CN104813549A - Terminal extraction jig - Google Patents

Abstract

The terminal extraction jig (22) of the present invention includes: a base wall portion (23) that is larger than the outer diameter of the cover portion (6) of the connector housing (5) capable of fitting the counterpart connector (3); The fitting base (24), which is arranged on the base wall portion (23), fits into the cover portion (6); a plurality of release protrusions (28), which protrude from the fitting base (24), are arranged on the fitting base ( 24) In the state of fitting in the cover part (6) of the connector housing (5), the engagement state between the locking lance (12) and the terminal metal piece (8) can be released; and the guide piece (26) , which is provided on the base wall portion (23), engages with the rib (9) used to guide the fitting of the connector housing (5) and the mating connector (3), and moves toward the mating base (24) Fitting of the cover part (6) guides.

Description

Terminal extraction jig

technical field

The present invention relates to a terminal pulling jig for releasing the engaged state of a locking lance in a terminal accommodation chamber of a connector housing and a terminal metal piece and pulling out the terminal metal piece from the terminal accommodation chamber.

Background technique

Usually, the terminal fitting inserted into the terminal accommodation chamber of the connector housing is prevented from coming out of the terminal accommodation chamber by engaging with a locking lance provided in the terminal accommodation chamber. In order to pull out the terminal fitting from the terminal accommodation chamber, the engagement of the locking lance and the terminal fitting is released and the terminal fitting is pulled out from the terminal accommodation chamber. An insertion hole is provided on the connector housing close to the terminal accommodating chamber. When releasing the engagement between the locking lance and the terminal metal piece, the elongated terminal extraction jig is inserted into the insertion hole and the card The locking lance is flexed to release the engagement between the locking lance and the terminal metal piece.

The work of inserting the elongated terminal extraction jig into the insertion hole and disengaging the engagement of the locking lance and the terminal metal piece is performed manually by the operator. Therefore, inserting the terminal extraction jig into the The posture of the terminal extraction jig when it reaches the insertion hole is not constant. Therefore, in the case of an operator who is not skilled in the terminal extraction operation, there is a problem that the insertion posture of the terminal extraction jig is unstable, and it takes time and effort to disengage the locking lance and the terminal metal fitting.

Therefore, Patent Document 1 proposes a terminal extraction jig capable of smoothly and reliably displacing (moving) the terminal extraction jig in a direction to release the engagement between the locking lance and the terminal metal fitting.

The terminal extraction jig of Patent Document 1 includes: a posture stabilizing member that keeps the posture with respect to the connector housing constant by abutting against the connector housing; Unshift between positions.

prior art literature

patent documents

Patent Document 1: Japanese Patent Application Publication No. 2001-257052 (JP 2001-257052 A)

Contents of the invention

The technical problem that the present invention intends to solve

Summary of the invention

However, the terminal extraction jig of patent document 1 is comprised by combining a posture stabilization member, a release member, etc. complicatedly, and the terminal extraction jig itself needs to be designed exclusively.

In addition, the terminal extraction jig of Patent Document 1 can only release the engaged state of one terminal metal fitting and the locking lance when the engaged state of the terminal metal fitting and the locking lance is released. Therefore, in the case of wanting to release the engaged state of multiple sets of terminal metal parts and locking lances, it is necessary to insert the terminal extraction jig into the insertion hole each time. Engagement of the lance is extremely poor in workability.

Therefore, an object of the present invention is to provide a terminal extraction jig capable of disengaging a plurality of sets of terminal metal fittings and locking lances in one operation with a simple structure.

Technical solutions for problem solving

The terminal extracting jig according to the first aspect of the present invention is used to release the locking lance and the terminal metal fitting accommodated in the terminal accommodation chamber of the connector housing in a state of being engaged with the locking lance and prevented from coming off. engaging, and pulling out the terminal metal piece from the terminal accommodating chamber, wherein the terminal metal piece includes: a base wall portion, which is larger than an outer diameter of a cover portion of the connector housing capable of fitting the counterpart connector; The fitting base is provided on the base wall and fits to the cover; a plurality of release protrusions are protruded from the fitting base, and in the state where the fitting base is fitted to the cover of the connector housing, The engagement state between the locking lance and the terminal metal piece is released; and the guide piece is provided on the base wall and engages with a rib for guiding the fitting of the connector housing and the counterpart connector, for The fitting of the fitting base to the cover is guided.

