JP3316116B2 - Electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector having a double lock member for locking a contact housed in a contact housing of an insulating housing.

[0002]

2. Description of the Related Art Conventionally, an insulating housing having a plurality of contact accommodating chambers for accommodating contacts from a predetermined accommodating direction, and a contact insertion hole corresponding to each of the contact accommodating chambers, are provided substantially orthogonal to the accommodating direction. 2. Description of the Related Art There is known an electrical connector including a plate-shaped double lock member attached to an insulating housing from a direction in which the electrical connector is mounted. In this electrical connector, the double lock member is temporarily locked at the temporary locking position of the insulating housing to align the contact insertion hole with the contact storage chamber, and in this state, the contact is inserted toward the contact storage chamber, and thereafter, Then, the double lock member is moved to the full locking position to perform the full locking. Thereby, the contact is locked by the locking portion in the contact accommodating chamber and also locked by the double lock member.
The heavy locking ensures that the contact is securely removed.

[0003] In such an electrical connector, a contact insertion operation of inserting a contact toward a contact accommodating chamber in a state where a double lock member is temporarily locked in a temporary locking position is usually performed by a contact insertion machine. It is done automatically. This contact insertion work, as described above,
This is performed in a state where the contact insertion hole of the double lock member and the contact accommodating chamber of the insulating housing are accurately aligned.

[0004]

However, the insulating housing and the double lock member are generally made of resin manufactured by injection molding, and there may be an error in their dimensions. There is a case that rattling occurs in the state of being temporarily locked. As described above, if the double lock member rattles, the contact insertion hole and the contact storage chamber cannot be accurately aligned, and the contact collides with the double lock member when the contact is inserted into the contact storage chamber by the contact insertion machine. The contact insertion machine may stop and the contact insertion operation may be interrupted. In particular, in a multi-pole electrical connector having a large number of contacts, the size of the insulating housing and the double lock member is large, so that the dimensional error is also large. Therefore, the contact insertion hole of the double lock member and the contact accommodating chamber of the insulating housing are accurately positioned. In some cases, positioning cannot be performed. In addition, when the size of the contact is increased, a highly reliable locking mechanism for securely locking and preventing the enlarged contact from occurring is desired.

The present invention has been made in view of the above circumstances, and provides an electrical connector capable of performing a contact inserting operation smoothly by reducing rattling of a double lock member and further reliably preventing the contact even if the contact becomes large. With the goal.

[0006]

In order to achieve the above object, an electric connector according to the present invention comprises a plurality of contacts in each of which two types of contacts, a power contact and a signal contact, are accommodated from a predetermined accommodation direction. an insulating housing having a locking lance for locking the contacts accommodated in the contact accommodating chamber and the contact receiving chamber, the locking position from the partial locking position in the direction of movement perpendicular to the accommodation direction within the insulating housing And a double lock member that locks the contact housed in the contact housing chamber, the double lock member extending along a plane orthogonal to the housing direction, and A plate-like base having a contact insertion hole into which each of the above two types of contacts is inserted, and a plate orthogonal to the plate-like base. The locking lance for preventing the power supply contact from being bent in a direction extending in the same direction is prevented from being bent , and is disposed inside the insulating housing.
And a plate-like portion to be location, (2) the insulating housing, the plate portion has a guide portion for guiding across the cross direction orthogonal to both the housing direction and the moving direction, ( 3) When the double lock member is located at the temporary locking position, engagement of the plate portion and the guide portion prevents rattling of the double lock member within the insulating housing. It is assumed that.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an electric connector according to the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing the electric connector, and FIG. 2 is a sectional view showing the electric connector. The electrical connector 10 includes a contact accommodating chamber 22 for accommodating the female contacts 12 for signals and a contact accommodating chamber 29 for accommodating the female contacts (not shown) for power supply in the housing direction indicated by the arrow 11 (see FIG. 3). And a lance housing (an example of an insulating housing according to the present invention) 4 received by lance housing receiving portions 24 and 26 formed in the female housing 20.
0, a double lock member 60 for locking the female contact 12 accommodated in the contact accommodating chamber 22, and a cam slide 80 for engaging both the female housing 20 and the male housing 14 with a weak operating force. ing. further,
The electrical connector 10 is provided between the lance housing 40 and the female housing 20 in the lance housing receiving portion 26 and is provided with a waterproof member 100 for preventing water from entering the inside.
And a wire cover 110 for bundling and protecting the wires 16 connected to the female contacts 12 for signals and the female contacts for power. A waterproof rubber plug 18 is wound around the wire 16. In FIG. 2, the wire cover 110 is omitted.

