JPH0896879A - Connecting terminal lock structure for connector - Google Patents

Abstract

PURPOSE: To properly lock a connecting terminal to a connector housing. CONSTITUTION: A housing 1 has a plurality of terminal housing holes 2 in parallel, and a locking lance 10 is projected forward from the rear upper walls 2a of the holes 2 for locking the terminal connecting section 5 of a connecting terminal 4. Also, the rear section of the housing 1 is provided with a coupling hole 12 continuous to space inside the rear upper wall 2a at the same level. The hole 12 is used for inserting a locking plate 13 for locking a stabilizer section 8 and the plate 13 is formed out of synthetic resin. In addition, the plate 13 is provided with a plate body section 13a for engagement with the hole 12, and a flexible projection 13b flexing down during a slide motion on the slope 11a of a guide projection 11 for coming to be positioned immediately behind the stabilizer section 8. According to this construction, the lock plate 13, when inserted, presses the lance 10 against the connecting terminal 4, and the end flexible projection 13b of the plate 13 is deformed to retain the stabilizer section 8 of the terminal 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector connecting terminal assembly for a connector in which a connecting lance housed in a terminal housing hole of a housing is temporarily locked by a locking lance and is secondarily locked by a locking plate. It relates to a stop structure.

[0002]

2. Description of the Related Art Generally, in a multi-pole connector used for wiring of an automobile or the like, a housing has a large number of terminal accommodating holes formed in, for example, a multistage double row, and these terminal accommodating holes accommodate the connecting terminals accommodated therein. Locking lances are provided to prevent the rearward slippage by locking the lock lances. When the connection terminal is inserted into the terminal accommodating hole, the locking lance is pushed up by the connection terminal to bend, and is restored after the connection terminal is completely accommodated to lock the connection terminal.

Here, when the connection terminal is small,
As the terminal accommodating hole becomes smaller, the locking lance becomes smaller, and the locking force of the locking lance becomes weaker. In order to make up for this weakness of the locking force, a locking member, which is a separate member, is provided at the rear end of the housing to lock the wire crimping portion at the rear end of the connection terminal.

[0004]

However, in the above-mentioned conventional example, there is a possibility that the locking lance may come off when a twisting force is applied to the connecting terminal from the mating connecting terminal.

Further, when the connection terminal is locked by the locking member, the shape of the wire crimping portion differs depending on the condition when the wire is crimped, so that the shape in which the locking member can be locked is not constant, and There is a problem that the stop state becomes unstable.
Further, since the locking member locks the wire crimping portion, the distance that the locking member moves before locking is small, and it is possible to obtain a feeling as to whether or not the locking member has locked the connection terminal securely. There is a problem that you cannot do it.

Further, if the connection terminal is housed in the housing, there is a problem that it gives an illusion that the locking member is completely locked.

It is an object of the present invention to solve the above-mentioned problems, to securely receive and lock the connection terminal in the housing, and to lock the connection terminal of the connector so that a feeling of locking the connection terminal can be obtained. To provide the structure.

[0008]

In order to achieve the above object, a connector connecting terminal locking structure according to the present invention has terminal receiving holes for receiving the connecting terminals in parallel and the first connecting terminal. A housing made of synthetic resin having a locking lance for temporarily locking the locked portion of the terminal housing hole, and a fitting hole provided so as to communicate with the rear upper wall of the terminal housing hole. Connector connecting terminal locking structure including a locking plate made of synthetic resin for secondly locking the second locked portion provided in front of the connection terminal with the flexible portion at the front end. The locking lance is pressed by the insertion of the locking plate and engages with the first locked portion of the connection terminal, and the flexible portion of the locking plate bends according to the insertion. It is characterized in that the second locked portion of the connection terminal is locked.

