JP6023567B2 - Terminal removal jig - Google Patents

Description

  The present invention relates to a terminal extraction jig for releasing an engagement state between a locking lance in a terminal housing chamber of a connector housing and a terminal fitting and extracting the terminal fitting from the terminal receiving chamber.

  Generally, the terminal fitting inserted into the terminal housing chamber of the connector housing is prevented from coming out of the terminal housing chamber by engaging with a locking lance provided in the terminal housing chamber. To extract the terminal fitting from the terminal accommodating chamber, the engagement with the locking lance is released and the terminal fitting is extracted from the terminal accommodating chamber. When releasing the engagement between the locking lance and the terminal fitting, a jig insertion space is provided in the connector housing in the vicinity of the terminal receiving chamber, and a long extraction jig is inserted into this jig insertion space. The engagement between the locking lance and the terminal fitting is released by bending the locking lance.

  However, as described above, the work of inserting the long extraction jig into the jig insertion space and releasing the engagement between the locking lance and the terminal fitting is performed manually by the operator. When inserting the extraction jig into the terminal, the position of the terminal extraction jig is not constant, and in the case of an unskilled worker (an operator unfamiliar with the terminal extraction operation), the insertion posture is not stable and the locking lance There is a problem that it takes time to disengage the connector from the terminal fitting.

  Therefore, Patent Document 1 proposes a terminal extraction jig that can smoothly and reliably perform an operation of displacing (moving) the extraction jig in a direction in which the engagement between the locking lance and the terminal fitting is released.

  The terminal extraction jig includes a posture stabilizing member that maintains a constant posture with respect to the connector housing by contacting the connector housing, and a release member that is displaced between the retracted position and the release position with respect to the posture stabilizing member. Configured.

JP 2001-257052 A

  However, the terminal extraction jig described in Patent Document 1 is configured by a complicated combination of posture stabilizing members, release members, and the like, and the terminal extraction jig itself needs to be designed exclusively.

  Moreover, since the terminal extraction jig | tool of patent document 1 can cancel | release only the engagement state of one terminal metal fitting and a latching lance, when releasing the engagement state of a terminal metal fitting and a latching lance, When the engagement state between the terminal fitting and the plurality of locking lances is to be released, the terminal removal jig must be inserted into the removal jig insertion space for releasing the engagement state. When trying to release the engagement with the locking lance, the workability is very poor.

  Then, this invention aims at provision of the terminal extraction jig | tool which can cancel | release engagement with several terminal metal fittings and several latching lances by one operation | work with simple structure.

The terminal pulling jig according to claim 1 is a terminal by releasing the engagement of the terminal fitting, which is engaged with the locking lance in the terminal housing chamber of the connector housing and accommodated in the retaining state, with the locking lance. a terminal extracting jig withdrawn from the accommodating chamber, and at least greater removal jig base wall than the inner diameter of the fitting hood portion of the connector housing mating connector is fitted, it is provided on the removal jig base wall A fitting base portion that fits into the fitting hood portion, and the locking lance and the terminal fitting in a state of protruding from the fitting base portion and fitting the fitting base portion into the fitting hood portion of the connector housing. Engaging with a plurality of release protrusions capable of releasing the engagement state, and a fitting guide rib provided on the extraction jig base wall portion for guiding the fitting between the connector housing and the mating connector. The fitting hook of the joint base Characterized in that it is formed by the guide piece for guiding the fitting of the parts.

  The terminal extraction jig according to claim 2 is the terminal extraction jig according to claim 1, wherein the guide pieces extend from both sides of the extraction jig base wall portion in the same direction, Two guide pieces are provided on each side of the guide piece at predetermined intervals, and the tip ends of the two guide pieces are engaged with the outer periphery of the connector housing to engage the fitting hood of the fitting base. It is connected with the connection holding | maintenance part which hold | maintains the fitting state to a part, It is characterized by the above-mentioned.

