JPH1174016A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which can, despite its small size, certainly connect with the mating terminal by performing engagement and retention of the housing with terminal certainly. SOLUTION: A plug housing 10 is provided with a lance 16, lock part 18, and a holding hole surface of the fitting part to serve as an insert stopper. The housing lance 16 is formed so that its front face 12a confronts a stopper receiving space 15, and the housing lock part 18 is formed protruding into a terminal holding hole 13. A terminal 30 is furnished with a terminal stopper 34 and rear face 32c of a supporting part 32 for the contacting part to serve as the second slipoff preventive stopper, and the lance 16 makes elastic deformation outward when the terminal 30 is being inserted. When the insertion of the terminal 30 proceeds to the specified position, the terminal stopper 34 is positioned in the space 15, and the supporting part 32 is positioned ahead of the lock part 18 to prevent backward slipping off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector in which a terminal to which an electric wire is crimped is inserted and held in a housing.

[0002]

2. Description of the Related Art As such a connector, a connector 101 as shown in FIG. 8 is conventionally known. This connector 101 is a so-called plug connector,
The plug terminal 130 to which the wire D is crimped is held in the plug housing 110.

[0003] The plug housing 11 is inserted into the receptacle housing 150 of the receptacle connector 105.
0, and the plug connector 101 and the receptacle connector 105 are fitted to each other so that the plug terminal 1
30 and the receptacle terminal 160 are connected.

As shown in FIG. 9, a terminal stopper 134 extending upward is formed above the contact portion 131 of the plug terminal 130. A housing lance 116 is formed on the upper surface of the plug housing 110,
Front of housing lance 116 (left side in FIG. 8)
Has an opening 115 formed therein.

[0005] The plug housing 1 formed as described above.
The plug terminal 130 is inserted into the plug terminal 10 from the rear (right side in FIG. 8) and is held in the plug terminal holding hole 113. When the plug terminal 130 is inserted, the housing lance 116 is pushed upward. When the plug terminal 130 is completely inserted, the terminal stopper 134 is moved to the housing lance 1.
16 abuts against the front end surface 116a.

As a result, the receptacle connector 105
When the plug terminal 130 is pushed by the receptacle terminal 160 at the time of fitting, the plug terminal 130 can be locked to the plug housing 110 against this force. .

[0007]

However, in the above-described plug connector 101, the engagement between the plug housing 110 and the plug terminal 130 is limited to only one position where the terminal stopper 134 and the front end surface 116a are in contact with each other. Therefore, the engagement between the plug housing 110 and the plug terminal 130 is likely to be insufficient, and particularly when the plug connector 101 is miniaturized, the plug connector 101 becomes insufficient, and the contact between the plug terminal 130 and the receptacle terminal 160 is poor. There is a problem that is likely to occur.

Further, since the convex portion 131 that comes into contact with the receptacle terminal 160 is located below the above-mentioned locking position, the plug terminal 13 is fitted when it is fitted with the receptacle connector 105.
A force that lowers 0 obliquely backward also acts. Therefore, at the time of assembly, the plug housing 110 and the plug terminal 1
30, both connectors 101 and 105 are locked.
There is also a problem that the engagement may be insufficient by repeating the fitting and the disengagement.

In the receptacle connector 105, the protrusion 131 has left and right contact portions 132a extending downward from left and right ends of the receptacle connector 105, respectively.
132b. Left and right contact portions 132a, 13
Since the lower end of 2b is open, both connectors 101,
When a force such as prying in the left-right direction acts when the fitting and releasing of the 105 are performed, the left and right contact portions 132a, 132
b is permanently deformed to an open state, and the plug terminal 13
There is also a problem that a contact failure occurs between 0 and the receptacle terminal 160.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and even if the housing is small, the housing and the terminal disposed inside the housing can be reliably held and retained, It is an object of the present invention to provide a connector that can reliably connect a terminal to a counterpart terminal by preventing deformation of the terminal.

