JPH0389475A - Connector - Google Patents

Abstract

PURPOSE:To arrange a power source contact at an optional position with one kind of contact installation member and contacts by inserting contacts with the same shape into the contact installation member having multiple contact holes with the same shape. CONSTITUTION:When a contact 2 is inserted into the contact hole 41 of a contact installation member 4 from the rear, a stopper section 22b on the right side of the fixed section tip of the contact 2 touches a step section 41c on the right side of a press holding hole 41b and is positioned, and a projection 22a on the side face in the width direction of the fixed section 22 bites into an inner wall and is fixed and held. When a contact 2' used for power source is inserted into the contact hole 41, its attitude is rotated by 180 deg. with the longitudinal direction set as an axis, and it is inserted in the reverse state as compared with the contact 2 for signal. If delta1<delta2, the stopper section 22b on the left side of the center axis touches a step section 41b on the left side of the contact hole 41. If delta1>delta2, the stopper section 22c on the rear side touches the step section 41c on the right side.

Description

[Detailed Description of the Invention] [Summary] Regarding a connector in which a specific contact contacts a mating contact before other contacts when inserted into a mating connector, one type of contact installation member and one type of contact are provided. The purpose is to provide a connector with a live line maintenance function that allows the power supply contact to be placed in any position. It consists of a plurality of contacts in which terminal portions to be connected to a wiring board or a cable are sequentially formed from the front side, and a contact installation member in which a plurality of contact holes of the same shape are formed for press-fitting and holding the contacts, and the contact holes are A pair of stepped portions are provided on the left and right sides of the central axis and have different positions with respect to the insertion direction of the contact. A pair of stopper parts are provided at different positions with respect to the
The contact is positioned by having different stopper portions contact one step portion or one stopper portion contacting different step portions depending on whether the contact is inserted in the forward or reverse direction.

[Industrial application field]

The present invention relates to a connector in which, when inserted into a mating connector, certain contacts contact the mating contacts before other contacts.

In electronic devices and the like that have a mounting structure in which multiple printed board units are connected by plugging them into a motherboard, it is necessary to insert and remove the printed board units for testing, maintenance, etc. while power is being supplied to the motherboard.

Particularly in a printed board unit using an IC or the like, if a signal is not input after applying power to the semiconductor element to bring it into a normal operating bias state, problems such as destruction of the element will occur.

For this reason, when the connector that connects the motherboard and the printed circuit board unit is inserted, only the specific contacts for connecting the power supply (including ground) are connected before other contacts for signal connections, and when removed, the contacts for connecting the signal line It is required that the power supply contact be disconnected after the power supply contact is disconnected. Hereinafter, such a function will be referred to as a live line maintenance function. The present invention relates to a connector having a live line maintenance function.

[Conventional technology]

In order for the connector to have a live maintenance function, among the multiple contacts, only the contact used for power (including ground) connection should be located on the front side, so that when it is inserted into a mating connector, it makes contact first, and then when it is removed Sometimes you just need to separate it at the end.

FIG. 3 is an exploded perspective view showing a conventional connector with a live wire maintenance function.

This connector includes a plurality of contacts 2 (only one is shown in the figure) embedded in a contact installation member 1 made of an insulator. The contact 2 consists of a tuning fork-shaped contact part 21 in which a pair of spring pieces having a contact point 21a at the tip face each other, a wide fixed part 22 twisted by 90 degrees from the contact part, and a terminal part 23 at the rear end. , manufactured by continuous press working from metal spring plate strips, etc.

The contact installation member 1 is made of a molded product of insulating resin, and has a plurality of contact holes 11 formed in a predetermined arrangement into which contacts are press-fitted and held.

This contact hole 11 has a narrow and vertical contact portion housing hole 11a that penetrates the front and rear surfaces, and a press-fit holding hole 11b that has a depth halfway from the rear and has a width slightly smaller than the width of the contact fixing portion 22. The hole is perpendicular to a cross shape, and an insertion hole lid for receiving a wide male contact of the mating connector 3 is formed halfway from the front side. When the contact 1 is inserted into each of the plurality of contact holes 11 as shown by the arrow, the stepped portion 11c at the end of the press-fit holding hole 11b
The contact is inserted until the stopper part 22b at the tip of the fixed part of the contact comes into contact with the protrusion 2 on the widthwise side surface of the fixed part 22.
2a bites into the wall surface in the width direction of the press-fit holding hole 11b and is fixedly held.