  The terminal extraction jig according to claim 3 is the terminal extraction jig according to claim 1 or 2, wherein the release protrusion includes an arm part protruding from the fitting base, and the arm. It is formed by the front-end | tip inclination part which is provided in the front-end | tip part of a part and cancels | releases the engagement state of the said latching lance and the said terminal metal fitting.

  The terminal extraction jig according to claim 4 is the terminal extraction jig according to any one of claims 1 to 3, wherein the plurality of release protrusions are formed on the connector housing. It is characterized by being provided corresponding to a punching jig insertion hole formed corresponding to each of the plurality of terminal accommodating chambers.

  According to the first aspect of the present invention, when the mating base portion is inserted until the end surface of the mating hood portion of the connector housing to which the mating connector is mated is brought into contact with the end surface of the mating connector, the release protrusion is engaged with the terminal fitting. Inserted between the stop lance and the engagement state between the terminal fitting and the locking lance is released. The fitting operation of the fitting base to the fitting hood is performed by fitting the fitting base to the fitting hood by the guide piece provided on the base wall of the removal jig engaging the fitting rib of the connector housing. Guide the direction.

  The terminal extraction jig of the present invention can be configured such that a plurality of release protrusions can be connected to a plurality of terminal fittings by one operation only by fitting a fitting base to a fitting hood used when fitting a mating connector. Since the state of engagement with the locking lances at multiple locations is released, the terminal fittings that need to be pulled out can be easily pulled by pulling the wires to which the terminal fittings need to be pulled out from the terminal accommodating chamber. Can be extracted. Also, even if there are multiple terminal fittings that need to be removed, operate the terminal removal jig one by one (by repeatedly fitting the terminal removal jig into the connector housing) to engage the terminal fitting with the locking lance. Since it is not necessary to release the state, workability is improved.

  Further, the terminal extracting jig of the present invention is a connector in which a mating base and a guide piece are provided on the base of the extracting jig, a plurality of release protrusions are provided on the mating base, and the mating connector is fitted. The structure is simple because it fits into the fitting hood of the housing.

  Therefore, the terminal extraction jig of the present invention can easily release the engagement between the plurality of terminal fittings and the plurality of locking lances with a simple operation in a single operation.

  In the terminal extracting jig according to claim 2, the terminal holding jig is held in the connector housing by the connection holding portion that connects the tip ends of the two guide pieces being locked to the outer periphery of the connector housing. Then, the engagement between the plurality of terminal fittings and the locking lances at a plurality of locations is released by the release protrusion, so that the necessary terminal fittings can be extracted from the terminal accommodating chamber, and the plurality of terminal fittings Can be extracted from each terminal accommodating chamber all at once.

  When the fitting base portion is fitted into the fitting hood portion of the connector housing, the arm extracting portion is inserted into the terminal receiving chamber or the extracting jig insertion space provided adjacent to the terminal receiving chamber. The tip inclined portion is inserted between the terminal fitting and the locking lance to release the engagement state between the terminal fitting and the locking lance. Therefore, the engagement state between the plurality of terminal fittings housed in the terminal housing chambers at the plurality of locations of the connector housing and the locking lances respectively engaged with these terminal fittings can be released by one operation. Can do.

  According to a fourth aspect of the present invention, there is provided a terminal extracting jig in which a plurality of release protrusions are respectively inserted into the jig insertion holes by fitting the fitting base portion to the fitting hood portion of the connector housing, The engagement state of can be released at once.