According to such a configuration, when the fitting base of the terminal extraction jig is inserted until the base wall portion abuts against the end surface of the cover portion, the release protrusion is inserted between the terminal metal fitting and the locking lance, and the terminal metal fitting The engaged state with the locking lance is released. During the fitting operation of the fitting base to the cover, the guide piece engages with the rib of the connector housing to guide the fitting base in the fitting direction of the cover.

In addition, in the terminal extracting jig, only by fitting the fitting base portion to the cover portion, the plurality of release protrusions can release the engaged state of the plurality of sets of terminal metal fittings and locking lances with one operation. Therefore, by pulling the electric wire or the like connected to the terminal fitting that needs to be pulled out from the terminal accommodation chamber, the terminal fitting that needs to be pulled out can be easily pulled out. In addition, even when there are a plurality of terminal metal fittings to be pulled out, there is no need to operate the terminal pull-out jigs one by one (repeatedly operate the terminal pull-out jigs and fit them into the connector housing) to release the terminal metal fittings. The engaged state with the locking lance improves workability.

In addition, since the terminal extraction jig is provided with a fitting base and a guide piece on the base wall, and a plurality of release protrusions are provided on the fitting base, it is fitted to the connector housing so that the mating connector is fitted. The structure of the cover is simple.

Therefore, the terminal extracting jig can easily disengage a plurality of sets of terminal metal fittings and locking lances in one operation with a simple structure.

It is also possible that the guide pieces are extended in the same direction from both sides of the base wall portion, two guide pieces are respectively arranged at predetermined intervals on both sides, and the front ends of the two guide pieces are connected and held by each other. The connection holding part is locked to the outer periphery of the connector housing to maintain the fitting state of the fitting base part to the cover part.

With such a configuration, the terminal extracting jig is held by the connector housing by locking the connection holding portion connecting the front end sides of the two guide pieces to the outer periphery of the connector housing. In this state, in the state where the engaged state of the plurality of sets of terminal metal fittings and locking lances is released by the release protrusion, the necessary terminal metal fittings can be pulled out from the terminal accommodating chamber, and multiple All the terminal metal fittings are pulled out from each terminal accommodating chamber at one time.

Preferably, the releasing protrusion includes: an arm protruding from the fitting base; and a front end inclined portion provided at the front end of the arm to release the engaged state of the locking lance and the terminal metal fitting.

According to such a configuration, when the fitting base is fitted into the cover portion of the connector housing, the front-end inclined portion is inserted between the terminal metal fitting and the locking lance, and the connection between the terminal metal fitting and the locking lance is released. Engaged state. Therefore, it is possible to release the engaged state between the plurality of terminal metal fittings accommodated in the terminal accommodation chambers at a plurality of locations of the connector housing and the locking lances respectively engaged with these terminal metal fittings by one operation.

Preferably, the release protrusion is provided corresponding to the insertion hole formed corresponding to the terminal accommodation chamber.

With such a configuration, by fitting the fitting base into the cover portion of the connector housing, the release protrusions are respectively inserted into the jig insertion holes, and the engaged state of the plurality of sets of terminal metal fittings and locking lances can be released at once. .

Description of drawings

Fig. 1(a) is a perspective view showing the state before the first connector and the second connector are fitted, and Fig. 1(b) is a perspective view showing the state where the second connector is fitted into the cover portion of the first connector. stereogram.

Fig. 2(a) is a perspective view showing a state before the terminal extracting jig of the first embodiment is fitted into the cover portion of the first connector, and Fig. 2(b) is a perspective view showing the terminal extracting jig fitted in A perspective view of the state of the cover portion of the first connector.

FIG. 3 is a perspective view showing the terminal extraction jig of the first embodiment.

4( a ) is a cross-sectional view showing a state before the terminal extraction jig of the first embodiment is fitted to the cover portion of the connector housing, and ( b ) is a cross-sectional view showing a fitted state.

5 is a cross-sectional view showing locking lances in the terminal accommodation chamber of the connector housing.

Fig. 6(a) is a perspective view of a state in which the terminal extraction jig of the second embodiment is fitted in the cover portion of the first connector viewed from the back side, and Fig. 6(b) is viewed from the opposite side to Fig. 6(a) Observational stereogram.

7 is a perspective view showing a terminal extraction jig according to a second embodiment.

Detailed ways

Hereinafter, the terminal extracting jig which concerns on embodiment of this invention is demonstrated based on drawing.

<First Embodiment>

1st Embodiment is demonstrated using FIGS. 1-5.

