CN110911867B

CN110911867B - Electrical connector

Info

Publication number: CN110911867B
Application number: CN201910768416.0A
Authority: CN
Inventors: 工藤广纪; 木全琢也
Original assignee: JST Mfg Co Ltd
Current assignee: JST Mfg Co Ltd
Priority date: 2018-08-27
Filing date: 2019-08-20
Publication date: 2021-04-20
Anticipated expiration: 2039-08-20
Also published as: JP2020035547A; JP7164863B2; CN110911867A

Abstract

The invention provides an electric connector, which can avoid damage of a base connector caused by prying action when a socket connector is pulled out from the base connector. The base connector (10) is provided with a 1 st housing (1) having a recess (11), the receptacle connector (20) is provided with a 2 nd housing (2), and the 2 nd housing has a frame portion (2f) which can be introduced into the recess and which includes a pair of 1 st side walls (21w ) and a pair of 2 nd side walls (22w ). The 1 st case has a pair of 1 st regulating walls (11w ) substantially perpendicular to the longitudinal direction of the recess. The 2 nd case has a pair of projections (21b ) projecting from the surface of one 2 nd side wall (22 w). The recess has a 1 st escape part (11e) for the tilt operation of the 1 st side wall and a 2 nd escape part (12e) for the tilt operation of the projection. When the frame part is pulled out from the recess part (11) from the state that the frame part (2f) is introduced into the recess part, the base connector (10) can be prevented from being damaged due to prying action.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector. More particularly, the present invention relates to an electrical connector in which a receptacle connector to which terminals of a plurality of electric wires are connected and a base connector mounted on a printed circuit board are detachably fitted.

Background

There is known a so-called board-to-wire electrical connector in which a receptacle connector to which terminals of a plurality of wires are connected and a base connector mounted on a printed board are detachably fitted. Such an electrical connector is provided with a locking mechanism for reliably connecting the base connector and the receptacle connector.

For example, there is disclosed a receptacle connector with a lock mechanism which can be unlocked by a relatively weak force or inserted into a base connector and which can simplify the structure of a molding die (see, for example, patent document 1).

In patent document 1, a receptacle connector includes an insulative housing and a plurality of receptacle contacts. The base connector includes an insulating housing mounted on a printed circuit board and a plurality of pin contacts. The receptacle connector can be coupled to the base connector by moving in a direction perpendicular to the printed substrate. Such electrical connectors are generally referred to as vertical mount type connectors or top connectors (top connectors).

In the above coupling, the lock claw provided at the tip of the lock arm elastically supported by the housing of the receptacle connector passes over the latch portion provided in the housing of the base connector. Thereby, the locking claw is locked with the latch portion, and the receptacle connector is locked with respect to the base connector.

Documents of the prior art

Patent document 1: japanese laid-open patent publication No. 2005-50620

Disclosure of Invention

Problems to be solved by the invention

When the receptacle connector is pulled out from the base connector after the receptacle connector is unlocked, the receptacle connector tends to be pried out. That is, the receptacle connector is pulled out while the housing of the receptacle connector is tilted in various directions with respect to the housing of the base connector. When the receptacle connector is pulled out in accordance with such prying operation, an excessive prying force acts on the housing of the receptacle connector, and there is a concern that the outer wall of the housing of the receptacle connector may be damaged.

Since the operation of pulling out the receptacle connector from the base connector is performed manually, it is difficult to prevent the pulling-out accompanied by the prying operation. For example, if the thickness of the outer wall of the housing of the base connector can be increased, there is almost no adverse effect due to damage to the outer wall of the housing, but there is a problem that the mounting area of the printed circuit board is reduced or the side of the receptacle connector is damaged.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electrical connector capable of avoiding damage to the connector due to prying operation when the receptacle connector is pulled out from the base connector.

Means for solving the problems

The present inventors have completed the following inventions of a new electrical connector: in a 1 st housing and a 2 nd housing which can be introduced into a recess of a connector to be connected, a restriction wall for positioning the 2 nd housing and a relief portion for prying the 2 nd housing are provided in the 1 st housing at a predetermined portion, and a projection for preventing excessive prying operation while being position-controlled by the restriction wall of the 1 st housing is provided in the 2 nd housing so as to be accommodated in the predetermined relief portion.

