JP2020126756A - Terminal removal jig - Google Patents

Abstract

A terminal extracting jig capable of easily extracting a terminal from a terminal accommodating chamber without damaging the terminal. A resilient locking piece (32) having a locking projection (32a) for locking a terminal (40) in a terminal accommodating chamber (31) of a connector housing (30) and a distal projection (32b) to which a force for bending in a locking release direction is applied. is a portion to be inserted through the jig insertion space 33, and in the insertion posture into the jig insertion space 33, the terminal side surface 20a, which is the surface on the terminal 40 side, recedes toward the back surface 20b of the terminal side surface 20a. An unlocking inclined surface 21 that bends the elastic locking piece 32 in the unlocking direction by being slidably contacted with the tip projection 32b, and a locking unlocking inclined surface 21 that prevents the tip 20c from coming into contact with the terminal 40. The insertion portion 20 includes a protrusion 22 projecting from the terminal side surface 20a. [Selection drawing] Fig. 4

Description

The present invention relates to a terminal removing jig used to unlock a terminal locked in a terminal housing chamber by an elastic locking piece.

Conventionally, a terminal accommodated in a terminal accommodating chamber of a connector housing is locked by an elastic locking piece in order to prevent separation from the terminal accommodating chamber.
When pulling out the terminal locked in the terminal accommodating chamber by the elastic locking piece in this manner, the elastic locking piece needs to be bent in the locking release direction, and therefore a terminal removal jig is used (for example, Patent Document 1). 1).

In the terminal removal jig described in Patent Document 1, the inclination angle of the pressing surface with respect to the pressing direction of the elastic locking piece is increased toward the upper end side of the pressing surface.
In the terminal removal jig described in Patent Document 1, the distance between the lower end and the upper end of the pressing surface in the front-rear direction is suppressed to be small, so that the retaining projection and the pressing surface are mutually separated even if the elastic locking piece is bent most. It does not interfere.

JP, 2008-270026, A

However, when the terminal removal jig 100 is obliquely inserted into the connector housing 300 as shown in FIG. There is a problem that the terminal 200 may be damaged by coming into contact with the terminal 200.
Further, in the terminal extraction jig 100 described in Patent Document 1, as shown in FIG. 6B, when the terminal 200 is pulled out from the inside of the terminal accommodating chamber 310, when the terminal 200 is tilted, the tip of the elastic locking piece 320. Since the terminal 200 is hooked on the terminal 200, there is a problem that it is difficult to pull out the terminal 200.

The present invention has been made in view of the above, and an object of the present invention is to provide a terminal extraction jig that can be easily pulled out from a terminal storage chamber without damaging the terminal.

In order to solve the above-mentioned problems and achieve the object, the terminal extraction jig according to the present invention is applied with a locking projection that locks a terminal in the terminal housing chamber of the connector housing and a force that bends in the locking release direction. Is a portion to be inserted through the jig insertion space toward the elastic locking piece having a tip protruding portion, and from the terminal side surface that is the terminal side surface to the back surface of the terminal side surface in the insertion attitude into the jig insertion space. A locking release inclined surface that is formed as an inclined front end surface that recedes toward the front end, and is slidably contacted with the front end protruding portion to bend the elastic locking piece in the locking release direction, and the front end contacts the terminal. It is characterized by having an insertion part provided with a convex part protrudingly provided on the side surface of the terminal so as to prevent this.

Further, the terminal removing jig according to the present invention is characterized in that, in the above-mentioned invention, the convex portion is arranged around a distal end of the insertion portion.

Further, in the terminal removal jig according to the present invention, in the above invention, the insertion portion is an inclined surface formed on the back surface so as to reduce the thickness toward the locking release inclined surface. Is inserted to the insertion completion position of the jig insertion space, a locking piece storage inclined surface for guiding the tip end protruding portion to the back surface side is formed.

In the terminal extraction jig according to the present invention, while the elastic locking piece is bent in the releasing direction by the locking release inclined surface, the convex portion projecting on the side surface of the terminal has the tip of the insertion portion on the terminal. Since the contact is prevented, the tip can be prevented from contacting and damaging the terminal.
Moreover, in the terminal extraction jig according to the present invention, since the convex portion is provided so as to project in the direction of pushing up the terminal, the elastic locking piece is caught on the terminal when the terminal is pulled out from the terminal accommodating chamber It can be prevented.
Therefore, the terminal removing jig according to the present invention can be easily pulled out from the terminal accommodating chamber without damaging the terminals.