The terminal extraction jig 22 of the first embodiment is used in the connector 1 shown in FIG. The engaged state of the lance 12 is stopped, and the terminal metal piece 8 is pulled out from the terminal accommodation chamber 11 .

As shown in Figure 1, the connector 1 includes: a first connector 2; a second connector 3 as a counterpart connector, which is fitted with the first connector 2; and a waterproof gasket 4, which is clamped on the Waterproofing is performed between the first connector 2 and the second connector 3 .

The first connector 2 includes: a connector housing 5; a cover 6 provided on one end side of the connector housing 5 and fitted to the second connector 3; and a wire lead-out cylinder 7 provided on the connector housing. The other end side of the body 5 and lead out the electric wire connected to the terminal metal fitting 8 ;

Ribs 9 , 9 are provided on the outer peripheries of both side portions of the connector housing 5 , and the ribs 9 , 9 guide the second connector 3 in the fitting direction when the second connector 3 is fitted to the cover portion 6 . The ribs 9 , 9 are flat plate-shaped and protruded from both side parts of the connector housing 5 on the upper and lower side parts. The second connector 3 is guided in the fitting direction by inserting the fitting guides 19 , 19 of the second connector 3 between the ribs 9 , 9 . Fitting and holding protrusions 10 protrude between the ribs 9 , 9 .

As shown in FIGS. 4 and 5 , the connector housing 5 is provided with terminal accommodating chambers 11 at multiple locations for accommodating the terminal fittings 8 at the ends of electric wires. In the first embodiment, eight terminal accommodating chambers are formed in two layers. The locking lance 12 which engages with the terminal metal fitting 8 accommodated in the terminal accommodation chamber 11 is provided in the terminal accommodation chamber 11. As shown in FIG. The locking lance 12 includes: a flexible locking arm 14 protruding from the inner wall 13 of the terminal accommodation chamber 11; and a locking protrusion 15 arranged on the flexible locking arm 14 and locked with the terminal metal piece 8 combine. The flexible locking arm 14 is supported on the inner wall 13 by a cantilever, and can be bent and deformed. The front end (free end side) wall of the flexible locking arm 14 of the locking protrusion 15 is formed perpendicular to the flexible locking arm 14 , and the rear end (fixed end side) wall is an inclined surface. Thus, when the terminal metal fitting 8 is inserted into the terminal accommodating chamber 11 from the side of the electric wire drawing-out tube 7 , the flexible locking arm 14 is flexed and deformed because the front end of the terminal metal fitting 8 abuts against the inclined surface. If the terminal metal piece 8 is completely inserted into the terminal accommodation chamber 11, the locking protrusion 15 is located at the position of the locking hole of the terminal metal piece 8, and under the action of the elastic force of the flexible locking arm 14, the locking protrusion 15 is inserted · Engaged in the locking hole of the terminal fitting 8 . The front side of the flexible locking arm 14 communicates with the cover portion 6 to form an insertion hole 16 .

The second connector 3 includes a housing 17 and a male terminal fitting 18 . The main body portion of the male terminal metal fitting 18 is embedded in the housing 17 . The front end side of the male terminal metal fitting 18 embedded in the case 17 protrudes to the outside of the case 17 . Fitting guides 19 , 19 are respectively provided on both sides of the outer periphery of the case 17 . The fitting guide 19 includes two guide pieces 20 , 20 , and a connection holding portion 21 that connects front end sides of the guide pieces 20 , 20 to each other. As shown in FIG. 1( b ), in a state where the first connector 2 and the second connector 3 are fitted, the connection holding portion 21 is engaged with the fitting holding protrusion 10 of the first connector 2 .

Next, terminal extraction in which the engagement state between the terminal metal fitting 8 and the locking lance 12 in the terminal housing chamber 11 is released in order to pull out the terminal metal fitting 8 of the connector 1 from the terminal housing chamber 11 will be described. Fixture 22.

As shown in FIGS. 2 and 3 , the terminal extraction jig 22 of the first embodiment includes: a base wall portion 23 whose outer diameter is larger than that of the cover portion 6; Fitted with the cover part 6; a plurality of release protrusions 25 protruding from the fitting base part 24 and capable of releasing the locking spear in the state where the fitting base part 24 is fitted with the cover part 6 of the connector housing 5 The engaged state of the piece 12 and the terminal metal piece 8; and the guide piece 26, which is provided on the base wall portion 23 and engages and guides the rib 9 that guides the fitting of the connector housing 5 and the second connector 3 Fitting of the fitting base 24 to the cover 6 .

