JP7401314B2 - Terminal removal jig - Google Patents

Description

The present invention relates to a terminal extraction jig.

A conventional terminal extraction jig includes a grip portion and a pair of insertion rod portions supported by the grip portion. The pair of insertion rod parts are arranged at intervals such that they can be inserted into a pair of lance insertion holes arranged on both sides of the terminal insertion hole of the connector housing. A tapered terminal lifting surface is provided at the tip of each insertion rod portion.

The connector housing in which the terminal removal jig is used has side walls on both sides, a plurality of terminal accommodation chambers arranged in parallel, a plurality of jig insertion holes provided in each side wall, and a terminal removal jig. The housing includes a plurality of lances each of which locks onto a terminal housed in the housing chamber.

Each lance is provided with a pair of lance release ribs that protrude into both adjacent jig insertion holes. In the jig insertion hole at the center position from both end positions, two lance release ribs of either one of the two lances located on both sides are arranged side by side.

Next, the terminal release work will be explained. A pair of insertion rod portions of the terminal removal jig are inserted into the jig insertion holes on both sides of the terminal accommodating chamber in which the terminal to be removed is accommodated. Lift up the pair of lance release ribs with the inserted pair of insertion rods to bring the lance to the terminal release position. In this state, pull out the terminal from the connector housing.

Japanese Patent Application Publication No. 2002-231362

However, in each jig insertion hole, two lance release ribs, one for a lance to be released and the other for an adjacent lance, are arranged side by side. Therefore, if the insertion rod section is inserted with the distal end side opened from the normal position, there is a risk that the adjacent lance release rib will be lifted and the adjacent lance will be released.

Here, the distal end of the insertion rod is made uniformly narrow so that even if the distal end of the insertion rod is inserted with the distal end slightly open from the normal position, the lance release rib of the adjacent lance will not be lifted up. It is possible to do so. However, there is a possibility that the narrow portion on the distal end side of the insertion rod portion may fit between the lance release rib of the lance to be released and the lance release rib of the adjacent lance, making it impossible to lift the lance release rib of the lance to be released.

The present invention has been made in view of the problems of the prior art. Another object of the present invention is to provide a terminal removal jig that can reliably release only the lance that is intended for release.

A terminal extraction jig according to an aspect of the present invention includes an insertion rod part inserted into a jig insertion hole in which two lance release ribs of different lances are arranged side by side, and a tip part of the insertion rod part, a lance lifting surface that has a tapered shape with the tip being the lowest and gradually increasing in height toward the root of the insertion rod portion, and that lifts the lance release rib during the insertion process into the jig insertion hole; A narrow dimension is provided at the distal end of the insertion rod part and on the side surface on the side of the adjacent lance release rib, and the width of the lance lifting surface is the narrowest, and the insertion rod part and a tapered adjoining lance release surface that is inclined outward toward the root of the rod portion to increase the width of the insertion rod portion.

The adjacent lance relief surface is provided only halfway from the lowest end of the lance lifting surface, and the lance lifting surface has a narrow dimension at the portion where the adjacent lance relief surface is provided, and the adjacent lance It is preferable that the portion above the relief surface is provided with a wide dimension.

It is preferable that an adjacent lance lifting prevention surface is provided at the upper end of the adjacent lance relief surface by a step difference between a narrow portion and a wide portion of the lance lifting surface.

It is preferable that the insertion rod portions are a pair provided at intervals, and that the pair of insertion rod portions are inserted into the pair of jig insertion holes provided on both sides of the terminal accommodating chamber.

According to the present invention, it is possible to provide a terminal removal jig that reliably releases only the lance that is intended for release.

