JP2015141745A - terminal insertion jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig used when an electrical-wire mounted terminal in which a wide terminal is connected to a narrow electric wire terminal is inserted into a terminal housing chamber.SOLUTION: A terminal insertion jig 1 is used to insert, into a terminal housing chamber 32, a terminal 10 in which an electrical contact portion is continuous with the front end of an electrical wire connection portion 3 connected to an electrical wire terminal. A terminal holding portion 2 and an electrical wire holding portion 3 are integrally provided to be continuous with each other in a front-and-rear direction, the front end face of the terminal holding portion 2 is in contact with the rear end face of the electrical contact portion, and the outer shape of the terminal holding portion 2 is set so that the terminal holding portion 2 can be inserted in an electrical connection box or a terminal housing chamber 32 of a connector in which the terminal 10 is inserted. The electrical wire holding portion 3 is designed as an annular frame continuous with the rear end of the terminal holding portion 2. Under the state that the electrical wire connection portion 12 of the terminal 10 is mounted in the terminal holding portion 2 and the electrical wire 20 continuous with the terminal 10 is mounted in the electrical wire holding portion 3, a worker grips the rear side of the electrical wire holding portion 3, inserts the electrical-wire mounted terminal into the terminal housing chamber, locks the terminal 10, and then extracts the terminal 10 from the terminal housing chamber 32.

Description

  The present invention relates to a terminal insertion jig, and more particularly to a jig used when a terminal connected to an electric wire terminal is inserted into a terminal storage chamber of an electrical connection box such as a relay box or a terminal storage chamber of a connector.

  Conventionally, in order to connect to a relay box or a fuse attached to an electric junction box such as a relay box or a junction box mounted on a vehicle such as an automobile, an electric wire is connected to a terminal accommodating chamber (cavity) opened on the outer wall of the electric junction box. There is a case where an operator grips and inserts a terminal connected to a terminal. In that case, as shown in FIG. 9A, the electric wires W are concentrated near the terminal insertion port of the terminal accommodating chamber of the electric junction box 100, and as shown in FIG. It becomes difficult for an operator to hold and insert the terminal 102. As shown in FIG. 9C, when the terminal 102 connected to the terminal is larger than the thin electric wire 101, when the electric wire 101 is gripped at the time of insertion, as shown in FIG. In many cases, buckling occurs on the distal end side of the electric wire 101 so that the wire is bent. This phenomenon is not limited to a relay box or the like, but also occurs when a terminal of a wire end is inserted into a large multipolar connector.

Conventionally, Japanese Patent Application Laid-Open No. 2006-12724 proposes an insertion device 200 for a terminal with electric wire shown in FIG. In this apparatus, a terminal gripping portion 202 that grips a terminal 201 with a wire is operated by a terminal gripping actuator 203 with a built-in cylinder or the like. The main terminal insertion means 205 is connected to a terminal pushing member 206, a terminal pushing member lifting / lowering mechanism 207, and a terminal pushing member advancing / retreating mechanism 208.
In the apparatus, the terminal 201 with electric wire is gripped by the terminal gripping portion 202 and inserted into the connector housing 210.

JP 2006-12724 A

  The terminal insertion device shown in FIG. 10 has a complicated structure and is large in size, so that the cost is high. In addition, if the electric wires are gripped one by one by the terminal gripping portion 202 and operated by the actuator, there is a problem that it takes work time. Furthermore, there is a possibility that the operation of moving the terminal in this state may not be performed with the refracted tip of the terminal pushing member 206 positioned at the portion where the electric wires are densely pressed and pressed against the terminal.

  The present invention has been made in view of the above problems, and provides a terminal insertion jig that can be easily used with a simple structure, not a complicated and large-sized device like the insertion device proposed in Patent Document 1. It is an issue.

