JP2014096227A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electric connector capable of certainly keeping a temporary locking state.SOLUTION: A rear holder 2 is inserted in a housing 1 from a rear side, and temporarily locked at an intermediate position. In the temporary locking state, a partitioning plate 21 and a locking lance 22 of the rear holder 2 are inserted to the intermediate position of the housing 1, and a temporary locking claw of the rear holder 2 is engaged with a temporary locking groove of the housing 1 to be positioned in temporary locking. As a locking arm 14 is in a rising state and a tip end portion of an abutting portion 15 abuts on an opposite abutting portion 24 of the rear holder 2, the rear holder 2 does not enter the housing 1 to shift to a final locking state, even if unexpected impact is applied on the rear holder 2 or the housing 1.

Description

  The present invention relates to an electrical connector including a housing in which a rear holder is disposed rearward.

  In order to accommodate the connection terminal in the housing and fix the connection terminal in the housing, it is common to use a locking lance provided in the housing. In order to further secure this locking, a rear holder is disposed at the rear part of the housing, and a part of the connection terminal is locked to prevent rearward disconnection.

  In addition, as disclosed in, for example, Patent Document 1, many cases are known in which a locking lance is provided on the rear holder. This is because the connector is also miniaturized with the recent miniaturization of the connection terminal, and it becomes difficult to form the locking lance in the housing by injection molding, so the locking lance is provided in the rear holder.

JP 2001-35580 A

  When using a rear holder provided with this locking lance, assemble the rear holder in a temporarily locked state with respect to the housing, attach the connection terminal to the rear holder and lock it with the locking lance, and then push the rear holder into the housing. Usually, the main locking state is set.

  However, assembling the rear holder in a temporarily locked state with respect to the housing and locking the connection terminal with the locking lance of the rear holder are not necessarily performed simultaneously. That is, the connection terminal may be mounted after the rear holder is assembled to the housing in a temporarily locked state and then transported to another place.

  For this reason, force is sometimes applied during transportation, the rear holder is pushed in, and the main locking state may occur without mounting the connection terminal to the housing. In this case, since the connection terminal cannot be mounted unless the rear holder is in the temporarily locked state, the work that has to be released from the fully locked state and returned to the temporarily locked state is unavoidable.

  An object of the present invention is to solve the above-described problems and provide an electrical connector that can reliably maintain a temporarily locked state.

  In order to achieve the above object, an electrical connector according to the present invention is an electrical connector in which a rear holder is attached to a rear portion of a housing, and a locking arm having elasticity is provided from the front of the housing toward the rear holder at the rear. A locking portion is provided at the distal end of the locking arm, the rear holder is provided with a facing abutting portion that abuts against the abutting portion, and a connection terminal is inserted into the housing via the rear holder. In the temporarily locked state of the rear holder, a part of the rear holder is fitted in the housing, and the tip of the abutting portion abuts against the tip of the opposing abutting portion, whereby the rear holder is moved into the housing. No further entry is possible, and the transition from the temporarily locked state to the fully locked state in which the connection terminal is moved to a normal position in the housing. At the time of the tablet to release the abutment of the stop arm drop to the to the opposing abutting portions of said abutting portions, characterized in that said rear holder has a pushable into the housing.

  The electrical connector according to the present invention prevents the abutting portion of the locking arm of the housing from striking against the opposing abutting portion of the rear holder in the temporarily locked state, thereby preventing the rear holder from shifting to the fully locked state.

It is a perspective view of a housing. It is sectional drawing. It is a perspective view of a rear holder. It is sectional drawing. It is a perspective view of the state where the rear holder was temporarily locked to the housing. It is sectional drawing. It is sectional drawing of the state which accommodates a connection terminal in a temporary latching state. It is explanatory drawing in the case of shifting a rear holder with respect to a housing from a temporary latching state to a final latching state. It is a perspective view of the state where the rear holder was fully locked to the housing. It is sectional drawing. It is sectional drawing of a fitting state with the other party housing.

The present invention will be described in detail based on the embodiments shown in the drawings.
The electrical connector of the present embodiment is a type in which a female connection terminal is mounted, and is composed of a housing made of synthetic resin and a rear holder, and the rear holder is fitted to the rear portion of the housing.

  1A is a perspective view of the housing 1 as viewed from the front, FIG. 1B is a perspective view of the housing 1 as viewed from the rear, and FIG. 2 is a sectional view thereof. Within the housing 1, there are provided vertically symmetrical terminal accommodation holes 10 for accommodating female connection terminals in two upper and lower rows and 12 rows in each row. The front wall 11 of the terminal receiving hole 10 is provided with an opening 11a into which the flat-blade connection end of the mating female connection terminal is inserted, and further communicates with the housing 1 above or below the opening 11a. A jig insertion hole 12 is provided. Furthermore, a lance accommodation groove 13 into which a part of a locking lance described later is inserted is formed on the upper and lower wall portions of the housing 1.

