JP3948525B2 - Terminal disengagement jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal engagement release jig .
[0002]
[Prior art]
In general, a connector is formed by engaging a lance provided in the terminal storage chamber with a connection terminal inserted into the terminal storage chamber in the connector housing from the rear end of the connector housing, It is configured so as to prevent rearward slipping from.
[0003]
The terminal engagement release jig is used for extracting the connection terminal from the connector housing in which the connection terminal is accommodated. To remove the connection terminal using the terminal engagement release jig, first insert the terminal engagement release jig from the front of the connector housing, and then deflect the lance with the terminal engagement release jig to connect the connection terminal. After the engagement is released, the connection terminal is pulled backward from the connector housing.
[0004]
The terminal engagement release jig is also referred to as a “terminal extraction jig”. The tip shape of the conventional terminal engagement release jig is a simple shape with a single inclined surface, and when the terminal engagement release jig is inserted into the terminal housing chamber of the connector housing, The lance is pushed up (or pushed down) along the inclined surface, whereby the engagement between the lance and the connection terminal is released.
[0005]
As an example of a conventional terminal engagement release jig, the angle of the tip inclined surface of the terminal engagement release jig (terminal extraction jig) is a tangent line connecting both sliding points of the lance tip protrusion and the locking protrusion. The tip of the terminal engagement release jig (terminal extraction jig) is prevented from interfering with the lance before the engagement with the connection terminal is released. There is known one that can reliably release the engagement (see Patent Document 1).
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-115644 (pages 3 to 4, FIG. 1)
[0007]
Note that the terminal engagement release jig (terminal extraction jig) disclosed in Patent Document 1 is extended forward from the inner wall of the terminal accommodating chamber and the front end portion (ie, the front end portion) is a free end. It has a shape corresponding to the formed cantilever lance (that is, the cantilever lance). However, due to the recent demand for connector miniaturization, the width of the lance has to be reduced (in other words, narrow), and in the case of a cantilever lance, it is difficult to prevent the connection terminal from coming off from the connector housing. ing.
[0008]
Therefore, development of a compact connector having a double-sided lance (ie, a double-sided lance) in which the front and rear ends of the lance (ie, the front end and the rear end in the connecting terminal insertion direction of the lance) are coupled to the connector housing. Is underway.
[0009]
[Problems to be solved by the invention]
However, the conventional terminal engagement release jig (that is, a terminal engagement release jig for a cantilever lance) is used to release the engagement between the both-end supported lance and the connection terminal without unreasonableness, while the connector is connected to the connector. It is difficult to extract from the housing. Specifically, in the conventional terminal disengagement jig, because of the simple tip shape, the both-end lance is pushed up (or pushed down) sufficiently to bend between the both-end lance and the connection terminal. This is because it is difficult to release the engagement.
[0010]
For example, even if the conventional terminal engagement releasing jig can be used to release the engagement between the both-end lance and the connection terminal, the terminal engagement release jig is Since the connection terminal is pressed before the engagement is released, and the connection terminal is forcibly pushed in, the latching portion (that is, the portion engaging with the connection terminal) of the both-end lance is scraped by the connection terminal. As a result, the connector housing may become defective.
[0011]
Further, unlike a cantilever lance in which only the base end portion (that is, the rear end portion) is coupled to the connector housing, the tip end portion (that is, the front end portion) of the both-end lance is coupled to the connector housing, Since the tip of the lance itself is difficult to bend, it is necessary to abut the terminal engagement releasing jig in the vicinity of the engaging portion with the connection terminal located between the front end portion and the rear end portion of the both-end lance. Therefore, as compared with the case where the engagement between the cantilever lance and the connection terminal is released, not only the insertion force (that is, the operation force) of the terminal engagement release jig is extremely increased, but also the terminal engagement release treatment is performed. There is also a possibility that the two-sided lance or the like may be plastically deformed by the tool.