The first embodiment is shown, in which (a) is a perspective view of a terminal extraction jig, (b) is an enlarged view of the Ib section in (a), (c) is a sectional view taken along the Ic-Ic line in (b), and (d ) is a side view of the tip of the insertion rod. FIG. 2 is a front view of the connector according to the first embodiment. The first embodiment is shown, in which (a) is a sectional view taken along the line IIIa-IIIa in FIG. 2 in a lance release starting state, and (b) is a sectional view taken along the line IIIb-IIIb in FIG. 2 in a lance release starting state. FIG. 2 is a side view of the connector in a state where the lance has been released, showing the first embodiment; The first embodiment is shown, in which (a) is a sectional view taken along the line Va-Va in FIG. 4, and (b) is an enlarged view of the Vb section in (a). 4A is a sectional view taken along the line VIa-VIa in FIG. 4, and FIG. 4B is an enlarged view of the VIb portion in FIG. 4A. The first embodiment is shown, in which (a) is a sectional view taken along the line IIIa-IIIa in FIG. 2 in a state in which the lance has been released, and (b) is a sectional view taken along the line IIIb-IIIb in FIG. 2 in the state in which the lance has been released. A first embodiment is shown, in which (a) is a perspective view of a main part in a lance release starting state, and (b) is a main part sectional view in a lance release starting state. A first embodiment is shown, in which (a) is a perspective view of a main part in a state in which the lance is being released, and (b) is a sectional view of the main part in a state in which the lance is in the middle of being released. A first embodiment is shown, in which (a) is a perspective view of a main part in a state in which the lance has been released, and (b) is a sectional view of the main part in a state in which the lance has been released. 2nd Embodiment is shown, (a) is a perspective view of a terminal extraction jig, (b) is an enlarged view of the XIb part of (a). 2nd Embodiment is shown, (a) is a perspective view of the principal part in the lance release start state, (b) is an enlarged view of the XIIb section of (a).

Hereinafter, terminal extraction jigs A1 and A2 according to each embodiment will be described in detail using the drawings. Note that the dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.

(First embodiment)
As shown in FIG. 1, the terminal extraction jig A1 according to the first embodiment includes a grip part 1 and a pair of insertion rod parts 2 supported by the grip part 1 and branched from near the base toward the tip. have The distance d1 between the pair of insertion rod portions 2 is set to the distance d2 between the two jig insertion holes 16 arranged on both sides of the connector housing 12.

A lance lifting surface 3 and an adjacent lance release surface 4 are provided at the distal end of each insertion rod portion 2. The lance lifting surface 3 has a tapered shape that is lowest at the tip and gradually increases in height toward the root of the insertion rod portion. The leading edge of the lance lifting surface 3 is at a position where it enters below a lance release rib 18, which will be described below, during the insertion process into the jig insertion hole 16.

The adjacent lance relief surface 4 is provided at the tip of the insertion rod portion 2 and on the side surface on the side of the adjacent lance release rib during the insertion process into the jig insertion hole 16. The adjacent lance relief surface 4 has a narrow dimension t1, which is the narrowest width of the lance lifting surface 3, and gradually slopes outward from the outer edge of the lance lifting surface 3 toward the root of the insertion rod portion 2, so that the insertion rod It has a tapered shape that increases the width of the portion 2.

The adjacent lance release surface 4 is formed into a tapered surface having a constant width b from the lance lifting surface 3 toward the root of the insertion rod portion 2. The adjacent lance release surface 4 has a tapered shape that gradually separates the adjacent lance release rib 18 from the lance release rib 18 intended for release during the insertion process into the jig insertion hole 16.

A side surface continuous from the adjacent lance release surface 4 in the direction of the root of the insertion rod section 2 is formed as a jig opening prevention surface 5 extending in the insertion direction f of the insertion rod section 2.

A tapered insertion hole pick-up surface 6 is provided at the most distal end of each insertion rod portion 2 on the opposite side of the adjacent lance release surface 4. The insertion hole picking surface 6 guides the most extreme portion of the insertion rod portion 2 to the jig insertion hole 16 when the most extreme portion of the insertion rod portion 2 is shifted from the opening position of the jig insertion hole 16.

Next, the connector 11 in which the terminal extraction jig A1 is used will be explained. As shown in FIGS. 2 to 7, the connector 11 includes a connector housing 12 and a plurality of terminals 20 housed in the connector housing 12.

The connector housing 12 is constructed by assembling a front holder 12B to a housing main body 12A. The connector housing 12 is partitioned on both sides by side walls 13 and includes a plurality of terminal accommodating chambers 15 arranged in parallel in the lateral direction, and a plurality of jig insertion holes 16 provided in each side wall 13. There is. The connector housing 12 includes a plurality of lances 17 that respectively engage the terminals 20 accommodated in the respective terminal accommodating chambers 15 . In this embodiment, there are two terminal housing chambers 15, two terminals 20, and two lances 17, and three jig insertion holes 16.

Each lance 17 enters into the locking hole 21 of each terminal 20 and locks the terminal 20. Each lance 17 is provided so as to be movable to a terminal release position where it is released from the locking hole 21 by elastic deformation. Each lance 17 is provided with a pair of lance release ribs 18. The pair of lance release ribs 18 protrude into both jig insertion holes 16 located on both sides of the terminal accommodating chamber 15 .