[0011]

In order to achieve the above-mentioned object, a connector according to the present invention comprises a housing and terminals, and the housing has a terminal holding hole penetrating in the front-rear direction. At the same time, the terminal is fitted to the mating housing at the front, and the terminal is inserted and held in the terminal holding hole from the rear to the front of the housing with the wire crimped and held.

The housing has a housing lance, a locking projection, and an insertion stopper.
The housing lance is formed so as to be elastically deformable outward with its front end facing the stopper receiving space formed in the front, and the locking projection is formed to protrude into the terminal holding hole at a position facing the housing lance. . The insertion stopper regulates the insertion of the terminal into the terminal holding hole at a predetermined position.

The terminal has a first stopper and a second stopper. The first retaining stopper is formed to protrude in the outer peripheral direction of the terminal,
The housing lance is elastically deformed outward when inserted into the terminal holding hole, and is located in the stopper receiving space when the terminal is inserted to a predetermined position. The second stopper is located in front of the locking projection when the terminal is inserted to the predetermined position.

According to the connector thus configured,
When the terminal is inserted into the terminal holding hole from the rear of the housing, even if the first stopper is protruded from the outer periphery of the terminal, the terminal is inserted into the terminal holding hole because the housing lance is elastically deformed outward. Can be.

Furthermore, when the terminal is inserted, the terminal rides on the locking projection, so that the entire terminal moves upward in the terminal holding hole. This upward movement is also absorbed by the elastic deformation of the housing lance. Therefore, it is possible to get over the locking projection without preventing the terminal from being inserted.

When the terminal is located at a predetermined position where the terminal abuts against the insertion stopper and further insertion of the terminal is restricted, the first stopper stops past the housing lance. And a second stopper is located in front of the locking projection.

Accordingly, when the terminal is to be pulled out to the rear of the housing, the first retaining stopper comes into contact with the front end face of the housing lance, and the second retaining stopper comes into contact with the front surface of the locking projection. , And the terminal can be firmly held in the housing.

In order to achieve the above object, another connector of the present invention comprises a housing and a terminal similarly to the connector described above, wherein the terminal comprises a wire crimping portion, a contact portion support portion, and a contact portion. And a fixed part. The wire crimping portion is configured to be able to hold the wire by crimping, and the contact portion support portion is formed to extend forward from the wire crimping portion, and is positioned on the left and right sides of the mating terminal when the connector housing and the mating housing are fitted. It is supposed to.

The contact portion extends from the front end of each contact portion support portion toward the rear and is formed so as to be elastically deformable outward, and holds the mating terminal when the housing is mated with the mating housing. It is supposed to. Also,
The fixing portion connects the left and right contact portion support portions at the upper and lower portions of the contact portion support portion to prevent the contact portion support portion from spreading in the left-right direction.

In the connector configured as described above, even when a force is applied to squeeze the connector in the left-right direction when the connector is mated with or released from the mating connector, a force is applied to push the terminal to the left or right. In addition, only the contact portion elastically deforms, and the contact portion support portion itself does not spread in the left-right direction.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention, in which a connector is used as a plug connector, will be described below with reference to FIGS. The plug connector 1 has a plug terminal 30 to which a wire D is crimped, similar to the plug connector 101 described above.
It is configured to be held within 0. The plug connector 1 is a two-pole connector configured to hold two plug terminals 30, 30.

First, the plug terminal 30 will be described.
The plug terminal 30 is formed by bending an elastic metal (conductive material) plate material, and is formed into a flat plate-shaped main body portion 31 and a front portion of the main body portion 31 (left side in FIG. 2). ), A contact portion support portion 32 extending downward and formed in a square pipe shape, and an electric wire crimping portion 33 extending downward at a rear portion (right side in FIG. 2) of the main body portion 31. It is configured.

The electric wire crimping portion 33 is a core wire D of the electric wire D.
a wire crimping portion 33a for crimping the outer sheath portion of the electric wire D, and a core wire crimping portion 33b for crimping the outer sheath portion of the electric wire D.
Before they are crimped, as shown in FIG. 5, they are formed in a U-shape with their lower sides both open. Then, using a crimping tool (not shown), as shown in FIGS.
Then, the electric wire D is crimped so as to wrap the outer skin of the electric wire D.