[0012]
The present invention has been made in view of the above-described circumstances, and its purpose is to bend the both-end lance in a direction to release the engagement by pressing the vicinity of the engagement portion with the connection terminal of the both-end lance. Another object of the present invention is to provide a terminal engagement releasing jig that can easily and reliably release the engagement between the both-end lance and the connection terminal without damaging the connector housing.
[0013]
[Means for Solving the Problems]
In order to achieve the above-described object, a terminal disengagement jig according to the present invention includes a connector housing, a terminal housing chamber formed inside the connector housing, and a connector housing, as described in claim 1 . A connection terminal inserted from the rear and housed in the terminal housing chamber, and provided in the connector housing so as to protrude into the terminal housing chamber and in a direction orthogonal to the insertion direction of the connection terminal into the terminal housing chamber A doubly-supported lance formed in a doubly-supported manner in which a first connecting portion in the insertion direction of the connection terminal and a second connecting portion in the rear of the insertion direction are connected to the connector housing so as to be deformable. The doubly-supported lance has a locking portion protruding toward the connection terminal between the first coupling portion and the second coupling portion, and the engagement portion is engaged with the connection terminal. In order to extract the connection terminal from the connector in which the projection is engaged and the connection terminal is locked in the terminal accommodation chamber, the terminal accommodation chamber is passed through a jig insertion port provided on the front side of the connector housing. A terminal engagement releasing jig that can be inserted into the terminal accommodating chamber and bends the both-ends lance to release the engagement between the engaging portion and the engaging protrusion ,
A rod-shaped body;
A lower tapered surface inclined downward from the tip of the rod-shaped main body;
A projecting portion projecting downward of the rod-shaped body in succession in the lower tapered surface,
Equipped with a,
Before the tip of the rod-shaped main body, which is inserted from the jig insertion port with the protrusion toward the side of the both-end lance, abuts against the engagement protrusion of the connection terminal, the protrusion is connected to the end of the both-end lance. The upper end of the both-end lance is pushed over the first coupling portion, the both-end lance is bent, and the engagement between the locking portion and the engagement protrusion is released .
[0014]
According to the invention described in claim 1, terminal disengaging jig, rod-like body, the lower tapered surface inclined from the tip of the rod-like body downward, and continuously to the lower tapered surface beneath the rod-like body projecting portion projecting, is provided with the, have both in a direction to release the engagement by pushing the engaging portion near the protruding portion provided at a distal end of the rod-like body and the connection terminal of the lance has two lances Therefore, the engagement between the both-end lance and the connection terminal can be released easily and reliably. Further, the terminal engagement release jig does not press the connection terminal before the engagement between the both-end lance and the connection terminal is released. In other words, it is possible to prevent the terminal engagement releasing jig from forcibly pushing the connection terminal and cutting the lance by the connection terminal.
[0015]
The terminal engagement release jig according to the present invention is the terminal engagement release jig according to claim 1, wherein the terminal engagement release jig according to the present invention has an upper taper surface inclined upward from the tip of the rod-shaped body. Furthermore, it is characterized by providing.
[0016]
According to the second aspect of the present invention, since the terminal engagement releasing jig further includes an upper tapered surface that is inclined upward from the tip of the rod-shaped main body, the tip of the rod-shaped main body is formed between the both-end lance and the connection terminal. It smoothly enters (i.e., is inserted) in between, and the protrusion provided at the tip of the rod-shaped main body releases the engagement with the connection terminal of the both-end lance.
[0021]
The terminal disengagement jig according to the present invention, as described in claim 3, in claim 1 or claim 2 terminal disengagement jig according to define the jig insertion opening the The rod-shaped main body is inserted into the terminal accommodating chamber in parallel with the insertion direction of the connection terminal along the surface of the connector housing.
[0022]
According to the third aspect of the present invention, the rod-like main body is inserted into the terminal accommodating chamber in parallel with the insertion direction of the connection terminal along the surface of the connector housing that defines the jig insertion slot. The surface of the connector housing that defines the guide serves as a guide for inserting the rod-shaped main body into the terminal accommodating chamber in parallel to the insertion direction of the connection terminal, so that the engagement between the both-end lance and the connection terminal can be released more easily and reliably. .
