't push it down. In that state, the lock lever (claim
Item 2) is not locked to the terminal holding head. By these
A different round plate terminal is detected.

[0007]

1 shows a continuity inspection jig for an electric wire terminal according to the present invention.
It shows a reference example . The continuity inspection jig 1 includes a cylindrical insertion shaft 4 through which the connection hole 3 of the LA terminal 2 is inserted, a cylindrical terminal receiving portion 5 on which the insertion shaft 4 is erected, and an outer side from the insertion shaft 4. And a coil spring 7 for urging the lever 6 outward, and a stay 9 for fixing the terminal receiving portion 5 to the inspection table 8.

The contact lever 6 is formed of a conductive metal material in the shape of a plate, has a claw 10 for preventing a terminal from coming off at the distal end, and a notched inclined side 11 following the claw 10. Is pivotally connected to the terminal receiving portion 5 by a conductive spring pin 12, and can be swung in the radial direction of the insertion shaft (the direction of arrow A) by passing through the slit-shaped vertical groove 13 of the insertion shaft 4. The coil spring 7 is inserted into the bottom of the lateral hole 14 of the terminal receiving portion 5,
The upper end of the lever 6 is pressed outward. The contact lever 6 is formed, for example, by using the small screw 15 or the like screwed into the entrance side of the lateral hole 14 as a stopper.
And project slightly parallel to it. A lead 16 is connected to the small screw 15.

The lead wire 16 is connected to a connector inspection jig 18 via a continuity inspection device 17, and a connector section 20 of a wire harness 19 is connected to the connector inspection jig 18. The branch line 21 of the wire harness 19 has the L
The A terminal 2 is connected by crimping.

The connection hole 3 of the LA terminal 2 is
Through the slanted side portion 11 of the contact lever 6.
Is brought into close contact with the connection hole 3 by the bias of the coil spring 7, and the lead wire 16 is connected to the conductive terminal receiving portion 5 through the lever 6.
Is conducted. When the LA terminal 2 is inserted, the claw portion 10 at the tip of the lever is retracted inward against the coil spring 7, and is restored after the terminal is inserted to prevent the terminal 2 from slipping out. Further, the LA terminal 2 is formed by the outer diameter portion of the insertion shaft 4 and the protrusion of the lever 6.
The inspection of the connection hole diameter (inspection of whether or not the terminal is a different terminal) is performed.

FIGS. 2 to 4 show an embodiment of a continuity inspection jig for an electric wire terminal according to the present invention. The continuity inspection jig 24 further improves the adhesiveness with the LA terminal 2 as compared with the previous example, and enables the inspection of the outer diameter portion 2b of the terminal 2. A guide plate 27 having a terminal insertion portion 26 to be inserted, a terminal holding head 30 having an annular pressing protrusion 29 to be inserted into a vertical through hole 28 of the guide plate 27, and an LA terminal 2 in the guide plate 27; the connection hole 3 and the (inner diameter portion) through shaft 31 that can enter into the pressing protrusion 29 through a slider 32 slidably receiving pin engaged conductivity insertion through the shaft 31, the terminal receives a slider A conductive contact coil spring 33 for urging the coil spring 32 upward;
3 and a lead terminal 35 for leading the lead wire 34 out.

The terminal holding head 30 and the guide plate 27 are formed of an insulating resin such as acrylic, and the terminal receiving slider 32 is formed of a conductive material such as brass. The terminal holding head 30
Has a central portion fixed to the distal end portion of the slide shaft 36, and a base block 37 made of insulating resin with respect to the slide shaft 36.
The coil spring 38 is resiliently provided between the side and the upper side, and can be vertically moved while being urged upward. The slide shaft 36
Is passed through the vertical hole 39 of the base block 37 and the lower end is stopped at the vertical hole step 41 by the screw washer 40 as a stopper.

A locking step 42 is formed at the rear end of the terminal holding head 30, and the locking step 42 is
Is locked by a lock lever 43 pivotally supported by the base block 37 in a state where it is lowered against the coil spring 38. The lock lever 43 includes an engaging claw 44 at the distal end with respect to the locking step 42, an operating portion 45 protruding rearward from the claw 44, an intermediate pin shaft support 46, and a spring at the proximal end. And a receiving portion 47. A coil spring 48 is elastically provided between the spring receiving portion 47 and the base block 37.

On the base block 37, the guide plate 27 is bolted to the terminal receiving slider 32 via an upper stopper plate 25 made of insulating resin. The terminal receiving the slider 32 in appearance is formed in a convex shape, has a through hole 32a for inserting shank 31 in the center, it can abut against the upper surface of the upper boss portion 32 b on the lower surface of the LA terminal 2, the lower The upper surface of the flange portion 32c can contact the lower surface of the inner peripheral portion 25a of the stopper plate 25. The inner peripheral portion 25a is notched to a diameter slightly larger than the terminal insertion portion 26.

The terminal insertion portion 26 is provided with a guide plate 27
An insertion space having a front opening 26a is formed in the lower half of the terminal insertion portion 26. The inner peripheral wall 26b of the terminal insertion portion 26 has a round shape of the LA terminal 2 as shown in FIG. 3 (section AA in FIG. 2). The contact portion 2a is formed in a substantially U-shape having a semicircular portion 26c that is the same or slightly larger along the shape of the outer diameter portion 2b of the contact portion 2a.
Then, the insertion shaft 31 is inserted into the connection hole 3 of the terminal 2 with the outer diameter portion 2c of the LA terminal 2 abutting the semicircular portion 26c.