A terminal stopper (first stopper) 34 extending upward from the main body 31 is provided at the front of the main body 31 by bending a part of the main body 31 upward from a notched state. Is formed. From the front ends of the left side surface 32a and the right side surface 32b of the contact portion support portion 32, left and right contact portions 35a and 35b are formed to extend rearward (U-shaped), respectively.

The lower plate 36 of the contact portion support portion 32 includes a rear member 36a and a front member 36b, and the rear member 36a is formed to extend from the left side surface 32a.
6b is formed to extend from the right side surface 32b. A fitting protrusion 36c projecting rearward is formed on the front member 36b, and a receiving groove 36d that can receive the fitting protrusion 36c is formed on the rear member 36a.

Then, as shown in FIG. 5B, when the contact portion support portion 32 is bent into a square pipe shape,
The receiving protrusion 36c is received in the receiving groove 36d, and both members 36
a and 36b can be firmly engaged. Accordingly, in the plug terminal 30, the vicinity of the front end of the main body 31 and the lower plate 36 constitute a fixing portion described in the claims.

The plug terminal 30 thus configured is
It is inserted into the plug housing 10. The plug housing 10 is formed of an insulating resin material, and includes a base 11 and a fitting portion 12 formed to protrude forward of the base 11. A terminal holding hole 13 is formed in the rear end surface 11a of the base 11 so as to open, and the terminal holding hole 1 penetrates through the front end surface 12a of the fitting portion 12.
3 is formed with a receptacle terminal insertion hole 12c.

In this embodiment, since the plug housing 10 is a two-pole plug housing, two terminal holding holes 13 are formed, and two plug terminals 30, 30 are inserted from the rear of the plug housing 10. It can be held. In addition, fitting protrusions 14 are formed on the left and right side surfaces of the fitting portion 12, respectively.

An opening 15 is formed on the upper surface of the fitting portion 12 so as to be connected to the terminal holding hole 13. A housing lance 16 extending forward from the upper end of the base 11 is formed so as to cover the opening 15. ing. Therefore, the front portion of the housing lance 16 in the opening 15 forms a stopper receiving space described in the claims.

Since the plug housing 10 is formed of a resin material, the housing lance 16 is elastically deformed on the side of the base 11, so that the front end can freely swing up and down. Also, the bottom surface 17 of the terminal holding hole 13
From above, a housing lock portion (locking projection) 18 is formed to protrude into the terminal holding hole 13.

The inner height H1 of the terminal holding hole 13 is slightly smaller than the height H2 of the contact portion support portion 32 of the plug terminal 30 (with a size smaller than the height H4 of the terminal stopper 34).
It is formed large. Further, the housing lance 16
On the side of the terminal holding hole 13, the stopper escape groove 16 b has a dimension H 3 slightly smaller than the height H 4 of the terminal stopper 34.
Formed at a depth of

The plug housing 1 thus formed
According to the plug terminal 30 and the plug terminal 30, the plug terminal 30 to which the electric wire D is crimped is inserted into the terminal holding hole 13 from behind the plug housing 10 and held.

At this time, since the height (H1 + H3) of the opening of the terminal holding hole 13 of the plug housing 10 is larger than the total height (H2 + H4) of the plug terminal 30, it is easy to insert the plug terminal 30 into the plug housing 10. Can be done. In particular, up to the position where the terminal stopper 34 rises, only the contact portion support portion 32 is inserted into the terminal holding hole 13, so that the initial positioning can be smoothly performed.

After that, when the plug terminal 30 is pushed in, as shown in FIG.
The lower plate 36 of the plug terminal 30 abuts on (gets on)
Therefore, the housing lance 16 is
Is pushed upward.

Since the housing lance 16 is configured to be elastically deformable as described above,
If 0 is pushed, the housing lance 16 is pushed up further by the terminal stopper 34 as shown in FIG. Then, the front end surface 32d of the contact portion support portion 32
Is further pushed until the terminal stopper 34 comes into contact with the holding hole surface 12b of the fitting portion 12, as shown in FIG.
The contact portion support portion 32 is located in front of the housing lock 18.