[0027]
The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading embodiments of the invention described below with reference to the accompanying drawings.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.
1 is an exploded perspective view of a connector housing having a connector housing, a locking member, and a connection terminal, FIG. 2 is a longitudinal sectional view of the connector showing a state in which the locking member is temporarily locked to the connector housing, and FIG. FIG. 4 is a cross-sectional perspective view showing a state in which the connection terminal is inserted into the connector housing in which the members are temporarily locked, and FIG. 4 is a cross-sectional view in which the locking member is permanently locked to the connector housing in which the connection terminals are inserted. FIG. 5 is a perspective view of an embodiment of a terminal engagement release jig according to the present invention, FIG. 6 is a side view of the terminal engagement release jig of FIG. 5, and FIG. 7 is a terminal engagement release of FIG. The main part enlarged side view which shows the front-end | tip shape of a jig | tool, and FIG.8 (A)-FIG.8 (C) are both terminal lances and a connection terminal using the terminal engagement cancellation | release jig | tool shown by FIG. It is a principal part expanded side view which shows the procedure which cancels | releases these.
[0029]
As shown in FIGS. 1 and 3, the connector 10 includes a male connector housing 11 made of a synthetic resin insulator, a locking member 12 made of a synthetic resin insulator, and a connection terminal 4. . In FIG. 1, the connector 10 is shown with the upper part of the connector housing 11 facing down and the lower part facing up. Inside the connector housing 11, a plurality of terminal accommodating chambers 11a, which are respectively separated by the partition walls 11c, are formed in two upper and lower stages, and terminals corresponding to the respective terminal accommodating chambers 11a are formed on the front wall 11k. The insertion port 11m is open. A hollow portion 13 is formed in the middle portion of the lower outer peripheral wall 11b of the connector housing 11 so as to penetrate up and down across the partition wall 11c between the terminal accommodating chambers 11a. From here, the locking member 12 is detachably inserted. It has become. The outer wall of the terminal accommodating chamber 11a disposed on the outermost side is cut out at the cavity portion 13 and its vicinity, thereby forming a groove portion 11d.
[0030]
In the terminal accommodating chamber 11a formed in front of the cavity 13, a both-end lance 11h is provided in a double-ended manner with its front and rear ends coupled to the connector housing 11 and orthogonal to the insertion direction of the connection terminal 4. It is possible to bend and deform in the direction of movement. The front end portion of the both-end lance 11h is coupled to the connector housing 11 at both sides, and is formed in a substantially T shape in plan view. Further, a locking portion 11i protruding inward of the terminal accommodating chamber 11a is formed on the upper surface of the both-end lance 11h, and this locking portion 11i is engaged with the engagement protrusion 4b of the connection terminal 4. . Note that a jig insertion port 11n is formed in the front wall 11k of the connector housing 11 so as to open corresponding to the both-side supported lances 11h.
[0031]
The locking member 12 is a frame having a plurality of openings 12a having substantially the same opening dimensions as the respective opening dimensions of the plurality of terminal accommodating chambers 11a, and a lid plate portion 12b for closing the cavity portion 13 of the connector housing 11. There are a bottom plate portion 12c parallel to this, an intermediate vertical plate portion 12d corresponding to the partition wall 11c of each terminal accommodating chamber 11a, and left and right side walls 12e which are outermost vertical plate portions. In each opening 12a, a terminal locking portion 12f (see FIG. 3) that engages with the shoulder 4a of the connection terminal 4 protrudes. The lower end of the front end surface 12g of the side wall 12e is provided with a first locking projection 12h, and the rear end surface 12j is provided with a doubly supported beam-like flexible arm 12n having a second locking projection 12m through a slit 12k. ing.