(1) An electrical connector according to the present invention is an electrical connector including a pair of a first rectangular connector 1 and a second rectangular connector 2, the second connector being attachable to and detachable from the first connector 1, the first connector 1 including a first housing having a recess with one surface thereof opened in a rectangular shape, the second connector including a second housing 2 having a rectangular frame portion insertable into the recess, the first housing having a pair of first limiting walls 1 on one inner wall of the recess, the pair of first limiting walls being perpendicular to a longitudinal direction of the recess, the second housing including: a pair of 1 st side walls perpendicular to a longitudinal direction of the frame portion; a pair of 2 nd side walls along a longitudinal direction of the frame portion; and a pair of projections projecting from a surface of one of the 2 nd side walls, the projections being formed on a bottom side of the frame portion and continuous with the 1 st side wall, and the projections having side surfaces restricted by the 1 st restricting wall to be introduced into the recess, a relief portion being provided in the recess to avoid the 2 nd case from contacting an inner wall of the recess when tilted in a direction substantially perpendicular to the 1 st restricting wall, the relief portion including: 1 st relief portions formed at both longitudinal ends of the recess for the tilting operation of the 1 st side wall; and a 2 nd escape portion formed on one inner wall of the recess perpendicular to a longitudinal direction of the recess, the 2 nd escape portion being capable of avoiding damage to the 1 st connector when the frame portion is pulled out from the recess in a state in which the frame portion is introduced into the recess.

(2) Preferably, the 1 st case has a pair of 2 nd limiting walls formed along a longitudinal direction of the recess, surrounding the recess and limiting fitting of the pair of 2 nd side walls, one of the 2 nd limiting walls has a pair of 2 nd receding portions at both end portions, the other 2 nd limiting wall has a step portion formed lower than the one 2 nd limiting wall at a center side, and the step portion is continuous with an end portion of the other 2 nd limiting wall via a chamfered inclined surface.

(3) Preferably, the 1 st housing has, on a bottom surface of the recess, an adsorption region capable of being adsorbed by an adsorption pad provided in an automatic mounting machine, the adsorption region including a notch portion of the 2 nd limiting wall, the notch portion forming a bottom surface continuous with the bottom surface of the recess at a central portion of the other 2 nd limiting wall.

(4) Preferably, the 1 st connector is a base connector attachable to a printed circuit board, the 2 nd connector is a receptacle connector to which terminals of a plurality of electric wires can be connected, the 1 st housing has a plurality of needle-like 1 st contacts fixed to the 1 st housing, the 1 st contacts are provided at both ends with connection terminals protruding from a bottom surface of the recess and lead terminals solderable to a surface of the printed circuit board, the 2 nd housing has a plurality of wave-like 2 nd contacts arranged inside the 2 nd housing, the 2 nd contacts have wire connection portions connected to the electric wires, and connection portions of the 2 nd contacts continuous with the wire connection portions are connectable to the 1 st contacts.

Effects of the invention

In the electrical connector of the present invention, a pair of 1 st restricting walls substantially perpendicular to the longitudinal direction of the recess are provided on one inner wall of the recess in the 1 st housing, and a pair of projections continuous with the pair of 1 st side walls and projecting from the surface of the one 2 nd side wall are provided on the 2 nd housing, whereby fitting between the connectors is guided so that the projections (side surfaces of the projections) slide on the 1 st restricting walls. Further, by providing the 1 st escape portion for the 1 st side wall of the 2 nd housing in the inclined state and the 2 nd escape portion for the projection of the 2 nd housing in the inclined state in the recess of the 1 st housing, it is possible to avoid damage to the connector due to a prying action when the 2 nd housing is pulled out from the recess in a state where the 2 nd housing is introduced into the recess. Further, even when the housing is pulled out in accordance with such a prying operation, the projection abuts against the 1 st regulating wall, so that the opposing position of the fitting sides of the housings, that is, the opposing position of the bottom of the recess of the 1 st housing and the plane of the connection end of the 2 nd housing is easily held, and is less likely to shift, contributing to prevention of excessive prying operation.

Drawings

Fig. 1 is a perspective view showing a configuration of an electrical connector according to an embodiment of the present invention, and shows a state in which a 1 st connector and a 2 nd connector constituting the electrical connector are arranged to face each other.