Two lance release ribs 18 of either one of the two lances 17 located on both sides are arranged side by side in the jig insertion hole 16 in the center from both end positions. In each jig insertion hole 16 at both ends, two lance release ribs 18 and two jig pressing ribs 19 of one of the lances 17 are arranged side by side.

Next, the operation of releasing the terminal 20 will be explained with reference to FIGS. 8 to 10. The pair of insertion rod portions 2 of the terminal extraction jig A1 are inserted into the jig insertion holes 16 on both sides of the terminal accommodating chamber 15 in which the terminal 20 to be released is accommodated. Then, as shown in FIG. 8, the lance lifting surface 3 of each insertion rod part 2 enters below each lance release rib 18, and as shown in FIG. Gradually lift up the lance release rib 18 of.

The adjacent lance release surface 4 of each insertion rod portion 2 displaces the adjacent lance release rib 18 in a direction away from the lance release rib 18 for release purpose as each insertion rod portion 2 advances. This prevents the adjacent lance release rib 18 from being lifted together with the lance release rib 18 intended for release. In addition, when the insertion rod portion 2 is inserted in a state where it is opened from the normal position (close to the adjacent lance release rib side), the adjacent lance release surface 4 releases the lance release rib 18 for the purpose of releasing the adjacent lance. It also has the function of returning to its normal position by the reaction force from the ribs 18.

The jig opening prevention surface 5 is provided with a lance release rib 18 that comes into contact with the adjacent lance release rib 18 after the adjacent lance release surface 4 during the insertion process of each insertion rod portion 2, so that the tip of the insertion rod portion 2 comes into contact with the lance release rib 18 for the purpose of release. Prevents displacement in a direction that is further removed. As a result, as shown in FIG. 10, the insertion rod portion 2 maintains a state in which only the lance release rib 18 intended for release is lifted to the lance release position.

In this way, each insertion rod portion 2 gradually presses only the pair of lance release ribs 18 intended for release, lifts only the lance 17 intended for release, and the lance 17 is displaced to the terminal release position. In this state, the terminal 20 can be pulled out from the connector housing 12.

As described above, the terminal extraction jig A1 according to the first embodiment includes the insertion rod portion 2, the lance lifting surface 3 and the adjacent lance release surface 4 provided at the tip of the insertion rod portion 2. There is. The insertion rod portion 2 is inserted into a jig insertion hole 16 in which two lance release ribs 18 of different lances 17 are arranged side by side. The lance lifting surface 3 has a tapered shape that is lowest at the tip and gradually increases in height toward the root of the insertion rod portion 2, and lifts the lance release rib 18 during the insertion process into the jig insertion hole 16. . The adjacent lance release surface 4 is provided on the side surface on the side of the adjacent lance release rib, and the width of the lance lifting surface 3 is the narrowest, which is the narrow dimension t1, and extends from the outer edge of the lance lifting surface 3 toward the root of the insertion rod portion 2. The insertion rod portion 2 has a tapered shape that gradually inclines toward the outside and widens the width dimension of the insertion rod portion 2.

Therefore, when the insertion rod part 2 is inserted into the jig insertion hole 16, the lance lifting surface 3 of the insertion rod part 2 lifts the lance release rib 18 in the lance release direction. In addition, since the adjacent lance release surface 4 of the insertion rod portion 2 releases the adjacent lance release rib 18 in the direction away from the lance release rib 18 intended for release, the lance 17 is released by lifting only the lance release rib 18 intended for release. Displace to position. As described above, it is possible to provide a terminal extraction jig A1 that reliably releases only the lance 17 intended for release without releasing the adjacent lance 17.

(Second embodiment)
The terminal extraction jig A2 according to the second embodiment is different from that of the first embodiment in that the configuration of the lance lifting surface 3 and the adjacent lance release surface 4 at the tip of each insertion rod portion 2 is different. do.

That is, as shown in FIG. 11, the adjacent lance relief surface 4 is provided only from the lowest end of the lance lifting surface 3 to a midway height of the insertion rod portion 2. The adjacent lance release surface 4 is not provided from the middle height of the lance lifting surface 3 to the uppermost end.

The lance lifting surface 3 is provided with a narrow dimension t1 at a portion where the adjacent lance relief surface 4 is provided, and a wide dimension t2 at a portion above the adjacent lance relief surface 4.

At the upper end of the adjacent lance release surface 4, an adjacent lance lifting prevention surface 7 is provided by a step difference between a portion of the lance lifting surface 3 having a narrow width t1 and a portion having a wide width t2.

The height h1 (shown in FIGS. 11 and 12) from the lower surface of the insertion rod portion 2 to the adjacent lance lifting prevention surface 7 is the height h2 (shown in FIGS. 12).

