JP7164863B2 - electrical connector - Google Patents

Description

The present invention relates to electrical connectors. In particular, in an electrical connector in which a socket connector connected to the ends of a plurality of electric wires and a base connector mounted on a printed circuit board are detachably fitted, when the socket connector is pulled out from the base connector, the base may be pulled out by prying. The present invention relates to an electrical connector structure capable of avoiding connector damage.

2. Description of the Related Art A so-called board-to-wire electrical connector is known, in which a socket connector connected to terminals of a plurality of wires and a base connector mounted on a printed circuit board are detachably fitted. Such electrical connectors are provided with a locking mechanism to ensure the connection between the base connector and the socket connector.

For example, a socket connector with a lock mechanism has been disclosed that can be unlocked with a relatively weak force or can be inserted into a base connector, thereby simplifying the configuration of the mold (see, for example, Patent Document 1).

JP-A-2005-50620

FIG. 7 is a perspective view showing the configuration of a conventional electrical connector, and shows a state in which a socket connector with a locking mechanism and a base connector into which the socket connector is inserted/extracted are arranged facing each other.

FIG. 8 is a perspective view of a socket connector with a locking mechanism that constitutes a conventional electrical connector. FIG. 9 is a vertical cross-sectional view of a socket connector with a locking mechanism and a base connector, which constitute a conventional electrical connector, in a connected state.

FIG. 10 is a plan view of a socket connector with a locking mechanism that constitutes a conventional electrical connector. 7 to 10 of the present application correspond to FIGS. 1 to 4 of Patent Document 1. FIG.

Referring to FIG. 7, a prior art electrical connector 100 consists of a rectangular socket connector 8 and a rectangular base connector 9 . The socket connector 8 is connected to terminals of a plurality of electric wires W. As shown in FIG. The base connector 9 is mounted on the printed circuit board 9p.

7 or 9, the socket connector 8 comprises a housing 81 having insulating properties and a plurality of socket contacts 82. As shown in FIG. The base connector 9 has an insulating housing 91 and a plurality of pin contacts 92 .

7 to 10, the housing 81 has a rectangular frame portion 81f and a lock arm 81r. The lock arm 81r is elastically supported on one surface of the frame portion 81f by a pair of support portions 811 (see FIG. 8).

Referring to FIG. 9, when the base end portion 81b of the lock arm 81r is pushed toward one surface of the frame portion 81f, the lock claw 81n formed at the tip portion of the lock arm 81r can be lifted. When the base end portion 81b of the lock arm 81r is released, the lock claw 81n can be returned to its initial state.

Also referring to FIG. 7, the housing 81 has a plurality of cavities 81c. These cavities 81c can accommodate socket contacts 82 with wires W (see FIG. 9).

Referring to FIG. 9, socket contact 82 has insulation barrel 821 , conductor barrel 822 and open barrel 823 . The insulation barrel 821 fixes the wire W by crimping the wire W over the coating. The conductor barrel 822 is electrically connected to the core wire Wc of the electric wire W by crimping the core wire Wc of the electric wire W. As shown in FIG. When the pin contact 92 is introduced into the open barrel 823 , the pin contact 92 can be electrically connected to the open barrel 823 by sandwiching the pin contact 92 .

Referring to FIG. 7, the housing 91 has a recess 91c with a rectangular opening. The frame portion 81f of the housing 81 can be introduced into the recess 91c (see FIG. 9). Referring to FIG. 7, when the socket connector 8 is moved toward the base connector 9 (in the direction of arrow A in the figure), the outer wall of the frame portion 81f is restricted by the inner wall of the recess 91c, and the socket connector 8 is held in a fixed position. Can be inserted to depth.

Referring to FIG. 7, such electrical connectors are generally called vertical mount connectors or It's called a top connector.

Further, referring to FIG. 7, the housing 91 has a mountain range-shaped latch portion 91r formed on one surface of the outer wall. When the socket connector 8 is moved toward the base connector 9, the lock claw 81n of the lock arm 81r climbs over the latch portion 91r and then elastically returns to engage with the latch portion 91r (see FIG. 9). That is, the socket connector 8 can be locked with respect to the base connector 9 .