[0032]
As shown in FIG. 2, a U-shaped groove 12p is formed in the rear portion of the first locking protrusion 12h, and elasticity is imparted to the first locking protrusion 12h by the U-shaped groove 12p. Further, two guide ribs 12r are formed on the inner surface side of the first locking projection 12h in parallel with the insertion direction of the connection terminal 4. A tapered surface 12s is provided at the rear end of the guide rib 12r. The height of the guide rib 12r is, for example, about 0.15 mm. When the locking member 12 is inserted into the cavity 13, the guide rib 12r slightly protrudes from the partition wall 11c of the terminal accommodating chamber 11a. Further, the first locking projection 12h has a tapered surface on the upper surface side, while the second locking projection 12m is formed as a chevron projection whose upper and lower surfaces are tapered.
[0033]
Corresponding to the first locking projection 12h and the second locking projection 12m of the locking member 12, a first engaging portion 11e and a second engaging portion 11f are formed in the connector housing 11. The first engaging portion 11e inserts the locking member 12 into the connector housing 11 from the hollow portion 13, and when the opening 12a reaches a position substantially matching the terminal accommodating chamber 11a, the first engaging portion 11e is in this position. The taper surface 11g is provided on the lower surface side for engaging with the first locking protrusion 12h to temporarily fix it at the temporary locking position. On the other hand, the second engaging portion 11f further engages with the second locking projection 12m at a position where the locking member 12 is further inserted and the terminal locking portion 12f engages with the shoulder 4a of the connection terminal 4. A taper surface 11j is provided on the lower surface side for main locking at the main locking position.
[0034]
As shown in FIG. 2, when the locking member 12 is inserted into the hollow portion 13 of the connector housing 11 and lightly pressed in the direction of the arrow A, the first locking projection 12h slides on its tapered surface to the tapered surface 11g. Over the first engaging portion 11e in the connector housing, and at the same time, the second locking projection 12m is placed on the tapered surface 11j of the second engaging portion 11f, so that the locking member 12 is connected to the connector housing 11 Is temporarily locked against. In this temporary locking position, the opening 12a of the locking member 12 substantially coincides with the terminal accommodating chamber 11a (that is, communicates to the extent that the connection terminal 4 can be inserted). 4 can be inserted.
[0035]
When the locking member 12 is further pressed in the arrow A direction from the temporary locking position, the flexible arm 12n to which elasticity is imparted by the slit 12k bends in the arrow B direction, whereby the second locking projection 12m becomes its own. The locking member 12 is finally locked to the connector housing 11 by overcoming the second engaging portion 11f while sliding the tapered surface against the tapered surface 11j. In this final locking position, as shown in FIG. 4, the terminal locking portion 12 f is engaged with the shoulder portion 4 a of the connection terminal 4. Accordingly, the connection terminal 4 is doubly locked by the doubly supported lance 11h and the terminal locking portion 12f.
[0036]
That is, as shown in FIG. 3, when the connection terminal 4 is inserted in the terminal receiving chamber 11 a from the rear in the arrow C direction at the temporary locking position of the locking member 12, the connection terminal 4 is placed in the terminal receiving chamber 11 a. By slidingly contacting the rear taper surface of the both-end lance 11h, the both-end lance 11h bends in a direction perpendicular to the insertion direction of the connection terminal 4 (ie, downward) to allow further insertion of the connection terminal 4. When the engaging protrusion 4b of the connection terminal 4 reaches (i.e., gets over) the locking portion 11i, the both-end lance 11h returns to the original position, and the locking portion 11i becomes the engaging protrusion 4b of the connection terminal 4. And the connection terminal 4 is primarily locked. In this state, as shown in FIG. 4, when the locking member 12 is pressed in the direction of arrow A and moved to the final locking position, the terminal locking portion 12 f in the opening 12 a is connected to the shoulder portion of the connection terminal 4. The connection terminal 4 is further secondary-locked by engaging with 4a. In addition, what is necessary is just to perform the latch release of the locking member 12 in the reverse procedure to the above-mentioned procedure.
