JP3643327B2 - connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector, and more particularly to an improvement of a connector having a locking portion for locking a contact.
[0002]
[Prior art]
8 is a front view of a conventional connector, FIG. 9 is a sectional view taken along line IX-IX in FIG. 8, FIG. 10 is an enlarged perspective view of a housing lance, and FIG. 11 is a perspective view of a contact.
[0003]
The connector 201 includes a connector housing 210, a contact housing chamber 220 provided in the connector housing 210, and a housing lance 230 provided in the connector housing 210 and locking the contact 250 inserted into the contact housing chamber 220. Yes.
[0004]
The contact accommodating chamber 220 extends in the front-rear direction (left-right direction in FIG. 9) of the connector housing 210.
[0005]
The housing lance 230 extends toward the front of the connector housing 210 (leftward in FIG. 9) and faces the contact accommodating chamber 220.
[0006]
As shown in FIG. 11, the contact 250 includes a contact part 251, a notch part 252, a crimping part 253, and a pressing part 254.
[0007]
The contact 250 is formed by bending a thin metal plate.
[0008]
The contact portion 251 is formed in a cylindrical shape having a square cross section composed of an upper plate portion 251a, a lower plate portion 251b, and two side plate portions 251c, and a contact portion (not shown) that contacts a mating contact (not shown) is the cylinder. It is formed in the shape.
[0009]
A cutout portion 252 that abuts against the locking surface 231 of the housing lance 230 is formed at an end portion of the upper plate portion 251 a of the contact portion 251.
[0010]
The side plate portion 251 c of the contact portion 251 functions as a guide when the contact 250 is inserted into the contact accommodating chamber 220.
[0011]
The crimping portion 253 holds the core wire 206 of the cable 205.
[0012]
The holding portion 254 holds the core wire cover 207 of the cable 205.
[0013]
Next, the insertion of the contact 250 into the connector housing 210 will be described.
[0014]
When the contact 250 is inserted from the rear opening 212 of the connector housing 210 into the contact accommodating chamber 220 using the side plate portion 251c as a guide, the housing lance 230 is bent upward by the upper plate portion 251a of the contact portion 251.
[0015]
When the contact 250 is inserted to the proper position, the housing lance 230 returns to the original position, and the notch 252 of the contact 250 is locked to the locking surface 231a of the housing lance 230.
[0016]
As a result, the contact 250 is held in the contact accommodating chamber 220 by the housing lance 230, and the contact 250 cannot be pulled out from the rear opening 212.
[0017]
[Problems to be solved by the invention]
Incidentally, the contact holding force of the housing lance 230 (rigidity) is when the width of the housing lances 230 w, the height is h, you are substantially determined by the width w. That is, the contact holding force increases as the width w increases.
[0018]
However, the case where the height h as in the conventional example is constant, but Ru can increase the contact holding force by increasing the width w, high elastic force of the housing lance 230 in accordance with the width w is larger Therefore, there is a problem that a large insertion force is required when the contact 250 is inserted into the connector housing 210.
[0019]
The present invention has been made in view of such circumstances, and a problem thereof is to provide a connector that is excellent in contact insertability while ensuring a large contact holding force.
[0020]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention according to claim 1 is a connector housing, a contact housing chamber provided in the connector housing, and a contact provided in the connector housing and inserted into the contact housing chamber. In the connector provided with the locking portion, the locking portion has a flat plate portion and a projection portion, and extends from the rear portion of the connector housing toward the front portion, and the projection portion is positioned on the side opposite to the contact portion of the flat plate portion. In addition, the width of the cross section of the protrusion when the locking portion is cut in a direction orthogonal to the front-rear direction of the connector housing is smaller than the width of the cross section of the flat plate portion .
[0021]
The locking portion has a flat plate portion and a protruding portion, extends from the rear portion of the connector housing toward the front portion, and the protruding portion is located on the side opposite to the contact portion of the flat plate portion and is engaged in a direction perpendicular to the front-rear direction of the connector housing. Since the width of the cross section of the protrusion when the stop is cut is smaller than the width of the cross section of the flat plate, it is possible to increase the contact holding force of the locking portion and to increase the force when inserting the contact into the connector housing. Do not need.
[0022]
According to a second aspect of the present invention, there is provided a connector housing, a plurality of contact housing chambers provided in the connector housing, and a latch for locking a plurality of contacts provided in the connector housing and respectively inserted into the contact housing chambers. In the connector provided with a stop portion, the locking portion has a flat plate portion and a protruding portion, and extends from the rear portion of the connector housing toward the front portion, and the protruding portion is located on the side opposite to the contact portion of the flat plate portion. A width of the cross-section of the protrusion when the locking portion is cut in a direction orthogonal to the front-rear direction of the connector housing is smaller than a width of the cross-section of the flat plate portion , A hole for receiving a part of the locking portion when the locking portion is bent by insertion of a contact is provided.