Fig. 2 is a perspective view showing the structure of the electrical connector of the embodiment, showing a state in which the 1 st connector and the 2 nd connector constituting the electrical connector are connected.

Fig. 3 is a perspective view showing the structure of the electrical connector of the embodiment, showing an external appearance viewed from a direction opposite to that of fig. 1.

Fig. 4A is a perspective view showing the entire structure of the 1 st connector constituting the electrical connector of the embodiment.

Fig. 4B is an enlarged perspective view of a main portion of the 1 st connector constituting the electrical connector of the embodiment.

Fig. 5A is an enlarged plan view of a main portion of the 1 st connector constituting the electrical connector of the embodiment, showing a state where the 2 nd connector is not connected.

Fig. 5B is an enlarged plan view of a main portion of the 1 st connector constituting the electrical connector of the embodiment, and shows a state in which the 2 nd connector is connected.

Fig. 6 is an enlarged perspective view of the 2 nd contact included in the 2 nd connector constituting the electrical connector according to the embodiment.

Description of the reference symbols

1: 1, a first shell;

2: a 2 nd housing;

2 f: a frame portion;

10: a base connector (1 st connector);

11: a recess;

11 e: a 1 st retreat part;

11w, 11 w: a pair of 1 st limiting walls;

12 e: a 2 nd retreat portion;

20: a receptacle connector (2 nd connector);

21b, 21 b: a pair of protrusions;

21 s: the sides of the protrusion;

21w, 21 w: a pair of No. 1 sidewalls;

22w, 22 w: a pair of No. 2 sidewalls;

CN: an electrical connector.

Detailed Description

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[ Structure of electric connector ]

(Overall Structure)

Referring to fig. 1 to 6, an electrical connector CN according to an embodiment of the present invention includes a set of a square 1 st connector (hereinafter, referred to as a receptacle connector) 10 and a square 2 nd connector (hereinafter, referred to as a receptacle connector) 20. The electrical connector CN is capable of attaching and detaching the receptacle connector 20 to and from the base connector 10.

The dock connector 10 is mounted on the printed substrate 9 p. A plurality of terminals of the electric wires W are connected to the receptacle connector 20. The docking connector 10 includes a 1 st housing 1 having an insulating property and a plurality of 1 st contact 3 having a needle shape. The receptacle connector 20 includes a 2 nd housing 2 having an insulating property and a 2 nd contact 4 having a plurality of waveforms.

The 1 st case 1 has a recess 11 having one surface opened in a rectangular shape. The 2 nd casing 2 has a frame portion 2f of a square shape formed as an outer shell. The frame portion 2f can be introduced into the recess 11 of the 1 st housing 1.

The 1 st case 1 has a pair of 1

st restricting walls

11w, 11w on one inner wall of the recess 11. The pair of first limiting

walls

11w and 11w are provided substantially perpendicular to the longitudinal direction of the recess 11 (see fig. 4A and 4B and fig. 5A and 5B). In addition, a pair of 1 st receding portions 11e and a pair of 2

nd receding portions

12e and 12e, which will be described later, are formed in the recessed portion 11.

On the other hand, the 2 nd case 2 has a pair of 1

st side walls

21w, 21w and a pair of 2

nd side walls

22w, 22 w. The pair of 1

st side walls

21w, 21w are formed in a direction substantially perpendicular to the longitudinal direction of the frame portion 2f, and the pair of 2

nd side walls

22w, 22w are formed along the longitudinal direction of the frame portion 2 f.

Alternatively, the 2 nd housing 2 further has a pair of quadrangular prism-shaped

projections

21b, 21 b. A pair of

projections

21b, 21b project from the surface of one 2 nd side wall 22 w. The projection 21b has a greater degree of projection (projection level) than the projection of the locking projection 22b described later.

The pair of

projections

21b and 21b are formed on the bottom side of the frame portion 2f, are continuous with the 1 st side wall 21w, and have a side surface 21s, and the introduction of the side surface 21s into the recess 11 is restricted by the 1 st restricting wall 11 w. In addition, the side surface 21s may have its end chamfered or rounded (refer to fig. 5B). According to such a configuration, the

projections

21b, 21b are easily guided by the 1 st regulating wall 11w at the initial stage of fitting the connectors to each other.