The connector housing and terminal extraction jig | tool of 1st Embodiment are shown, (a) is a perspective view which shows the state before fitting a extraction jig | tool to the fitting hood part of a connector housing, (b) is a extraction jig | tool. It is a perspective view which shows the state fitted to the fitting hood part of the connector housing. It is a perspective view which shows the terminal extraction jig | tool of 1st Embodiment. The state which fits the terminal extraction jig | tool in the fitting hood part of a connector housing is shown, (a) is sectional drawing which shows the state before fitting a terminal extraction jig | tool in the fitting hood part of a connector housing, (b ) Is a sectional view showing a fitted state. It is sectional drawing which shows the latching lance in the terminal storage chamber of a connector housing. The terminal extraction jig | tool of 2nd Embodiment is shown, (a) is the perspective view which looked at the terminal extraction jig from the back side, (b) is the perspective view seen from the opposite side to (a). It is a perspective view which shows the terminal extraction jig | tool of 2nd Embodiment. The connector housing and the mating connector fitted to the fitting hood portion of the connector housing are shown, (a) is an exploded perspective view showing a state before fitting, and (b) is a perspective view showing the fitted state. is there.

  Hereinafter, a terminal extraction jig according to an embodiment of the present invention will be described with reference to the drawings.

<First Embodiment>
A first embodiment will be described with reference to FIGS. 1 to 4.

  The terminal extraction jig 22 of this embodiment is used in the joint connector 1 shown in FIGS. 1 and 3, and engages with the terminal fitting 8 accommodated in the connector housing 5 of the joint connector 1 and the terminal fitting 8. The engagement state with the locking lance 12 is released so that the terminal fitting 8 can be extracted from the terminal accommodating chamber 11.

  As shown in FIGS. 1 and 3, a joint connector 1 used in the present embodiment includes a female connector 2, a male connector 3 fitted to the female connector 2, a female connector 2, and a male connector 3. And a waterproof packing 4 that is sandwiched between the two and stops water.

  The female connector 2 includes a female housing (a connector housing in the present embodiment, hereinafter referred to as “connector housing 5”) 5 and a fitting hood portion 6 provided on one side of the connector housing 5 to which the male connector 3 is fitted. A wire drawing cylinder 7 provided on the opposite side of the fitting hood 6 and connected to the terminal fitting 8, and a female terminal fitting (hereinafter simply referred to as "terminal fitting") accommodated in the connector housing 5. And 8).

  Further, on the outer periphery of both side portions of the connector housing 5, there are provided fitting guide ribs 9 and 9 for guiding the male connector in the fitting direction when the male connector 3 is fitted to the fitting hood portion 6. Yes. The fitting guide ribs 9 are formed in a flat plate shape so as to protrude from both sides of the connector housing 5 on the upper and lower sides of the both sides. When the fitting guides 19 and 19 of the male connector 3 are inserted between the fitting guide ribs 9 and 9, the female connector 2 is guided in the fitting direction. Further, a fitting holding projection 10 is provided between the fitting guide ribs 9 and 9.

  As shown in FIGS. 4 and 5, the connector housing 5 of the female connector 2 is provided with a plurality of terminal accommodating chambers 11 for accommodating the terminal fittings 8 of the wire terminals (in this embodiment, eight locations). Terminal housing chambers are formed in two stages). The terminal accommodating chamber 11 is provided with a locking lance 12 that engages with the terminal fitting 8 accommodated in the terminal accommodating chamber 11. The locking lance 12 includes a flexible locking arm 14 projecting from the inner wall 13 of the terminal accommodating chamber 11, and a locking projection 15 provided on the flexible locking arm 14 to engage the terminal fitting 8. And is formed. The flexible locking arm 14 is cantilevered on the inner wall 13 and can be bent and deformed. The locking projection 15 has a wall portion on the front end side (free end side) of the flexible locking arm 14 formed perpendicular to the flexible locking arm 14, and a wall portion on the rear end side (fixed end side). Is an inclined surface. As a result, when the terminal fitting 8 is inserted into the terminal accommodating chamber 11 from the wire drawing tube portion 7 side, the distal end portion of the terminal fitting 8 comes into contact with the inclined surface, whereby the flexible locking arm 14 is bent and deformed. When the terminal fitting 8 is completely inserted into the terminal accommodating chamber 11, the locking projection 15 is located at the position of the locking hole of the terminal fitting 8, and the locking projection 15 is moved by the elastic force of the flexible locking arm 14. 8 is inserted and engaged in the locking hole. Further, the front side of the flexible locking arm 14 is communicated with the fitting hood portion 6, and a punching jig insertion hole 16 described later is formed.