[0023]
The locking portion has a flat plate portion and a protruding portion, extends from the rear portion of the connector housing toward the front portion, and the protruding portion is located on the side opposite to the contact portion of the flat plate portion and is engaged in a direction perpendicular to the front-rear direction of the connector housing. Since the width of the cross section of the protrusion when the stop is cut is smaller than the width of the cross section of the flat plate, it is possible to increase the contact holding force of the locking portion and to increase the force when inserting the contact into the connector housing. Do not need. Further, when the connector housing is provided with a plurality of contact housing chambers, the pitch between the contact housing chambers is such that the thickness of the locking portion, the bending space that absorbs the bending of the locking portion when the contact is inserted, Although it is determined by the thickness of the partition wall that separates the chambers and the height of the contact, a part of the locking portion is received when the locking portion is bent by insertion of the contact into the partition wall that partitions the contact accommodating chamber. Since the holes are provided, the pitch can be made smaller than the pitch between the conventional contact accommodating chambers by the thickness of the partition wall.
[0024]
The invention according to claim 3 is the connector according to claim 2, wherein the partition is provided with a deflection amount regulating portion for regulating the deflection amount of the locking portion when the contact is inserted. To do.
[0025]
Since a bending amount restricting portion that restricts the bending amount of the locking portion when the contact is inserted is provided in the partition wall, even if a large force is applied to bend the locking portion by a predetermined amount or more by pulling out the contact or the like. The excessive bending of the locking portion is regulated by the deflection amount regulating portion.
[0026]
According to a fourth aspect of the present invention, in the connector according to the second or third aspect of the present invention, the connector includes a closing member that is detachable from the contact housing chamber and can close the hole.
[0027]
Since it has a closing member that can be attached to and removed from the contact receiving chamber and can close the hole, the opening area of the front end surface of the connector housing can be reduced when the closing member is mounted in the contact receiving chamber, and the adjacent contact The gap can be blocked.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0029]
1 is a front view of a connector according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is an enlarged perspective view of a housing lance, and FIG. It is sectional drawing which follows an IV line.
[0030]
The connector housing 10 of the connector 1 includes a contact storage chamber 20 and a housing lance (locking portion) 30.
[0031]
The connector housing 10 is molded of resin, and a hole 11 for guiding a mating contact (not shown) to the contact storage chamber 20 is formed on a front end surface thereof, and a contact 250 is guided to the contact storage chamber 20 on a rear end surface thereof. A rear opening 12 is formed.
[0032]
Further, the connector housing 10 is provided with a lock lever 14 for releasing the lock state between the lock receiving portion (not shown) of the mating connector and the lock portion 13.
[0033]
The contact storage chamber 20 is formed so as to extend in the front-rear direction of the connector housing 10. A housing lance (locking portion) 30 is provided so as to face the contact storage chamber 20.
[0034]
The housing lance 30 has a cantilever structure extending from the rear part to the front part of the connector housing 10, and a tip end portion of the housing lance 30 can be elastically deformed in the vertical direction (direction indicated by the arrow A) of the connector housing 10. .
[0035]
The housing lance 30 includes a flat plate portion (a part of the locking portion) 31 located on the contact storage chamber 20 side and a projection portion (a part of the locking portion) 32 formed on the upper surface of the flat plate portion 31.
[0036]
As shown in FIG. 4, the width w1 of the cross section of the flat plate portion 31 is sufficiently larger than the width w2 of the cross section of the protrusion 32, and the area of the contact side region Z1 in the cross section of the housing lance 30 is larger than the area of the anti-contact side region Z2. large.
[0037]
The tip 32 a of the protrusion 32 extends forward (in the direction toward the front end of the connector housing 10) from the locking surface 31 a of the flat plate portion 31.
[0038]
The sum of the height of the flat plate portion 31 and the height of the protruding portion 32 is substantially the same as the height of the conventional housing lance 230.
[0039]
The locking surface 31 a of the flat plate portion 31 locks the notch portion 252 of the contact 250.
[0040]
The partition wall 21 that divides the contact accommodating chamber 20 adjacent in the vertical direction is provided with a hole 22 that receives the protrusion 32 when the housing lance 30 is bent upward by the insertion of the contact 250.
[0041]
Further, when the housing lance 30 is bent upward by the insertion of the contact 250, the partition wall 21 is provided with a deflection amount regulating portion 23 that abuts the flat plate portion 31 and regulates the deflection amount of the housing lance 30.
[0042]
Next, the insertion of the contact 250 into the connector housing 10 will be described.