Further, referring to fig. 5B, as described above, the pair of 1

st receding portions

11e, 11e and the pair of 2

nd receding portions

12e, 12e are formed in the recessed portion 11. The pair of first retreating

portions

11e, 11e are formed at both ends of the recess 11 in the longitudinal direction. Each 1 st escape portion 11e is a space configured such that the inner wall of the recess 11 is partially retracted toward the outer wall of the 1 st case 1. Therefore, the thickness of the portion of the 1 st case 1 where the 1 st escape portion 11e is provided (the short side surface of the 1 st case 1) is smaller than that of the peripheral portion. The 1 st escape portion 11e is configured to be able to escape a tilting operation in which the 1 st side wall 21w shown by a two-dot chain line tilts in a direction substantially perpendicular to the 1 st regulating wall 11 w. In other words, a predetermined space is provided so as to prevent the 1 st side wall 21w involved in the tilting operation from contacting the inner wall of the recess 11 facing the 1 st side wall 21w, and this space functions as the 1 st escape portion 11 e.

The pair of 2

nd receding portions

12e and 12e are formed on one inner wall of the recess 11 substantially perpendicular to the longitudinal direction of the recess 11. Each of the 2 nd escape portions 12e is a space configured to partially retreat the inner wall of the recess 11 toward the outer wall of the 1 st case 1. The thickness of the portion of the 1 st case 1 where the 2 nd escape portion 12e is provided (the end portion side of the one long side surface of the 1 st case 1) is substantially smaller than that of the peripheral portion. The 2 nd escape portion 12e is configured to be able to avoid a tilting operation in which the projection 21b indicated by a two-dot chain line tilts in a direction substantially perpendicular to the 1 st regulating wall 11 w. In other words, a predetermined space is provided so as to prevent the projection 21b, which accompanies the tilting operation toward the opposite side of the 1 st limiting wall 11w, from contacting the inner wall of the recess 11 facing the projection 21b, and this space functions as the 2 nd escape portion 12 e.

According to this configuration, in the electrical connector CN of the embodiment, the 1 st housing 1 is provided with the pair of 1

st regulating walls

11w, 11w substantially perpendicular to the longitudinal direction of the recess 11 on one inner wall of the recess 11, and the 2 nd housing 2 is provided with the pair of projections 21b, and the pair of

projections

21b, 21b are respectively continuous with the pair of 1 st side walls and project from the surface of the one 2 nd side wall 22 w. Thereby, fitting between the connectors is guided so that the

projections

21b, 21b (side surfaces 21s of the projections) slide on the 1

st regulating walls

11w, 11 w. In addition, the recess 11 of the 1 st case is provided with a 1 st escape portion 11e corresponding to the 1 st side wall 21w of the 2 nd case 2 in an inclined state and a 2 nd escape portion 12e corresponding to the projection 21b of the 2 nd case 2 in an inclined state. This can avoid damage to the docking connector 10 due to a prying operation when the 2 nd housing 2 is removed from the recess 11 in a state where the 2 nd housing 2 is introduced into the recess 11. Even when the housing is pulled out in accordance with such a prying operation, the

projections

21b and 21b (the side surfaces 21s of the projections) abut against the 1

st limiting walls

11w and 11w, so that the opposing positions of the fitting sides of the housings, that is, the opposing positions of the bottom of the recess 11 of the 1 st housing 1 and the plane of the connection end of the 2 nd housing 2 are easily held, and are unlikely to be displaced, thereby preventing an excessive prying operation.

(Structure of the 1 st case)

Next, the structure of the 1 st case 1 of the embodiment will be described with reference to fig. 1, 3 to 5A, and 5B. The 1 st case 1 has a pair of 2

nd restricting walls

12w, 13 w. The pair of 2

nd limiting walls

12w, 13w are formed along the longitudinal direction of the recess 11. One 2 nd limiting wall 12w has a pair of 2

nd receding portions

12e, 12e at both ends thereof. The 2 nd limiting wall 12w is formed inside the wall forming the outer wall of the 1 st case 1 with the support portion 12s and the space 12a between the support portions. Thus, the 2 nd restricting wall 12w functions as a buffer material that does not directly transmit the force of the prying operation when the receptacle connector 20 is pulled out from the base connector 10 to the wall constituting the outer wall of the 1 st housing 1. Therefore, it is also advantageous to alleviate the breakage of the 2 nd housing 2 side. That is, the frame portion 2f (or each side wall) of the 2 nd casing 2 can be prevented from being damaged.