  Above the housing 1, there is provided a flat and wide locking arm 14 that is elastic from the front to the rear, and the end of the locking arm 14 is provided with two strip-shaped connecting arms 14 a. Similarly, the abutting portion 15 having a wide structure is often provided upward. The front end surfaces of both sides of the abutting portion 15 are often flat abutting surfaces 15 a, an upward stepped portion 16 is provided on both sides of the abutting portion 15, and further on the surface of the intermediate portion of the locking arm 14. Is provided with a locking claw 17 for locking the counterpart housing.

  Main locking long holes 18 for main locking with respect to the rear holder are provided at a total of four positions on the upper and lower sides of the frame portion at the rear of the housing 1, and temporary locking grooves 19 are provided on both the left and right sides of the housing 1. Is formed.

  3A is a perspective view seen from the front of the rear holder 2, FIG. 3B is a perspective view seen from the rear, and FIG. 4 is a cross-sectional view thereof. In the rear part of the frame-shaped rear holder 2, terminal insertion holes 20 corresponding to the terminal receiving holes 10 of the housing 1 are arranged vertically symmetrically in 12 levels and vertically arranged, and a partition is formed between the upper and lower terminal insertion holes 20. A plate 21 is formed. Further, in front of each terminal insertion hole 20, a locking lance 22 for locking the connection terminal in each of the terminal receiving holes 10 of the housing 1 protrudes forward and symmetrically. The locking lance 22 has elasticity, and a narrow tip portion 22a is provided at the tip, and a locking portion 22b is provided at an intermediate portion.

  On the housing 1 side of the upper part of the rear holder 2, there are provided two opposed abutment portions 24 that abut against the abutment surface 15a of the abutment portion 15 in the temporarily locked state, and a locking arm is provided on the back side of the opposed abutment portion 24. A downwardly inclined surface portion 25 that engages with the 14 step portions 16 is formed. Furthermore, a total locking claw 26 for final locking with the housing 1 is provided at a total of four locations above and below the rear holder 2, and temporary locking claw for temporary locking is provided on the left and right sides of the partition plate 21. 27 is provided.

  FIG. 5 is a perspective view of the rear holder 2 temporarily locked to the housing 1, and FIG. 6 is a sectional view thereof. The rear holder 2 is inserted into the housing 1 from the rear and temporarily locked at an intermediate position. In this temporarily locked state, the partition plate 21 and the locking lance 22 of the rear holder 2 are inserted to the intermediate position of the housing 1, and the temporarily locking claw 27 of the rear holder 2 engages with the temporary locking groove 19 of the housing 1. Thus, the temporary locking is performed.

  In the temporarily locked state, the locking arm 14 is in a raised state, and the abutment surface 15 a of the abutment portion 15 abuts against the opposed abutment portion 24 of the rear holder 2. Therefore, even if an unexpected impact is applied to the rear holder 2 or the housing 1, the rear holder 2 does not enter the housing 1 due to the resistance of the locking arm 14 and the connecting arm 14a and shift to the fully locked state.

  Here, as shown in FIG. 7, the female connection terminal 31 is inserted into the terminal accommodating hole 10 from the rear through the terminal insertion hole 20 of the rear holder 2. Since the internal structure of the terminal receiving hole 10 of the housing 1, the locking lance 22 and the like are provided vertically symmetrically, the connection terminal 31 inserted into the upper stage of the terminal insertion hole 20 and the connection terminal 31 inserted into the lower stage are as follows. The direction is symmetric vertically.

  In FIG. 7, the connection portion 32 that is located at the front end of the connection terminal 31 and has a movable contact piece inside is pushed up the locking lance 22 in the upper stage and inserted into the inside, and the locking lance 22 is pushed down in the lower stage. It shows the state of approaching. An electric wire 33 is connected to the connection terminal 31.

  When the connecting portion 32 of the connection terminal 31 passes through the locking lance 22, the locking lance 22 is restored and the rear end edge of the connecting portion 32 is locked by the locking portion 22 b of the locking lance 22. Accordingly, when all the connection terminals 31 are locked by the locking lance 22 as shown in the upper part of FIG. 7, the mounting of the connection terminals 31 in the temporarily locked state of the rear holder 2 is completed. In this state, since the abutting portion 15 of the locking arm 14 is located below the opposing abutting portion 24, a damage accident such as an occasional lifting of the locking arm 14 is prevented.

  8A and 8B are explanatory views when the rear holder 2 is inserted into the housing 1 from the temporarily locked state and shifted to the fully locked state. When the abutting portion 15 at the tip of the locking arm 14 is pushed down with a finger and lowered to release the abutting of the abutting portion 15 against the opposing abutting portion 24 and the rear holder 2 is pushed into the housing 1, The pawl 27 is disengaged from the temporary locking groove 19, and the stepped portion 16 of the abutting portion 15 passes through the opposing abutting portion 24.

  At the time of this transition, the rear end edge of the connection portion 32 of the connection terminal 31 is pushed by the locking portion 22b of the locking lance 22 and pushed to the front end in the terminal accommodating hole 10, and the front wall 11 prevents the front disconnection. The front end 22 a of the locking lance 22 is located in the lance receiving groove 13 of the housing 1. Then, the main locking claw 26 of the rear holder 2 is fitted into the main locking long hole 18 of the housing 1 to maintain the main locking state. Further, the step portion 16 of the abutting portion 15 engages with the inclined surface portion 25 of the opposing abutting portion 24, and becomes a resistance when the rear holder 2 is pulled out from the housing 1.