In this state, the housing lance 1
6 returns to its original state due to its elasticity. Therefore, even if a force for pulling out the plug terminal 30 from the plug housing 10 is applied, the terminal stopper 34 contacts the front end surface 16a of the housing lance 16 and the contact portion support portion 32 The rear end surface 32c abuts (locks) on the front end surface 18a of the housing lock 18.

As a result, the plug terminal 30 cannot be pushed further forward into the plug housing 10 and cannot be pulled backward (in the direction opposite to the insertion direction). For this reason,
The contact portion 35 of the plug terminal 30 is firmly held in a state facing the receptacle terminal insertion hole 12c. Therefore, the rear end surface 32c of the contact portion support portion 32 constitutes a second stopper for stop described in the claims, and the holding hole surface 12b of the fitting portion 12 constitutes the insertion stopper described in the claims. It will be.

A housing lance receiving portion 31a projecting upward is formed behind the terminal stopper 34 in the main body portion 31 of the plug terminal 30, and the plug terminal 30 is completely inserted into the plug housing 10 as described above. In the inserted state, the front lower end surface 16b of the housing lance 16 comes into contact with the housing lance receiving portion 31a. As a result, the plug terminal 30 is pushed down in the terminal holding hole 13, so that the engagement between the contact portion support portion 32 and the housing lock 18 can be performed more reliably.

In the upper front part of the plug housing 10, a lift prevention stopper 19 covering a part of the opening 15 is provided.
Are formed. This lifting prevention stopper 19
Has a bottom surface 19 a formed on the same plane as the upper surface of the terminal holding hole 13. Thus, in a state where the plug terminal 30 is completely inserted into the plug housing 10 (a state shown in FIG. 1C), even when a force for pushing the plug terminal 30 upward is applied, the main body 31 is in contact with the bottom surface 19a. Due to the contact, the housing lance 16 is not pushed up.

As shown in FIGS. 6 and 7, the receptacle connector 5 is fitted to the plug connector 1 in which the plug terminals 30 are held in the plug housing 10. The receptacle connector 5 includes a receptacle housing 50 and a receptacle terminal 60 held by the receptacle housing 50.

The receptacle housing 50 is formed of a resin material having an insulating property similarly to the plug housing 10, and includes a base 51 and a wall 52 extending forward from the outer periphery of the base 51. A space surrounded by the wall 51 and the wall 52 forms a plug receiving space 53 that opens on the opposite side of the base 51. The right and left side surfaces of the wall portion 52 are provided with fitting grooves 54, 54 with which the fitting protrusions 14, 14 are engaged when fitted with the plug housing 10.
Are formed.

The receptacle terminal 60 is formed of a conductive material in the shape of a quadrangular prism, is inserted and held in a terminal holding hole 51 a formed through the base 51 in the front-rear direction, and the tip 61 is inserted into the plug receiving space 53. It is protruding. The base end 62 of the receptacle terminal 60 is connected to a wiring pattern (not shown) formed on the printed board K and is fixed to the printed board K.

The receptacle connector 5 thus configured is connected to the plug connector 1 so that the receptacle terminal 60 and the plug terminal 30 are connected. This fitting is performed by inserting the fitting portion 12 of the plug housing 10 from the front opening of the plug receiving space 53.

This insertion is performed until the fitting projections 14 are completely positioned in the fitting grooves 54, 54. The width of the fitting portion 12 in the left-right direction is the same as that of the plug receiving space 53 in the left-right direction. It is formed substantially equal to the width dimension. For this reason, in order to completely position the fitting protrusions 14, 14 in the fitting grooves 54, 54, the housings 10, 50 are strongly pushed so as to be elastically deformed.

When the plug housing 10 and the receptacle housing 50 are fitted in this manner, the receptacle terminals 60 are connected to the left and right contact portions 35a, 35 of the plug terminals 30.
b. At this time, both contact portions 35a, 35
Since b is elastically deformed, both terminals 30 and 60 can be firmly connected by sandwiching the receptacle terminal 60 from both left and right sides.