In order to solve the above-mentioned problem, the present invention is a terminal insertion jig for inserting a terminal in which a terminal with a continuous electrical contact portion widened at the front end of a wire connection portion connected to a wire terminal is inserted into a terminal accommodating chamber,
The terminal holding part and the wire holding part are provided continuously in the front-rear direction,
The terminal holding part is a concave frame that is open at both front and rear ends and an upper end, and has a size that allows the electric wire connection part of the terminal to be fitted and held, and the front end face to be inserted into the electric contact part. And an outer shape that can be inserted into the terminal accommodating chamber of the electrical connection box or connector into which the terminal is inserted,
The electric wire holding part is an annular frame continuous to the rear end of the terminal holding part,
The terminal holding portion accommodates the electric wire connecting portion of the terminal and the electric wire continuing to the terminal is accommodated in the electric wire holding portion, so that an operator grips the rear side of the electric wire holding portion to Provided is a terminal insertion jig which is inserted into a terminal accommodating chamber and is taken out from the terminal accommodating chamber after the engaging portion of the terminal is engaged with the engaged portion in the terminal accommodating chamber. ing.

The electric wire holding part of the terminal insertion jig of the present invention has a ring-shaped frame or a semi-annular frame that is a semi-annular frame connected to the main body with a hinge connected to the main body, and the electric wire is accommodated in the main body. Can be attached as a cylindrical frame.
The length of the electric wire holding part is 3 cm to 7 cm, preferably 3 cm to 5 cm,
And the inner surface of this electric wire accommodating part is made into the smooth surface, the uneven surface, or the waveform surface.

The electric wire holding part may be an annular frame that can hold the electric wire continuous to the terminal in a straight line shape. However, when the electric wire holding part is a cylindrical shape that can hold the electric wire reliably, the insertion jig is inclined while holding the electric wire. Even if the cable does not fall off. Therefore, it is preferable to make the cylinder open by dividing the cylinder into two, and cover the main body made of the semi-annular frame with a cover in the state of holding the electric wire to make the cylinder frame.
If the inner surface of the electric wire holding part is provided with irregularities or has a corrugated shape, the electric wire can be made difficult to slip and the holding power can be increased. In addition, the holding force can be increased as a smooth surface that is in close contact with the outer peripheral surface of the electric wire.

Further, the length of the terminal holding portion of the terminal insertion jig is equal to the length of the electric wire connecting portion of the terminal, and the electric wire connecting portion of the terminal is fitted in the terminal holding portion. The front end of the terminal holding portion is brought into contact with the rear end of the electrical contact portion that spreads from the front end on both sides in the width direction so that the electrical contact portion of the terminal is advanced when the terminal insertion jig is advanced.
Therefore, when the terminal held by the terminal insertion jig is inserted and locked in the terminal accommodating chamber, the front end of the terminal insertion jig (the front end of the terminal holding portion) is not moved even if the terminal insertion jig is advanced. When the electric wire holding portion is pulled backward while being brought into contact with the electric contact portion of the terminal and stopped, only the terminal insertion jig can be taken out from the terminal accommodating chamber.

  The wire connecting portion of the terminal is a portion provided with a core wire barrel for caulking the exposed core wire by peeling off the insulation coating at the end of the electric wire, and an insulation coating barrel for caulking the insulating coating continuous to the exposed portion of the core wire. is there. Insert the wire connection part consisting of this crimping crimping part by the core wire barrel and the crimping crimping part by the insulation coating barrel that continues from the rear end into the concave terminal holding part of the terminal insertion jig of the present invention from above. , Just to be able to fit inside. In addition, the case where the barrel provided in an electric wire connection part is one is also included.

Wire terminals with electric wires to be inserted by using the terminal insertion jig one wire cross-sectional area is relatively narrow size of the wire of 0.13mm ² ~0.35mm ^2, terminal wire connection that connects to the power line terminal The terminal insertion jig of the present invention is suitably used when the width direction dimension of the electrical contact portion is larger than the width direction dimension of the portion and the terminal is larger than the wire size.

