JP3931174B2 - connector - Google Patents

Description

  The present invention relates to a connector that is used in, for example, an electric wiring of an automobile or the like and includes a rear holder for locking a connection terminal at a rear portion of a housing.

  In the conventional connector, the connection terminal accommodated in the housing is primarily prevented from being pulled out by the terminal locking portion provided in the housing and secondarily prevented by the rear holder engaged with the rear portion of the housing. For example, as shown in FIG. 5, the rear holder 2 is inserted to the middle in the rear part of the housing 1, and the connection terminal 5 with the electric wire 4 connected to the rear part is accommodated in the terminal accommodation hole 3 of the housing 1. It has become. The housing 1 is provided with a locking lance 6 that temporarily locks the terminal connection portion 5a of the connection terminal 5 accommodated in the terminal accommodation hole 3, and the rear crimping portion 5b of the connection terminal 5 is provided at the rear portion of the rear holder 2. A locking member 7 for secondary locking is formed via a hinge 8.

  Here, the locking member 7 is bent outward by a hinge 8 so that the connection terminal 5 can be easily inserted into the terminal accommodation hole 3, and is returned to the parallel after the connection terminal 5 is inserted into the terminal accommodation hole 3. It is supposed to be.

  After the connection terminal 5 is inserted into the terminal receiving hole 3, when the main body portion 7 a of the locking member 7 is parallel and press-fitted into the rear portion of the terminal receiving hole 3, the rear holder 2 moves forward and the locking protrusion 7 b of the locking member 7. Is fitted into the locking hole 9 of the housing 1, and the rear holder 2 is locked to the housing 1. At this time, the locking lance 6 locks the terminal connection portion 5a of the connection terminal 5, and the locking member 7 locks the cover crimping portion 5b of the connection terminal 5, so that the connection terminal 5 is double-locked. That's right.

  However, in the above-described conventional example, in order to facilitate the insertion of the connection terminal 5 into the terminal accommodating hole 3, the locking member 7 must be bent outward by the hinge 8, and the structure of the rear holder 2 is complicated. There is a problem of becoming.

  An object of the present invention is to provide a small connector that solves the above-described problems, has a simple structure, and allows a connection terminal to be inserted by a rear holder.

In order to achieve the above object, a connector according to the present invention forms an inclined portion extending rearward in a part of a terminal accommodating chamber of a housing for accommodating a connecting terminal, and a connecting terminal at a rear portion of the terminal accommodating chamber. A rear holder provided with a flexible terminal locking portion with a free end as a front end for locking the housing, and the housing and the rear holder have a first engagement position in which the rear holder is inserted to the middle; The rear holder is engaged with the second engagement position where the rear holder is sufficiently pushed into the housing, and the front end of the connection terminal is brought into contact with the inclined portion at the first engagement position of the rear holder with respect to the housing . the in contact with the inclined state is inserted in the housing is mounted on the rear holder the terminal locking portion engages a portion of the connecting terminal, the rear holder together with the connection terminal Characterized in that it moves to the serial second engagement position.

  According to the connector of the present invention, since the terminal locking portion is formed in the rear holder, the structure of the housing can be simplified, and the rear holder is connected so that the connection terminal is inserted in an inclined state at the first engagement position. The terminal is received and the connection terminal is pushed into the second engagement position.

The present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 is a cross-sectional view of the first embodiment, and shows a state in which a synthetic resin rear holder 12 is fitted to a rear portion of a synthetic resin housing 11 and a connection terminal 14 with an electric wire 13 is accommodated in the housing 11. Show. The connection terminal 14 is formed of a conductive metal plate, and has a rectangular tube-like terminal connection portion 21 for connecting a mating terminal (not shown), a core wire crimping portion 22 for crimping the core wire of the electric wire 13, and a coating for crimping the coating of the electric wire 13. The crimping portion 23 is sequentially provided from the front, and two stabilizer pieces 24 are formed on the rear portion of the terminal connection portion 21 so as to be opposed to the left and right.