Further, the one 2 nd limiting wall 12w is divided into three. For example, as shown in fig. 4A, the first and second wall regions are divided into wall regions 12w-1 and 12w-2 adjacent to the pair of 2

nd receding portions

12e and 12e, respectively, and a wall region 12w-3 including a lock mechanism. The wall regions 12w-1, 12w-2 are slightly narrowed in the opposing distance from the other 2 nd limiting wall 13w as compared with the wall region 12w-3 (refer to fig. 4B). This is advantageous in that the positioning accuracy at the time of fitting the connectors is improved, the operation margin for locking and unlocking is secured, and the excessive prying operation at the time of removing the receptacle connector 20 is prevented.

The other 2 nd limiting wall 13w has a step portion 13d on the center side. The step portion 13d is formed lower than the one 2 nd regulating wall 12w, and is continuous with the end portion side of the 2 nd regulating wall 13w via a chamfered inclined surface 13 s. Thus, as shown in fig. 2, when the 2 nd casing 2 is pulled out from the recess 11 in a state where the 2 nd casing 2 is tilted in the arrow X direction from a state where the 2 nd casing 2 is introduced into the recess 11, damage to the other 2 nd limiting wall 13w can be avoided.

Referring to fig. 1, 4A, and 4B, the 1 st case 1 has a suction region 11v on the bottom surface of the recess 11. The suction area 11v is configured to be capable of being sucked by a suction pad of an automatic mounting machine, not shown. The suction region 11v includes a notch 11k of the other 2 nd limiting wall 13 w. The notch 11k has a bottom surface continuous with the bottom surface of the recess 11 at the central portion of the other 2 nd limiting wall 13 w. A suction pad (not shown) provided in the automatic mounting machine is brought into contact with the suction area 11v, and the base connector 10 is moved to a predetermined position of the printed board 9p to be mounted by sucking the bottom surface of the recess 11 of the 1 st housing 1.

Further, the 1 st housing 1 has a set of locking

levers

12r, 12r on one inner wall of the recess 11. These lock levers 12r and 12r are configured to rise from the bottom surface of the recess 11 and to be elastically supported. A lock claw 12n protruding toward the center of the recess 11 is provided at the distal end portion of the lock lever 12 r.

The lock claw 12n is configured to be capable of being locked by the elasticity of the elastically supported lock lever 12r with or released from a plurality of locking projections 22b provided on the surface of one 2 nd side wall 22w of the 2 nd housing 2.

Referring to fig. 1 to 3, when the receptacle connector 20 is moved toward the base connector 10, the locking projections 22b ride over the locking claws 12n of the locking lever 12r, and then the locking claws 12n elastically return to be able to be locked with the locking projections 22 b. That is, the receptacle connector 20 can be locked with respect to the base connector 10. The locking can be released by pulling the receptacle connector 20 out of the base connector 10 with a strong force of the locking projection 22b passing over the locking claw 12n of the locking lever 12 r. According to the configuration of the inclined surface 13s, the step portion 13d, and the notch portion 11k on the 2 nd regulating wall 13w side, the height of the wall of the recess 11 is lower than that of the 2 nd regulating wall 12w, and therefore, the movement at least in the direction (the direction of the arrow X in fig. 2) in which the lock is easily released is facilitated.

Referring to fig. 1 to 5A and 5B, a docking connector 10 according to the embodiment discloses a connector in which the number of poles of the 1 st contact 3 is 25. For example, if the receptacle connector 20 is constituted by a 26-pole connector, the pair of

projections

21b and 21b are positioned differently from the 25-pole connector, and therefore fitting between the connectors is prevented by the pair of first restricting

walls

11w and 11 w. This can prevent erroneous connection between the base connector 10 and the receptacle connector 20.

