JPH089907Y2 - connector - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention fits a pair of connectors to a plug contact and a receptacle contact, which are respectively held by a pair of connectors and joined to an electric wire or the like. The present invention relates to a connector by which electrical connection is made.

(Prior Art) Conventionally, various connectors for connecting electric wires and the like have been proposed.
There is a connector disclosed in the publication. As shown in FIG. 4, this connector includes a plug connector 4 which houses and holds a plurality of receptacle contacts 3 in which the ends of the electric wires 2 are joined in a plug housing 1, and an end of the electric wires 2 in a cap housing 5. The cap connector 7 accommodates and holds a plurality of plug contacts 6 joined together. To connect both connectors 4 and 7,
Connect the tip 1a of the plug housing 1 to the cap housing 5
Of the plug contact 6 protruding into the fitting hole 5a is inserted into the fitting hole 5a of the receptacle contact 3
It is fitted inside to make electrical connection between both contacts 3 and 6.

In this case, the fitting hole 5a is held by the cap housing 5.
When the tip portion 6a of the plug contact 6 that protrudes inward is bent in the vertical direction or the horizontal direction and is displaced and held in the cap housing 4, the tip portion 1a of the plug housing 1 is inserted into the fitting hole 5a. However, the tip portion 6a of the plug contact 6 is not fitted into the receptacle contact 3 well, and there is a problem that the electrical connection between the contacts 3 and 6 may be defective.

Therefore, the fitting hole 5a of the cap housing 5 is conventionally used.
After mounting the plug contact 6 therein, the position of the tip portion 6a of the plug contact 6 protruding into the fitting hole 5a is checked with a check gauge to prevent the above-mentioned connection failure. However, there is a problem that it is necessary to check all cap connectors with a check gauge, and the number of steps required for checking increases.

As a connector that solves this problem, for example, the applicant of the present invention filed an application on May 30, 1986, and then on December 12, 1987.
A double lock system disclosed in Japanese Utility Model Publication No. 3-47261, which is published on the day, is known. This double lock type connector is constructed as shown in FIG.
FIG. 3 is a sectional view showing a state in which the cap connector 10 is fitted and connected to the plug connector 30. Cap connector
Reference numeral 10 includes a cap housing 11, a positioning member (lock member) 20, and a plurality of plug contacts 25. The cap housing 11 is made of an insulating material such as plastic, a fitting hole 12 is formed on the right side in the drawing, and a tip portion 27 of a plug contact 25 inserted into a plurality of insertion holes 13 formed on the left side. Project into the fitting hole 12. An elastically deformable elastic locking piece 14 is provided so as to project in the insertion hole 13, and a plug contact is provided in the insertion hole 13.
When 25 is inserted, this elastic locking piece 14 abuts the locking plate 28 of the plug contact 25 to lock the extraction. In addition, a positioning member 20 having a tapered positioning hole 22 is inserted into the fitting hole 12, and the positioning member 20 is inserted.
The retaining projection (projection) 21 formed on the
Is inserted in the space 15 formed on the back side of the. Then, the position of the plug contact 25 penetrating the positioning hole 22 is regulated by the positioning hole 22, and the holding projection 21 presses the elastic locking piece 14 to release the contact locking between the locking plate 28 and the plug contact 25. It is regulated not to. When the plug contact 25 penetrates the positioning hole 22, it is guided by the taper of the positioning hole 22.

On the other hand, the plug connector 30 fitted and connected to the cap connector 10 is composed of a plug housing 31, a holding member 40 and a plurality of receptacle contacts 45. A plurality of insertion holes 32 formed through the plug housing 31
A receptacle contact 45 is inserted and held therein. An elastic locking piece 33 is provided in the insertion hole 32 so as to project in the same manner as in the cap connector 10.
When the receptacle contact 45 is inserted therein, the end of the receptacle portion 47 of the receptacle contact 45 is abutted and locked by the elastic locking piece 33,
Forty-five lockouts have been made. Also plug housing 31
A holding member (lock member) 40 is inserted from the left end side to the holding protrusion 40 formed on the holding member 40 and presses the elastic locking piece 33 in the same manner as in the case of the cap connector 10. The abutting engagement between the engagement piece 33 and the receptacle portion 47 is held so as not to come off. Further, the holding member 40 is formed with an insertion opening 41 at a position facing the receptacle portion 47, and when the plug connector 30 is fitted with the cap connector 10, the tip end portion 27 of the plug contact 25 has this opening.
It penetrates through 41 and is engaged and connected with the receptacle portion 47 of the receptacle contact 45. Reference numeral 9 is an electric wire connected to the contacts 25, 45, and reference numerals 29, 49, 50
Is a rubber plug for waterproofing.