FIG. 2 is an exploded perspective view of the housing 11 and the rear holder 12, and the upper and lower sides and the left and right sides are symmetrically formed except for the locking mechanism 31 with the mating connector housing on the upper wall of the housing 11. The interior of the housing 11 is partitioned into upper and lower portions by a partition wall 32 and left and right partitioned by a partition piece 33 to form a plurality of terminal accommodating chambers 34. Between the partition wall 32 and the partition piece 33, a gap 35 is provided in which a connection plate (described later) of the rear holder 12 is fitted. A restricting portion 36 for restricting the forward movement of the connection terminal 14 is formed at the front end portion of the terminal accommodating chamber 34, and a terminal support base 37 having an inclined surface 37 a on the rear surface is provided on the rear partition wall 32. Tei Ru.

  The interval between the partition pieces 33 prevents the connection terminal 14 from moving left and right, and the interval between the front facing wall 34a facing the partition wall 32 and the terminal support 37 prevents the terminal connection portion 21 from moving up and down. Yes. The distance between the intermediate facing wall 34b and the rear facing wall 34c with respect to the partition wall 32 is increased rearward so that the connection terminal 14 can be easily inserted into the terminal accommodating chamber 34, and the intermediate facing wall 34b is inserted when the connection terminal 14 is inserted. The rear terminal wall 34c is horizontally or slightly inclined so that the cover crimping portion 23 contacts. Between the outermost partition piece 33a and the side wall, a gap 38 that passes the outside of the side edge of the partition wall 32 is provided. Further, a guide window 39 for guiding a guide projection described later of the rear holder 12 and a lock groove 40 for introducing a lock projection described later of the rear holder 12 from the inside are formed on the side wall.

  On the other hand, the rear holder 12 is provided with side plates 41 on both sides that fit into the gap 38 of the housing 11, and a connecting plate 42 that connects these side plates 41 and fits into the gap 35 of the housing 11. A slit 43 into which the partition wall 32 is fitted is provided. On the outer surface of the side plate 41, there are provided a locking projection 44 that fits into the above-described locking groove 40 of the housing 11 and a guide projection 45 that fits into the above-described guide window 39 of the housing 11. The upper and lower surfaces of the connecting plate 42 are provided with a crimping portion accommodating chamber 46 for accommodating the protruding end portion 23 a of the covering crimping portion 23 and an electric wire support 47 for supporting the electric wire 13. A partition piece guide groove 48 for guiding the tip of the partition piece 33 is formed.

  In addition, a flexible terminal locking portion 49 is provided at the front end edge of the connecting plate 42 with a width that enters between the partition pieces 33 of the housing 11 and having a free end as a free end. The space between the upper and lower terminal locking portions 49 is such that the partition wall 32 of the housing 11 enters and fits into the slit 43, and the terminal locking portion 49 can be bent toward the partition wall 32 side.

  Further, the terminal locking portion 49 is formed with an inclined surface portion 49 a at the front end portion, so that the terminal connection portion 21 of the inclined connection terminal 14 can easily enter the terminal accommodating chamber 34. A rear locking portion 50 that locks the rear end portion of the terminal connecting portion 21 is provided at an intermediate portion of the terminal locking portion 49, and the upper surface of the rear locking portion 50 is an inclined surface 50a. And the guide groove 51 which guides the stabilizer piece 24 is formed in the both sides | surfaces of the terminal latching | locking part 49, and when the back latching part 50 latches the terminal connection part 21, the stabilizer piece is the front wall of the guide groove 51. It is set as the front latching | locking part 52 which latches the 24 front edge.

  As shown in FIG. 3, the housing 11 and the rear holder 12 configured as described above are arranged such that the rear holder 12 is inserted into the rear part of the housing 11 to the middle, and the rear holder 12 is inserted as shown in FIG. The second engaging position is fully engaged with the housing 11 and the second engaging position is engaged. At the first engagement position of the rear holder 12, the partition wall 32 of the housing 11 enters between the terminal locking portions 49 of the rear holder 12 and fits into the slit 43, and the side plate 41 of the rear holder 12 is the gap 38 of the housing 11. Fit into. Further, the locking projection 44 and the guide projection 45 of the rear holder 12 are fitted into the guide window 39 of the housing 11. At the second engagement position of the rear holder 12, the guide protrusion 45 contacts the front wall of the guide window 39, and the lock protrusion 44 fits in the lock groove 40 of the housing 11.