[0037]
As shown in FIGS. 5 to 7, the terminal engagement release jig 20 according to the present invention includes a grip portion 21 and a rod-like main body 22 extended from one end of the grip portion 21, and these are made of metal. It is integrally formed of materials. The rod-shaped main body 22 has a base portion 22a that is relatively wide and has increased rigidity, and a distal end portion 22b that is thinly formed so as to be inserted from the jig insertion port 11n of the connector housing 11. . As shown in FIG. 7, the tip 22b is provided with an upper taper surface 22c and a lower taper surface 22d that are inclined upward and downward from the tip, and a protrusion that projects downward continuously from the lower taper surface 22d. A portion 22e is formed. The protrusion 22e protrudes in a direction substantially perpendicular to the longitudinal direction of the rod-shaped main body 22, and when the terminal engagement releasing jig 20 is inserted into the terminal accommodating chamber 11a between the protrusion 22e and the base 22a. A evacuation space for escaping the both-end lance 11h is provided. The length of the tip 22b is preferably as short as possible from the viewpoint of strength, and the protrusion 22e of the terminal engagement releasing jig 20 inserted from the jig insertion port 11n is connected to the doubly supported lance 11h. It is made to the extent which reaches the stop part 11i.
[0038]
Next, the operation of this embodiment will be described.
As described above, in order to pull out the double-locked connection terminal 4 from the connector housing 11, first, the locking member 12 is moved in the direction opposite to the arrow A direction to move from the final locking position shown in FIG. 4. It is displaced to the temporary locking position shown in FIG. Next, as shown in FIG. 8A, the rod-like main body 22 of the terminal engagement release jig 20 is inserted in the direction of arrow D from the jig insertion port 11n. The lower taper surface 22d of the terminal engagement release jig 20 contacts the front end inclined surface 11p formed to be inclined upward at the tip of the both-end lance 11h.
[0039]
As shown in FIG. 8B, when the terminal engagement release jig 20 is further inserted in the direction of arrow D, the terminal engagement release jig 20 slides the lower tapered surface 22d on the front end inclined surface 11p. The tip end (front end) of the both-end lance 11h is smoothly passed over, enters between the both-end lance 11h and the connection terminal 4, and the protrusion 22e comes into contact with the upper surface of the both-end lance 11h and pushes it down. . At this time, the inner peripheral surface of the front wall 11k of the connector housing 11 that defines the jig insertion port 11n serves as at least a guide, and the front end inclined surface 11p of the both-side supported lance 11h also serves as a guide, along which the rod-shaped main body is formed. 22 is inserted into the terminal accommodating chamber 11 a in parallel with the insertion direction of the connection terminal 4. The double-supported lance 11h bends downward in a substantially arcuate shape with the X and Y points continuous with the connector housing 11 as fulcrums, and the engagement between the engagement protrusion 4b of the connection terminal 4 and the engaging portion 11i of the dual-support lance 11h Canceled. The upper taper surface 22c of the terminal engagement releasing jig 20 is engaged with the connection terminal 4 before the engagement between the engagement protrusion 4b of the connection terminal 4 and the engaging portion 11i of the both-end lance 11h is released. It is formed so that the bar-shaped main body 22 does not press the mating protrusion 4b. Here, as shown in FIG. 8C, by pulling the connection terminal 4 in the direction of arrow E, the connection terminal 4 can be extracted from the terminal accommodating chamber 11a.
[0040]
Thus, the rod-like main body 22 of the terminal engagement releasing jig 20 is inserted between the both-end supported lance 11h and the connection terminal 4 while sliding the lower tapered surface 22d on the front end portion of the both-end supported lance 11h. At this time, since the protrusion 22e presses the upper surface of the both-end lance 11h and bends the lower-end lance 11h downward, the engagement between the both-end lance 11h and the connection terminal 4 can be easily and reliably released. Further, the insertion force (operation force) of the terminal engagement release jig 20 does not become extremely large, so that plastic deformation of the doubly supported lance 11h and the like can be prevented.
[0041]
Further, the upper taper surface 22c is a terminal engagement release jig so as not to press the engagement protrusion 4b before the engagement between the engagement portion 11i of the both-end lance 11h and the engagement protrusion 4b of the connection terminal 4 is released. Since the terminal engagement release jig 20 forcibly pushes in the connection terminal 4 and the engagement protrusion 4b of the connection terminal 4 cuts the doubly supported lance 11h. .