As shown in FIG. 2, the engaging recess 28 of the female housing 20 and the engaging projection 42 of the lance housing 40 engage to engage the lance housing 40 with the female housing 20.
Is fixed. Further, the female contact 12 is locked by the locking portion 44 of the lance housing 40 and also locked by the double lock member 60, and is reliably prevented from falling off by the double locking.

Next, the female housing will be described with reference to FIGS. As described above, the female housing 20 is provided with the signal contact housing chamber 22 and the power contact housing chamber 29 in which a power contact (not shown) is housed. Also, female housing 2
0, upper and lower walls 30a, 3 of the female housing 20.
Arm receiving portion 3 for receiving the two arms 82a and 82b of the cam slide 80 (see FIG. 1) inside the inside of the arm receiving portion 3b.
2a and 32b are formed. Furthermore, at the longitudinal ends of the upper and lower walls 30a, 30b of the female housing 20,
The check notch 34 is formed to receive the check protrusion 84 (see FIG. 1) of the cam slide 80. Cam slide 8
When the connector 0 is completely inserted into the female housing 20, the confirmation notch 34 completely receives the confirmation protrusion 84, so that even when the electrical connector 10 is not visible.
It can be determined by groping that the cam slide 80 has been completely inserted into the female housing 20. Further, the female housing 20 is formed with a fixing projection 36 that fits into the locking hole 112 of the wire-cover 110 (see FIG. 1) and fixes the wire-cover 110 to the female housing 20.

As described above, the female housing 20 has the engaging projections 42 of the lance housing 40 (see FIG. 2).
Is formed with an engagement concave portion 28 which engages with the groove. A die hole 31 for forming the engagement recess 28 is formed in the upper wall 30a of the female housing 20 (a similar hole 31 'is also formed in the lower wall 30b). Conventionally, when there is no space for forming a large locking arm, for example, a mold is inserted from the side of the female mold housing, and the locking arm is formed integrally with the frame 33. However, in such a method, a seam of the mold is formed on the outer surface of the frame portion 33. The outer surface of the frame portion 33 is a waterproof surface, and if a seam of a mold is formed on the outer surface, the waterproof characteristic deteriorates. In order to prevent such deterioration of the waterproof property, a hole 31 is formed, a jig of a mold is inserted through the hole 31, an engagement recess 28 is formed on the outer surface of the frame 33, and a lance housing is formed. At 40, an arm that engages with the engagement recess 28 is formed.

Next, the lance housing will be described with reference to FIGS. As described above, the lance housing 40 is received by the lance housing receiving portions 24 and 26 of the female housing 20, and the engagement recess 28 of the female housing 20 and the engagement protrusion 42 of the lance housing 40 are formed. It engages and is fixed to the female housing 20.
In the lance housing 40, similarly to the female housing 20, a contact accommodating chamber 46 for accommodating a signal contact and a contact accommodating chamber 48 for accommodating a power contact are formed. Reference numerals 46 and 48 are aligned with the contact accommodating chambers 22 and 28 of the female housing 20, respectively. A checker pin hole 47 is formed below each of the contact accommodating chambers 46. The checker pin (not shown) is inserted into the checker pin hole 47 to thereby form the female contact 1.
2 (see FIG. 2) and the wires 16 (see FIG. 2) connected to the female contacts 12 can be confirmed whether or not the female contacts 12 are completely inserted. You can also confirm whether or not. Contact accommodation room 4
8, a locking lance 49 for locking a large power supply contact housed in the contact housing chamber 48 is formed. As described later, the locking lance 49 locks the power supply contact. Then, the bending of the locking lance 49 is prevented by the plate-shaped portion 68, and the power supply contact is securely locked and prevented from falling off.