  The connection terminal 14 with the electric wire 13 is inserted into the housing 11 in an inclined state when the rear holder 12 is in the first engagement position. At this time, as shown in the upper part of FIG. 3, the terminal connection part 21 is pressed by the intermediate facing wall 34b and advances while the terminal locking part 49 is bent as shown in the lower part of FIG. Then, as shown in the upper part of FIG. 4, the front end edge of the stabilizer piece 24 comes into contact with the front locking portion 52, the advancement of the connection terminal 14 is stopped, and the terminal locking portion 49 is restored. In this state, when the electric wire 13 is pressed toward the partition wall 32 and the connection terminal 14 is changed from the inclined state to the horizontal state, the protruding end portion 23a of the cover crimping portion 23 is fitted into the crimping portion accommodating chamber 46 as shown in the lower part of FIG. .

  When the rear holder 12 is sufficiently pushed into the housing 11, the rear holder 12 moves to the second engagement position as shown in FIG. 1, and the front portion of the terminal connection portion 21 is located between the front facing wall 34 a and the terminal support base 37. Fit between. At this time, the guide protrusion 45 of the rear holder 12 abuts against the front wall of the guide window 39, and the lock protrusion 44 of the rear holder 12 is fitted in the lock groove 40 of the housing 11.

  In this embodiment, the swing of the connection terminal 14 can be prevented by the front facing wall 34a, the terminal support 37, and the partitioning pieces 33 on both sides, and the forward movement of the connection terminal 14 and the front restricting portion 36 of the housing 11 and the terminal. The locking portion 49 can be prevented by the front locking portion 52, and further, the rearward movement of the connection terminal 14 can be prevented by the rear locking portion 50 of the terminal locking portion 49 and the rear wall of the crimping portion accommodating chamber 46. .

Moreover, since the terminal latching part 49 was formed in the rear holder 12, the shape of the housing 11 can be simplified and the material of the housing 11 can be prevented from being limited. Therefore, the formation time of the housing 11 can be shortened, and the manufacturing cost can be reduced. Since kills with inserted connecting terminal 14 in an inclined state, it is possible to prevent interference between the rear and the terminal locking portions 49 of the connection terminal 11, for inserting the connection terminals 14 while bending the terminal locking portion 49, connected The space through which the terminal 14 passes can be narrowed, and the housing 11 can be downsized.

It is sectional drawing of an Example. It is a disassembled perspective view of a housing and a rear holder. It is an operation explanatory view. It is an operation explanatory view. It is sectional drawing of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Housing 12 Rear holder 14 Connection terminal 21 Terminal connection part 22 Core wire crimping part 23 Covering crimping part 24 Stabilizer piece 34 Terminal accommodating chamber 46 Crimping part accommodating chamber 49 Terminal latching part 50 Rear latching part 51 Guide groove 52 Front latching part

Claims (2)

An inclined portion that extends rearward is formed in a part of the terminal accommodating chamber of the housing that accommodates the connection terminal, and the distal end for locking the connection terminal at the rear portion of the terminal accommodating chamber is a free end and is flexible. A rear holder provided with a terminal locking portion having a first engaging position in which the housing and the rear holder are inserted to the middle, and a second in which the rear holder is fully pushed into the housing. The rear holder is inserted into the housing in an inclined state in which the tip of the connection terminal is in contact with the inclined portion at a first engaging position of the rear holder with respect to the housing. The connector is mounted on the terminal, the part of the connection terminal is locked by the terminal locking part, and the rear holder is moved together with the connection terminal to the second engagement position. Data.   The terminal front locking part is formed on both sides of the terminal locking part, and a pair of stabilizer pieces provided at an intermediate part of the connection terminal are locked to the terminal front locking part. connector.

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