[0009]

In the connector connecting terminal locking structure having the above-described structure, when the connecting plate is inserted into the terminal receiving hole and then the locking plate is fitted into the fitting hole and pushed forward, the locking lance is provided. Is pressed to the side of the connection terminal to be temporarily locked, and the flexible portion at the tip of the locking plate is bent to secondarily lock the connection terminal.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. 1 is a vertical cross-sectional view of this embodiment, and FIG. 2 is a plan view thereof. The housing 1 is formed of, for example, a synthetic resin material into a substantially rectangular tube shape, and a plurality of terminal receiving holes 2 are formed in the housing 1. For example, it is formed in multiple rows and columns, and the connection terminals 4 to which the electric wires 3 are connected are accommodated in these terminal accommodation holes 2.
In front of the connection terminal 4, a terminal connecting portion 5 for connecting a connection terminal (not shown) of the mating side is provided, a core wire crimping portion 6 for crimping the core wire portion 3a of the electric wire 3 is provided in the middle, and the electric wire 3 is provided at the rear.
A cover crimping portion 7 for crimping the covering portion 3b is provided. Then, on the upper side edge of the terminal connection portion 5, the connection terminal 4
A stabilizer portion 8 for stabilizing the posture of the is projected upward.

On the other hand, a front locking portion 9 is provided at the front end of the terminal accommodating hole 2 for preventing the connecting terminal 4 from coming out forward, and the connecting terminal 4 is provided on the rear upper wall 2a of the terminal accommodating hole 2.
A locking lance 10 having flexibility is provided to prevent the slip-out of the rear side of the rear side toward the front side. A protrusion 10a located immediately after the terminal connecting portion 5 of the connection terminal 4 is provided on the lower surface of the locking lance 10, and the locking lance 10 is provided with a terminal when the connection terminal 4 is housed in the terminal housing hole 2. The connecting portion 5 bends upward, and the terminal connecting portion 5 is locked by the locking lance 10.
After passing through, the projection 10a is restored and the terminal connecting portion 5
It is located just after.

A guide protrusion 11 is provided on the upper portion of the front side wall 2b of the terminal accommodating hole 2 as shown in the perspective view of FIG. 3, and the rear end of the guide protrusion 11 descends forward. The slope portion 11a is formed. A wide fitting hole 12 communicating with all the rear upper walls 2a of the same stage is provided in the rear portion of the housing 1. Bottom wall 1 of fitting hole 12
2a and the upper surface 10b of the locking lance 10 are formed on the same plane, and a locking plate 13 for locking the connection terminal 4 is inserted into the fitting hole 12.

The locking plate 13 is made of a synthetic resin material as shown in the perspective view of FIG.
The same number of flexible projecting piece portions 13b as the terminal accommodating holes 2 of the same stage are provided so as to project forward. These flexible protrusions 13b are
When the locking plate 13 is fitted into the fitting hole 12 and pushed forward, the slanted surface portion 11a of the guide projection 11 is slid and bent downward, and finally the flexible protruding piece portion 13b is connected to the connecting terminal 4 Is formed at a position where the rear end of the stabilizer portion 8 is locked.

Here, the locking plate 13 is sized so that the rear end of the main body portion 13a substantially coincides with the rear end of the housing 1 when the tip of the flexible protruding portion 13b is positioned immediately after the stabilizer portion 8. , The housing 1 is locked.

In the connector connecting terminal locking structure having such a structure, when the connecting terminal 4 to which the electric wire 3 is connected is pushed into the terminal receiving hole 2 of the housing 1 from the rear side, the connecting terminal 4 is formed.
The terminal connecting portion 5 pushes the protrusion 10a of the locking lance 10 to bend the locking lance 10 upward, and the front end contacts the front locking portion 9 to stop the forward movement. At the same time, the locking lance 10 is restored, and the protrusion 10a of the locking lance 10 is restored.
Immediately thereafter, the connection terminal 4 is temporarily locked.