As described above, when the electric wire is thin and the terminal is large, the terminal is likely to buckle due to buckling at the end of the electric wire. Therefore, when the electric wire connecting portion of the terminal and the electric wire of the portion continuing to the electric wire connecting portion are held by the terminal insertion jig of the present invention, it can be held in a straight line, and the occurrence of buckling of the electric wire and occurrence of neck bending of the terminal can be prevented .
And since the terminal insertion jig has a shape in which a terminal holding part slightly larger than the outer shape of the electric wire connection part of the terminal and a wire holding part slightly larger than the outer diameter of the electric wire are continuously provided in the front and rear, the terminal insertion Even if the terminal of the electric wire terminal is set on the jig, it is not narrow and does not become an umbrella height, and it is easy to insert and lock the terminal with electric wire in the terminal accommodation chamber by holding it with the terminal insertion jig even in a densely packed part Can be.

The electrical junction box that is held by the terminal insertion jig and inserts the terminal with electric wire includes a relay box, a fuse box, a junction box, and the like mounted on the automobile. In these electrical connection boxes, the electric wires are often concentrated on the outer surface of the electric wire insertion port of the terminal accommodating chamber, and it is difficult for an operator to hold the electric wire terminal and insert the terminal from the electric wire insertion port. Therefore, by setting a terminal with an electric wire in the terminal insertion jig, the worker grips the rear end of the electric wire holding part of the terminal insertion jig, and passing the terminal insertion jig through the gap between the dense electric wire groups, The terminal can be securely inserted into the terminal accommodating chamber.
When inserting a terminal with an electric wire into the connector, the connector side can be easily moved, so that it becomes easier than inserting the terminal into the terminal accommodating chamber of the electric connection box. However, in the case of a large-sized multipolar connector, since the electric wires tend to be densely arranged on the electric wire insertion opening side of the terminal accommodating chamber, the terminals can be easily inserted by using the terminal insertion jig of the present invention. .

  As described above, the terminal insertion jig of the present invention has a simple shape in which the terminal holding portion that is a concave frame and the wire holding portion that is an annular frame are continuously integrated in the front and rear, and is narrow and small. In a state where the electric wire is held, it can be smoothly inserted between the dense electric wire groups.

The terminal insertion jig of this invention is shown, (A) is a perspective view, (B) is a top view. The state which closed the electric wire holding part of the said terminal insertion jig to the cylindrical frame is shown, (A) is a perspective view, (B) is a left view, (C) is a front view, (D) is a top view. (A) is sectional drawing which shows the inner surface shape of the electric wire holding part of the said terminal insertion jig, (B) (C) is sectional drawing of a modification. (A) is the front view of the electric wire before terminal connection, (B) is the front view of the state which connected the terminal to the electric wire, (C) is a top view of (B). It is a top view in the state where a terminal with an electric wire was held with a terminal insertion jig. It is principal part sectional drawing of the relay box which inserts the said terminal with an electric wire. (A) is sectional drawing which shows the operation | movement which hold | maintains a terminal with an electric wire with the said terminal insertion jig, and inserts in a terminal storage chamber, (B) shows the said terminal insertion jig after inserting and latching a terminal in a terminal storage chamber. It is sectional drawing which shows the operation | movement which pulls out. It is a principal part perspective view which shows the modification of a terminal insertion jig. (A)-(D) are drawings which show the conventional problems. It is a front view of a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the terminal insertion jig 1 is provided by integrally molding a terminal holding portion 2 and an electric wire holding portion 3 that are continuous in the front-rear direction.

  The terminal holding part 2 is a concave frame composed of a bottom wall 2a, left and right walls 2b, 2c, and both front and rear ends and an upper end are open. The length X1, the width Y1, and the height Z1 of the terminal holding portion 2 correspond to the length and width of the electric wire connecting portion 11 of the terminal 10 to be described later, and the height of the electric wire 20 that is crimped to the electric wire connecting portion. 11 is set to a dimension that allows the electric wire connecting portion 11 of the terminal to be held in place. The electric wire holding part 3 is projected from the rear end of the bottom wall 2 b of the terminal holding part 2.