The other configurations, including the configuration of the connector 11, are the same as those of the first embodiment, so repeated explanation will be omitted. Components having the same configuration as those of the first embodiment in the drawings are designated by the same reference numerals for clarity.

The terminal extraction jig A2 according to the second embodiment is also a terminal extraction jig that reliably releases only the lance 17 intended for release without releasing the adjacent lance 17 for the same reason as the first embodiment. We can provide A2.

The adjacent lance relief surface 4 is provided only from the lowest end of the lance lifting surface 3 to the middle height of the insertion rod portion 2, and the lance lifting surface 3 has a narrow dimension at the portion where the adjacent lance relief surface 4 is provided. At t1, a portion above the adjacent lance relief surface 4 is provided with a wide dimension t2. Therefore, compared to the case where the entire area of the lance lifting surface 3 has the narrow dimension t1, the lifting area of the lance release rib 18 by the lance lifting surface 3 becomes wider, so that the insertion rod portion 2 is prevented from biting into the lance release rib 18. It can be prevented.

At the upper end of the adjacent lance release surface 4, an adjacent lance lifting prevention surface 7 is provided by a step difference between a portion of the lance lifting surface 3 having a narrow width t1 and a portion having a wide width t2. Therefore, even if the adjacent lance release rib 18 is once lifted together with the lance release rib 18 intended for release, the adjacent lance release rib 18 will come into contact with the adjacent lance lifting prevention surface 7 and will be prevented from being lifted any further. . This prevents the adjacent lance release rib 18 from being lifted up to the release position together with the target lance release rib 18. The adjacent lance release rib 18 returns to its original position by flexural return deformation.

Since the adjacent lance lifting prevention surface 7 is provided, it is possible to prevent the adjacent lance release rib 18 from being lifted to the release position even if the width dimension b and taper angle of the lance release surface 4 are not precisely set. Therefore, accuracy in the width dimension b and the taper angle of the lance relief surface 4 is not required, and manufacturability is improved.

The height h1 from the lower surface of the insertion rod portion 2 to the adjacent lance lifting prevention surface 7 is set higher than the height h2 from the bottom surface of the jig insertion hole 16 to the upper surface of the lance release rib 18. Therefore, at the time when both adjacent lance release ribs 18 start to be lifted, the adjacent lance release ribs 18 are located below the adjacent lance lifting prevention surface 7 of the insertion rod portion 2 . Therefore, even if an adjacent lance release rib 18 were to be lifted together with the target lance release rib 18, lifting of the adjacent lance release rib 18 can be reliably prevented.

In each embodiment, there are two terminal accommodating chambers, but there may be three or more terminal accommodating chambers.

Although this embodiment has been described above, this embodiment is not limited to these, and various changes can be made within the scope of the gist of this embodiment.

A1, A2 Terminal extraction jig 2 Insertion rod part 3 Lance lifting surface 4 Adjacent lance relief surface 7 Adjacent lance lifting prevention surface 15 Terminal accommodation chamber 16 Jig insertion hole

Claims (4)

an insertion rod portion inserted into a jig insertion hole in which two lance release ribs of different lances are arranged side by side;
The lance is provided at the tip of the insertion rod, and has a tapered shape that is the lowest at the tip and gradually increases in height toward the root of the insertion rod. a lance lifting surface for lifting the release rib;
A narrow dimension is provided at the tip of the insertion rod part and on the side surface on the side of the adjacent lance release rib, and the width of the lance lifting surface is the narrowest, and the insertion rod is inserted from the outer edge of the lance lifting surface. and a tapered adjoining lance relief surface that is inclined outward toward the root of the part and widens the width of the insertion rod part ;
A terminal extraction jig, wherein the lance lifting surface and the adjacent lance release surface are adjacent to each other . The adjacent lance relief surface is provided only halfway from the lowest end of the lance lifting surface,
2. The terminal extraction jig according to claim 1, wherein the lance lifting surface has a narrow dimension in a portion where the adjacent lance relief surface is provided, and a wide dimension in a portion above the adjacent lance relief surface. Ingredients. 3. The terminal extraction jig according to claim 2, wherein an adjacent lance lifting prevention surface is provided at the upper end of the adjacent lance relief surface by a step between a narrow portion and a wide portion of the lance lifting surface. . The insertion rod portions are a pair spaced apart,
The terminal extraction jig according to any one of claims 1 to 3, wherein the pair of insertion rod portions are inserted into the pair of jig insertion holes provided on both sides of the terminal accommodating chamber.

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