JPH0666145B2 - Electrical connector receptacle - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector receptacle, and more particularly to an electrical connector receptacle suitable for a modular connector used in telephones, measuring instruments and the like.

2. Description of the Related Art In recent years, small and inexpensive connectors called modular connectors have been used for telephones, measuring instruments, data processing devices, small computers and the like. An example of this type of modular connector is disclosed in JP-A-55-37800. This modular connector is shown in Figure 1 of the accompanying drawings.
As shown in the perspective view of FIG. 5 and the sectional view of FIG. 16, it comprises a modular connector receptacle 10 and a modular connector plug 20. The insulating housing 11 of the modular connector receptacle 10 is made of a plastic material and is attached to the printed circuit board 30 by the attachment legs 13. The insulating housing 11 includes a plug insertion end 11A, a rear end 11B, and a plug insertion hole 12 extending inward from the plug insertion end 11A. The plug insertion hole 12 is surrounded by an inner lower wall 12A, an inner upper wall 12B and a pair of inner side walls 12C. Furthermore, this insulating housing 11 is
It has an outer lower wall 13A, an outer upper wall 13B and a pair of outer walls 13C. Mounting legs 13 are integrally formed on the outer lower wall 13A. This mounting leg 13 is attached to the printed circuit board 3
The connector receptacle 10 is mechanically attached to the printed circuit board 30 by inserting the connector receptacle 10 into the hole provided at 0. A plurality of recesses 14 are provided side by side between the inner upper wall 12B and the outer upper wall 13B of the plug insertion end 11A of the insulating housing 11, and these recesses 14 are provided.
Is connected to each groove 15 in the outer upper wall 13B. A partition wall 15A partitions between the respective grooves 15 in the outer upper wall 13B, and the groove 15 and the partition wall 15A extend downward beyond the rear end 11B of the housing 11 to the outer lower wall 13A. A retainer surface 16 is provided in the plug insertion hole 12. In the insulating housing 11, a plurality of contacts 17 are arranged in parallel at intervals. Each contact 17
It comprises an elongated intermediate portion 17A, which extends across the outer upper wall 13B and is bent downward at 17B. Further, the intermediate portion 17A has a tail portion 17 extending downward across the rear end 11B of the insulating housing 11.
Has C. Spring contact part 17 of each contact 17
D is obliquely projected into the plug insertion hole 12 from the curved portion 17B provided in the recess 14. The rear end of the tail portion 17C of each contact 17 projects from the outer lower wall 13A and is soldered to the conductor of the printed circuit board 30. A central recess 18 that is inclined downward is provided in the inner lower wall 12A and extends to the plug insertion end 11A. A pair of shoulders are provided on both sides of the central recess 18, and these shoulders are provided on the retainer surface 1.
I am giving 6. These shoulders face the rear end 11B of the housing 11 and are adapted to engage with the shoulders of the latch arm 21 of the plug connector 20. 16th
As shown in the figure, the plug insertion hole 12 of the connector receptacle 10 mounted on the printed circuit board 30.
When the plug 20 is inserted into the retainer surface 16 so that the shoulder portion of the latch arm 21 engages with the retainer surface 16, the spring contact portion 17D of each contact 17 has a corresponding contact portion 2 of the plug 20.
The plug 20 is coupled and held to the connector receptacle 10 in a state in which the plug 20 is in electrical contact with the connector receptacle 10.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the electrical connector receptacle of the type described above, since the latch member 21 is located below the plug connector 20, the latch member is accidentally pressed and the plug 20 is receptacle. It is effective in that it does not come off from the plug 10 and that the plug 20 cannot be accidentally removed from the receptacle 10 by a child because the child cannot easily operate it. However, it has the following problems.

That is, in the structure of this conventional connector receptacle 10, the contactor 17 arranged in the insulating housing 11 is
It is like surrounding the upper wall of the housing from the rear end 11B of the insulating housing 11 to the upper wall 13B and below the inner upper wall 12B. Therefore, after each contact 17 is bent in advance to its predetermined shape. It is difficult to insert and arrange the insulating housing 11. Therefore, in this conventional connector receptacle, the contact member is arranged in a predetermined position of the insulating housing and then bent into a predetermined shape, and the bending process is performed through the insulating housing made of a soft plastic material. Is a dangerous task, and such a task is very cumbersome and time consuming.
It had raised the price of the entire connector. Moreover,
In this conventional connector receptacle, since the intermediate portion 17A of each contactor 17 is completely exposed at the upper part in the groove 15, an accident such as a short circuit between each contactor due to dust accumulation or the like may occur. There is also a problem that it is easy to cause.