In order to release the connection between the connectors 1 and 5, the plug connector 1 is pulled out by sandwiching both ends 11b and 11b of the base 11 with fingers. Since 14 and 14 are located in the fitting grooves 54 and 54, it is easier to pull out by pulling while prying left and right. When the plug connector 1 is pulled out by prying left and right, the contact portion 3 is formed by the receptacle terminal 60.
The force which pushes 5 open in the left-right direction acts.

Even if the force for pushing and opening the contact portion 35 is applied, the contact portions 35a and 35b are elastically deformed, so that the distance between the contact portions 35a and 35b does not increase. Further, the left side surface 32a and the right side surface 32b of the contact portion support portion 32 from which both contact portions 35a and 35b extend.
Are firmly engaged with the fitting protrusion 36c and the receiving groove 36d on the lower plate 36. For this reason, even if the force which pushes open both contact parts 35a and 35b acts, left side 32a and right side 32b will not open in the left-right direction. As a result, both terminals 3
0, 60 can be firmly connected.

In the above-described embodiment, the case where both connectors 1 and 5 are two-pole connectors has been described. However, the present invention is not limited to this. Of course, it can also be used as a connector. Also, the receptacle connector 5 is not limited to a so-called straight type connector in which the receptacle terminal 60 is formed to extend linearly as described above, but the base end of the receptacle terminal extends in an L-shape and extends downward. Of course, a so-called right angle type connector may be used.

[0049]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. This plug connector 1 has a terminal holding hole 1 in a plug housing 10.
The opening H3 has an inner height H1 of 1.9 mm, the stopper escape groove 16b has a depth H3 of 0.35 mm, and the housing lock portion 18 has a protrusion of 0.15 mm. Further, in the plug terminal 30, the height H2 of the contact portion support portion 32 is formed to be 1.7 mm, the height H4 of the terminal stopper 34 is formed to be 0.4 mm, and the housing lance receiving portion 31a protrudes by 0.1 mm. It is formed.

Therefore, as shown in FIG. 1C, when the plug terminal 30 is completely inserted into the plug housing 10, a force acts to lift the plug terminal 30 in the terminal holding hole 13. However, at least 0.05 m is required between the housing lock portion 18 and the contact portion support portion 32.
m, the plug terminal 30 as well as the terminal stopper 34 at the upper end of the plug terminal 30 remain.
Can be locked in the direction in which the plug terminal 30 is pulled out.

Particularly, in the plug terminal 30, since the contact portion 35 is formed below the terminal stopper 34,
At the time of fitting with the receptacle connector 5 (when the receptacle terminal 60 is inserted), a force acts to pry the plug terminal 30 downward. However, in the plug connector 1, the lower end of the plug terminal 30 can receive the force by abutting on the housing lock portion 18. Therefore, the engagement of the plug terminal 30 with the plug housing 10 when the two connectors 1 and 5 are fitted can be performed more reliably.

In the plug terminal 30, the interval W1 between the left and right contact portions 35a and 35b is formed to be 0.3 mm, and the width of the receptacle terminal 60 inserted between the contact portions 35 is set to 0.5 mm. Is formed. Further, the gap W3 between the both side surfaces 32a, 32b and the front end portions of both contact portions 35a, 35b is formed to be 0.15 mm. For this reason, when the receptacle terminal 60 is inserted between the contact portions 35a, 35b, the left and right contact portions 35a, 3
5b is bent outward by 0.1 mm each, so that the receptacle terminal 60 can be firmly held.

Further, from this state, the right and left contact portions 35a,
Even if a force is applied to further expand 35b, the left and right contact portions 35a and 35b have room to expand by 0.05 mm, so that the contact portion 35 may be permanently deformed to cause poor contact with the receptacle terminal 60. Absent. Even if such a large force acts, the fitting projection 3
Since the fitting margin W4 between the 6c and the receiving groove 36d is 0.4 mm, the fitting margin W4 is firmly engaged, and the left and right side surfaces 32a and 32b do not open in the left and right direction.