Referring to FIG. 9, pin contact 92 is fixed to the bottom wall of housing 91 at its middle portion. One end side of the pin contact 92 protrudes from the bottom surface of the recess 91c. One end side of the pin contact 92 can be electrically connected to the socket contact 82 .

9, the other end side of the pin contact 92 protrudes from the bottom surface of the housing 91. As shown in FIG. The other end of the pin contact 92 can be soldered to a through hole (not shown) formed in the printed circuit board 9p. Then, the pin contact 92 and the printed circuit board 9p can be electrically connected.

However, referring to FIGS. 7 to 10, when the socket connector 8 is pulled out from the base connector 9 after the lock of the socket connector 8 is released (in the direction of arrow B in the drawings), the housing If the socket connector 8 is pulled out while the housing 81 is tilted with respect to 91, an excessive prying force acts on the housing 91, and there is a fear that the outer wall of the housing 91 will be damaged. Since the operation of pulling out the socket connector 8 from the base connector 9 is performed manually, it was difficult to prevent pulling out by prying. If the outer wall of the housing 91 is thickened, there is no fear of damaging the outer wall of the housing 91, but there are problems of reducing the mounting area of the printed circuit board 9p and of damaging the socket connector 8 side.

What is needed is an electrical connector that avoids damage to the connector due to prying when the socket connector is pulled out from the base connector. And the above can be said to be the subject of the present invention.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrical connector capable of avoiding damage to the connector due to prying when pulling out the socket connector from the base connector.

The inventors of the present invention provided the first housing with a pair of first restricting walls substantially perpendicular to the longitudinal direction of the recess on one inner wall of the recess, and the second housing protruded from one of the second side walls of the second housing. provided with a pair of projections, and the recess is provided with a first relief portion for escaping the first side wall of the second housing in the inclined state and a second relief portion for escaping the projection of the second housing in the inclined state, It is thought that damage to the connector due to prying out can be avoided when the second housing is pulled out from the recess after the second housing has been introduced into the recess, and based on this, the following new electrical connector is invented. reached.

(1) An electrical connector according to the present invention comprises a pair of a rectangular first connector and a rectangular second connector, wherein the second connector is detachable from the first connector, The first connector includes a first housing having a recess with a rectangular opening on one side, and the second connector includes a second housing having an outer shell formed with a rectangular frame portion that can be introduced into the recess. , the first housing has a pair of first regulating walls on one inner wall of the recess substantially perpendicular to the longitudinal direction of the recess, and the second housing extends in a direction substantially perpendicular to the longitudinal direction of the frame. a pair of first side walls formed along the longitudinal direction of the frame portion; a pair of second side walls formed along the longitudinal direction of the frame portion; and a pair of protrusions protruding from a surface of one of the second side walls; is formed on the bottom side of the frame portion and has a side surface that is continuous with the first side wall and is regulated by the first regulation wall; a first relief portion for escaping the inclined first side wall tilted in a direction substantially orthogonal to the first regulation wall; and a second relief portion that is tilted in a direction substantially perpendicular to the 1 restriction wall and that escapes the protrusion in the inclined state, and when the frame portion is pulled out from the recessed portion after the frame portion has been introduced into the recessed portion. , damage to the first connector caused by prying out can be avoided.

(2) The first housing has a pair of second restricting walls formed along the longitudinal direction of the recess to surround the recess and restrict engagement of the pair of second side walls. The second control wall has a pair of the second escape portions at both ends, and the other second control wall has a stepped portion at the center portion which is lower than the one of the second control walls. Further, it is preferable that the step portion and the other end portion of the second control wall are continuous with a chamfered inclined surface.

(3) The first housing has a suction area on the bottom surface of the recess that can be sucked by a suction pad provided on an automatic mounting machine, and the suction area is cut out at the center of the other second regulation wall. Moreover, it is preferable to include a notch portion forming a bottom surface continuous with the bottom surface of the recess.