  The electric wire holding part 3 has the front end of the main body 3a formed of a semi-annular frame connected to the rear end of the bottom wall 2b of the terminal holding part. One end edge in the width direction of the main body 3a is connected to a semi-annular frame serving as a lid 3b through a thin hinge 3c so as to be opened and closed. A coupling piece 3d is provided on the other end side of the lid 3b, while a coupling frame 3e for inserting the coupling piece 3d is provided on the other end circle of the main body 3a. The lid 3b is covered with the electric wire 20 in the main body 3a to form a cylindrical frame, and the coupling piece 3d is inserted into the coupling frame 3e and fixed. As shown in FIG. 2 (B), the electric wire holding part 3 has a shape slightly smaller than the concave frame of the terminal holding part 2 in a state where the electric wire holding part 3 is a cylindrical frame.

The inner diameter of the cylindrical frame formed by covering the main body 3a with the lid 3b corresponds to the outer diameter of the inserted electric wire 20 (shown in FIG. 3A), and the electric wire 20 is not rattled in the electric wire holding portion 3. It can be held.
The inner surface of the main body 3a and the lid 3b of the electric wire holding part 3 is a smooth surface as shown in FIG. 3A, and the inner surface is set so that the outer peripheral surface of the insulating coating 22 of the electric wire 20 is in close contact with the outer peripheral surface of the electric wire 20. . In addition, as shown to FIG. 3 (B), the convex part 3t is provided in the inner surface of the main body 3a and the lid | cover 3b, the convex part 3t is pressed on the outer peripheral surface of the insulation coating 22 of the electric wire 20 penetrated inside, and the electric wire It prevents slipping. Further, as shown in FIG. 3 (C), a corrugated protrusion 3m is provided on the inner surface of the main body 3a and the lid 3b, and the apex of the corrugated protrusion 3m is pressed against the outer peripheral surface of the insulating coating 22 of the electric wire 20 inserted inside. Thus, the electric wire may be prevented from slipping.

  The length L1 of the electric wire holding part 3 is 3 cm to 10 cm, preferably 4 cm to 6 cm, and is a length that can be firmly gripped by an operator.

The terminal 10 that is crimped and connected to the end of the electric wire 20 and held by the terminal insertion jig 1 is formed by punching and bending a conductive metal plate. As shown in FIGS. 4B and 4C, the terminal 10 has a shape in which an electric wire connecting portion 12 is connected to the rear end of the front electrical contact portion 11.
In the present embodiment, the terminal 10 is a female terminal connected to the relay, and the electrical contact portion 11 is provided with a female contact portion 11a having a box shape. The rear portion of the electrical contact portion 11 is narrowed by providing slopes 11b and 11b on both side edges in the width direction, and is continuous with the substrate 12a of the wire connection portion 12. The width Y1 of the terminal holding part 2 of the terminal insertion jig 2 is made smaller than the width between the opposing inclinations 11b and 11b, and the front end of the terminal holding part 2 comes into contact with the inclinations 11b and 11b of the electric contact part 11. , Functioning as a stopper against forward movement.

  In the electric wire connection portion 12 of the terminal 10, a pair of core wire barrels 13 project from both side edges in the width direction of the substrate 12a, and a pair of insulation coating barrels 14 project from both side edges in the width direction of the substrate 12a. ing. The length of the wire connecting portion 12 is substantially equal to the length X1 of the terminal holding portion 2 of the terminal insertion jig 1, and is slightly smaller than the width Y1. Further, the height in a state where the core wire barrel 13 is crimped and crimped to the core wire 21 of the electric wire 20 and the insulation coating barrel 14 is crimped and crimped to the insulation coating 22 of the electric wire 20 is the same as the height Z1 of the terminal holding portion 2. It is said. Therefore, when the electric wire connection portion 12 of the terminal is inserted into the terminal holding portion 2 of the terminal insertion jig 1 from above, the bottom surface and the left and right side surfaces of the electric wire connection portion 12 are brought into close contact with the inner surface of the terminal holding portion 2. 12 is held in the terminal holding part 2 without rattling.

