JP2004095563A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the structure of a housing and to push a connection terminal from a first engagement position to a second engagement position by using a rear holder. <P>SOLUTION: The connection terminal 14 with an electric wire 13 is inserted in an inclined state into the housing like an upper stage when the rear holder 12 is located at the first engagement position, and the connection terminal 14 is located on the rear holder 12 like a lower stage. In this state, a front end edge of a stabilizer piece 24 abuts on a front locking part 52 of a terminal locking part 49 to stop advancing of the connection terminal 14, and the connection terminal 14 becomes a horizontal state from the inclined state. When the rear holder 12 is pushed toward the second engagement position, the connection terminal 14 is also pushed into a crimp part storing chamber 46. <P>COPYRIGHT: (C)2004,JPO

Description

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

で は In the conventional connector, the connection terminal housed in the housing is often prevented primarily by the terminal locking portion provided in the housing and secondarily by the rear holder engaged with the rear part of the housing. For example, as shown in FIG. 5, a rear holder 2 is inserted into the rear part of the housing 1 to the middle, and a terminal terminal hole 3 of the housing 1 accommodates a connection terminal 5 connected to an electric wire 4 at the rear part. It has become. The housing 1 is provided with a locking lance 6 for temporarily locking the terminal connection portion 5a of the connection terminal 5 housed in the terminal housing hole 3, and a covering crimp portion 5b of the connection terminal 5 is provided on the rear portion of the rear holder 2. Is formed via a hinge 8.

Here, the locking member 7 is bent outward by a hinge 8 to facilitate the insertion of the connection terminal 5 into the terminal receiving hole 3, and is returned parallel after the connection terminal 5 is inserted into the terminal receiving hole 3. It is supposed to be.

After the connection terminal 5 is inserted into the terminal receiving hole 3 and the main body 7a of the locking member 7 is pressed in parallel to the rear portion of the terminal receiving hole 3, the rear holder 2 moves forward and the locking projection 7b of the locking member 7 moves. Are fitted into the locking holes 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, the locking member 7 locks the covering crimping portion 5b of the connection terminal 5, and the connection terminal 5 is double locked. It will be.

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

An object of the present invention is to solve the above-mentioned problems and to provide a small-sized connector that has a simple structure and allows connection terminals to be inserted by a rear holder.

A connector according to the present invention for achieving the above object has a flexible terminal locking portion having a free end at a distal end for locking the connection terminal, at a rear portion of a housing accommodating the connection terminal. A rear holder is fitted, and the housing and the rear holder are engaged with each other at a first engagement position where the rear holder is inserted halfway and a second engagement position where the rear holder is sufficiently pushed into the housing. Then, in the first engagement position of the rear holder, the connection terminal is inserted into the housing in an inclined state and mounted on the rear holder, and a part of the connection terminal is locked by the terminal locking portion. Then, the rear holder is moved to the second engagement position together with the connection terminal.

According to the connector according to the present invention, since the terminal locking portion is formed on the rear holder, the structure of the housing can be simplified, and the rear holder is inserted into the connection terminal at the first engagement position with the connection terminal inserted in an inclined state. 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, showing a state in which a rear holder 12 made of synthetic resin is fitted to a rear portion of a housing 11 made of synthetic resin, and a connection terminal 14 with an electric wire 13 is housed in the housing 11. Is shown. The connection terminal 14 is formed of a conductive metal plate, and has a rectangular cylindrical 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 portions 23 are sequentially provided from the front, and two stabilizer pieces 24 facing left and right are formed at the rear of the terminal connecting portion 21.

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 formed symmetrically except for a locking mechanism 31 with a mating connector housing on the upper wall of the housing 11. The inside of the housing 11 is vertically partitioned by a partition wall 32 and left and right by a partition piece 33 to form a plurality of terminal receiving chambers 34. A gap 35 is provided between the partition wall 32 and the partition 33 so that a connecting plate of the rear holder 12 to be described later is fitted. A restricting portion 36 for restricting the forward movement of the connection terminal 14 is formed at the front end of the terminal accommodating chamber 34, and a terminal support 37 having an inclined surface 37 a on the rear surface is provided at the rear partition 32. And

