JP3301584B2 - Electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector, and more particularly to an electrical connector using a secondary locking member suitable for terminating a plurality of electric wires per terminal.

[0002]

2. Description of the Related Art As an electric connector with a secondary locking member, for example, an electric connector disclosed in Japanese Utility Model Laid-Open No. 1-64873 as shown in FIG. 10 is known. The terminal passage 2 of the insulating housing 202 of the electric connector 200
A terminal 208 that terminates the electric wire 206 is disposed at 04. The terminal 208 is a projection 21 of the housing lance 210.
Primary locking with 2. Further, the terminal 208 is connected to the terminal passage 2.
The shoulder portion 216 of the terminal 208 is locked by the secondary locking member 220 that is inserted from above the rear part of the terminal 04 and moves downward.

[0003]

SUMMARY OF THE INVENTION Conventional electrical connector 200
Since the secondary locking member 220 is inserted from above the terminal passage 204, the two electric wires 206
In the case of being crimped on the electric wire 08, the upper electric wire and the secondary locking member interfere with each other.

[0004] In addition, even in the case of a single electric wire, if the outer shape of the coating is large, there is a possibility that interference will occur similarly. Therefore, in such an application, it is difficult to provide a secondary locking member.

The present invention has been made in view of the above points, and has a secondary locking member that can be attached to an electric connector having a plurality of electric wires terminated to one terminal without interfering with the electric wires. An object is to provide an electrical connector.

[0006]

SUMMARY OF THE INVENTION An electrical connector according to the present invention includes a terminal having a crimping portion to be crimped to an electric wire, a housing for holding the terminal in a terminal passage, and a terminal mounted on the housing and associated with the terminal. A secondary locking member for stopping the terminal to prevent the terminal from coming off, wherein the secondary locking member engages with the housing, and a stopper capable of contacting a rear end of the terminal. An upper surface of a terminal receiving port communicating with the terminal passage of the housing, the upper surface of the terminal receiving port communicating with the electric wire extending from the crimp portion of the terminal when the secondary locking member is mounted on the housing. A space is formed therebetween, and the stopper of the secondary locking member is rearward from the crimping portion on the bottom side of the terminal.
Abutting on the rear end of the terminal extending to the end.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a plan view of an insulating housing 2 of an electric connector 1 of the present invention. The housing 2 has two rectangular terminal holders 4a and 4b extending forward. Flanges 6a and 6b used for assembling are provided on the outside of each of the terminal holding portions 4a and 4b, and a tab 8 for determining the mounting direction of the housing 2 is provided on a bottom surface 10 (FIG. 2) of the housing 2. I have. Extending from the mating surface 12 toward the rear 16 at the front of the upper wall 14 of the housing 2 is the hollow groove 1 of the housing 2.
8, 18.

FIG. 2 shows the housing 2 shown in FIG.
It is the front view seen from the 2nd side, ie, arrow A. An opening 20 into which a mating tab terminal (see FIG. 5) 152 is inserted is formed in the fitting surface 12 of each of the terminal holding portions 4a and 4b. In the opening 20, housing lances 22a, 22 extending obliquely forward from the upper wall 14 of the housing 2 to lock the terminals are provided.
b is formed integrally. The tab 8 is integrally connected to the bottom surface 10 of the housing 2 via a rib 24.

FIG. 3 is a side view of the housing 2 shown in FIG. The housing 2 has a shape in which a rear portion 16 is slightly enlarged vertically.

FIG. 4 is a rear view of the housing 2 of FIG. 1 viewed from the direction of arrow C. At the rear end 26 of the housing 2, a terminal receiving port 28 communicating with the terminal passage 30 for inserting a terminal 70 (see FIG. 5) is formed. Each terminal passage 30 has inclined surfaces 32 formed on both sides, and serves as a guide when inserting the terminal.

FIG. 5 is a sectional view showing a state where the terminal 70 and the secondary locking member (locking member) 100 are arranged in the housing 2 shown in FIG. Terminal 70
Is indicated by an imaginary line, and its shoulder 72 and housing lance 2
The tip of 2a is engaged to prevent the terminal 70 from coming off. The terminal 70 has a box-shaped connection portion 74 and a crimp portion 76 that is crimped to the electric wire 206. In FIG.
The connection terminal 74 has a tab terminal 152 of the mating connector 150.
Are inserted and electrically connected.
The terminal passage 30 is formed on the inclined surface 3 at the rear portion 16 of the housing 2.
It expands up and down through 2,36. A recess 41 is formed between the bottom surface 40 at the rear of the terminal 70 and the floor 38 at the rear of the terminal passage 30, and the secondary locking member 100 is disposed in the recess 41, that is, in the gap.

A latch arm 102 having a projection 104 is formed on the secondary locking member 100. On the other hand, an engagement hole (see FIG. 6) 4 penetrating through the bottom surface 10 of the housing 2 is provided at a position corresponding to the projection 104 on the floor surface 38 of the housing 2.
2 are formed. When the secondary locking member 100 is inserted into the terminal passage 30 from the rear end 26 of the housing 2, the protrusion 10
4 engages with the engagement hole 42 to be locked in the terminal passage 30. At this time, the stopper 106 of the secondary locking member 100 is positioned to face the rear end 78 of the terminal 70, so that the terminal 70 does not fall backward. Also, the other party's connector is
For example, when the tab 8 is arranged on the wall surface 5 shown by the imaginary line in the drawing, the tab 8 plays a role of keying so that the tab 8 interferes with the wall surface 5 and cannot be assembled unless it is located on the opposite side of the wall surface. Details of the secondary locking member 100 will be described later. The secondary locking member 100 is located below the terminal 70 as shown in FIG.