(4) The first connector comprises a base connector that can be mounted on a printed circuit board, the second connector comprises a socket connector connected to terminals of a plurality of electric wires, and the first housing has connection terminals that are located in the recesses. The second housing has a plurality of pin-shaped first contacts that protrude from the bottom surface, lead terminals can be soldered to the surface of the printed circuit board, and are fixed to the first housing. Further, it is preferable that a connection portion continuous with the connection portion can be connected to the first contact and has a plurality of bellows-shaped second contacts arranged inside the second housing.

In the electrical connector according to the present invention, the first housing is provided with a pair of first restricting walls substantially orthogonal to the longitudinal direction of the recess on one inner wall of the recess, and the second housing is provided with a pair of first restriction walls extending from one of the second side walls. By providing a pair of protruding projections, and providing a first relief portion for escaping the first side wall of the inclined second housing and a second relief portion for escaping the projection of the inclined second housing in the recess. When the second housing is pulled out from the recess after the second housing has been introduced into the recess, it is possible to avoid damage to the connector due to prying out.

1 is a perspective view showing the configuration of an electrical connector according to an embodiment of the present invention, and is a state diagram in which a first connector and a second connector constituting the electrical connector are arranged to face each other; FIG. FIG. 2 is a perspective view showing the configuration of the electrical connector according to the embodiment, and is a diagram showing a state in which a first connector and a second connector that constitute the electrical connector are connected. FIG. 2 is a perspective view showing the configuration of the electrical connector according to the embodiment, and is a view of the electrical connector viewed from the opposite direction to FIG. 1; FIG. 4A is a perspective view of a first connector that constitutes the electrical connector according to the embodiment, FIG. 4A is an overall configuration diagram of the first connector, and FIG. 4B is an enlarged view of a main portion of the first connector; . FIG. 5A is a plan view showing an enlarged main portion of a first connector that constitutes the electrical connector according to the embodiment, FIG. It is a state figure where the connector was connected. FIG. 4 is an enlarged perspective view of a second contact provided in a second connector that constitutes the electrical connector according to the embodiment; FIG. 10 is a perspective view showing the configuration of a conventional electrical connector, and is a state diagram in which a socket connector with a lock mechanism and a base connector into which the socket connector is inserted/extracted are arranged to face each other. 1 is a perspective view of a socket connector with a locking mechanism that constitutes a conventional electrical connector; FIG. FIG. 2 is a vertical cross-sectional view of a socket connector with a locking mechanism and a base connector, which constitute an electrical connector according to the prior art, in a connected state; FIG. 2 is a plan view of a socket connector with a locking mechanism that constitutes a conventional electrical connector;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of electrical connector]
First, the configuration of an electrical connector according to one embodiment of the invention will be described. It should be noted that since components denoted by the same reference numerals as those used in the prior art have the same functions, their explanations may be omitted below.

(overall structure)
1 to 6, an electrical connector CN according to an embodiment of the present invention comprises a pair of rectangular first connectors (hereinafter referred to as base connectors) 10 and rectangular second connectors (hereinafter referred to as socket connectors). It consists of 20. A socket connector 20 can be attached to and detached from the base connector 10 of the electrical connector CN (see FIGS. 1 to 3).

1 to 3, base connector 10 is mounted on printed circuit board 9p. The socket connector 20 is connected to terminals of a plurality of electric wires W. As shown in FIG. The base connector 10 includes a first insulating housing 1 and a plurality of pin-shaped first contacts 3 . The socket connector 20 includes a second insulating housing 2 and a plurality of bellows-shaped second contacts 4 (see FIG. 1 or FIG. 6).

1 or 4 and 5(A), the first housing 1 has a recess 11 having a rectangular opening on one side. Referring to FIG. 1 or 3, the second housing 2 has a rectangular frame portion 2f formed on the outer shell. The frame portion 2f can be introduced into the recess 11 of the first housing 1 (see FIG. 2).