  The male connector 3 includes a male housing 17 and a male terminal fitting 18, and a main body portion of the male terminal fitting 18 is embedded in the male housing 17. The distal end side of the male terminal fitting 18 embedded in the male housing 17 protrudes outward from the male housing 17. Furthermore, fitting guides 19 and 19 are provided on both sides of the outer periphery of the male housing 17, respectively. The fitting guide 19 is formed by two guide pieces 20 and 20 and a connection holding portion 21 that connects the tip ends of these two pieces 20 and 20 as shown in FIG. 3B. In a state where the female connector 2 and the male connector 3 are fitted, the connection holding portion 21 is engaged with the fitting holding protrusion 10 of the female connector 2.

  Hereinafter, in order to extract the terminal fitting 8 of the joint connector 1 from the terminal accommodating chamber 11, the terminal extracting jig 22 for releasing the engagement state between the terminal fitting 8 in the terminal accommodating chamber 11 and the locking lance 12 will be described. To do.

Terminal extracting tool 22 of the present embodiment, as shown in FIGS. 1 and 2, the male connector (see FIG. 3) 3 is larger vent Osamu than the inner diameter of the fitting hood portion 6 of the connector housing 5 to be fitted A base wall portion 23, a fitting base portion 24 provided on the extraction jig base wall portion 23 and fitted to the fitting hood portion 6, and a fitting base portion 24 projecting from the fitting base portion 24. A plurality of release protrusions 25 capable of releasing the engagement state between the locking lance 12 and the terminal fitting 8 in a state of being fitted to the fitting hood portion 6 of the housing 5, and a removal jig base wall portion 23. And a guide piece 26 that engages the fitting guide rib 9 that guides the fitting between the connector housing 5 and the male connector 3 and guides the fitting of the fitting base 24 to the fitting hood 6. Yes.

Extracting tool base wall portion 23 is a rectangular flat plate shape and is slightly larger than the inner diameter of the fitting hood portion 6 of the connector housing 5. Thereby, in the state which fitted the terminal extraction jig | tool 22 to the fitting hood part 6, as shown in FIG.1 (b), it contacts with the front end surface 6a of the fitting hood part 6, and the connector housing of the terminal extraction jig | tool 22 is carried out. The fitting position to 5 is positioned.

  As shown in FIG. 2, the fitting base 24 formed on the one surface side of the punching jig base wall 23 is formed to have an outer diameter smaller than that of the punching jig base wall 23, and the inner diameter of the fitting hood 6. It is formed slightly smaller. As a result, the fitting base 24 is fitted into the fitting hood 6 as shown in FIGS. 1B and 4B. In this case, the step portion 23 a between the punching jig base wall portion 23 and the fitting base portion 24 is a stopper that determines the fitting position by contacting the front end surface 6 a of the fitting hood portion 6.

  A plurality of release protrusions 28 project from a fitting surface 27 on the opposite side of the fitting base 24 to the extraction jig base wall 23. These release protrusions 28 are formed by a bar-shaped arm portion 29 having a rectangular cross-section projecting from the fitting base portion 24, and a tip inclined portion 30 provided at the tip portion of the arm portion 29. The tip inclined portion 30 passes through the extraction jig insertion hole 16 provided in the connector housing 5, is inserted between the terminal fitting 8 and the locking lance 12, and the fitting hood portion 6 of the terminal extraction jig 22. The flexible locking arm 14 is bent by the fitting operation. Thereby, the engagement state between the terminal fitting 8 and the locking lance 12 is released. At this time, the terminal pulling jig 22 is guided and fitted in the normal fitting direction by fitting the guide base 26 in the fitting direction by guiding the guide piece 26 to the fitting rib 9 provided in the connector housing 5. Fit into the hood 6.