The base wall portion 23 has a rectangular flat plate shape and is formed slightly larger than the outer diameter of the cover portion 6 . Thus, in the state where the terminal extracting jig 22 is fitted to the cover portion 6, as shown in FIG. The fitting position to the connector housing 5 is positioned.

The fitting base portion 24 formed on one side of the base wall portion 23 has an outer diameter slightly smaller than the outer diameter of the base wall portion 23 and is formed slightly smaller than the inner diameter of the cover portion 6 . Thereby, the fitting base part 24 is fitted in the cover part 6 as shown in FIG.2(b), 4(b). In this case, the base wall portion 23 and the stepped portion 23a of the fitting base portion 24 abut against the front end surface 6a of the cover portion 6 to serve as stoppers for determining the fitting position.

A plurality of release protrusions 28 protrude from the fitting surface 27 of the fitting base 24 on the opposite side to the base wall portion 23 . Each release protrusion 28 is formed of a rod-shaped arm portion 29 with a rectangular cross-section protruding from the fitting base portion 24 , and a tip inclined portion 30 provided at the tip portion of the arm portion 29 . The front end inclined portion 30 passes through the insertion hole 16 provided in the connector housing 5, is inserted between the terminal metal fitting 8 and the locking lance 12, and is made by fitting the terminal pulling jig 22 to the cover portion 6. The flexible latch arm 14 flexes. As a result, the engaged state between the terminal metal fitting 8 and the locking lance 12 is released. At this time, the rib 9 provided on the connector housing 5 guides the guide piece 26 of the terminal extraction jig 22 in the fitting direction, so that the fitting base 24 of the terminal extraction jig 22 is guided in the regular fitting direction. and fitted to the cover portion 6 .

The guide pieces 26 extend in the same direction from both side portions of the base wall portion 23 . Two guide pieces 26 are provided on both sides at predetermined intervals. By inserting the guide pieces 26 , 26 between the ribs 9 , 9 of the connector housing 5 , the terminal extraction jig 22 is guided in a regular fitting direction.

Next, the extraction operation of extracting the terminal fitting 8 accommodated in the terminal accommodation chamber 11 by using the terminal extraction jig 22 will be described below.

As shown in Fig. 2 (a), make the terminal pull-out jig 22 face the cover portion 6 side of the connector housing 5, insert the guide pieces 26 between the ribs 9 and 9, and then insert the base wall portion 23 and the insert. The joint base 24 moves toward the cover 6 side. After the fitting base 24 is inserted into the cover 6 , the fitting base 24 is further fitted into the cover 6 until the stepped portion 23 a of the base wall 23 abuts on the front end surface 6 a. By the fitting action of the fitting base 24 to the cover portion 6, as shown in FIGS. Between the front end and the terminal metal piece 8. After the front end inclined portion 30 enters between the front end of the flexible locking arm 14 and the terminal metal piece 8, the flexible locking arm 14 flexes and deforms, and the locking protrusion 15 is pulled out from the terminal metal piece 8, and the locking protrusion 15 and the terminal metal piece 8 The engaged state of the terminal metal fitting 8 , that is, the engaged state of the locking lance 12 and the terminal metal fitting 8 is released. If the release of the engaged state of the locking lance 12 and the terminal metal fitting 8 by the release projection 28 is performed simultaneously by a plurality of release projections 28, the terminal extraction jig 22 is fitted into the cover. 6, the engaged state of the terminal fittings 8 accommodated in the terminal accommodation chambers 11 at multiple locations and the locking lances 12 is simultaneously released. In this state, the terminal metal fitting 8 can be pulled out from the terminal accommodating chamber 11 by pulling the electric wire connected to the terminal metal fitting 8 to be taken out from the wire drawing-out cylindrical portion 7 side.

As described above, the terminal extracting jig 22 of the first embodiment only makes the fitting base 24 fit into the cover portion 6 used when fitting the second connector 3 as the mating connector, so that a plurality of The release protrusion 28 can release the engaged state of the plurality of terminal metal fittings 8 and the locking lances 12 at a plurality of locations with one operation. Therefore, by pulling the electric wire or the like connected to the terminal metal fitting 8 that needs to be pulled out from the terminal accommodation chamber 11 , the terminal metal fitting 8 that needs to be pulled out can be easily pulled out.