1 or 4 and 5, the first housing 1 has a pair of first regulation walls 11w, 11w formed on one inner wall of the recess 11. As shown in FIG. The pair of first regulation walls 11w and 11w are substantially perpendicular to the longitudinal direction of the recess 11. As shown in FIG.

On the other hand, referring to FIG. 1 or FIG. 3 and FIG. 5B, the second housing 2 has a pair of first side walls 21w, 21w and a pair of second side walls 22w, 22w. The pair of first side walls 21w, 21w are formed in a direction substantially perpendicular to the longitudinal direction of the frame portion 2f. The pair of second side walls 22w, 22w are formed along the longitudinal direction of the frame portion 2f.

1 or 3 and 5(B), the second housing 2 further has a pair of square prism-shaped projections 21b, 21b. A pair of projections 21b, 21b protrude from the surface of one second side wall 22w.

Referring to FIG. 1 or FIG. 3 and FIG. 5(B), the pair of projections 21b, 21b are formed on the bottom side of the frame portion 2f. Also, the pair of projections 21b, 21b has a side surface 21s that is continuous with the first side wall 21w and is regulated by the first regulation wall 11w.

1 to 5, the concave portion 11 forms a pair of first relief portions 11e, 11e and a pair of second relief portions 12e, 12e. The pair of first relief portions 11e, 11e are formed at both ends of the recess 11 in the longitudinal direction. The first relief portion 11e can escape the inclined first side wall 21w tilted in a direction substantially orthogonal to the first regulation wall 11w (see FIG. 5B).

Referring to FIG. 1 or FIGS. 4 and 5, the pair of second relief portions 12e, 12e are formed on one inner wall of the recess 11 substantially orthogonal to the longitudinal direction. The second relief portion 12e can escape the inclined projection 21b tilted in a direction substantially perpendicular to the first regulation wall 11w (see FIG. 5B).

Referring to FIGS. 1 to 5, the electrical connector CN according to the embodiment includes a first housing 1 having a pair of first regulation walls 11w, 11w substantially orthogonal to the longitudinal direction of the recess 11 on one inner wall of the recess 11. The second housing 2 is provided with a pair of protrusions 21b and 21b protruding from the surface of one of the second side walls 22w, and the recess 11 is provided with a first protrusion that escapes the first side wall 21w of the second housing 2 in an inclined state. By providing the relief portion 11e and the second relief portion 12e for escaping the protrusion 21b of the second housing 2 in the inclined state, the second housing 2 can be pulled out from the recess 11 after the second housing 2 has been introduced into the recess 11. Sometimes damage to the base connector 10 due to prying out can be avoided.

(Structure of first housing)
Next, the configuration of the first housing 1 according to the embodiment will be described. 1 or 3 to 5, the first housing 1 has a pair of second restricting walls 12w and 13w. A pair of second regulation walls 12 w and 13 w are formed along the longitudinal direction of the recess 11 . One of the second restricting walls 12w has a pair of second relief portions 12e, 12e at both ends. Also, one second regulation wall 12w is partitioned into three (see FIG. 1 or FIG. 4(A)).

Referring to FIG. 1 or FIGS. 3 to 5, the other second regulation wall 13w has a stepped portion 13d in the central portion. The stepped portion 13d is formed lower than one of the second restricting walls 12w. The stepped portion 13d and the end portion of the other second restricting wall 13w are continuous with a chamfered inclined surface 13s. As a result, when the second housing 2 is tilted in the direction of arrow X in FIG. Damage to the regulation wall 13w can be avoided.

Referring to FIG. 4, the first housing 1 has a suction area 11v on the bottom surface of the recess 11. As shown in FIG. The adsorption area 11v includes a notch 11k (see FIGS. 1 to 3). The cutout portion 11k is cut out in the center portion of the other second regulation wall 13w. Moreover, the notch 11 k forms a bottom surface that is continuous with the bottom surface of the recess 11 .

1 to 3 and 4B, a suction pad (not shown) provided on the automatic mounting machine is brought into contact with the suction area 11v to suck the bottom surface of the concave portion 11 of the first housing 1. , the base connector 10 can be moved to the printed circuit board 9p.