  The guide pieces 26 are extended in the same direction from both side portions of the punching jig base wall portion 23, and two extended guide pieces 26 are provided on both side portions at predetermined intervals. . Then, by inserting the guide pieces 6 and 6 between the fitting guide ribs 9 and 9 of the connector housing 5, the terminal extraction jig 22 is guided in the normal fitting direction.

  The pulling operation for pulling out the terminal fitting 8 accommodated in the terminal accommodating chamber 11 of the female housing (connector housing) 5 of the joint connector 1 by the above-described terminal extracting jig 22 will be described below.

  As shown in FIG. 1 (a), after the terminal removal jig 22 is opposed to the fitting hood 6 side of the connector housing 5 and the guide pieces 26 are inserted between the fitting guide ribs 9 and 9, respectively, The base wall part 23 and the fitting base part 24 are moved to the fitting hood part 6 side. After the fitting base 24 is inserted into the fitting hood 6, the fitting base 24 is fitted to the fitting hood 6 until the stepped portion 23 a of the extraction jig base wall 23 abuts against the front end surface 6 a. . By the fitting operation of the fitting base portion 24 to the fitting hood portion 6, the tip of the tip inclined portion 30 of the release protrusion 28 is flexible to the locking lance 12 as shown in FIGS. 4 (b) and 5. It enters between the tip of the locking arm 14 and the terminal fitting 8. When the tip inclined portion 30 enters between the tip of the flexible locking arm 14 and the terminal fitting 8, the flexible locking arm 14 is bent and deformed, and the locking projection 15 is extracted from the terminal fitting 8 and locked. The engagement state between the protrusion 15 and the terminal fitting 8, that is, the engagement state between the locking lance 12 and the terminal fitting 8 is released. The releasing operation of the engagement state between the locking lance 12 and the terminal fitting 8 by the releasing protrusion 28 is simultaneously performed by all of the plurality of releasing protrusions 28, and the terminal removal jig 22 is attached to the fitting hood portion 6. When engaged, the engagement state between the terminal fitting 8 and the locking lance 12 accommodated in the terminal accommodating chambers 11 at a plurality of locations is simultaneously released. In this state, the terminal fitting 8 can be extracted from the terminal accommodating chamber 11 by pulling the electric wire connected to the terminal fitting 8 to be taken out from the side of the electric wire drawing cylinder portion 7.

  As described above, the terminal pulling jig 22 of the present embodiment includes a plurality of mating base portions 24 fitted to the fitting hood portion 6 used when fitting the male connector 3 as a mating connector. Since the release protrusion 28 of the book releases the engagement state between the plurality of terminal fittings 8 and the plurality of locking lances 12 in one operation, it is necessary to remove the terminal fitting from the terminal accommodating chamber 11. By pulling the electric wire or the like to which 8 is connected, the terminal fitting 8 that needs to be extracted can be easily extracted.

  Even when there are a plurality of terminal fittings 8 that need to be extracted, the terminal fitting jig 22 is operated one by one (by repeatedly fitting the terminal drawing jig into the connector housing) and the terminal fitting 8 and the locking lance 12. Since it is not necessary to release the engagement state with the terminal, the workability of the terminal removal work is improved.

  In addition, the terminal extraction jig 22 of the present embodiment is provided with a fitting base 24 and a guide piece 26 on the extraction jig base wall 23 and a release projection 28 on the fitting base 24 to provide a male connector as a mating connector. The structure can be simplified because it can be fitted to the connector housing 5 so as to fit the mold connector 3. Therefore, the terminal extracting jig 22 of the present embodiment can easily release the engagement between the plurality of terminal fittings 8 and the plurality of locking lances 12 with a simple structure in a single operation.