In the contact hole into which the power supply contact is inserted, by forming a stepped part on the back side (closer to the mating connector), the contact can be press-fitted all the way and the contact is placed in front of the other contacts. I made sure to make contact with the male contact on the other side first when inserting it.

[Problems to be Solved by the Invention] However, which position in the contact arrangement is used as a power supply or ground contact differs depending on the device design. Therefore, each time the position of the power contact changes, it is necessary to prepare a contact installation member with a different position of the step of the corresponding contact hole, and the problem is that it takes time and cost to prepare a mold each time. there were.

The present invention was created in view of the above problems, and uses one type of contact installation member and one type of contact.
It is an object of the present invention to provide a connector having a live line maintenance function that allows a power contact to be placed at an arbitrary position.

[Means to solve the problem]

The above problem consists of a plurality of contacts in which a contact part that contacts a mating contact, a fixing part that is press-fitted, and a terminal part that is connected to a printed wiring board or cable are formed sequentially from the front side, and the contact. and a contact installation member in which a plurality of contact holes of the same shape are formed for press-fitting and holding the contact, and the contact hole has a shape that allows the contact to be inserted in an upside-down state, and the contact hole has a shape that allows the contact to be inserted in an upside-down state, and is arranged on the left and right of the central axis with respect to the insertion direction of the contact. A pair of stepped portions are provided at different positions,
In addition, the fixing part of the contact is provided with a pair of stopper parts on the left and right sides of the central axis at different positions in the insertion direction. This problem is solved by the connector of the present invention, characterized in that the contacts are positioned by abutting on different step portions or by one stopper portion abutting on different step portions.

[Effect]

In the process of assembling contacts into a contact installation member, if only the desired contact is inserted upside down, the combination of the stopper part and step part that acts for positioning will be different from that of a contact inserted in the forward direction, so both contacts will have different depths. It is press-fitted into place. Therefore, there is a difference in the position of the contact portions, and the contact that is press-fitted to the back comes into contact with the mating connector first, and comes to be separated last. Since only one type of contact and contact installation member is required, manufacturing costs can be reduced.

〔Example〕

The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a connector of the present invention, and FIG. 2 is a sectional view of the connector of the present invention.

Note that the same objects are represented by the same symbols throughout the figures.

In FIG. 1, the connector of the present invention has a plurality of contacts 2.about.2" embedded in a contact installation member 4 made of an insulating material. The contacts 2 and 2'' have the same shape, but are rotated 180 degrees around the longitudinal direction and inserted in opposite orientations.

The contact installation member 4 is different from the conventional example, and the contact installation member 4 is different from the conventional example.
, 2° are all formed in the same shape regardless of whether they are for power contacts or signal contacts. That is, the contact hole 41 is
A narrow and long contact housing hole 41a that penetrates the front and rear surfaces and a press-fit holding hole 41b that has a depth from the rear to the middle of the depth and is slightly smaller than the width of the contact fixing part 22 are orthogonal in a cross shape. An insertion hole 4Ld for receiving a wide male contact of a mating connector is formed halfway from the front side. The depth from the back surface of the press-fit holding hole 41b is different on the left and right sides of the central axis, and the stepped portion 41 on the right side
c and the left step portion 41e, δ1 with respect to the insertion direction.
are formed in different positions.

The contacts 2 and 2' are the same as those described above in FIG. 3, and include a tuning fork-shaped contact part 21 in which a pair of spring pieces having a contact point 21a at the tip are opposed, and a wide contact part 21 that is twisted 90' from the contact part. It consists of a fixing part 22 and a terminal part 23 at the rear end, and is manufactured by continuous press working from a metal spring plate strip or the like. In the case of the posture of the contact 2, the fixed part 22 is bent at a right angle from the center axis to the right at the front part connected to the contact part 12 to form a front stopper part 22b, and at the rear side. A rear stopper portion 22C is formed extending leftward from the central axis. Therefore, there are two stopper parts 22b and 22c separated by a distance δ2 on the left and right sides of the central axis.
is formed.