[0054]

As described above, the connector of the present invention is provided with the first stopper and the second stopper at opposing positions such as the upper and lower sides of the terminal. The first retaining stopper is located in the stopper receiving space, and the second retaining stopper is located in front of the locking projection, so that the terminal is prevented from falling backward from the housing at two opposite locations of the terminal. Therefore, even when a force is applied to push the terminal backward by the mating terminal when the mating connector is fitted, the terminal can be held in the housing more reliably. Can be reliably connected.

Further, the other connector of the present invention is configured such that the contact portions of the terminals are formed so as to extend rearward from the contact portion support portions located on the left and right sides of the counterpart terminal, and sandwich the counterpart terminal. In addition, by connecting the left and right contact portion support portions up and down by the fixed portion, the contact portion support portions are prevented from spreading in the left-right direction. Therefore, even when a force is applied to push the terminal in the left and right direction by the mating terminal when the mating connector is fitted and released, the contact portion supporting portion itself is not deformed so as to open in the left and right direction. The terminal of the connector and the counterpart terminal can be reliably connected.

[Brief description of the drawings]

FIGS. 1A and 1B are cross-sectional views showing a state of inserting a terminal into a housing in a connector according to the present invention, wherein FIG. 1A shows a state of initial insertion, FIG.
(C) shows a completely inserted state.

FIG. 2A is a plan view of the connector, and FIG.
(B) shows the BB cross section and the side surface in the above.

FIG. 3 shows terminals used in the connector shown in FIG.
(A) shows the view from the arrow III, and (B) shows the view from the arrow B in (A).

FIG. 4 is a cross-sectional view of the terminal taken along line IV-IV in FIG.

FIG. 5 is a perspective view of the terminal, wherein FIG. 5A shows an expanded state of the lower plate 36, and FIG.

6 is a plan view showing a fitted state of the connector according to the present invention and a mating connector, and is a sectional view taken along the line VI-VI in FIG. 7;

7 is a sectional view of the connector taken along line VII-VII in FIG. 6;

FIG. 8 is a sectional view of a conventional connector.

9A is a plan view of a terminal used in a conventional connector, FIG. 9B is a view in arrow B of FIG. 9A, and FIG. 9C is a view of arrow C in FIG. ing.

[Explanation of symbols]

 1 Plug Connector 5 Receptacle Connector 10 Plug Housing 30 Plug Terminal 50 Receptacle Housing 60 Receptacle Terminal D Electric Wire

Claims (2)

[Claims] A terminal holding hole is formed penetrating in the front-rear direction, and a housing which can be freely fitted to a counterpart housing at the front, and a wire holding by crimping and holding the terminal from the rear to the front of the housing. A connector comprising a terminal inserted and held in a hole, a housing lance having a front end facing a stopper receiving space formed forward and elastically deformable outward and facing the housing lance. A locking projection that protrudes into the terminal holding hole at a position where the terminal is inserted; and an insertion stopper that restricts insertion of the terminal into the terminal holding hole at a predetermined position. When the terminal is inserted to the predetermined position, the housing lance is elastically deformed outward when the terminal is inserted into the terminal holding hole. A first stopper for preventing the terminal from coming off from the housing with respect to the housing; and a terminal for positioning the terminal with respect to the housing by positioning the terminal in front of the locking projection when the terminal is inserted to the predetermined position. A connector characterized by forming a second stopper for preventing backward removal. 2. A housing which penetrates in the front-rear direction and has a terminal holding hole formed therein. The housing can be fitted to a mating housing at the front, and the terminal holding is formed by crimping and holding an electric wire from the rear to the front of the housing. A connector comprising a terminal inserted and held in a hole, wherein the terminal is formed so as to extend forward from the wire crimping portion capable of crimping and holding the wire, and the terminal is formed with the housing and the counterpart. Contact portion support portions located on the left and right of the counterpart terminal when fitted with the housing, and formed so as to extend outward from each front end of each of the contact portion support portions so as to be elastically deformed outward, A contact portion for sandwiching a mating terminal when the housing and the mating housing are fitted to each other; and Connector characterized by comprising a stationary part to prevent rising.