FIG. 1A is a side view of a terminal removal jig according to Embodiment 1 of the present invention, and FIG. 1B is an enlarged view of the tip of the insertion portion shown in FIG. FIG. 2 is a perspective view of the vicinity of the tip of the terminal extraction jig shown in FIG. 1, where FIG. Is. FIG. 3 is a cross-sectional view of the connector housing and the terminal, showing the terminal locked by the elastic locking piece in the terminal accommodating chamber. FIG. 4 is a diagram for explaining a procedure of pulling out the terminal from the terminal accommodating chamber using the terminal removing jig, and an operation of each part such as the elastic locking piece. FIG. 5 is a diagram for explaining a modified example of the convex portion. FIG. 6 is a diagram for explaining the problems of the conventional technique.

Hereinafter, preferred embodiments of a terminal removal jig according to the present invention will be described in detail with reference to the drawings.

FIG. 1A is a side view of the terminal extraction jig 1 according to the first embodiment of the present invention, and FIG. 1B is an enlarged view of the tip 20c of the insertion portion 20 shown in FIG. FIG. 2 is a perspective view around the tip 20c of the terminal extraction jig 1 shown in FIG. 1, where (a) is a view as seen obliquely from the terminal side surface 20a side and (b) is oblique as seen from the back surface 20b side. It is the figure seen in the direction. FIG. 3 is a cross-sectional view of the connector housing 30 and the terminal 40, showing the terminal 40 locked in the terminal housing chamber 31 by the elastic locking piece 32.
In the terminal removal jig 1 according to the embodiment of the present invention, when the terminal 40 locked by the elastic locking piece 32 into the terminal housing chamber 31 of the connector housing 30 is pulled out, the elastic locking piece 32 is unlocked. It is a jig used for bending.
First, before describing the terminal removal jig 1, the terminals 40 and the connector housing 30 will be described.

The terminal 40 is formed by molding a metal plate member by die pressing or the like, and as shown in FIG. 3, a mating terminal connecting portion 41 to which a mating terminal (not shown) that is a mating partner is connected, and a mating terminal. And a connection portion with an electric wire (not shown) connected to the connection portion 41.

The mating terminal connecting portion 41 is formed in a rectangular tube shape by a bottom wall 42, a pair of side walls 43, 43 provided upright on both end portions of the bottom wall 42, and a ceiling wall 44.
The mating terminal connecting portion 41 is provided with elasticity on the ceiling wall 44 side by inserting the tab-like connecting portion of the mating terminal into the inside of the cylinder from the left direction in FIG. The connection piece 45 and the bottom wall 42 are sandwiched and connected.

Further, the mating terminal connecting portion 41 is formed with a locking hole 42a in which the locking projection 32a of the elastic locking piece 32 is engaged with the bottom wall 42.

Next, the connector housing 30 will be described.
The connector housing 30 is a block body made of an insulating resin, and has a terminal accommodating chamber 31 in which the terminals 40 are accommodated, and a jig insertion space 33 into which the below-described insertion portion 20 of the terminal extraction jig 1 is inserted.

The terminal accommodating chamber 31 has a terminal insertion opening (not shown) formed at the right end in FIG. 3, and a mating terminal insertion opening 35 into which the connection portion of the mating terminal is inserted at the left end.

In the terminal accommodating chamber 31, the tip end of the elastic locking piece 32 is inclined with respect to the bottom wall 42-side wall 31a of the terminal 40 whose end is accommodated in the terminal accommodating chamber 31 so as to have an upward slope in the insertion direction of the terminal 40. It is erected in the diagonal direction.
The space formed between the elastic locking piece 32 and the wall 31a is a bending space 34 for bending the elastic locking piece 32 in the locking release direction.

Further, the elastic locking piece 32 has a locking projection 32a for locking the terminal 40 in the terminal accommodating chamber 31 and a tip projecting portion 32b on which a force for bending in the unlocking direction is applied.

The locking protrusion 32a is a portion that is engaged with the locking hole 42a of the terminal 40 housed in the terminal housing chamber 31 in an elastically neutral state where the elastic locking piece 32 is not bent in the unlocking direction. Is.