Further, for example, if the receptacle connector 20 is formed of a 24-pole connector, the pair of

projections

21b and 21b are prevented from entering by the opposing walls opposing the pair of 1

st restricting walls

11w and 11w, and therefore, erroneous connection between the base connector 10 and the receptacle connector 20 can be prevented. Thus, the pair of

projections

21b, 21b constitute a wrong insertion prevention key for preventing the mating between connectors of different poles.

(Structure of the 2 nd case)

Next, the structure of the 2 nd housing 2 according to the embodiment will be described with reference to fig. 5B and 6. The 2 nd housing 2 has a 1 st groove (not shown) and a 2 nd groove 22. The 1 st groove, not shown, is recessed from the bottom surface of the 2 nd housing 2. The 2 nd contact 4 can be accommodated in the 1 st groove, not shown.

The 2 nd groove 22 communicates with the 1 st groove not shown. The terminal end of the insulated and coated electric wire W can be introduced into the 2 nd groove 22 from the outer circumferential direction (see fig. 1 to 3). The 2 nd groove 22 is formed in an omega shape with the opening side narrowed so that the wire W is hardly detached from the 2 nd housing 2.

When the terminal end of the electric wire W is introduced into the 2 nd groove 22 from the outer peripheral direction thereof, the electric wire W can be fixed to the 2 nd housing 2, and the 2 nd contact 4 and the core Wc of the electric wire W can be electrically connected.

(Structure of the 1 st contact)

Next, the structure of the 1 st contact 3 according to the embodiment will be described with reference to fig. 1 to 4A and 4B or fig. 5A and 5B. The 1 st contact 3 is formed in a desired needle shape by press working a conductive metal plate. The 1 st contact 3 is preferably made of, for example, a copper alloy in consideration of easiness of processing, spring characteristics, conductivity, and the like, but is not limited to the copper alloy.

The 1 st contact 3 has a lead terminal 3r and a connection terminal 3c provided at both ends. The lead terminal 3r is continuous with the connection terminal 3 c. The base connector 10 can be mounted on the printed board 9p by soldering and bonding the lead terminals 3r to a pattern (not shown) on the surface of the printed board 9 p.

The 1 st contact 3 is bent substantially at a right angle to mount the lead terminal 3r on the surface of the printed board 9p with respect to the connection terminal 3 c. The connection terminal 3c protrudes from the bottom surface of the recess 11. The 1 st contact 3 can be fixed to the 1 st housing 1 by pushing the connection terminal 3c from the bottom side of the 1 st housing 1. The 1 st contact 3 can also be fixed to the 1 st housing 1 by integrally molding a part of the 1 st contact 3 with the 1 st housing 1.

(Structure of the 2 nd contact)

Next, the structure of the 2 nd contact 4 according to the embodiment will be described with reference to fig. 6. The 2 nd contact 4 is formed in a desired shape by press working a conductive metal plate. The 2 nd contact 4 is preferably made of, for example, a copper alloy in consideration of easiness of processing, spring characteristics, conductivity, and the like, but is not limited to the copper alloy.

The 2 nd contact 4 includes a wire connecting portion 4a and a connecting portion 4 b. The wire connecting portion 4a is configured to be able to connect the terminal end of the electric wire W by pressure contact connection. The connection portion 4B can be connected to a connection terminal 3c of the 1 st contact 3 shown in fig. 4B, for example.

The wire connecting portion 4a has a 1 st fixing plate 41 in a band shape and a set of crimping

pieces

41a, 41 b. The 1 st fixing plate 41 can mount the terminal end of the electric wire W connected by the crimping

pieces

41a, 41b on one surface thereof. One crimping piece 41a is configured to be bent at substantially right angles from the distal end portion of the 1 st fixing plate 41. The other crimping piece 41b is configured to stand in a U-folded state from the middle portion of the 1 st fixing plate 41. The pair of crimping

pieces

41a and 41b each have a notch groove 41d in which a part is missing toward one surface of the 1 st fixing plate 41, and the core wire of the electric wire W is guided into the notch groove 41 from the outer circumferential direction, whereby the wire connection can be performed.

The connecting portion 4b has a band-shaped 2 nd fixing plate 42 and an elastic piece 43. One surface of the 2 nd fixing plate 42 is in close contact with the other surface of the 1 st fixing plate 41, and extends continuously as an elastic piece 43 from the vicinity of one crimping piece 41 a.