Second Embodiment
Next, a second embodiment shown in FIGS. 6A, 6B, and 7 will be described. The same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment in FIGS.

  In the terminal extraction jig 33 of this embodiment, the tips of the guide pieces 26 and 26 are connected to each other by the connection holding portion 31, and the inside surrounded by the guide pieces 26 and 26 and the connection holding portion 31 is a rectangular through hole. Is formed.

  6 (a) and 6 (b), the connection holding portion 31 is provided between the fitting guide ribs 9 and 9 of the connector housing 5, and is connected to the connection holding portion 21 of the mating connector (male connector 3). Similarly, it engages with the fitting holding projection 10 of the connector housing 5. When the connection holding portion 31 is engaged with the fitting holding protrusion 10, the terminal removal jig 22 is held in a state of being fitted to the connector housing 5. In this state, the terminal removal jig 22 holds the terminal. The disengaged state between the terminal fitting 8 and the locking lance 12 in the chamber 11 is maintained.

  Therefore, according to the present embodiment, the same effects as those of the first embodiment can be obtained, and the connection holding portion 31 can be engaged with the fitting holding protrusion 10 of the connector housing 5, whereby the terminal removal jig 22. Is securely held by the connector housing 5. In this state, the engagement between the plurality of terminal fittings 8 and the plurality of locking lances 12 is released by the release protrusions 28, and the necessary terminal fittings 8 are removed. In addition to being able to be extracted from the terminal accommodating chamber 11, all of the plurality of terminal fittings 8 can be extracted from the respective terminal accommodating chambers 11 at once.

  The terminal extraction jig of the present invention can be used for various connectors other than the joint connector, in which the terminal fitting engaged with the locking lance is retained in the terminal accommodating chamber.

3 Male connector (mating connector)
5 Female housing (connector housing)
6 Mating Hood 8 Female Terminal Fitting (Terminal Fitting)
DESCRIPTION OF SYMBOLS 9 Guide rib for fitting 11 Terminal accommodating chamber 12 Locking lance 22, 33 Terminal removal jig 23 Removal jig base wall part 24 Fitting base part 26 Guide piece 28 Release protrusion 31 Connection base part

Claims (4)

A terminal extraction jig that releases a terminal fitting that is engaged with a locking lance in a terminal housing chamber of the connector housing and is held in a state of being released from the terminal housing chamber by releasing the engagement with the locking lance,
At least greater removal jig base wall than the inner diameter of the fitting hood portion of the connector housing mating connector is fitted,
A fitting base provided on the punching jig base wall and fitted to the fitting hood; and
A plurality of release protrusions protruding from the fitting base and capable of releasing the engagement state between the locking lance and the terminal fitting in a state where the fitting base is fitted to the fitting hood of the connector housing; ,
A guide that is provided on the base wall portion of the extraction jig and engages with a guide rib for fitting to guide the fitting between the connector housing and the mating connector, and guides the fitting of the fitting base portion to the fitting hood portion. A terminal extraction jig characterized by being formed of a piece. The terminal extraction jig according to claim 1,
The guide pieces are extended in the same direction from both sides of the punching jig base wall, and the guide pieces are provided in two pieces at predetermined intervals on both sides. The terminal pulling jigs are connected to each other by connecting and holding portions that are engaged with the outer periphery of the connector housing and hold the fitting state of the fitting base portion to the fitting hood portion. . The terminal extraction jig according to claim 1 or 2,
The release protrusion is formed by an arm portion protruding from the fitting base, and a tip inclined portion that is provided at the tip portion of the arm portion and releases the engagement state between the locking lance and the terminal fitting. A terminal removal jig characterized by being made. The terminal extraction jig according to any one of claims 1 to 3,
The plurality of release protrusions are provided corresponding to jig insertion holes formed at the time of extraction corresponding to the terminal receiving chambers at a plurality of locations formed on the connector housing, respectively. jig.

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