The tip protruding portion 32b is a portion in which the wall forming the surface of the elastic locking piece 32 on the side of the bending space 34 is further projected forward from the front end surface of the locking projection 32a.

In the jig insertion space 33, a jig insertion opening 33a that serves as an insertion opening for the insertion portion 20 of the terminal removal jig 1 is formed on the surface of the connector housing 30 where the mating terminal insertion opening 35 is formed, and is elastically locked from the jig insertion opening 33a. It is a space extending toward the piece 32.

More specifically, the jig insertion space 33 forms a continuous space from the jig insertion opening 33a to the proximal end portion of the elastic locking piece 32, and the jig insertion space 33 extends from the jig insertion opening 33a to the proximal end portion of the elastic locking piece 32. The continuous surface 33b is a surface facing the back surface 20b of the insertion portion 20 of the terminal extraction jig 1.

Next, the terminal removal jig 1 will be described.
As shown in FIG. 1A, the terminal removal jig 1 includes a grip portion 10 that is a portion to be gripped by an operator, and an insertion portion that is a portion to be inserted toward the elastic locking piece 32 through the jig insertion space 33. 20 and.

The insertion portion 20 is a rod-shaped portion having a rectangular cross section, and a locking release inclined surface 21 that bends the elastic locking piece 32 in the locking release direction by slidingly contacting the distal end protruding portion 32b, a convex portion 22, Have.

The unlocking inclined surface 21 is formed as an inclined front end surface that is retracted from the terminal side surface 20a, which is the surface on the terminal 40 side, toward the back surface 20b of the terminal side surface 20a in the insertion attitude into the jig insertion space 33. ..
The unlocking inclined surface 21 makes the elastic locking piece 32 bend in the unlocking direction by slidingly contacting the tip protrusion 32b.

The convex portion 22 is a portion protruding from the terminal side surface 20 a of the elastic locking piece 32 so as to prevent the tip from coming into contact with the terminal 40.
More specifically, the convex portion 22 is a portion that projects from the terminal side surface 20a in an arcuate cross section, and forms a smooth curved surface without edges along the extending direction of the insertion portion 20.
In this embodiment, the convex portion 22 is in a so-called zero-touch state in which the insertion portion 20 is inserted to the insertion completion position of the jig insertion space 33 and is in contact with the terminal 40 without being compressed and deformed.
It should be noted that the convex portion 22 does not have a zero-touch state in the terminal 40 when the insertion portion 20 is inserted up to the insertion completion position of the jig insertion space 33, and a slight gap may be present between the convex portion 22 and the terminal 40. Absent.

Further, in this embodiment, the convex portion 22 is arranged around the distal end 20c of the insertion portion 20.
Even when the insertion portion 20 is inserted into the jig insertion space 33 while being inclined, the convex portion 22 comes into contact with the terminal 40 before the tip 20c of the insertion portion 20.
That is, the protrusion 22 prevents the tip 20 c of the insertion portion 20 from damaging the terminal 40.

Further, since the convex portion 22 functions as a portion for lifting the terminal 40 in a state where the insertion portion 20 is inserted to the insertion completion position of the jig insertion space 33, when the terminal 40 is pulled out from the terminal accommodating chamber 31, the terminal It is difficult for 40 to be caught in the elastic locking piece 32.

Further, the insertion portion 20 of this embodiment is formed with a locking piece storage inclined surface 23.
The locking piece storage inclined surface 23 is an inclined surface formed on the back surface 20b of the terminal side surface 20a, that is, on the back surface 20b of the insertion portion 20 so as to be thinner toward the locking release inclined surface 21.

When the insertion portion 20 is inserted to the insertion completion position of the jig insertion space 33, the tip projection 32b of the locking piece storage inclined surface 23 is continuously slidably guided from the locking release inclined surface 21. , A surface that guides the tip protruding portion 32b to the back surface 20b side of the insertion portion 20.

Here, with reference to FIG. 4, a procedure for pulling out the terminal 40 from the inside of the terminal accommodating chamber 31 using the terminal removing jig 1 and an operation of each part related to the locking of the elastic locking piece 32 and the like will be described.
FIG. 4 is a diagram for explaining a procedure of pulling out the terminal 40 from the inside of the terminal accommodating chamber 31 using the terminal extracting jig 1 and an operation of each part such as the elastic locking piece 32.