[0043]
The contact 250 is inserted into the contact accommodating chamber 20 from the rear opening 12 of the connector housing 10.
[0044]
The contact 250 in the contact accommodating chamber 20 presses the housing lance 30 upward to bend the housing lance 30. At this time, the protrusion 32 of the housing lance 30 is received in the hole 22.
[0045]
When the contact 250 is inserted to the normal locking position, the housing lance 30 is returned to the original position by the elastic force, and the notch 252 of the contact 250 is locked to the locking surface 31a of the housing lance 30.
[0046]
As a result, the contact 250 is prevented from coming out of the connector housing 10.
[0047]
When the contact 250 is pulled out, a tool (not shown) is inserted from the front end surface of the connector housing 10 and the tip end portion 32a is lifted upward to release the locked state between the notch 252 of the contact 250 and the locking surface 31a of the housing lance 30. After that, the contact 250 may be pulled rearward of the connector housing 10.
[0048]
At this time, even if a large force is applied to bend the housing lance 30 by a predetermined amount or more, the upper surface 31b of the flat plate portion 31 comes into contact with the deflection amount regulating portion 23, and excessive deflection of the housing lance 30 is regulated.
[0049]
According to the first embodiment, the protrusion 32 is positioned on the side opposite to the contact surface of the flat plate portion 31, and the width of the cross section of the protrusion 32 is smaller than the width of the cross section of the flat plate portion 31. The force can be improved, and excellent insertability that does not require a large force when the contact 250 is inserted into the connector housing 10 can be obtained.
[0050]
In addition, when the housing lance 30 is bent, the protrusion 32 of the housing lance 30 is received in the hole 22 of the partition wall 21, so that the contact storage chamber has a thickness corresponding to the thickness of the partition wall 21 than the conventional pitch between the contact storage chambers 120. The pitch between 20 can be reduced, and the vertical dimension of the connector housing 10 can be reduced to reduce the size and thickness of the connector 1.
[0051]
Furthermore, even if a large force is applied to bend the housing lance 30 by a predetermined amount or more, excessive deformation of the housing lance 30 is restricted by the deflection amount restricting portion 23, so that plastic deformation of the housing lance 30 is prevented.
[0052]
5 is a front view of a connector according to a second embodiment of the present invention, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is an enlarged perspective view of a housing lance, common to the first embodiment. The same reference numerals are given to the parts to be described, and the description thereof is omitted.
[0053]
The connector 101 includes a connector housing 110, a contact storage chamber 120, a housing lance (locking portion) 30, and a resin retainer (closing member) 140.
[0054]
The connector housing 110 is molded of resin, and a hole 111 for guiding a mating contact (not shown) to the contact storage chamber 120 is formed on the front end surface thereof, and the contact 250 is guided to the contact storage chamber 120 on the rear end surface. A rear opening 112 is formed.
[0055]
The contact storage chamber 120 is formed to extend in the front-rear direction of the connector housing 110. A housing lance 30 is provided so as to face the contact storage chamber 120.
[0056]
A partition wall 121 that divides the contact housing chamber 120 adjacent in the vertical direction is provided with a hole 122 that receives the protrusion 32 when the housing lance 30 is bent upward by the insertion of the contact 250.
[0057]
In addition, the partition wall 121 is provided with a deflection amount regulating portion 123 that abuts the flat plate portion 31 to regulate the deflection amount of the housing lance 30 when the housing lance 30 is bent upward by the insertion of the contact 250.
[0058]
The retainer 140 has a cover part 141 that covers the front end surface of the connector housing 110 and an insertion projection part 142 that is orthogonal to the cover part 141. The retainer 140 is detachably attached to the connector housing 110, for example, via a lock part (not shown). Has been.
[0059]
A hole 143 for guiding a counterpart contact (not shown) to the contact storage chamber 120 is formed in the cover portion 141 so as to face the hole 111.
[0060]
The insertion protrusion 142 is provided with a closing plate 144 that is slightly narrower than the hole 122 and has substantially the same thickness as the hole 122. When the retainer 140 is mounted on the connector housing 110, the closing plate 144 closes the hole 122 by the front end portion 144 a coming into contact with the contact surface 110 a of the connector housing 110.
[0061]
Next, the insertion of the contact 250 into the connector housing 110 will be described.
[0062]
The contact 250 is inserted into the contact receiving chamber 120 from the rear opening 112 of the connector housing 110. At this time, since the contact 250 in the contact accommodating chamber 120 presses the housing lance 30 upward, the housing lance 30 is deformed.
[0063]
When the contact 250 is inserted to the normal locking position, the housing lance 30 is returned to the original position by the elastic force, and the notch 252 of the contact 250 is locked to the locking surface 31a of the housing lance 30.