According to the conventional double lock type connector configured as described above, the tip end portion 27 of the plug contact 25 mounted on the cap connector 10 is positioned by the positioning hole 22 of the positioning member 20, and the tip is displaced or bent. Can be suppressed. Further, the elastic locking pieces 14, 33 formed on the cap connector 10 and the plug connector 30, respectively.
However, the holding projections 21 and 42 formed on the positioning member 20 and the holding member 40 respectively prevent deformation, and the plug contact 25 and the receptacle contact 45 can be reliably prevented from coming off.

(Problems to be solved by the invention) In the conventional double lock type connector,
For example, when the plug contact 25 is not completely inserted into the insertion hole 13 as shown by the dotted line in FIG.
14 is pushed up by the plug contact 25, the holding protrusion 21 of the positioning member 20 cannot be inserted, and half mounting can be detected.
However, when the positioning member 20 is strongly pressed, the holding protrusion 21
Has a flat tip and the positioning member 20 and the housing 11 are made of resin, the wall portion of the insertion hole 13 is pushed by the holding projection 21 to be deformed or the wall is pushed, as shown by a dotted line in FIG. Part and holding protrusion 21 are scraped off,
Furthermore, even though the holding projection 21 is bent and the plug contact is half-fitted, the holding projection 21 has an elastic locking piece.
There was a problem that it would fit into the back of 14. In order to prevent this fitting, the elastic locking piece 14 in a state where the elastic locking piece 14 is pushed up by the plug contact 25 is used.
It is necessary to maximize the interference margin D with which the holding protrusion 21 contacts with the holding protrusion 21. For this purpose, the difference BA between the width of the opening (B shown in FIG. 5) and the width of the holding projection 21 (A shown in FIG. 5) on the back surface of the elastic locking piece 14 when no force is applied.
Is smaller, and the edge of the retaining projection 21 on the elastic locking piece 14 side may be made a right angle. In this case, the plug contact
There is a problem that it becomes difficult to insert the holding projection 21 of the positioning member 20 into the back surface of the elastic locking piece 14 when the 25 is completely mounted. These problems also apply to the plug connector 30.

Further, as shown in FIG. 4, conventionally, the plug connector 4 and the cap connector 7 had to be fitted to each other in order to detect that the contact was completely inserted. For example, this imperfect insertion is not detected unless it is fitted in an assembly line of an automobile or the like, and when imperfect insertion is detected, the workability is remarkably hindered by the correction.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector that can easily and reliably detect the mounting state of contacts in a connector housing with a half connector body. To do.

(Means for Solving the Problem) The connector of the present invention has an elastic locking piece for holding the contact, which is provided adjacent to the back with a space opening to the front, and the contact is engaged by the elastic locking piece. A connector having a housing to be stopped and a lock member that is inserted into the space and that blocks displacement of the elastic locking piece and that is mounted to the housing from the front, the lock member comprising: Forming a tapered positioning hole for guiding and inserting the contact, and forming a protrusion at the tip of the protrusion, and engaging the protrusion with the elastic locking piece on the end face facing the lock member. It is characterized in that a possible concave portion is formed, and the connector half is used for positioning the contact and detecting incomplete mounting by combining the lock member and the housing.

(Operation) According to the above configuration, when the contact is not inserted to the predetermined position in the insertion hole and is so-called semi-attached, the elastic locking piece is pushed up by the contact and the protruding portion of the lock member is inserted into the inner wall of the insertion hole. Even if an attempt is made to insert it between the elastic locking piece and the back surface of the elastic locking piece, the tip of the protruding portion of the lock member comes into contact with the end surface of the elastic locking piece and is locked. At this time, since the protrusion formed at the tip of the protrusion fits into the recess formed in the end surface of the elastic locking piece, even if the lock member is strongly pressed, it cannot be fitted further than this position. Therefore, the half-mounting of the contact can be reliably detected. When the contact is completely inserted into the insertion hole, the tip of the protruding portion of the lock member is tapered,
It can be easily inserted between the inner wall of the insertion hole and the back surface of the elastic locking piece.