In addition, even when there are a plurality of terminal fittings 8 to be extracted, it is not necessary to operate the terminal extracting jigs 22 one by one (repeatedly operate the terminal extracting jigs 22 and fit them into the connector housing 5). Since the engaged state of the terminal metal fitting 8 and the locking lance 12 is released, the workability of the terminal extraction operation is improved.

In addition, the terminal pull-out jig 22 of the first embodiment is configured such that a fitting base 24 and a guide piece 26 are provided on a base wall 23, and a release protrusion 28 is provided on the fitting base 24, so that it can be used as a mating connector. The second connector 3 is fitted to the connector housing 5 in such a way that the second connector 3 is fitted, so the structure is simple. Therefore, the terminal extracting jig 22 of the first embodiment can easily disengage the plurality of sets of terminal fittings 8 and locking lances 12 in one operation with a simple structure.

<Second Embodiment>

Next, the second embodiment shown in FIGS. 6( a ), 6 ( b ), and 7 will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment in FIGS. 6( a ), 6 ( b ), and 7 . illustrate.

In the terminal extraction jig 33 according to the second embodiment, the leading ends of the guide pieces 26, 26 are connected by the connection holding portion 31, and the inside surrounded by the guide pieces 26, 26, and the connection holding portion 31 is formed as a rectangular through hole. .

As shown in Figure 6 (a), 6 (b), the connection holding part 31 is provided between the ribs 9 and 9 of the connector housing 5, and is the same as the connection holding part 21 of the second connector 3, and is connected with the connector housing. 5 fits and holds the protrusion 10 engaged. When the connection holding portion 31 is engaged with the fitting holding protrusion 10 , the terminal extraction jig 33 is held in a state of being fitted to the connector housing 5 . In this state, the disengaged state of the terminal fitting 8 and the locking lance 12 in the terminal accommodation chamber 11 is maintained by the terminal extracting jig 33 .

Therefore, according to the second embodiment, the same effect as the first embodiment is obtained, and the connection holding portion 31 is engaged with the fitting holding protrusion 10 of the connector housing 5, so that the terminal pull-out jig 33 is reliably held on the connector housing 5. Connector housing 5. In this state, in the state where the engaged state of the plurality of sets of terminal metal fittings 8 and the locking lance 12 is released by the release protrusion 28, the necessary terminal metal fittings 8 can be pulled out from the terminal accommodating chamber 11, In addition, all the terminal fittings 8 can be pulled out from the respective terminal accommodation chambers 11 at once.

Industrial Applicability

The terminal extraction jig of the present invention can be used for various connectors in which the terminal metal fittings engaged with the locking lances are prevented from coming off and accommodated in the terminal accommodating chambers.

Claims (4)

1. a terminal extracts fixture, for solution divided by the engaging being sticked in locking spear and the state of anticreep and being contained in the terminal metal piece in the terminal accommodating chamber of connector shell and described locking spear, and described terminal metal piece is extracted in described terminal accommodating chamber, the feature that described terminal extracts fixture is

Comprise:

Basal wall portion, it is larger than the external diameter in the cover portion of the described connector shell that the other side's connector can be made to be fitted together to;

Chimeric base portion, it is arranged at described basal wall portion, can be fitted to described cover portion;

Remove projection for many, it projects from described chimeric base portion, under the state that described chimeric base portion is embedded in described cover portion, can remove the fastening state of described locking spear and described terminal metal piece; And

Guide plate, it is arranged at described basal wall portion, engages, for guiding to described the chimeric of cover portion described chimeric base portion with the rib being arranged at described connector shell for guiding described connector shell and the chimeric of described the other side's connector.

2. terminal as claimed in claim 1 extracts fixture,

Described guide plate is extended towards equidirectional from the both sides in described basal wall portion,

Described guide plate is respectively provided with 2 respectively at predetermined spaced intervals in both sides,

The front end of each 2 guide plates is linked by link maintaining part each other, and described link maintaining part is locked to the periphery of described connector shell and keeps described chimeric base portion to the chimerism in described cover portion.

3. terminal as claimed in claim 1 or 2 extracts fixture, it is characterized in that,

Remove projection described in each to comprise: arm, it projects from described chimeric base portion; Front end rake, its leading section being arranged at described arm is to remove the fastening state of described locking spear and described terminal metal piece.

4. the terminal as described in any one of claim 1-3 extracts fixture, it is characterized in that,

Described releasing projection with correspond to described terminal accommodating chamber and the patchhole formed is arranged accordingly.