1 or 4A, the first housing 1 has a pair of lock levers 12r, 12r on one inner wall of the recess 11. As shown in FIG. These lock levers 12 r and 12 r are erected from the bottom surface of the recess 11 . Also, the lock lever 12r has a lock claw 12n formed at its tip. The lock claw 12n protrudes toward the central portion of the recess 11. As shown in FIG.

On the other hand, referring to FIG. 3, the second housing 2 has a plurality of locking projections 22b. A plurality of locking protrusions 22b protrude from one side of the second side wall 22w of the second housing 2 .

1 or 3, when the socket connector 20 is moved toward the base connector 10, the locking projection 22n overcomes the locking claw 12n of the locking lever 12r, and then the locking claw 12n elastically returns to lock. It can be locked to the projection 22b. That is, the socket connector 20 can be locked with respect to the base connector 10 (see FIG. 2). The lock can be released by pulling out the socket connector 20 from the base connector 10 with a strong force that the locking projection 22b overcomes the lock claw 12n of the lock lever 12r.

Referring to FIGS. 1 to 5, the base connector 10 according to the embodiment discloses a connector in which the first contact 3 has 25 poles. For example, if the socket connector 20 is configured with a 26-pole connector, the pair of protrusions 21b and 21b are blocked by the pair of first regulation walls 11w and 11w (see FIG. 5B), so that the base connector 10 and the socket connector 20 can be prevented.

On the other hand, referring to FIG. 5B, for example, if the socket connector 20 is composed of a 24-pole connector, the pair of protrusions 21b and 21b are blocked by the walls facing the pair of first regulation walls 11w and 11w. Therefore, erroneous connection between the base connector 10 and the socket connector 20 can be prevented. In this manner, the pair of projections 21b and 21b constitute an erroneous insertion prevention key that prevents mating of connectors of different polarities.

(Configuration of second housing)
Next, the configuration of the second housing 2 according to the embodiment will be described. Referring to FIG. 5(B), the second housing 2 has a first slot (not shown) and a second slot 22 . A first slot (not shown) is recessed from the bottom surface of the second housing 2 . The second contact 4 can be accommodated in the first slot 31 (not shown) (see FIG. 6).

Referring to FIG. 5B, the second slot 22 communicates with the first slot (not shown). The ends of the electric wires W covered with insulation can be introduced into the second slots 22 from the outer peripheral direction (see FIGS. 1 to 3). The opening side of the second slot 22 is narrowed in an Ω shape so that the electric wire W is difficult to separate from the second housing 2 .

5B, the end of the wire W can be fixed to the second housing 2 by introducing the end of the wire W into the second slot 22 from the outer peripheral direction. Further, when the end of the electric wire W is introduced into the second slot 22 from its outer peripheral direction, the second contact 4 and the core wire Wc of the electric wire W can be electrically connected (see FIG. 6).

(Structure of first contact)
Next, the configuration of the first contact 3 according to the embodiment will be described. 1 to 3, the first contact 3 is electrically conductive. By stamping a conductive metal plate, a conductive pin-shaped first contact 3 having a desired shape can be obtained. For example, a copper alloy is preferably used for the first contact 3 in consideration of ease of processing, spring characteristics, conductivity, etc. However, the material is not limited to a copper alloy.

Referring to FIG. 4 or 5, the first contact 3 has a lead terminal 3r. The lead terminal 3r is continuous with the connection terminal 3c. By soldering the lead terminal 3r to a pattern (not shown) on the surface of the printed circuit board 9p, the base connector 10 can be mounted on the printed circuit board 9p (see FIGS. 1 to 3).

Referring to FIG. 4 or 5, the first contact 3 is bent at a substantially right angle to mount the lead terminal 3r on the surface of the printed circuit board 9p with respect to the connection terminal 3c. The connection terminal 3 c protrudes from the bottom surface of the recess 11 . The first contact 3 can be fixed to the first housing 1 by press-fitting the connection terminal 3 c from the bottom side of the first housing 1 . The first contact 3 can also be fixed to the first housing 1 by integrally molding a part of the first contact 3 with the first housing 1 .