As described above, the problem that the contact member has to be arranged in a predetermined position of the insulating housing and then bent into a predetermined shape, and the problem that the middle part of each contact is completely exposed to the upper part There is a modular jack as disclosed in U.S. Pat. The housing of this modular jack consists of two parts, a cover part and a base part, and the front part of the middle part of the contacts arranged in the base part is covered by the cover part and is not exposed to the upper part. Is being done. However, in this modular jack, when the modular jack is mounted on a printed circuit board, when the lower end of the mounting and fixing portion of each contact is inserted into the conductive opening of the printed circuit board, the mounting and fixing portion is a base. In order to prevent it from shifting upward with respect to the part and lifting up, the window part that allows the pressing jig to be applied to the upper part of the mounting and fixing part is provided at the rear part of the upper wall of the cover part. The rear part of the middle part of the contact is exposed to the upper part. Therefore, even in this modular jack, a part of the intermediate portion of each contact is exposed upward, and there is a problem that an accident such as a short circuit between each contact is likely to occur due to accumulation of dust or the like. It is what
Moreover, in this modular jack, the contactor is disposed in the base portion, and the contactor is disposed in the insulating housing by connecting the base portion and the cover portion. The installation work of the contactor in the insulating housing is made a little easier, but the installation work of the contactor in the base part is performed after the contactor material is installed in the base part. Since the spring contact part must be formed by bending the tip part of the child material, bending work is performed through the base part made of a soft plastic material as in the conventional example, which is a very dangerous work. Yes, there is a risk of damaging the base part, which is very cumbersome and time consuming, increasing the price of the entire connector.

Furthermore, in this modular jack, the base portion provided with the contacts is engaged with the cover portion by sliding it from the rear, and the cover portion is attached to the base portion at the position where the plug is aligned with the sleeve. The cover part must be joined to the base part by pushing it from above, so that the base part has a very complicated structure, and the procedure for joining the cover part and the base part is also complicated. It is not a simple one, and the work of arranging the contacts is complicated, and mass production by flow work is difficult.

An object of the present invention is to provide an electrical connector receptacle that can solve the above-mentioned conventional problems.

The electrical connector receptacle according to the present invention is of a type to be mounted on a printed circuit board, has a plug insertion end and a rear end opposite to the plug insertion end, and extends inward from the plug insertion end. An insulating housing having a plug insertion hole and having a block receiving opening at the rear end thereof; and a contact holding block which is coupled to the insulating housing only by being inserted straight into the block receiving opening of the insulating housing from the rear side. A mounting portion that extends substantially vertically, a middle portion that extends substantially horizontally forward from the upper end of the mounting portion, and a spring contact portion that extends downward from the front end of the middle portion and obliquely toward the mounting portion. A plurality of contactors formed in advance before being attached to the contactor holding block. Is provided with a plurality of contact holes for receiving and holding the mounting and fixing portions of each of the contacts, and penetrating from the upper wall to the lower wall of the contact hole, and in front of the contact holding block. The wall is provided with a plurality of spring contact portion holding grooves aligned with each of the contact hole, and each of the spring contact portion holding grooves includes a mounting portion of each of the contact elements and a contact element holding groove. The tip of the spring contact part can be received and held from above when the middle part of the contact piece approaches the upper wall of the contact piece holding block by inserting the corresponding contact piece hole of the block from above. Each of the contacts has a mounting portion fixed to the corresponding contact hole and a tip of a spring contact portion with respect to the contact holding block separated from the insulating housing. Is the above The contact holding block, which is arranged so as to be held in the corresponding spring contact portion holding groove, is provided inside the upper wall of the insulating housing near the plug insertion hole. A plurality of compartment grooves are provided to respectively receive a connecting portion between an intermediate portion of each contactor and a spring contact portion when being coupled to the insulating housing so as to be inserted from the rear into the block receiving opening. The spring contact portion of each contact is connected from the upper part of the insulating housing with the connecting portion held in the corresponding compartment groove and the tip thereof held in the corresponding spring contact portion holding groove. It is arranged so as to extend obliquely toward the rear end toward the rear end into the plug insertion hole, and an intermediate portion of each contact is formed by the upper wall of the insulating housing. It is substantially completely shielded from the outside above the insulating housing, and is substantially entirely closely contacted and pressed from above by the inside of the upper wall of the insulating housing, and the plug insertion hole is provided with the spring. The printed circuit board of the insulating housing is sized to receive a plug connector that includes a plurality of contact members that expose the contact portions that engage with the contact portions on the upper side and that includes a latch member on the lower side. A retainer surface is provided on the lower wall placed above so as to face the front end of the plug insertion hole, and the retainer surface is provided with the latch member when the plug connector is inserted into the plug insertion hole. To retain the connection of the plug connector to the electrical connector receptacle.