The elastic piece 43 is configured to be turned over from the distal end portion of the 2 nd fixing plate 42 toward the other surface of the 2 nd fixing plate 42, and is inclined such that the distal end portion of the elastic piece 43 is closer to the other surface of the 2 nd fixing plate 42 toward the proximal end portion of the 2 nd fixing plate 42.

The elastic piece 43 has a contact point portion 43s at a distal end portion. The contact portion 43s is configured to provide a predetermined gap between the other surface of the 2 nd fixing plate 42 and the elastic piece 43. The connection terminal 3c of the 1 st contact 3 can be inserted from between the base end portion of the 2 nd fixing plate 42 and the tip end portion of the elastic piece 43 toward the base end portion of the elastic piece 43.

The 2 nd contact 4 is held in the 1 st slot, not shown, of the 2 nd housing 2. When the terminal end of the electric wire W is introduced into the 2 nd groove 22 from the outer circumferential direction thereof, the pair of crimping

pieces

41a, 41b peel off the coating of the electric wire W, and can be electrically connected to the core Wc of the electric wire W.

[ function of electric connector ]

Next, the operation and effect of the electrical connector CN according to the embodiment will be described.

Referring to fig. 1 to 6, in the electrical connector CN according to the embodiment, a pair of 1

st restricting walls

11w, 11w substantially perpendicular to the longitudinal direction of the recess 11 are provided on one inner wall of the recess 11 in the 1 st housing 1, and a pair of

projections

21b, 21b continuous with the pair of 1 st side walls and projecting from the surface of one 2 nd side wall 22w are provided on the 2 nd housing 2. Thereby, fitting between the connectors is guided so that the

protrusions

21b, 21b (the side surfaces 21s of the protrusions) slide on the 1

st regulating walls

11w, 11 w. In addition, in the recess 11 of the 1 st case, the 1 st escape portion 11e for the 1 st side wall 21w of the 2 nd case 2 in the inclined state and the 2 nd escape portion 12e for the projection 21b of the 2 nd case 2 in the inclined state are provided. Thus, when the 2 nd housing 2 is pulled out from the recess 11 in a state where the 2 nd housing 2 is introduced into the recess 11, damage to the dock connector 10 can be avoided even if the 2 nd housing 2 tilts in the Y1 direction or the Y2 direction (see fig. 1 or 2). In other words, damage to the docking connector 10 due to the prying operation can be avoided. Even when the housing is pulled out with such a prying operation, the

projections

21b and 21b (the side surfaces 21s of the projections) abut against the 1

st regulating walls

11w and 11w, so that the opposing positions of the fitting sides of the housings, that is, the opposing positions of the bottom of the recess 11 of the 1 st housing 1 and the plane of the connection end of the 2 nd housing 2 are easily held, and are unlikely to shift, and an excessive prying operation can be prevented.

Referring to fig. 1 to 5A and 5B, the 1 st case 1 includes a pair of 2

nd restricting walls

12w and 13w formed along the longitudinal direction of the recess 11. The 2 nd limiting wall 12w is formed on the inner side of the wall forming the outer wall of the 1 st case 1 with the supporting portion 12s and the space 12a between the supporting portions. This protects the wall constituting the outer wall of the 1 st housing 1 against prying operation when the receptacle connector 20 is pulled out from the base connector 10. Further, the wall regions 12w-1, 12w-2 at both ends in the longitudinal direction of the recess 11 are configured to slightly narrow the opposing distance with the other 2 nd limiting wall 13w as compared with the wall region 12w-3 including the lock mechanism therebetween. This is advantageous in that positioning accuracy at the time of fitting between the connectors is improved, a margin for locking and unlocking is secured, and excessive prying operation at the time of removing the receptacle connector 20 is prevented.

On the other hand, in the 2 nd regulating wall 13w, a step portion 13d is formed by the inclined surface 13s at the center side in the longitudinal direction of the recess 11. Thus, as shown in fig. 2, when the 2 nd casing 2 is pulled out from the recess 11 in a state in which the 2 nd casing 2 is tilted in the arrow X direction from a state in which the 2 nd casing 2 is introduced into the recess 11, damage to the 2 nd regulating wall 13w can be avoided.