FIG. 6 shows the housing 2 of FIG.
FIG. 5 is a cross-sectional view taken along a line and showing a state where the secondary locking member 100 is mounted on the terminal passage 30. In the figure, reference numeral 44 denotes a terminal holding unit 4
5A and 5B show connection walls formed integrally with the housing 2 for connecting a and 4b. A terminal holding portion 4a at the rear of the housing 2;
The support wall 46 is formed between 4b. The secondary locking member 100 is inserted between the support wall 46 and the bottom surface 38, and the column 48 of the secondary locking member 100 comes into close contact with the support wall 46.
Thereby, the force generated when the latch arm 102 bends when the secondary locking member 100 is inserted is received, and the latch arm 102 is reliably locked. The engaging portion is the engaging hole 42
Therefore, when the secondary locking member is completely mounted, the protrusion 1
Since 04 appears on the bottom surface 10 side, it can be easily visually recognized that it is completely mounted. To release the secondary locking member 100, the projection 104 can be easily removed by pushing the projection 104 from the bottom surface 10 side.

Referring to FIGS. 7 to 9, the secondary locking member 10
0 will be described in detail. FIG. 7 shows the secondary locking member 10.
0 is a plan view. On both sides of the latch arm 102 and the support post 48, a substantially rectangular insertion portion 110 to be inserted into the terminal passage 30 is formed via a connection portion 115. Insertion part 1
A stopper 106 for preventing the terminal from coming off is provided on the upper surface 112 of the projection 10. A stop surface 108 serving as a front end of the stopper 106 contacts a rear end 78 of the terminal 70 to
To prevent the rearward escape.

FIG. 8 shows the secondary locking member 100 as viewed in the direction of arrow D in FIG.
FIG. Tapers 114 a, 114 b, 114 c, and 114 d are formed at the tip of the latch arm 102.
a, 116b and 116c are formed, and
It serves as a guide (guidance) for insertion into the device. Furthermore, the taper 118a, 118b, 118
c, 118d are formed, and serve as guides for insertion into the terminal passage 30.

FIG. 9 is a side view of the secondary locking member 100 shown in FIG. A gap G is formed between the latch arm 102 and the support column 48 so that the latch arm 102 can sufficiently bend.

Although the preferred embodiment of the present invention has been described in detail, the present invention is not limited to this embodiment, and it goes without saying that various modifications and changes are possible. For example, even when there are three or more terminal passages, it can be easily configured by providing the latch arms between the insertion portions.

Although the above embodiment has been described with respect to the case where the terminal is secondarily locked, the terminal may be used for primary locking. The engaging portion may be a groove, a dent, or the like, instead of a through hole.

[0019]

According to the electrical connector of the present invention, the housing has a recess in the rear floor of the terminal passage, the latching member engages with the housing, the insertion portion inserted into the recess, and the terminal. The following effects are achieved by providing the stopper protruding from the insertion portion, which can be abutted on the rear end.

That is, even if a plurality of electric wires are terminated to one terminal, the locking member can be easily attached from the rear.
Further, in the case where only one wire is terminated to the terminal, the wire can be attached without interference even if the wire has a large diameter.

[Brief description of the drawings]

FIG. 1 is a plan view of a housing used for an electrical connector of the present invention.

FIG. 2 is a front view of the housing shown in FIG.

FIG. 3 is a side view of the housing shown in FIG. 1;

FIG. 4 is a rear view of the housing shown in FIG. 1;

FIG. 5 is a sectional view of the electrical connector of the present invention.

FIG. 6 is a cross-sectional view of the housing of FIG. 1 taken along line VI-VI and showing a state in which a secondary locking member is attached to the terminal passage.

FIG. 7 is a plan view of a secondary locking member.

8 is a front view of the secondary locking member shown in FIG.

FIG. 9 is a side view of the secondary locking member shown in FIG.

FIG. 10 is a sectional view of a conventional electrical connector.

[Explanation of symbols]

 2 Housing 30 Terminal passage 38 Floor 41 Depression 42 Engagement hole 70 Terminal 78 Rear end 100 Locking member 102 Latch arm 106 Stopper 110 Insertion part

Claims (1)

(57) [Claims] 1. A terminal having a crimp portion crimped on an electric wire;
A housing that holds the terminal in the terminal passage, and a secondary locking member that is attached to the housing and locked to the terminal to prevent the terminal from coming off, wherein the secondary locking member is In an electrical connector having a latch arm engaged with the housing and a stopper capable of abutting on a rear end of the terminal, an upper surface of a terminal receiving port communicating with the terminal passage of the housing is provided with the secondary locking member. Forms a space between the terminal and the electric wire extending from the crimping portion of the terminal, the stopper of the secondary locking member extends from the crimping portion on the bottom surface side of the terminal. An electrical connector, wherein the electrical connector contacts a rear end of the terminal extending rearward .