Embodiments Next, the present invention will be described in more detail with reference to FIGS. 1 to 13 of the accompanying drawings.

FIG. 1 is an exploded and enlarged rear perspective view of an electrical connector receptacle as an embodiment of the present invention, in which a part is broken, FIG. 2 is a plan view of an insulating housing, and FIG. 3 is a front view thereof.
FIG. 4 is its rear view, FIG. 5 is its right side view, and FIG.
FIG. 7 is a bottom view thereof, and FIG. 7 is AA of FIG.
A sectional view taken along the line shows a state in which a contactor holding block and a contactor, which will be described later, are arranged.
A sectional view taken along line -B shows a state in which a contactor holding block and a contactor are arranged. Furthermore, FIG.
A plan view of the contact holding block, FIG. 10 is its front view, FIG. 11 is its bottom view, FIG. 12 is its right side view, and FIG. 13 is its rear view.

As shown in these figures, the electrical connector receptacle of this embodiment has an insulating housing 100 integrally molded with an insulating material such as plastic, and an insulating housing 100 inserted into the insulating housing through a rear opening. Contact holding block 200 for holding a contact
And a plurality of contacts 300 and 400 arranged inside the insulating housing at intervals.

The insulating housing 100 has a plug insertion end 101 and a rear end 102 opposite to the plug insertion end 101, a plug insertion hole 107 extending inward from the plug insertion end 101, and four side walls surrounding the plug insertion hole 107, that is, Upper wall 10
3, right side wall 104, left side wall 105, and lower side wall 106
have. A pair of mounting legs 108 are integrally formed on the lower side wall 106.
A slit groove 108A is formed in the groove to facilitate elastic engagement with the mounting hole of the printed circuit board.

The plug insertion hole 107 is surrounded by the upper inner wall 107A, the right inner wall 107B, the left inner wall 107C, and the lower inner wall 107D so as to receive the conventional plug 20 as shown in FIGS. 15 and 16. It is shaped like a size. Retainer surfaces 109 are formed on both sides of the front end of the lower inner wall 107D, similarly to the conventional connector receptacle 10, and are adapted to be engaged by the shoulder portion of the latch arm 21 of the plug connector.

Further, at the position adjacent to the plug insertion end 101 on the upper inner wall 107A of the insulating housing 100, the contacts 300, 4
00 spring contact portions 301 and 401 and the intermediate portion 30
A plurality of, for example, six compartment grooves 110 for receiving only the connecting portions 304, 404 with 2, 402 respectively from the rear end 102 are provided, and these compartment grooves 110 are provided.
Are separated by partition walls 110A. As shown in FIG. 1, FIG. 7 and FIG. 8, the upper inner wall 107 is substantially flat except for the portion where the compartment groove 110 is provided. This facilitates molding of the insulating housing.

A block receiving opening 111 for receiving the contact holding block 200 is provided at the rear end 102 of the insulating housing 100, and the right inner wall 107B and the left inner wall 107C forming the block receiving opening 111 are in contact with each other. A guide rail 112 for guiding the child holding block 200 is formed, and the guide rail 1 is further formed.
An engaging protrusion 113 having a groove 113A and a slope 113B is provided below the engaging protrusion 113, and an engaging protrusion engaging with the lower groove of the block 200 is provided below the engaging protrusion 113. ing. Further, a contact surface 115 that contacts the abutting projection 209 of the block 200 and stops the advance of the block is provided in the front of the block receiving hole 111.

Furthermore, a rear lower side wall 107E is provided below the rear end 102 of the insulating housing 100, and the attachment fixing portions 303, 403 of the contacts 300, 400 are provided on the rear lower side wall.
There are six mounting grooves 116, 117 for receiving the.

As best shown in FIGS. 1 and 9 to 13, the contact holding block 200 is a substantially rectangular block and has six side walls, that is, an upper side wall 201.
Right side wall 202, left side wall 203, lower side wall 204, front side wall 2
05, the rear side wall 206.