  Even with one of the connection terminals 31, as shown in the lower part of FIG. 7, the connection terminal 31 is not completely inserted through the locking lance 22, and the rear holder 2 is pushed into the final locking state. It may be. In this case, the narrow end portion 22 a of the locking lance 22 enters the lance receiving groove 13 of the housing 1, but the other portion of the locking lance 22 is caught by the inlet portion of the lance receiving groove 13 and the rear holder 2 Pushing is impossible. Accordingly, it is possible to know a problem of insertion of the connection terminal 31 with the transition from the temporary locking to the final locking state.

  FIG. 9 is a perspective view of the main locking state, and FIG. 10 is a cross-sectional view thereof. In this main locking state, the connection terminal 31 is pushed to the normal position of the front wall 11 of the terminal receiving hole 10 of the housing 1 and opened. The insertion end of the counterpart connection terminal can be received via the portion 11a.

  If necessary, when the rear holder 2 is removed from the housing 1, it can be pulled out by removing the main locking claw 26 of the rear holder 2 from the main locking long hole 18 of the housing 1. The step portion 16 of the abutment portion 15 slides off the slope portion 25 although there is a slight resistance to the pulling of the rear holder 2.

  When taking out the connection terminal 31 accommodated from the housing 1, a dedicated jig is inserted into the inside from the jig insertion hole 12 on the front surface of the housing 1, the locking portion 22 b of the locking lance 22 of the rear holder 2 is moved, If the locking lance 22 is removed from the connection portion 32, the connection terminal 31 can be pulled out behind the rear holder 2.

  Further, the electrical characteristics of each connection terminal 31 are inspected by inserting a detection jig in the same manner from the jig insertion hole 12 and bringing it into contact with the connection terminal 31.

  FIG. 11 is a cross-sectional view showing a state in which the housing 1 is fitted to the mating housing 41. The mating housing 41 is fitted with a male connection terminal 42 that enters and connects to the female connection terminal 31 in the housing 1. A locking claw 43 for engaging with the locking claw 17 of the housing 1 is provided.

  The housing 1 enters the hood portion 44 of the counterpart housing 41, and the connection terminals 31 and 42 are fitted to each other to be electrically connected. When the housings 1 and 41 are fitted to each other, after the locking arm 14 bends downward, the locking claw 17 once sinks downward, and then passes under the locking claw 43 of the counterpart housing 41. It is restored and engaged with the locking claw 43 to be locked. Due to this locking, the housing 1 and the counterpart housing 41 are not dissociated at any time.

  When releasing the lock, when the locking claw 17 is depressed by pushing the abutting portion 15 of the rear holder 2 downward with a finger, the engagement between the locking claw 17 and the locking claw 43 is performed. Come off. Therefore, the housing 1 may be pulled out from the counterpart housing 41.

  The present invention is also applicable to an electrical connector to which a male connection terminal is attached, and a rear holder having no locking lance can also be used.

DESCRIPTION OF SYMBOLS 1 Housing 2 Rear holder 10 Terminal accommodation hole 11 Front wall 14 Locking arm 15 Abutting part 17 Locking claw 22 Locking lance 24 Opposing abutting part 31 Female connection terminal 41 Counterpart housing

Claims (6)

  An electrical connector having a rear holder attached to a rear portion of a housing, wherein a locking arm having elasticity is provided from the front of the housing to the rear holder at the rear, and an abutting portion is provided at a tip of the locking arm. Includes a facing abutting portion that abuts against the abutting portion, and in a temporarily locked state of the rear holder with respect to the housing for inserting a connection terminal into the housing via the rear holder, a part of the rear holder is The rear holder is fitted into the housing and the front end of the abutting portion abuts against the front end of the opposed abutting portion, so that the rear holder cannot further enter the housing, and the connection from the temporarily locked state is made. In the transition to the final locking state in which the terminal is moved to the normal position in the housing, the locking arm is lowered and the abutting portion is moved to the normal position. To release the abutment of the direction abutting portion, the electrical connector, characterized in that said rear holder has a pushable into the housing.   The electrical connector according to claim 1, wherein the opposing abutting portions are provided at two positions above the main body of the rear holder.   The electrical connector according to claim 2, wherein the abutting portion has a wide structure and abuts against the opposing abutting portion by two abutting surfaces provided at both ends of the abutting portion.   The abutting portion is provided with a stepped portion, and a slope portion is provided on the back side of the opposed abutting portion, and in the fully locked state, the stepped portion dives the opposing abutting portion as the locking arm is lowered. The electrical connector according to any one of claims 1 to 3, wherein the electrical connector engages with the slope portion.   The electrical connector according to any one of claims 1 to 4, wherein the locking arm is provided with a locking claw for engaging with a mating housing.   The electrical connector according to any one of claims 1 to 5, wherein a locking lance for locking the connection terminal is formed on the rear holder.

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