Further, a suction region 11v including a notch 11k of the 2 nd regulating wall 13w is provided on the bottom surface of the recess 11 of the 1 st case 1. A suction pad of an automatic mounting machine, not shown, can suck the suction area 11 v. This enables the docking connector 10 to be transferred by a suction pad (not shown) provided in the automatic mounting machine.

Thus, according to the configuration of the present invention, it is possible to provide an electrical connector which can avoid damage of the 1 st connector due to a prying action when the 1 st connector (base connector) is pulled out from the 2 nd connector (receptacle connector).

In the electrical connector of the present invention, the upper connector capable of coupling the 2 nd connector and the 1 st connector by moving the 2 nd connector in the vertical direction with respect to the printed board on which the 1 st connector is mounted is disclosed in the embodiment, but the electrical connector of the present invention may be applied to a side connector capable of coupling the 2 nd connector and the 1 st connector by moving the 2 nd connector in the horizontal direction with respect to the printed board on which the 1 st connector is mounted.

Claims

1. An electrical connector comprising a pair of a rectangular 1 st connector and a rectangular 2 nd connector, wherein the 2 nd connector is detachable from the 1 st connector,

the 1 st connector comprises a 1 st housing having a recess with a rectangular opening on one surface,

the 2 nd connector includes a 2 nd housing having a rectangular frame portion that can be introduced into the recess,

the 1 st case has a pair of 1 st restricting walls perpendicular to a longitudinal direction of the recess on one inner wall of the recess,

the 2 nd housing has:

a pair of 1 st side walls perpendicular to a longitudinal direction of the frame portion;

a pair of 2 nd side walls along a longitudinal direction of the frame portion; and

a pair of protrusions protruding from a surface of one of the 2 nd side walls,

the projection is formed on the bottom side of the frame part and is continuous with the 1 st side wall, and the projection is provided with a side surface which is limited by the 1 st limiting wall and is led into the recess,

a relief portion that prevents the 2 nd housing from coming into contact with an inner wall of the recess when tilted in a direction perpendicular to the 1 st limiting wall is provided in the recess,

the retraction unit includes:

a 1 st escape portion for tilting the 1 st side wall in a direction perpendicular to the 1 st regulating wall, the 1 st escape portion being formed at both longitudinal ends of the recess; and

a 2 nd escape part formed on one inner wall of the recess perpendicular to a longitudinal direction of the recess, for tilting action of the projection in a direction perpendicular to the 1 st regulating wall,

damage to the 1 st connector can be avoided when the frame portion is pulled out from the recess in a state in which the frame portion is introduced into the recess.

2. The electrical connector of claim 1,

the 1 st housing has a pair of 2 nd restricting walls formed along a longitudinal direction of the recess, surrounding the recess and restricting fitting of the pair of 2 nd side walls,

one of the 2 nd limiting walls has a pair of the 2 nd receding portions at both end portions,

the other of the 2 nd limiting walls has a step portion formed lower than the one of the 2 nd limiting walls at a center side,

the step portion is continuous with an end portion of the other of the 2 nd limiting walls via an inverted inclined surface.

3. The electrical connector of claim 2,

the 1 st housing has an adsorption area on the bottom surface of the concave part for adsorbing an adsorption pad of an automatic mounting machine,

the suction region includes a cutout portion of the 2 nd limiting wall, and the cutout portion forms a bottom surface continuous with a bottom surface of the recess portion at a central portion of the other 2 nd limiting wall.

4. The electrical connector of any one of claims 1 to 3,

the 1 st connector is constituted by a base connector capable of being mounted on a printed board,

the 2 nd connector is constituted by a receptacle connector capable of connecting terminals of a plurality of electric wires,

the 1 st housing has a plurality of needle-like 1 st contacts fixed to the 1 st housing, the 1 st contacts being provided at both ends with connection terminals protruding from a bottom surface of the recess and lead terminals solderable to a surface of the printed board,

the 2 nd housing has a plurality of wave-shaped 2 nd contacts arranged inside the 2 nd housing, the 2 nd contacts have wire connection portions connected to the electric wires, and connection portions of the 2 nd contacts continuous with the wire connection portions are connectable to the 1 st contacts.