In the upper side wall 201, a plurality of contact holes 207, which are arranged in a zigzag pattern and have a square cross section as a mounting / fixing part holding part, penetrate to the lower side wall 204. Further, from the front side of the upper side wall 201 to the front side wall 205, a plurality of holding grooves 208 as spring contact part holding grooves for receiving and holding the front ends of the contact portions 301, 401 of the contactors 300, 400 are provided.

An abutting protrusion 209 having a groove 209A inside is formed above the front ends of the right side face 202 and the left side face 203, and further extends forward from the lower rear part of the side faces 202, 203. A locking tongue 210 is provided, and the locking tongue 210 has an inclined surface 211A and a locking surface 211B at its tip.
A locking projection 211 having a groove is formed, and a projection 212 for compensating the strength of the locking tongue 210 is provided behind the locking projection 211.

The rear side wall 206 is inclined at the same angle as the slope of the rear end 102 of the insulating housing 100.

Insulation housing 100 and contact part holding block 200
In this embodiment, there are two types of contacts arranged in the inside, which are slightly different in shape.
0 is a plug insertion toward the rear end 102 from the upper side wall 103 toward the lower side wall 106 facing the plug insertion end 101 at a position adjacent to the plug insertion end 101 of the insulating housing 100, as best shown in FIG. A spring contact portion 301 that extends obliquely into the hole 107, an intermediate portion 302 that extends from the plug insertion end 101 toward the rear end 102 along the upper wall 103, and an upper wall 103 to a lower wall adjacent to the rear end 102. And a fixing portion 303 extending vertically toward 106. The other type of contactor 40
0 is the contact 300 as best shown in FIG.
Similarly to the spring contact portion 401 and the intermediate portion 402
And the attachment fixing portion 403.
Is different from the mounting portion 403 from the intermediate portion 402.
The bending position of the intermediate portion 302 of the contact 300 is
Rear end 1 from the bending position of the attachment fixing part 303 from
It's just being far from 02.

Next, a method for assembling the above-described embodiment of the electrical connector receptacle of the present invention will be described.

(1) First, a contactor 30 having a spring preformed in a shape as well shown in FIGS. 7 and 8.
0 and 400 are prepared, the attachment fixing portions 303 and 403 of the contact pieces 300 and 400 are inserted into the contact piece holes 207 of the contact piece holding block 200 as shown in FIG. 1, and the tips of the spring contact parts 301 and 401 are prepared. The contact holding block 20
Each of the holding grooves 208 of 0 is inserted. In this case, the attachment fixing portion 303 of the contact 300 is not
The contact fixing portion 403 of the contact 400 is inserted into the contact hole 207 close to 06, and is inserted into the contact hole 207 close to the front side wall 205.

(2) Next, the contactor holding block 200 having the contacts 300 and 400 incorporated therein is inserted straight into the block receiving hole 111 provided at the rear end of the insulating housing 100 from the rear side. Then, the contact holding block 200 is linearly inserted by the guide of the guide rail 112 provided in the block receiving hole 111, and the block 200 is assembled without rattling. The connecting portions 304 and 404 of the contacts are inserted into the compartment groove 110 of the insulating housing 100, and the locking tongue 210 of the block 200 has a sloped surface of the locking protrusion 211 provided at the tip thereof. 211A and the inclined surface 113B of the locking projection 113 of the insulating housing 100 come into contact with each other, and the locking tongue 2
The tip of 10 is displaced inward, and the locking projection 211 finally gets over the locking projection 113 and is locked with the snap.

Further, at that time, the front surface of the abutting protrusion 209 of the block 200 is brought into contact with the contact surface 115 of the insulating housing 100 to prevent the block 200 from advancing.

As a result, the assembly is completed. In the completed assembly state, as shown in FIGS. 7 and 8, the intermediate portions 302 of the contacts 300, 400 are 402 is completely shielded from the outside above the insulating housing by the upper wall of the insulating housing 100. In addition, the intermediate portion 3 of each contact 300, 400
02 and 402 are closely contacted by the flat upper inner wall 107 of the insulating housing 100 and are pressed from above as a whole, so that even when the electrical connector receptacle is mounted on the printed circuit board as it is, each contact 300, Four
Insulation housing 1 has fixing parts 303 and 403 of 00.
There is no possibility of shifting upward with respect to 00.