First, the operator of the terminal removal jig 1 (hereinafter, simply referred to as “operator”) starts inserting the insertion portion 20 from the jig insertion opening 33a of the connector housing 30 (see FIG. 4A).
When the insertion portion 20 is started to be inserted from the jig insertion opening 33a, the locking piece storage inclined surface 23 functions as a guide surface even when the terminal extraction jig 1 is obliquely inserted into the jig insertion space 33. As a result, the insertion portion 20 can easily enter the jig insertion space 33.

Then, the operator moves the insertion portion 20 further inward of the jig insertion space 33 (see FIG. 4B).
The posture of the insertion portion 20 inserted inside the jig insertion space 33 is in a state along the extending direction of the jig insertion space 33, and the contact portion with the terminal 40 is only the convex portion 22.
That is, in the terminal removal jig 1, the insertion portion 20 can be inserted into the jig insertion space 33 with only the convex portion 22 of the terminal side surface 20a as the contact portion with the terminal 40.
Therefore, the terminal removal jig 1 makes only the convex portion 22 contact the terminal 40 without inserting the tip 20c into the terminal 40, and inserts the insertion portion 20 into the jig insertion space 33.

After that, the operator inserts the insertion part 20 to the insertion completion position of the jig insertion space 33 (see FIG. 4C).
More specifically, in the insertion portion 20, the locking release inclined surface 21 which is the front end surface contacts the front end protruding portion 32b of the elastic locking piece 32 in the process of insertion to the insertion completion position. After that, when the insertion portion 20 further moves in the insertion direction while being in contact with the distal end protruding portion 32b, the distal end protruding portion 32b is brought into sliding contact with the locking release inclined surface 21 to lock the elastic locking piece 32. Bend in the release direction. Thereafter, the insertion portion 20 further moves in the insertion direction, and the elastic projection 32 is further bent in the unlocking direction while the distal projection 32b is brought into sliding contact with the unlocking inclined surface 21. 32b is guided by the locking piece storage inclined surface 23 and is stored on the back surface 20b side of the insertion portion 20.

When the insertion portion 20 is inserted to the insertion completion position of the jig insertion space 33, the convex portion 22 lifts the terminal 40. Therefore, when the terminal 40 is pulled out from the terminal accommodating chamber 31, the terminal 40 contacts the elastic locking piece 32. It is difficult to get caught.
Particularly, in this embodiment, since the convex portion 22 is arranged around the tip 20c of the insertion portion 20, the convex portion 22 is adapted to lift around the locking hole 42a of the terminal 40.

Further, the distal end protruding portion 32b is accommodated on the back surface 20b side of the insertion portion 20, so that the terminal extraction jig 1 is not pushed back by the elastic locking piece 32.

Finally, the operator pulls out the terminal 40 from the terminal accommodating chamber 31.
The terminal removal jig 1 inserted to the insertion completion position pushes up the terminal 40 by the convex portion 22 so that the terminal 40 is unlikely to be caught by the elastic locking piece 32, and further, the tip protruding portion 32b is placed on the rear surface 20b side of the insertion portion 20. The elastic locking piece 32 prevents it from being pushed back.
The operator can easily pull out the terminal 40 unlocked by the terminal removing jig 1 in this way from the terminal accommodating chamber 31.

In the terminal extraction jig 1 according to the embodiment of the present invention, the elastic release piece 32 is bent in the releasing direction by the unlocking inclined surface 21, and the projection 22 provided on the terminal side surface 20a has the tip of the insertion portion. Since the terminal 20c is prevented from contacting the terminal 40, it is possible to prevent the terminal 20 from being damaged by the contact of the tip 20c.
Moreover, in the terminal removal jig 1 according to the embodiment of the present invention, since the convex portion 22 is provided so as to project in the direction of pushing up the terminal 40, when the terminal 40 is pulled out from the terminal accommodating chamber 31, the terminal 40 is elastically locked to the terminal 40. It is possible to prevent the piece 32 from being caught.
Therefore, the terminal removal jig 1 according to the present invention can be easily pulled out from the terminal accommodating chamber 31 without damaging the terminals 40.