[0064]
Thereafter, the retainer 140 is attached to the connector housing 110.
[0065]
When the insertion protrusion 142 of the retainer 140 is inserted into the contact accommodating chamber 120 by a predetermined amount, the distal end portion 144 a of the closing plate 144 of the retainer 140 contacts the contact surface 110 a of the connector housing 110.
[0066]
As a result, the opening area of the front end surface of the connector housing 110 is reduced by the cover portion 141, and the hole 122 provided in the partition wall 121 that partitions the adjacent contact housing chamber 120 is closed by the closing plate 144.
[0067]
According to the second embodiment, the same effects as those of the first embodiment can be obtained, and the opening area of the front end surface of the connector housing 110 is reduced by the cover portion 141 (retainer 140). And the hole 122 provided in the partition wall 121 that divides the adjacent contact storage chamber 120 is closed by the closing plate 144 (retainer 140). Withstand voltage performance between contacts is improved.
[0068]
When the contact 250 is in the half-inserted state, the housing lance 30 is in a bent state. Therefore, when the retainer 140 is inserted, the distal end portion 144a of the retainer 140 is brought into contact with the distal end portion 32a or the locking surface 31a of the housing lance 30. Since the retainer 140 cannot be inserted to the proper position because of the contact, it can be detected that the contact 250 is not inserted to the proper locking position.
[0069]
Moreover, in the said embodiment, although the cross section of the housing lance 30 was made into the shape shown in FIG. 4, if the width of the cross section of the projection part 32 is smaller than the width of the cross section of the flat plate part 31 , arbitrary shapes, such as L-shape, A cross-sectional shape may be sufficient.
[0070]
【The invention's effect】
As described above, according to the connector of the first aspect of the present invention, excellent contact insertability can be obtained while securing a large contact holding force.
[0071]
According to the connector of the second aspect of the present invention, excellent contact insertability can be obtained while ensuring a large contact holding force, and the vertical dimension of the connector housing (the bending direction of the locking portion) can be reduced. Thus, the connector can be reduced in size and thickness.
[0072]
According to the connector of the invention of claim 3, plastic deformation of the locking portion is prevented.
[0073]
According to the connector of the fourth aspect of the present invention, it is possible to prevent dust and the like from entering the contact housing chamber, and improve the withstand voltage performance between contacts inserted in adjacent contact housing chambers.
[Brief description of the drawings]
FIG. 1 is a front view of a connector according to a first embodiment of the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is an enlarged perspective view of a housing lance.
4 is a cross-sectional view taken along the line IV-IV in FIG. 2. FIG.
FIG. 5 is a front view of a connector according to a second embodiment of the present invention.
6 is a cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is an enlarged perspective view of a housing lance.
FIG. 8 is a front view of a conventional connector.
9 is a sectional view taken along line IX-IX in FIG.
FIG. 10 is an enlarged perspective view of a housing lance.
FIG. 11 is a perspective view of a contact.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,101 Connector 10,110 Connector housing 20,120 Contact accommodating chamber 21,121 Partition 22,122 Hole 23,123 Deflection amount regulation part 30 Housing lance (locking part)
140 Retainer (blocking member)
250 contacts

Claims (4)

A connector housing;
A contact accommodating chamber provided in the connector housing;
In the connector provided with the connector housing, and a locking part for locking the contact inserted into the contact accommodating chamber,
The locking portion has a flat plate portion and a protruding portion, and extends from the rear portion of the connector housing toward the front portion,
The protrusion is located on the side of the flat plate opposite to the contact surface,
The connector, wherein a width of a cross section of the protrusion when the locking portion is cut in a direction orthogonal to a front-rear direction of the connector housing is smaller than a width of a cross section of the flat plate portion . A connector housing;
A plurality of contact accommodating chambers provided in the connector housing;
In the connector provided with the connector housing, and a locking portion that locks the plurality of contacts inserted into the contact accommodating chambers,
The locking portion has a flat plate portion and a protruding portion, and extends from the rear portion of the connector housing toward the front portion,
The protrusion is located on the side of the flat plate opposite to the contact surface,
The width of the cross section of the projection when the locking portion is cut in a direction orthogonal to the front-rear direction of the connector housing is smaller than the width of the cross section of the flat plate portion,
A partition that partitions the contact accommodating chamber is provided with a hole that receives a part of the locking portion when the locking portion is bent by insertion of the contact.   The connector according to claim 2, wherein a deflection amount regulating portion that regulates a deflection amount of the locking portion when the contact is inserted is provided in the partition wall.   4. The connector according to claim 2, further comprising a closing member that can be attached to and detached from the contact housing chamber and that can close the hole.

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