The embodiment described above is the contact hole 20 of the block 200.
Although the attachment and fixing portions 303 and 403 of the contacts are simply inserted into the contact 7, the contacts 303 and 403 may easily come off from the contact holes 207. As a countermeasure for this, the contact holes are filled with an adhesive and the attachment fixing portions 303 and 403 are inserted and fixed, or when the block 200 is molded, the contacts are arranged in advance in a predetermined array in a molding die. It may be integrally molded with the block 200.

FIG. 14 is a view similar to FIG. 1 showing a modified example of the electrical connector receptacle of the present invention. The upper inner wall 107 in the insertion hole 107 of the insulating housing 100 'of this modification
A'is a partition wall 110A 'having a ridge which is continuous to the rear end of the partition wall 110A similar to that of the first embodiment.
Are formed. The partition wall 110A 'prevents lateral vibration of the connecting portion of the contactor when the contactor is assembled.
Other configurations may be substantially the same as those of the embodiment of the present invention shown in FIG. 1 and will not be described repeatedly.

Further, the holding groove 20 provided in the above-described embodiment of the present invention is formed on the upper side wall 201 'of the contact holding block 200'.
8, an embedding groove 208 'for embedding about half the outer diameter of the middle portion of the contact is formed and continues to the contact hole. As a result, even if a contactor is incorporated in the block 200 ', lateral shake of the contactor can be prevented. Other configurations may be substantially the same as those of the embodiment of the present invention, and thus will not be described repeatedly.

Further, the contact pieces 300 'and 400' are provided with a substantially inverted triangle-shaped retaining projection 303A above the attachment fixing portions 303 'and 403'. As a result, the contacts 300 'and 400' are connected to the contact holes 2 of the block 200.
Even if it is installed in 07 ',
It will not get out of the 7 ', making the installation very convenient. Other configurations may be almost the same as those of the embodiment of the present invention, and thus will not be described repeatedly.

In the modified example of FIG. 14, the insulating housing 100 '
Although the partition 110A 'is formed in the above, the partition 110A' on the side of the insulating housing 100 'may be omitted if the embedded groove 208' formed in the contact holding block 200 'is deepened and lengthened to some extent.

EFFECTS OF THE INVENTION Since the electrical connector receptacle of the present invention has the structure as described above, the following effects can be obtained.

(1) The contactor can be disposed in the insulating housing by simply disposing the contactor molded in a predetermined shape in the contactor holding block and connecting the contactor holding block straight to the insulating housing from the rear. Therefore, the work of arranging the contacts is extremely simplified, the connector assembling process can be subdivided into a flow work, the mass production effect can be improved, and the cost of the entire connector can be reduced.

(2) In addition, since the middle part of each contact can be completely shielded from the outside above the insulating housing by the upper wall of the insulating housing, even a part of the middle part is exposed from above the insulating housing. Since this is not the case, it is possible to prevent an accident such as a short circuit between the contacts due to dust accumulation or the like.

(3) When the insulating housing and the contact holding block are combined, the middle part of each contact is closely contacted by the upper inner wall of the insulating housing and pressed from above, so that this electrical connector receptacle is left as it is. Even when mounted on the printed circuit board, there is no risk that the mounting and fixing parts of the respective contact elements will be displaced upward with respect to the insulating housing, so that the mounting on the printed circuit board can be easily performed.

(4) In addition to the effects described above, the electrical connector receptacle of the present invention, when mounted on a printed circuit board,
When the plug connector is coupled, a latch member for holding the coupling is located below, that is, the latch member is of a type protected between the plug connector body and the printed circuit board side. Therefore, there is no possibility that the latch member will be accidentally pressed and the plug connector will come off from the electrical connector receptacle.

[Brief description of drawings]

