JP2002158067A - Plug and play connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and strong plug and play connector, with clear contact-start point and which can securely follow sequence. SOLUTION: A socket contact is provided with a chevron contact part 21 receiving a mating contact to make contact and a straight terminal part 23 extended from the chevron contact part 21. The chevron contact part 21 consists of a tapered end part 25 extending as a free end at an insertion-coupling side, a top part 27 extending from the tapered end part 25 in an L-shape as a bent part R and a tapered middle part 29 extended from the top part 27 to the straight terminal part 23. A insulating coating film part 17 is formed either at the tapered end part 25 or the tapered middle part 29 to reduce surface area of a part where metal is exposed. As a result, two areas of the insulating coating film part 17 and reduced exposure part are set up, that is, nonconductive and conductive areas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-swap connector.

[0002]

2. Description of the Related Art NEC Technical Report Vol. 45, no. 10,
According to the first column of the left column on page 89 of 1992, in the hot-swap connector, hot-swap (insertion / removal of a package in an energized state)
In order to prevent IC destruction at the time of operation and low insertion force of the connector, three stages (ground terminal, power terminal,
And the order of insertion and removal of the signal terminals one after another, that is, the sequence.

Incidentally, the contact start position of the contact / counterpart contact is the position of the first contact point at which the tips of the exposed metal parts physically start contacting each other. for that reason,
In the conventional hot-swap connector, the fitting length L of the pin contact is shifted in two or three steps.

[0004] This type of hot-swap connector has long been known as an IE.
C (International Electrical)
Commission) / DIN (Deutsche)
Industrie Normen), the pin contact length L is 5.46.
/4.86/4.26 mm three-stage hot-swap was performed.

Currently, the most popular hot-swap connector is PCMCIA (PersonalComputer).
Memory Card Internationala
lAssociation) / JEIDA (Japan)
ElectronicIndustry Level
Opt. Association) standard
In the C card connector, the pin contact length L is 3.5 mm for the detection pin, 4.25 mm for the signal pin, and ground (power supply).
There are three stages of 5.00mm pin hot swapping.

[0006]

However, in the conventional hot-swap connector, it is necessary to increase the length of the hot-wire pin in order to ensure the sequence. as a result,
The size of the connector must be increased by the length of the step. In addition, there is a disadvantage that the length of the pin is increased and the strength is reduced.

In the conventional hot-swap connector, for example, when the stroke of the contact is short, the electrical contact start position, that is, the position of the first contact point may not always be constant. As a result, there is a disadvantage that the electrical contact start position is shifted and the contact timing varies.

[0008] Therefore, a technical problem of the present invention is to provide a hot-swap connector in which the contact start position is reliable, the sequence can be assured, the size is small, the strength is large, and the contact timing does not vary. is there.

Another technical object of the present invention is to provide a hot-swap connector with low insertion / extraction force at the time of mating / removal of the connector and excellent operability.

[0010]

To solve the problems of the present invention, the following means are adopted.

(1) A contact having a contact portion that comes into contact with a mating contact, wherein a part of the contact portion is provided with an insulating coating film to form an insulating coating film portion, whereby the insulating coating film portion is formed. A non-conductive / conductive region provided between the contact and the metal exposed portion.

(2) A socket contact having a mountain-shaped contact portion that receives and contacts a mating contact and a straight terminal portion that extends from the mountain-shaped contact portion. A tapered end portion extending as a free end of the tapered end portion, a top portion extending from the tapered end portion into a "-" shape as a bent R portion, and a tapered intermediate portion extending from the top portion to the straight terminal portion. In one of the tapered end portion and the tapered intermediate portion, an insulating coating film is formed in a strip shape to reduce the surface area of the metal exposed portion. As a result, the non-conductive property between the insulating coating film portion and the reduced exposed portion is reduced. Socket contact, characterized in that two conductive regions are provided.

(3) The socket contact according to (2), wherein the insulating coating film is formed on the tapered end portion and the tapered intermediate portion, so that the conductive film is non-conductive, conductive, and non-conductive. A socket contact, wherein three regions are provided.

(4) In contrast to the connector having a plurality of socket contacts described in (1), the mating connector is
As a result of having at least two mating contacts having mating contact portions provided with steps so as to shift the fitting length, when the connector is mated with the mating connector, the contact portion and the mating contact are A hot-swap connector comprising a sequence structure for forming a time difference in contact between conductive regions with a part.

[0015]

A part of the contact portion of the socket contact according to the present invention,
The top portion extending in the shape of a "<" as a bent R portion is formed in a strip shape extending in the longitudinal direction with the insulating coating film. As a result, the insulating coating film portion is formed as a non-conductive region, and the area of the exposed metal portion is reduced, thereby acting as a non-contact region. On the other hand, the exposed metal portion is a conductive region and acts as a contact region.