The lance housing 40 has guide portions 50 and 5 for guiding the double lock member 60 shown in FIG.
2 are formed, and the guide section 52 is an example of the guide section according to the present invention. The guide portion 50 is formed in the contact insertion hole 6 of the double lock member 60 into which the contact 12 is inserted.
2 guides the contact plate portion 64 on which the contact plate 2 is formed. On the other hand, the guide portion 52 is a plate-like portion of the double lock member 60 that extends in both the housing direction (the direction indicated by the arrow 11) shown in FIG. 1 and the moving direction of the double lock member 60 (the direction indicated by the arrow 66) (the present invention). The guide 68 guides the plate-shaped portion 68 in an intersecting direction (direction indicated by an arrow 67) orthogonal to both the housing direction and the moving direction. As described later in the description of the double lock member, the plate-like portion 68 is still sandwiched between the guide portions 52 even at the temporary lock position of the double lock member 60, so that the double lock member 60 is temporarily held at the temporary lock position. The rattling in the crossing direction (the direction indicated by the arrow 67) in the locked state can be reduced. Further, in the lance housing 40, a pair of locking arms 54 for locking the double lock member 60 at the locking position is formed near the entrance of the guide portion 52.

Next, the double lock member will be described with reference to FIGS. The double lock member 60 has a contact insertion hole 62 into which the contact 12 (see FIG. 2) is inserted.
A contact plate-shaped portion (plate-shaped base portion ) 64 having a flat plate portion and a plate-shaped portion (a plate- shaped portion ( direction indicated by an arrow 66)) that spreads in both the housing direction (direction indicated by an arrow 11) and the moving direction of a double lock member 60 (direction indicated by an arrow 66) shown in FIG. An example of the plate-shaped portion according to the present invention) 68 is provided. The contact plate portion 64 and the plate portion 68 are orthogonal to each other, and as described above, the contact plate portion 64 is guided by the guide portion 50 (see FIG. 8) of the lance housing 40, while the plate portion is 68 is guided by the guide section 52. When the plate portion 68 is guided by the guide portion 52, the plate portion 68
Is guided in the direction of its thickness. Since the thickness of the plate portion 68 is smaller than the length of the contact plate portion 64 in the cross direction, the plate portion 68 at the time of manufacturing the double lock member is formed.
Is much smaller than the dimensional error of the length of the contact plate portion 64 in the cross direction (the direction indicated by the arrow 67). If there is no plate 68, the contact plate 6
4 may rattle in the cross direction due to a dimensional error. When the contact plate-shaped portion 64 rattles in this manner, the contact insertion hole 62 and the contact accommodating chamber 22 (see FIG. 2) cannot be accurately positioned. When inserting the female contact 12 (see FIG. 2) into the contact accommodating chamber 22 with a contact insertion machine (not shown),
Collides with the double lock member 60, the contact insertion machine stops, and the contact insertion operation may be interrupted.
However, in addition to the contact plate portion 64, a plate portion 68 orthogonal to the contact plate portion 64 is formed on the double lock member 60. As described above, the plate portion 6
8 is much smaller than the dimensional error of the contact plate portion 64, and
8, the double lock member 60 is prevented from rattling, and the female contact 12 (see FIG. 2) is smoothly inserted into the contact accommodating chamber 22. Can be inserted into

The plate-like portion 68 is provided with a projection 70 for fully locking the double lock member 60 at the full locking position. The double lock member 60 is fully locked at the fully locked position by being locked to the locking arm 54 (see FIG. 6). Further, two recesses 72 extending in the housing direction (the direction indicated by the arrow 11) are formed on the front and back surfaces of the plate portion 68, respectively. These recesses 72 are located at locations for receiving the locking lances 49 (see FIG. 6) of the lance housing 40 (see FIG. 1) when the double lock member 60 is locked in the temporary locking position. Lance housing 40
The locking lance 49 is deflected when the double-lock member 60 is locked in the female contactor bets are inserted at the partial locking position to completely insert the female contactor bets. Female contact
When the double lock member 60 is moved and locked in the final locking position after the lock is completely inserted, the concave portion 72 and the locking lance 49 are displaced from each other, and the locking lance 49 does not bend.
As a result, fully inserted female contactors bets is retained is engaged with the locking lance 49. Also, the plate-shaped portion 68
The fitting preventing portion 74 which extends perpendicularly to the plate portion 68
Is formed to prevent the male housing 14 (see FIG. 2) and the female housing 20 (see FIG. 2) from fitting when the double lock member 60 is not locked in the final locking position. .