When the locking plate 13 is fitted into the fitting hole 12 in this state, as shown in the side view of FIG. 5, the plan view of FIG. 6 and the partial perspective view of FIG. Is housing 1
It is protruding from the rear end. From this state, the locking plate 1
When 3 is pushed forward, the flexible projecting piece 13b slides on the slope 11a of the guide projection 11 and bends downward, and finally the tip of the flexible projecting piece 13b is located immediately after the stabilizer 8 and the connecting terminal 4 is inserted. Secondary locking. At this time, the main body portion 13a of the locking plate 13 is located on the upper surface 10b of the locking lance 10, and the locking lance 10 is pressed downward to restrict its movement.

As described above, in this embodiment, the locking lance 10 temporarily locks the terminal connection portion 5 of the connection terminal 4, and the main body 13a of the locking plate 13 is placed on the upper surface 10a of the locking lance 10. Since the locking lance 10 is located at the position, the locking lance 10 is surely pressed against the terminal connecting portion 5, so that the primary locking force can be further improved.

The flexible projection 13b of the locking plate 13 is
Instead of the cover crimping part 7 with incorrect dimensions of the connection terminal 4,
Since the stabilizer portion 8 having an accurate dimension is locked, the secondary locking force can be stabilized, and at the same time, the moving distance of the locking plate 13 is larger than that in the case of locking the coated crimping portion 7. Therefore, the operator can feel that the locking plate 13 has moved to the locking position.

Further, the locking plate 13 has a structure in which the rear end of the locking plate 13 coincides with the rear end of the housing 1 when the stabilizer portion 8 is locked, and the locking lance 10 connects the connection terminal 4 to each other. For example, since the locking plate 13 cannot be pushed in when the locking lance 10 is pushed up without being locked,
It is possible to prevent the locking lance 10 from giving an illusion of being locked even though the locking lance 10 is not working.

Although the locking plate 13 is locked in the housing 1, the temporary engaging position where the connection terminal 4 can be inserted into the terminal accommodating hole 2 and the connection terminal 4 is pushed forward after being completely inserted. Then, the connection terminal 4 may be locked by a known locking means having a main engagement position for secondarily locking the connection terminal 4.

[0021]

As described above, the connection terminal locking structure of the connector according to the present invention acquires the primary locking of the connection terminal by the locking lance by pushing the locking plate and the locking plate. Since the connection terminal is secondarily locked, the locking force with respect to the connection terminal can be improved.

Further, when the connection terminal is completely accommodated, the locking plate is located above the locking lance and presses the locking lance to the connection terminal side, so that the primary locking force of the locking lance is increased. Can be improved.

On the other hand, when the connection terminal is imperfectly housed, the locking plate cannot be fitted due to the upward bending of the locking lance, so that the erroneous insertion of the connection terminal can be prevented.

Further, since the front side of the connection terminal is locked by the locking plate, the operator can move the locking plate largely and insert it, so that a feeling of being locked can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view.

FIG. 2 is a plan view.

FIG. 3 is a partially enlarged perspective view.

FIG. 4 is a perspective view of a locking plate.

FIG. 5 is an explanatory diagram of an operation.

FIG. 6 is a plan view.

FIG. 7 is a partially enlarged perspective view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Terminal accommodation hole 4 Connection terminal 5 Terminal connection part 7 Cover crimping part 8 Stabilizer part 10 Locking lance 11 Guide protrusion 11a Slope part 12 Fitting hole 13 Locking plate 13a Flexible projection part

Claims (2)

[Claims] 1. A terminal accommodation hole for accommodating a connection terminal is provided in parallel, and a locking lance for temporarily locking a first engaged portion of the connection terminal is provided in the terminal accommodation hole. The synthetic resin housing and the fitting hole provided so as to communicate with the rear upper wall of the terminal receiving hole, and the second locked portion provided in front of the connection terminal is flexible at the front end. A connecting terminal locking structure for a connector, which comprises a locking plate made of synthetic resin that is secondarily locked by a locking portion, wherein the locking lance is pressed by the insertion of the locking plate and 1, the flexible portion of the locking plate is bent as it is inserted to lock the second locked portion of the connection terminal. Stop structure. 2. The connector connection terminal locking structure according to claim 1, wherein locking means for locking the locking plate to the housing is provided between the locking plate and the housing.