(Configuration of second contact)
Next, the configuration of the second contact 4 according to the embodiment will be described. Referring to FIG. 6, the second contact 4 has conductivity. A conductive metal plate can be punched to obtain a conductive second contact 4 having a desired shape. For example, a copper alloy is preferably used for the second contact 4 in consideration of ease of processing, spring characteristics, conductivity, etc., but the material is not limited to a copper alloy.

Referring to FIG. 6, the second contact 4 includes a connection portion 4a and a connection portion 4b. The terminal of the electric wire W can be connected to the connection portion 4a by press connection. The connection portion 4b can be connected to the connection terminal 3c of the first contact 3 (see FIG. 4 or FIG. 5B).

Referring to FIG. 6, the wire connection portion 4a has a strip-shaped first fixing plate 41 and a pair of pressure contact pieces 41a and 41b. The end of the electric wire W can be placed on one surface of the first fixing plate 41 from the outer peripheral direction. One pressing piece 41 a is bent at a substantially right angle from the tip of the first fixing plate 41 . The other pressing piece 41b stands upright in a U-turn from the intermediate portion of the first fixing plate 41. As shown in FIG. Also, the pair of pressure contact pieces 41a and 41b has a notch groove 41d which is cut out toward one surface of the first fixing plate 41 so that the core wire of the electric wire W can be introduced from the outer peripheral direction.

Referring to FIG. 6 , the connecting portion 4 b has a strip-shaped second fixing plate 42 and elastic pieces 43 . One surface of the second fixing plate 42 is in close contact with the other surface of the first fixing plate 41 from the tip of the first fixing plate 41 . The second fixing plate 42 extends toward one pressure contact piece 41a.

Referring to FIG. 6, the elastic piece 43 is inverted from the tip of the second fixing plate 42 toward the other surface of the second fixing plate 42 . Further, the elastic piece 43 is arranged in a state where the tip portion of the elastic piece 43 is inclined upward toward the base end portion of the second fixing plate 42 .

Referring to FIG. 6, the elastic piece 43 has a contact portion 43s at its tip. The contact portion 43s is arranged to face the other surface of the second fixed plate 42 with a predetermined gap therebetween. The connection terminal 3c of the first contact 3 can be inserted from between the base end of the second fixing plate 42 and the tip of the elastic piece 43 toward the base end of the elastic piece 43 (FIG. 4 or FIG. 5B). )reference).

5B or 6, the second contact 4 is held in a first slot (not shown) of the second housing 2. As shown in FIG. When the end of the electric wire W is introduced into the second slot 22 from its outer peripheral direction, the pair of press-contact pieces 41a and 41b peel off the coating of the electric wire W and can be electrically connected to the core wire Wc of the electric wire W (see FIG. 6). .

[Function of electrical connector]
Next, the operation and effects of the electrical connector CN according to the embodiment will be described.

Referring to FIGS. 1 to 6, the electrical connector CN according to the embodiment has a first housing 1 in which a pair of first regulation walls 11w, 11w substantially orthogonal to the longitudinal direction of the recess 11 are formed on one inner wall of the recess 11. The second housing 2 is provided with a pair of protrusions 21b and 21b protruding from the surface of one of the second side walls 22w, and the recess 11 is provided with a first protrusion that escapes the first side wall 21w of the second housing 2 in an inclined state. By providing the relief portion 11e and the second relief portion 12e for escaping the protrusion 21b of the second housing 2 in the inclined state, the second housing 2 can be pulled out from the recess 11 after the second housing 2 has been introduced into the recess 11. Sometimes, even if the second housing 2 is tilted in the Y1 or Y2 direction (see FIG. 1 or 2), damage to the base connector 10 caused by prying out can be avoided.