Embodiment An embodiment of the connector according to the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are sectional views showing an essential part of an embodiment of the present invention, and the same or equivalent parts as those of the conventional example shown in FIG. 3 are designated by the same reference numerals. The feature of this embodiment is that the holding projections (projections) 21 formed on the lock members 20, 40,
The shape of the tip of 42 and the shape of the end faces of the elastic locking pieces 14 and 33 facing the locking members 20 and 40, respectively, and other portions are the same as those of the conventional example shown in FIG. The description is omitted. FIG. 1 shows a state before the positioning member 20, which is a lock member, is attached to the back surface of the elastic locking piece 14 on the side of the cap connector (connector half body) 10.
At the tip of the holding protrusion 21 provided at the upper end, a protruding portion 21a whose upper and lower surfaces are tapered is formed. Also this holding protrusion 2
A groove portion (recess) 14b having a V-shaped cross section and having a shape matching the protruding portion 21a is formed on the end surface of the elastic locking piece 14 which faces 1. FIG. 2 shows a state before the holding member 40, which is a lock member, is attached to the back surface of the elastic locking piece 33 on the plug connector (connector half body) 30 side, like the cap connector 10 side. At the tip of the holding protrusion 42 provided at the upper end, a protruding portion 42a having upper and lower surfaces tapered is formed. Further, a groove portion 33b having a V-shaped cross section and having a shape matching the protrusion portion 42a is formed on the end surface of the elastic locking piece 33 facing the holding protrusion 42.

Next, the operation and effect of this embodiment will be described on the side of the cap connector 10 shown in FIG. Plug contact (contact) 25 is inserted in the insertion hole 13 formed in the housing 11.
When the locking projection 14a of the elastic locking piece 14 rides on the locking plate 28 when it is not inserted, the
As shown by the dotted line, it is in a semi-worn state. At this time, when the positioning member 20 is inserted through the fitting hole 12a and the holding projection 21 is inserted between the inner wall of the insertion hole 13 and the back surface of the elastic locking piece 14, the elastic locking piece 14 is pushed up. Therefore, the projection 21a formed at the tip of the holding projection 21 is fitted along the slope of the groove 14b formed on the end surface of the elastic locking piece 14, and the projection 2
The 1a and the groove 14b are engaged with each other and locked at this position. That is, when the tip of the holding projection 21 and the end surface of the elastic locking piece are flat as in the conventional case, the component force of pushing up the wall portion of the insertion hole 13 in the direction of arrow C (FIG. 6) does not act, The holding protrusion 21 is not fitted. As a result, the half mounting of the plug contact 25 can be reliably detected. Further, when the plug contact 25 is completely attached, the tip of the holding projection 21 is tapered, so that it can be easily inserted into the back surface of the elastic locking piece 14.

Similar effects and advantages are obtained on the plug connector 30 side shown in FIG.

(Effects of the Invention) According to the present invention, a lock member having a tapered positioning hole for guiding a contact and a housing in which an elastic locking piece is formed with a recess that can be engaged with a protrusion of the lock member are combined. Since the contact positioning and the incomplete insertion detection are performed by the connector half, the following results are obtained.

Insertion of contacts is always detected when the connector half is completed, and the contacts are shipped with the contacts securely inserted. Therefore, problems such as contact failure between contacts due to incomplete insertion of contacts or fitting failure between connector halves, which have conventionally occurred when fitting connector halves on a production line, do not occur. No work is required to correct it, and reliable electrical connection is possible.

In addition, the positioning holes allow the contacts to be properly corrected in the connector half along with incomplete insertion detection.
Since it is held, the connection with the other party's contact is made extremely smooth and reliable.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a main part on a cap connector side of an embodiment of a connector according to the present invention, FIG. 2 is a vertical cross-sectional view showing a main part on the plug connector side, and FIG. FIG. 4 is a vertical sectional view showing a lock-type connector, FIG. 4 is a vertical sectional view showing a conventional connector, FIG. 5 is a vertical sectional view showing a main part of a conventional connector on a cap connector side, and FIG. 6 is a conventional connector. FIG. 10 …… Cap connector 11 …… Cap housing, 13, 32 …… Insert hole 14, 33 …… Elastic locking piece, 14b, 33b …… Recess 15 …… Space 20 …… Positioning member (lock member) 21,42 …… Holding protrusion (projection) 21a, 42a …… Projection 22 …… Positioning hole 25 …… Plug contact 30 …… Plug connector 31 …… Plug housing 40 …… Holding member (lock member) 45 …… Receptacle contact

Claims (1)

[Scope of utility model registration request] 1. A housing, to which a contact is locked, comprising an elastic locking piece for holding the contact and a space provided adjacent to the elastic locking piece and having an open end.
A connector having a lock member that is inserted into the space and that blocks displacement of the elastic locking piece and that is mounted to the housing from the side of the open one end of the space, wherein the lock member is Has a tapered positioning hole for guiding and inserting the contact, and a protrusion is provided at the tip of the protrusion, and the elastic locking piece is engaged with the protrusion on the end face facing the lock member. A connector characterized in that a possible recess is formed, and positioning of the contact and detection of incomplete insertion can be performed by the connector half by merely fitting the lock member and the housing.