1 is a partially cutaway exploded enlarged rear perspective view of an electrical connector receptacle as an embodiment of the present invention, FIG. 2 is a plan view of an insulating housing of the electrical connector receptacle of FIG. 1, and FIG. 2 is a front view of the insulating housing of FIG. 2, FIG. 4 is a rear view of the insulating housing of FIG. 2, and FIG.
2 is a right side view of the insulating housing of FIG. 2, FIG. 6 is a bottom view of the insulating housing of FIG. 2, and FIG. 7 is AA of FIG.
FIG. 8 is a sectional view taken along the line and showing a state in which the contactor holding block and the contactor are arranged. FIG. 8 is a sectional view taken along line BB in FIG. 2 and showing a state in which the contactor holding block and the contactor are arranged. 9 is a plan view of the contact holding block of the electrical connector receptacle of FIG. 1, FIG. 10 is a front view of the contact holding block of FIG. 9, and FIG. 11 is FIG. 12 is a bottom view of the contact holding block of FIG. 12, FIG. 12 is a right side view of the contact holding block of FIG. 9, FIG. 13 is a rear view of the contact holding block of FIG. 9, and FIG. The same figure as FIG. 1 which shows the modification of the electrical connector receptacle of invention, 1st figure
FIG. 5 is a perspective view showing an example of a conventional modular connector, and FIG. 16 is a sectional view showing a fitted state of the modular connector of FIG. 100 ... Insulating housing, 101 ... Plug insertion end, 102 ... Rear end, 103 ... Upper side wall, 104 ... Right side wall, 105 ... Left side wall, 106 ... Lower side wall, 107 ... Plug insertion hole, 108 ... Mounting leg, 110 ... Partition groove, 110A ... Partition wall, 111 ... Block receiving opening, 113 ... Locking protrusion, 116, 117 ... Mounting groove, 200 ... Contact holding block, 201 ... ... upper side wall, 202 ... right side wall, 203 ... left side wall, 204 ... lower side wall, 205 ... front side wall, 206 ... rear side wall, 207 ... contact hole, 208 ... holding groove, 210 ... Locking tongue, 300 ... contactor, 301 ... spring contact part, 302 ... intermediate part, 303 ... mounting and fixing part, 304 ... connecting part, 400 ... contactor, 401 ... spring contact part, 402 ... middle , 403 ...... attachment fixing portion, 404 ...... articulation, 20 ...... plug, 22 ...... contact portion, 30 ...... PCB.

Claims (1)

[Claims] 1. An electric connector receptacle of a type to be mounted on a printed circuit board, which has a plug insertion end and a rear end opposite to the plug insertion end, and has a plug insertion hole extending inward from the plug insertion end. An insulating housing having a block receiving opening at its end, a contact holding block which is joined to the insulating housing only by being inserted straight into the block receiving opening of the insulating housing from the rear, and a mounting fixing portion extending substantially vertically, The contact holding block is formed in a shape having an intermediate portion that extends substantially horizontally forward from the upper end portion of the attachment fixing portion and a spring contact portion that extends downward from the front end of the intermediate portion and obliquely toward the attachment fixing portion. A plurality of contactors formed in advance before being attached to the contactor holding block; A plurality of contactor holes for receiving and holding the contactor holes are provided so as to penetrate from the upper wall to the lower wall, and the front wall of the contactor holding block is provided with each of the contactor holes. A plurality of aligned spring contact portion holding grooves are provided, and each of the spring contact portion holding grooves is arranged such that the mounting and fixing portion of each of the contactors is inserted into the corresponding contactor hole of the contactor holding block from above. Insert it,
When the intermediate portion of the contactor is close to the upper wall of the contactor holding block, the tip of the spring contactor is shaped to be received and held from above, and each contactor is separated from the insulating housing. With respect to the contact holding block in the separated state, the attachment fixing portion is held in each corresponding contact hole, and the tip of the spring contact portion is held in each corresponding spring contact portion holding groove. The contact holding block having the contact is disposed inside the upper wall of the insulating housing near the plug insertion hole so that the contact holding block is inserted into the block receiving opening from the rear side. A plurality of compartment grooves are provided for receiving the connecting portions of the intermediate portion and the spring contact portion of each contact when coupled to the insulating housing. The pulling contact part is connected from the upper part to the lower part of the insulating housing with the connecting part held in the corresponding compartment grooves and the tip end held in the corresponding spring contact part holding grooves. It is arranged so as to extend obliquely toward the rear end into the plug insertion hole, and the middle portion of each contact is substantially completely removed from the outside above the insulating housing by the upper wall of the insulating housing. And is pressed from above by the inner side of the upper wall of the insulating housing substantially intimately over the whole, and the plug insertion hole has an upper side contact portion that engages with the spring contact portion. Sized to receive a plug connector having a plurality of exposed contact members and a latch member on the underside thereof, A retainer surface is provided on a lower wall placed on the substrate so as to face the front end of the plug insertion hole, and the retainer surface is provided with the latch when the plug connector is inserted into the plug insertion hole. An electrical connector receptacle for engaging a member to retain the connection of the plug connector to the electrical connector receptacle.