Referring to FIG. 1 or FIGS. 3 to 5, the stepped portion 13d and the end portion of the other second restricting wall 13w are continuous with a chamfered inclined surface 13s. As a result, when the second housing 2 is tilted in the direction of arrow X in FIG. Damage to the regulation wall 13w can be avoided.

1 or 2 and 4, the first housing 1 has a suction area 11v on the bottom surface of the recess 11 that can be sucked by a suction pad (not shown) provided on the automatic mounting machine. The region 11 v includes a notch portion 11 k that is cut in the center of the other second regulation wall 13 w and that forms a bottom surface that is continuous with the bottom surface of the recess 11 . As a result, the base connector 10 can be transferred by a suction pad (not shown) provided on the automatic mounting machine.

The present invention can provide an electrical connector that can avoid damage to the first connector caused by prying out when the second connector is pulled out from the first connector.

In the electrical connector according to the present invention, the top connector that can be coupled with the first connector by moving the second connector in the vertical direction with respect to the printed circuit board on which the first connector is mounted is disclosed in the embodiment, but the present invention does not. The electrical connector according to can also be applied to a side connector that can be coupled with the first connector by moving the second connector horizontally with respect to the printed circuit board on which the first connector is mounted.

1 first housing 2 second housing 2f frame portion 10 base connector (first connector)
Reference Signs List 11 recessed portion 11e first relief portion 11w, 11w pair of first restriction walls 12e second relief portion 20 socket connector (second connector)
21b, 21b pair of protrusions 21s side surface of protrusion 21w, 21w pair of first side walls 22w, 22w pair of second side walls CN electrical connector

Claims (2)

An electrical connector comprising a pair of a square first connector and a square second connector, wherein the second connector is detachable from the first connector,
The first connector comprises a first housing having a recess with a rectangular opening on one side,
The second connector includes a second housing having an outer shell formed with a rectangular frame portion that can be freely introduced into the recess,
The first housing has a pair of first regulation walls substantially orthogonal to the longitudinal direction of the recess on one inner wall of the recess,
The second housing is
a pair of first side walls formed in a direction substantially perpendicular to the longitudinal direction of the frame;
a pair of second side walls formed along the longitudinal direction of the frame;
a pair of protrusions protruding from the surface of one of the second side walls,
the projection is formed on the bottom side of the frame portion and has a side surface that is continuous with the first side wall and is regulated by the first regulation wall;
The recess is
first relief portions formed at both ends in the longitudinal direction of the recess and escaping the inclined first side wall tilted in a direction substantially orthogonal to the first regulation wall;
a second relief portion formed on one inner wall substantially perpendicular to the longitudinal direction of the recess, and adapted to escape the projection tilted in a direction substantially perpendicular to the first regulation wall;
Avoiding damage to the first connector caused by prying out when pulling out the frame portion from the recessed portion after the frame portion has been introduced into the recessed portion.can
The first housing has a pair of second restriction walls formed along the longitudinal direction of the recess, enclosing the recess, and restricting engagement of the pair of second side walls,
one of the second regulation walls has a pair of the second relief portions at both ends,
the other second restricting wall has a stepped portion in the center portion formed lower than the one second restricting wall,
the stepped portion and the other end portion of the second restricting wall are continuous with a chamfered inclined surface,
PreviousThe first housing has a suction area on the bottom surface of the recess that can be suctioned by a suction pad provided on an automatic mounting machine,
The adsorption region includes a notch formed in a central portion of the other second regulation wall and forming a bottom surface that is continuous with the bottom surface of the recess. electrical connector. the first connector comprises a base connector that can be mounted on a printed circuit board;
the second connector comprises a socket connector connected to terminals of a plurality of electric wires,
The first housing has a plurality of pin-shaped first contacts fixed to the first housing, the connection terminals protruding from the bottom surface of the recess, the lead terminals being solderable to the surface of the printed circuit board, and
The second housing has a connection portion connected to the electric wire, a connection portion continuous with the connection portion can be connected to the first contact, and a plurality of bellows-shaped second contacts arranged inside the second housing. 2. The electrical connector of claim 1 , comprising:

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