Next, the cam slide will be described with reference to FIGS. The cam slide 80 includes two plate-like arms 82a and 82b. Each arm 82
a, 82b, the male housing 1
4 (see FIG. 2), cam grooves 86a, 88 with which four cam followers (not shown) formed on the inner surface respectively engage.
a, 86b and 88b are formed. The cam groove 86a,
A temporary locking projection 90 for preventing the male housing 14 (see FIG. 2) from coming off is formed on the inlet side portion of 86b. A locking arm 92 is formed at the center of the long piece on the wire cover 110 side of the long pieces of the arms 82a and 82b so as to extend in the direction in which the cam slide 80 is extracted (the direction indicated by the arrow 94). A distal end surface 92 a orthogonal to the direction in which the cam slide 80 is extracted is formed at the distal end of the locking arm 92. This tip surface 9
2a is fitted into the temporary locking hole 38 of the female housing 20 when the cam slide 80 is at its temporary locking position, and prevents the cam slide 80 from falling out of the female housing 20. On the other hand, when the cam slide 80 is in its final locking position, the distal end surface 92a fits into the final locking hole 39 of the female housing 20 to prevent the cam slide 80 from moving from the final locking position. .

[0016]

As described above, according to the electrical connector of the present invention, since the plate-shaped portion of the double lock member is sandwiched between the guide portions of the insulating housing from the thickness direction, the rattle of the double lock member is obtained. And the female contact can be smoothly inserted into the contact accommodating chamber. In addition, since the plate-like portion also has a function of preventing the locking lance that locks the contact from bending, the contact can be reliably prevented from coming off even if the contact becomes large.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an electric connector of the present invention.

FIG. 2 is a sectional view showing the electrical connector of FIG. 1;

FIG. 3 shows a female housing, (a) is a front view,
(B) is a bottom view and (c) is a side view.

FIG. 4 is a rear view showing the female housing of FIG. 3;

5A is a cross-sectional view taken along line AA of FIG. 3, and FIG. 5B is a cross-sectional view taken along line BB of FIG.

6A is a front view showing a lance housing, FIG.
(B) is a side view, and (c) is a bottom view.

FIG. 7 is a rear view showing the lance housing of FIG. 6;

8A is a sectional view taken along the line CC of FIG. 6, and FIG. 8B is a sectional view taken along the line DD of FIG.

FIG. 9 shows a double lock member, (a) is a front view,
(B) is a side view.

FIG. 10 is a plan view showing the double lock member of FIG. 9;

FIG. 11 is a front view showing a cam slide.

FIG. 12 is a sectional view showing the cam slide of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Electrical connector 11 Housing direction 12 Female contact 22 Contact housing room 40 Lance housing 46 Contact housing room 52 Guide part 60 Double lock member 66 Moving direction 67 Cross direction 68 Plate-shaped part

Claims (1)

(57) [Claims] 1. A plurality of contact accommodation chambers for accommodating two types of contacts, a power supply contact and a signal contact, respectively, from a predetermined accommodation direction, and a member for locking the contacts accommodated in the contact accommodation chamber. an insulating housing having a lance, moved from the temporary locking position in the direction of movement perpendicular to the accommodating direction within the insulating housing to the full locking position, the <br/> contacts accommodated in the contact accommodating chamber An electrical connector including a double lock member for locking, wherein the double lock member extends along a surface orthogonal to the housing direction and has a contact insertion hole into which each of the two types of contacts is inserted. A plate-like base,
The plate-shaped portion, which extends in a direction perpendicular to the plate-shaped base and prevents the locking lance from locking the power supply contact, and is disposed inside the insulating housing. The insulating housing has a guide portion that guides the plate-shaped portion by sandwiching the plate-shaped portion from a cross direction orthogonal to both the housing direction and the movement direction, and the double lock member is in the temporary locking position. Wherein the engagement between the plate portion and the guide portion prevents rattling of the double lock member in the insulating housing.