When the contact 2 is inserted from the rear into the contact hole 41 in the illustrated position, the stepped portion 41c on the right side of the press-fit holding hole 41b
The stopper portion 22b on the right side of the tip of the fixed portion of the contact 2 is brought into contact with and positioned, and the protrusion 22a on the widthwise side surface of the fixed portion 22 bites into the inner wall and is fixedly held.

When the contact 2' used for power supply is inserted into the contact hole 41 of the contact installation member 41,
The position is rotated by 18° around the elongated direction, and the contact is inserted into the signal contact 2 upside down. Then, when this contact 2 is set to δ, <δ2, the front stopper portion 22b on the left side of the central axis is positioned by abutting against the step portion 41e on the left side of the contact hole, and the position is adjusted by the dimension of δ1. It is inserted deeper than the position of the contact 2 and is press-fitted and held. Also, if δ1>δ2,
The step part 41c on the right side and the stopper part 2 on the rear side before the left side
2c, it is inserted a distance δ2 to the back side of the signal contact 2.

Note that the contact hole 41 is designed to enable insertion in the reverse position.
, relief chamfers 41f are formed on two diagonal edges for escaping the right-angled bending inner radius of the fixing portion 22 of the contact.

Fig. 2 shows a cross section of the connector complete body in the case of δ1 and δ2.
The lower power supply contact 2'', which was inserted in the opposite position, is positioned when the front stopper part 22b'' contacts the step part (not shown) on the front side of the paper, and the lower power contact 2'' is inserted in the opposite position. It is positioned to the front (left side) by a positional difference δ1.As a result, even if the same contact is used, the contact portion 21a has δ,
There is a positional difference, and the male contacts 31 of the mating connector 3 to be inserted contact the power supply contacts 2' first.

〔Effect of the invention〕

As described above, according to the present invention, contacts of the same shape can be assembled into a contact installation member in which a plurality of contact holes of the same shape are formed by simply changing the orientation, and the contact mounting position relative to the insertion direction with the mating connector can be adjusted. Therefore, connectors having various types of live line maintenance functions in which power contacts are disposed at arbitrary contact positions can be manufactured from a single type of contact and contact installation member, resulting in a significant cost reduction effect.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a connector of the present invention, FIG. 2 is a sectional view of the connector of the present invention, and FIG. 3 is an exploded perspective view of a conventional connector. In the figure, 2.2° - contact, 21 - contact part, 22 -
Fixed part, 22b, 22cm stopper part,
23--One terminal portion, 4--Contact installation member, 41--Contact hole, 41b--Press-fit holding hole,
41c, 41e - Step part, 41f - Relief chamfer,
3... mating connector, 31- mating contact. Figure 1: A cross-sectional view of the main part of the present invention, Figure 2.

Claims (1)

[Claims] A contact portion (21) that contacts a mating contact, a fixing portion (22) that is press-fitted and fixed, and a terminal portion (23) that is connected to a printed wiring board or cable are sequentially arranged from the front side. Consisting of a plurality of formed contacts (2, 2') and a contact installation member (4) in which a plurality of contact holes (41) of the same shape are formed for press-fitting and holding the contacts (2, 2'), The contact hole (41) has a shape that allows the contact (2) to be inserted in an upside-down state, and is provided with a pair of stepped portions (41c, 41e) at different positions on the left and right sides of the central axis with respect to the contact insertion direction, Further, the fixing part (22) of the contact is provided with a pair of stopper parts (22b, 22c) at different positions in the insertion direction on the left and right sides of the central axis, and different stopper parts (22b, 22c) are provided in different positions in the insertion direction of the contact. The portions (22b, 22c) are one stepped portion (
41c) or one stopper part (22b
) in which the contacts (2, 2') are positioned by coming into contact with different step portions (41c, 41e).