The lower half of the insertion shaft 31 is a base block 3
The terminal receiving slider 32 is fixed to the protruding upper half via a contact coil spring 33 so as to be able to move up and down. The outer diameter of the insertion shaft 31 is
Is set slightly smaller than the inner diameter of the connection hole 3. Guide plate 27 facing above terminal receiving slider 32
Is formed with a large through hole 28 for the pressing protrusion 29 of the terminal holding head 30.

[0017] The in the center of the pressing projection 29 is formed slightly larger diameter through hole 29a from the insertion shaft 31, an annular front end face of the pressing projection 29 is sufficiently a top round contact portions 2a of the LA terminals 2 It has an area that can be pressed against. Annular boss surface of the terminal receiving the slider 32 that contacts the lower surface of the round type contact portion 2a also the pressing
It has the same contact area as the protrusion 29. The lower surface of the terminal receiving slider 32 is in contact with the upper end of the contact coil spring 33,
The lower end of the coil spring 33 is in contact with the lead terminal 35.

The lead terminal 35 is bent in an L-shape, and the substrate portion 35a is placed on the base block 37.
The side plate 35b is fixed to the base block 37 with small screws 49 and connected to the lead wires 34. The lead wire 3
4 is connected to a connector inspection jig 18 on the wire harness side via a continuity inspection device 17 as in the previous example (FIG. 1). The base block 37 is fixed to an inspection table 51 by a frame 50.

Then, as shown in FIG. 4, the LA terminal 2 is inserted into the terminal insertion portion 26 of the guide plate 27, and the terminal holding head 30 is pressed down. If the terminal 2 is regular,
The outer diameter part 2 b of the round contact part 2 a contacts the semicircular inner peripheral wall 26 c of the terminal insertion part 26, and the connection hole 3
And the insertion shaft 31 can be inserted into the connection hole 3. If the LA terminal 2 is a different product, the insertion shaft 31 abuts against the lower surface of the round contact portion 2a in a state where the outer diameter portion 2b is in contact with the inner peripheral wall 26c of the terminal insertion portion 26,
The terminal holding head 30 is not lowered, and it is detected that the product is different. When the terminal 2 is normal, the press head 30 is lowered and locked by the lock lever 43. The operation of the lock lever 43 can be performed manually or automatically.

The annular pressing projection 29 of the terminal holding head 30
Is inserted through the through hole 28 of the guide plate 27 to push down the LA terminal 2 and bring the lower surface of the round contact portion 2 a of the terminal 2 into contact with the conductive terminal receiving slider 32. The distal end of the insertion shaft 31 enters the through hole 29 a of the pressing projection 29. L
The A terminal 2 is sandwiched between the pressing protrusion 29 and the terminal receiving slider 32 under the urging of the contact coil spring 33, and the lower surface of the round contact portion 2a is provided on the boss portion 32b of the terminal receiving slider 32.
Adhere to the upper surface of the Then, the LA terminal 2 is connected via the terminal receiving slider 32, the contact coil spring 33 and the lead terminal 35.
And the lead wire 34 from the lead terminal 35 is conducted.

[0021]

As described above, according to the first aspect of the present invention,
If you check the continuity of the wire terminal,
Part is smaller than specified, or the outer diameter of the round plate terminal is
If the insertion axis is smaller or larger than
Abuts the terminal and is inserted into the pressing protrusion of the terminal holding head
The shaft is not inserted, the pressing protrusion hits the round plate terminal,
Since it is not possible to push down the terminal holding head,
Unusual mold plate terminals or defective round plate terminals
Is reliably detected. Further, according to claim 2
According to the invention, a round plate terminal is used in the continuity inspection of the wire terminal.
If the lock lever is
Cannot be locked to the terminal holding head.
The contractor surely detects abnormalities (for example, different round plate terminals or defective dimensions).
You can know.

[Brief description of the drawings]

FIG. 1 is a front view of a reference example of a continuity inspection jig for a wire terminal according to the present invention , in which main parts are cut away.

FIG. 2 shows one embodiment of a continuity inspection jig for a wire terminal according to the present invention.
It is a longitudinal section showing an example .

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a vertical sectional view of a main part showing a terminal connection state.

[Explanation of symbols]

2 LA terminal (automobile round plate terminal) 2b outer diameter portion 3 connection hole (inner diameter portion) 24 continuity inspection jig 26 terminal insertion portion 26b inner peripheral wall 27 guide plate 28 through hole 29 pressing protrusion 30 terminal pressing head 31 insertion Shaft 32 Terminal receiving slider 33 Contact spring 35 Lead terminal

Claims (2)

(57) [Claims] A terminal insertion for inserting an outer diameter portion of a round plate terminal.
And a conductive terminal receiving slidable contacting the round plate terminal.
And the terminal receiving slider is urged toward the terminal insertion portion.
Contact spring and a lead terminal connected to the contact spring.
In the continuity inspection jig for an electric wire terminal provided, the terminal insertion portion is arranged on the first half side of the outer diameter portion of the round plate terminal.
The terminal insertion portion and the terminal insertion portion.
Guide plate having a through hole facing the portion, and the through hole
A terminal pressing head having an annular pressing projection passing through;
With the tip facing the terminal insertion part, the inside of the round plate terminal
It is possible to enter the pressing projection through the inner diameter part while aligning
An insertion shaft, and a sliding member that slides on the insertion shaft so as to face the pressing protrusion.
A continuity inspection jig for an electric wire terminal, comprising: the terminal receiving slider that is engaged with the electric wire terminal. 2. The terminal holding head is opposite to the terminal holding head.
Is elastically biased in the direction of
The round projection terminal is pressed by the pressing protrusion, and the insertion shaft presses the round plate terminal.
With the terminal holding head inserted into the protrusion,
The electric wire according to claim 1, wherein the electric wire is locked by a bar.
A continuity inspection jig for terminals.