Wherein the electric wire 20 to a terminal 10 attached to crimp the terminal, the cross-sectional area of the core wire 21 is relatively narrow size of the wire of 0.13mm ² ~0.35mm ^2. The width of the electric wire connecting portion 12 of the electric terminal 10 to be crimped to the electric wire 20 is 2.6 to 4.6 mm, and the width of the female contact portion 11a of the wide electric contact portion 11 is 5.3 to 7.5 mm. It is. As described above, when the terminal 10 having the wide electrical contact portion 11 is connected to the wire 20 having a relatively small size, buckling occurs on the terminal side of the wire 20, and the terminal 10 is likely to be in a downward neck folded state. . Therefore, it hold | maintains with the said terminal insertion jig 1 of this invention, and inserts in the terminal storage chamber 32 of the relay box 30 shown in FIG.

  The terminal housing chamber 32 of the relay box 30 is continuous with the mounting portion 33 of the relay 50, and a terminal 52 protruding from the main body 51 of the relay 50 is inserted from one end of the terminal housing chamber 32. The other end of the terminal accommodating chamber 32 is an opening 32h for inserting a terminal, and the terminal 10 crimped to the terminal of the electric wire 20 is held by the terminal inserting jig 1 and inserted through the opening 32h. In order to insert the terminal holding part 2 of the terminal insertion jig 1 in which the wire connection part 12 of the terminal 10 is fitted and held in the terminal accommodating chamber 32, the outer shape of the terminal holding part 2 is smaller than the inside of the terminal accommodating chamber 32. And can be easily inserted.

  As shown in FIG. 7B, a lance 33 projects from the inner surface of the terminal accommodating chamber 32, and the lance 33 is engaged with the rear end surface of the female contact portion 11 a of the terminal 10. The terminal 10 inserted in is locked.

  Next, a procedure for holding the terminal 10 connected to the terminal of the electric wire 20 with the terminal insertion jig 1 and inserting it into the terminal accommodating chamber 32 of the relay box 30 will be described.

  First, as shown in FIG. 5, the wire connecting portion 12 of the terminal 10 that is crimped and connected to the electric wire 20 is inserted into the terminal holding portion 2 of the terminal insertion jig 1 from above and held internally. And the electric wire 20 is set to the main body 3a of the electric wire holding part 3, and the lid | cover 3b is closed and it fixes. In this state, the electrical contact portion 11 of the terminal 10 protrudes from the front end of the terminal insertion jig 1, the front end of the terminal insertion jig 1 abuts on the electrical contact portion 11, and the terminal insertion jig 1 is in contact with the terminal 10. Is mounted in a state that is independently prevented from moving forward. And the terminal 10 is hold | maintained linearly with the electric wire 20, and electric wire 20 itself is hold | maintained so that it may not buckle in the front part by the side of a terminal connection.

  Next, as shown in FIG. 7A, an operator grasps the cylindrical electric wire holding portion 3 of the terminal insertion jig 1, and the protruding electrical contact portion 11 of the terminal 10 is stored in the terminal accommodating chamber 32. Insert from the opening 32h. During this insertion, the terminal holding portion 2 of the terminal insertion jig 1 is also inserted into the terminal accommodating chamber 32. When the terminal 3 advances to a predetermined position, the lance 33 is locked to the terminal 10 and is inserted and locked into the terminal accommodating chamber 32 in a state where the terminal 10 is prevented from moving backward and coming out of the opening 32h.

At the time of locking by the lance 33, the wire holding portion 3 of the terminal insertion jig 1 is positioned in the opening 32h of the terminal accommodating chamber 32, and the advancement of the terminal insertion jig 1 is stopped at this position.
As shown in FIG. 7B, after the terminal 10 is locked in the terminal accommodating chamber 32 by the lance 33, only the terminal insertion jig 1 is pulled out by pulling the electric wire holding part 3 to the rear side. At this time, since the volume of the terminal holding part 2 is larger than that of the electric wire 2, the terminal holding part 2 can be easily pulled out through the outer periphery of the electric wire 20 drawn from the opening 32 h of the terminal accommodating chamber 32. After the terminal holding part 2 is pulled out, the lid 3b of the electric wire holding part 3 is opened from the main body 3a, and the terminal holding part 2 is lowered from the electric wire 20 so that the terminal insertion jig 1 is easily removed from the electric wire 20. be able to.