Further, in the terminal removal jig 1 according to the embodiment of the present invention, since the convex portion 22 is arranged around the tip 20c of the insertion portion 20, when the insertion portion 20 is inserted into the jig insertion space 33, at an earlier stage. The convex portion 22 is brought into a state in which it can come into contact with the terminal 40, and as a result, it is possible to more reliably prevent the distal end 20c of the insertion portion 20 from coming into contact with the terminal 40.
Further, in the terminal extraction jig 1 according to the present invention, the convex portion 22 can push up the terminal 40 around the locking portion of the terminal 40 in a state where the insertion portion 20 is inserted at the insertion completion position of the jig insertion space 33. Therefore, when the terminal 40 is pulled out from the terminal accommodating chamber 31, it is possible to more reliably prevent the elastic locking piece 32 from being caught by the terminal 40.

Further, in the terminal removal jig 1 according to the embodiment of the present invention, when the insertion portion 20 is inserted to the insertion completion position of the jig insertion space 33, the tip of the elastic locking piece 32 is projected by the locking piece storage inclined surface 23. The part 32b can be guided to the back surface 20b side of the insertion part 20.
Therefore, since the terminal removal jig 1 according to the present invention is not pushed back by the elastic locking piece 32 when the insertion portion 20 is inserted up to the insertion completed position of the jig insertion space 33, the unlocking property. Can be improved.

In addition, the terminal removal jig 1 according to the embodiment of the present invention exemplifies that the protrusion 22 is arranged around the distal end 20c of the insertion portion 20, but the present invention is not limited to this, and the protrusion 22 includes the insertion portion 20. It suffices that it be provided so as to project from the side surface 20a of the terminal so as to prevent the tip 20c thereof from contacting the terminal 40.

Further, in the terminal extraction jig 1 according to the embodiment of the present invention, the convex portion 22 is a portion protruding from the terminal side surface 20a in an arc cross section, and has a smooth curved surface without edges along the extending direction of the insertion portion 20. However, the present invention is not limited to this, and may be provided so as to project from the terminal side surface 20a so as to prevent the tip 20c of the insertion portion 20 from coming into contact with the terminal 40. For example, the protrusion 24 may have a flat top as shown in FIG.

The invention made by the present inventor has been specifically described above based on the embodiments of the invention described above, but the invention is not limited to the embodiments of the invention described above, and does not depart from the scope of the invention. Can be variously changed.

DESCRIPTION OF SYMBOLS 1 Terminal extraction jig 10 Gripping portion 20 Insertion portion 20a Terminal side surface 20b Back surface 20c Tip 21 Lock release inclined surface 22, 24 Convex portion 23 Locking piece storing inclined surface 30 Connector housing 31 Terminal accommodating chamber 31a Wall 32 Elastic locking piece 32a Locking protrusion 32b Tip protruding part 33 Jig insertion space 33a Jig insertion hole 33b Surface 34 Bending space 35 Mating terminal insertion hole 40 Terminal 41 Mating terminal connecting portion 42 Bottom wall 42a Locking hole 43 Side wall 44 Ceiling wall 45 Elastic connecting piece

Claims (3)

A portion that is inserted through the jig insertion space toward an elastic locking piece that has a locking projection that locks the terminal in the terminal housing chamber of the connector housing and a tip projection that is acted on by a force that bends in the unlocking direction. ,
It is formed as an inclined front end surface that recedes from the terminal side surface that is the terminal side surface toward the back surface of the terminal side surface in the insertion attitude into the jig insertion space, and is slidably contacted with the front end protruding portion, An unlocking inclined surface that bends the elastic locking piece in the unlocking direction,
A protrusion protruding from the side surface of the terminal so as to prevent the tip from coming into contact with the terminal;
A terminal removal jig having an insertion part provided with. The convex portion is
It is arrange|positioned around the front-end|tip of the said insertion part. The terminal extraction jig of Claim 1 characterized by the above-mentioned. The insertion part is
It is an inclined surface formed on the back surface so as to reduce the thickness toward the unlocking inclined surface, and when the insertion portion is inserted to the insertion completion position of the jig insertion space, the tip protruding portion is The terminal removal jig according to claim 1 or 2, wherein a locking piece housing inclined surface that guides to the back side is formed.

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