Further, the interval between the partition pieces 33 prevents the lateral movement of the connection terminal 14, and the interval between the front facing wall 34 a facing the partition 32 and the terminal support 37 prevents the terminal connection portion 21 from moving up and down. I have. The distance between the intermediate facing wall 34b and the rear facing wall 34c with respect to the partition wall 32 is increased toward the rear so that the connection terminal 14 can be easily inserted into the terminal accommodating chamber 34. The rear facing wall 34c is horizontally or slightly inclined so that the covering crimping portion 23 comes into contact. A gap 38 is provided between the outermost partition 33a and the side wall so as to pass outside the side edge of the partition 32. Further, a guide window 39 for guiding a later-described guide projection of the rear holder 12 and a locking groove 40 for guiding a later-described locking projection 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 gaps 38 of the housing 11, and a connecting plate 42 that connects these side plates 41 and fits into the gaps 35 of the housing 11. Is provided with a slit 43 into which the partition wall 32 is fitted. The outer surface of the side plate 41 is provided with a locking projection 44 that fits in the locking groove 40 of the housing 11 and a guide projection 45 that fits in the guide window 39 of the housing 11. On the upper and lower surfaces of the connecting plate 42, a crimping portion accommodating chamber 46 for accommodating the protruding end 23a of the covering crimping portion 23 and an electric wire support table 47 for supporting the electric wires 13 are provided. And a partition guide groove 48 for guiding the leading end of the partition 33.

端子 Furthermore, a flexible terminal locking portion 49 having a free end and a free end is provided at a front edge of the connecting plate 42 so as to enter between the partition pieces 33 of the housing 11. The distance between the upper and lower terminal locking portions 49 is such that the partition 32 of the housing 11 enters and fits into the slit 43, and the terminal locking portion 49 can bend toward the partition 32.

Furthermore, a slope portion 49a is formed at the front end of the terminal locking portion 49 so that the terminal connection portion 21 of the inclined connection terminal 14 can easily enter the terminal storage chamber 34. A rear locking portion 50 for locking the rear end of the terminal connection 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. A guide groove 51 for guiding the stabilizer piece 24 is formed on both side surfaces of the terminal locking part 49, and the front wall of the guide groove 51 has a stabilizer piece when the rear locking part 50 locks the terminal connection part 21. The front locking portion 52 locks the front edge of the F.24.

The housing 11 and the rear holder 12 configured as described above have a first engagement position where the rear holder 12 is inserted halfway into the rear part of the housing 11 as shown in FIG. The housing 11 is engaged with the second engagement position where the housing 11 is fully pressed. At the first engagement position of the rear holder 12, the partition 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 To fit. Further, the locking projection 44 and the guide projection 45 of the rear holder 12 fit into the guide window 39 of the housing 11. Then, at the second engagement position of the rear holder 12, the guide projection 45 contacts the front wall of the guide window 39, and the locking projection 44 fits into the locking groove 40 of the housing 11.

接 続 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 at 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 opposing wall 34b, and advances while bending the terminal locking part 49 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 abuts on the front locking portion 52, and the connection terminal 14 stops moving forward, and the terminal locking portion 49 is restored. In this state, when the electric wire 13 is pressed toward the partition 32 and the connection terminal 14 is changed from the inclined state to the horizontal state, the protruding end 23a of the covering crimping part 23 fits into the crimping part 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 part of the terminal connection part 21 is formed between the front facing wall 34 a and the terminal support base 37. Fit between. At this time, the guide projection 45 of the rear holder 12 comes into contact with the front wall of the guide window 39, and the locking projection 44 of the rear holder 12 fits into the locking 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 partition pieces 33 on both sides, and the forward movement of the connection terminal 14 can be prevented by the front regulation portion 36 of the housing 11 and the terminal. The rearward movement of the connection terminal 14 can be prevented by the rearward locking portion 50 of the terminal locking portion 49 and the rear wall of the crimping portion housing chamber 46. .

Further, since the terminal locking portion 49 is formed on 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. Accordingly, the time for forming the housing 11 can be reduced, and the manufacturing cost can be reduced. Since the connection terminal 14 can be inserted in an inclined state, interference between the rear portion of the connection terminal 11 and the terminal locking portion 49 can be prevented, and the connection terminal 14 is inserted while the terminal locking portion 49 is bent. The space through which the space 14 passes can be reduced, and the size of the housing 11 can be reduced.

It is sectional drawing of an Example. It is an exploded 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 reference numerals

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

Claims (2)

A rear holder having a flexible terminal locking portion with a free end at the tip for locking the connection terminal is fitted to a rear portion of the housing for housing the connection terminal, and the housing and the rear holder are configured to be the rear holder. The first engagement position inserted halfway and the second engagement position where the rear holder is sufficiently pressed into the housing are engaged with each other, and the connection is established at the first engagement position of the rear holder. The terminal is inserted into the housing with the terminal inclined and mounted on the rear holder, a part of the connection terminal is locked by the terminal locking portion, and the rear holder is engaged with the connection terminal in the second engagement. A connector that moves to a position. 2. The terminal front locking portion according to claim 1, wherein a terminal front locking portion is formed on both sides of the terminal locking portion, and a pair of stabilizer pieces provided at an intermediate portion of the connection terminal are locked to the terminal front locking portion. connector.

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