The present invention is not limited to the above-described embodiment, and the wire holding portion 3 of the terminal insertion jig may be formed by only a main body 3a having a semi-annular frame as shown in FIG. 8, and the lid may be omitted. In this case, the operator can hold the electric wire 20 having a half circumference fitted to the main body 3a together with the electric wire holding portion 3 and insert the terminal connected to the electric wire terminal into the terminal accommodating chamber.
Moreover, it is suitably used not only when inserting a terminal with an electric wire into the relay box but also when inserting a terminal with an electric wire into the terminal accommodating chamber of the connector.

DESCRIPTION OF SYMBOLS 1 Terminal insertion jig 2 Terminal holding part 3 Electric wire holding part 3a Main body 3b Cover 10 Terminal 11 Electrical contact part 12 Electric wire connection part 20 Electric wire 21 Core wire 22 Insulation coating 30 Relay box 32 Terminal accommodating chamber 33 Lance 50 Relay

Claims (5)

A terminal insertion jig that inserts a terminal in which an electric contact portion having a wider width at a front end of a wire connection portion connected to an electric wire terminal into a terminal accommodating chamber,
The terminal holding part and the wire holding part are provided continuously in the front-rear direction,
The terminal holding part is a concave frame that is open at both front and rear ends and an upper end, and has a size that allows the electric wire connection part of the terminal to be fitted and held, and the front end face to be inserted into the electric contact part. And an outer shape that can be inserted into the terminal accommodating chamber of the electrical connection box or connector into which the terminal is inserted,
The electric wire holding part is an annular frame continuous to the rear end of the terminal holding part,
The terminal holding portion accommodates the electric wire connecting portion of the terminal and the electric wire continuing to the terminal is accommodated in the electric wire holding portion, so that an operator grips the rear side of the electric wire holding portion to A terminal insertion jig, wherein the terminal insertion jig is inserted into a terminal receiving chamber, and after the locking portion of the terminal is locked to a locked portion in the terminal receiving chamber, the terminal receiving chamber is taken out.   The electric wire holding part is connected to a ring-shaped frame or a semi-annular frame main body with a hinge and a semi-annular frame serving as a lid, and the electric wire is accommodated in the main body so that the lid is covered and fixed as a cylindrical frame The terminal insertion jig according to claim 1, wherein the length of the electric wire holding portion is 3 cm to 7 cm, and the inner surface of the electric wire holding portion is a smooth surface, an uneven surface, or a corrugated surface.   The length of the terminal holding part is the same as the length of the electric wire connecting part of the terminal. With the electric wire connecting part fitted in the terminal holding part, the terminal holding part is on both sides in the width direction from the front end of the electric wire connecting part. The terminal insertion treatment according to claim 1 or 2, wherein a front end of the terminal holding portion is brought into contact with a rear end of the expanding electrical contact portion, and the electrical contact portion of the terminal is advanced when the terminal insertion jig advances. Ingredients. The electric wire of the terminal with electric wire accommodated in the terminal holding part and the electric wire holding part has a core wire cross-sectional area of 0.13 mm ^{2 to} 0.35 mm ² , while the terminal connected to the electric wire terminal has a width direction dimension of the electric wire connecting part. The terminal insertion jig according to any one of claims 1 to 3, wherein the dimension in the width direction of the electrical contact portion is larger.   The terminal accommodating chamber into which the terminal with electric wire is inserted is a terminal accommodating chamber provided in an electrical connection box comprising a relay box, a fuse box or a junction box mounted on an automobile, or a terminal accommodating chamber for a connector. Item 5. The terminal insertion jig according to any one of items 4 to 4.

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