[0042]
In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.
[0043]
In the above-described embodiment, the case where the present invention is applied to a male connector housing that accommodates female terminals (connection terminals) has been described. However, the present invention can be similarly applied to a female connector housing that accommodates male terminals. .
[0044]
【The invention's effect】
As described above, according to the present invention, the engagement between the both-end lance and the connection terminal can be easily and reliably released. Further, the insertion force (operation force) of the terminal engagement release jig does not become extremely large, and therefore plastic deformation of a double-supported lance or the like can be prevented.
[0045]
In addition, according to the present invention, it is possible to prevent the terminal engagement releasing jig from forcibly pushing the connection terminal and cutting the lance by the connection terminal.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a connector having a connector housing, a locking member, and a connection terminal.
FIG. 2 is a longitudinal sectional view of a connector showing a state in which a locking member is temporarily locked to a connector housing.
FIG. 3 is a perspective view showing, in section, a state in which a connection terminal is inserted into a connector housing in which a locking member is temporarily locked.
FIG. 4 is a perspective view showing, in section, a state in which a locking member is permanently locked to a connector housing in which a connection terminal is inserted.
FIG. 5 is a perspective view of an embodiment of a terminal engagement release jig according to the present invention.
6 is a side view of the terminal engagement release jig of FIG. 5. FIG.
7 is an enlarged side view of a main part showing a tip shape of the terminal engagement releasing jig of FIG. 5;
FIGS. 8A, 8B, and 8C are diagrams showing a procedure for releasing the engagement between the doubly supported lance and the connection terminal using the terminal engagement release jig shown in FIGS. FIG.
[Explanation of symbols]
4: Connection terminal 4b: Engagement protrusion 10: Connector 11: Connector housing 11a: Terminal accommodating chamber 11h: Both-end lance 11i: Locking part 11k: Front wall 11n: Jig insertion slot 20: Terminal engagement release jig 22 : Rod-shaped main body 22c: Upper tapered surface 22d: Lower tapered surface 22e: Projection

Claims (3)

A connector housing, a terminal accommodating chamber formed in the connector housing, a connection terminal inserted from the rear of the connector housing and accommodated in the terminal accommodating chamber, and the connector housing so as to protrude into the terminal accommodating chamber The connector includes a first coupling portion at the front of the connection terminal in the insertion direction and a second coupling portion at the rear in the insertion direction so that the connection terminal can be bent and deformed in a direction orthogonal to the insertion direction of the connection terminal into the terminal accommodating chamber. A doubly supported lance coupled to the housing and having a latching portion protruding toward the connection terminal between the first coupling portion and the second coupling portion. Then, the engagement protrusion of the connection terminal is engaged with the locking portion, and the connection terminal is removed from the connector locked in the terminal accommodating chamber. In order to remove the engagement, the both-end lance is bent when inserted into the terminal accommodating chamber through the jig insertion opening provided on the front side of the connector housing. A terminal engagement release jig for releasing the engagement between the stop portion and the engagement protrusion,
A rod-shaped body;
A lower tapered surface inclined downward from the tip of the rod-shaped main body;
A protrusion projecting downward from the rod-shaped main body continuously to the lower tapered surface;
With
Before the tip of the rod-shaped main body, which is inserted from the jig insertion port with the protrusion toward the side of the both-end lance, abuts against the engagement protrusion of the connection terminal, the protrusion is connected to the end of the both-end lance. Terminal engagement characterized in that the upper end of the both-end lance is pushed over the first coupling portion and the both-end lance is bent to disengage the engagement portion and the engagement protrusion. Release jig. Terminal disengagement jig according to claim 1, characterized in that further Ru comprising a tapered surface on which slopes upward from the tip of the rod-shaped body. Claim 1 or claim 2, characterized in that the rod-shaped body along a surface of the connector housing defining said jig insertion opening is inserted in the insertion direction parallel to the terminal receiving chamber of the connecting terminal The terminal disengagement jig described in 1.

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