The contact portion of the socket contact according to the present invention comprises:
When starting the mating with the mating contact, the contact portions make physical contact with each other. At this time, the contact portion of the contact is an insulating coating film portion, while the contact portion of the mating contact is an exposed metal portion. Therefore, when fitting with the mating contact is started, the contact portions act as electrical non-contact even if they are in physical contact with each other.

The electrical contact start position is a boundary where the exposed metal portions of the contacts physically start contacting each other. In this way, the insulating coating film ensures the contact start position, makes electrical contact, and starts electrical conduction.

Further, even when the stroke of the contact is short, the electric contact start position can be easily set. As a result, the entire length of the connector can be shortened, the size of the connector can be reduced, and variations in contact timing can be eliminated.

If a coating material having lubricity is used for the insulating coating film portion, the connector becomes a low insertion / extraction force, and the operability with a large number of cores is improved.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot-swap connector according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 1 to 4, socket contacts 13-1 and 13-2 used in hot-swap socket connector 11-1 according to the first embodiment of the present invention include contact portions 15-1. , 15-2 are provided with an insulating coating film, and are formed as insulating coating film portions 17-1 and 17-2. Thus, two non-conductive and conductive regions of the insulating coating film portions 17-1 and 17-2 and the metal exposed portion are provided.

Referring to FIG. 2 in detail, the socket contact 13 includes a mountain-shaped contact portion 21 that receives and contacts the mating contacts 42 to 46 and a straight terminal portion 23 that extends from the mountain-shaped contact portion 21. Have. Mountain-shaped contact 2
1 is a tapered end 25 extending as a free end on the fitting side;
It comprises a top portion 27 extending from the tapered end portion 25 as a bent R portion in a “<” shape, and a tapered intermediate portion 29 extending from the top portion 27 to the straight terminal portion 23.

An insulating coating film portion 17 is formed on one of the tapered end portion 25 and the tapered intermediate portion 29 to reduce the surface area of the exposed metal portion. as a result,
Two non-conductive and conductive regions are provided: an insulating coating portion 17 and a reduced exposed portion.

Further, an insulating coating film is formed on the tapered end portion and the tapered intermediate portion, and the non-conductive / conductive
Three non-conductive regions may be provided.

When a PI coating of polyimide resin for preventing wicking of solder or an epoxy coating of epoxy resin is used as a coating material having lubricity on the insulating coating film portion, a connector having a low insertion / extraction force can be obtained. Operability is improved.

On the other hand, the hot-swap socket connector 11-1
The mating connector, that is, the hot-swap pin connector 41-1 that fits into the connector is shown in FIGS.

The hot-swap pin connector 41-1 includes contact portions 52-1 and 5-1, 5 which come into contact with the contacts 13-1 and 13-2.
Pin contacts 42-1, 43-1, 44-1, 45-1, and 46 having 3-1, 54-1, 55-1, and 56-1
-1. The pin contact 42-1 is arranged at the end in the connector longitudinal direction for power (ground), and has the longest contact length. Also, the pin contact 43-1
Are arranged next to the power (ground) pin contact 42-1 and are for detection and have the shortest contact length. On the other hand, the pin contacts 44-1, 45-1, 46-1 are
It is arranged at the center in the longitudinal direction of the connector and has the same length with a medium contact length for signals.

As described above, FIG. 13 (a) is compared with FIGS. 13 (b) to 13 (d), and according to the hot-swap connector 11-1 of the present invention, each contact between the mating contact and the mating contact is made. At this time, the contact start position shifts downward from the vicinity of the tapered portion at the tip (see FIG. 13A), and as a result, each contact 13
The contact start position at -1 is assured, and the sequence connection can be reliably performed.

Further, the socket contact 13-1A according to the modification of FIG. 10 may be used. In the socket contact 13-1A, not only the insulating coating 17-1a is applied to the tapered portion at the tip, but also the insulating coating 17-1b is applied to the portion excluding the bent R portion.

The mating connector (pin connector) 41-3 in FIGS. 11 and 12 may be pin contacts 72-1 and 72-2 having insulating coating film portions 77-1a and 77-1b, respectively. good.

Next, referring to FIG. 8, in a hot-swap socket connector 11-2 according to a second embodiment of the present invention,
One socket contact 33-1, 33-2, 33-
Socket contacts 33 among 3, 33-4 and 33-5
-1 is the longest for power supply (ground), the socket contact 33-2 is the shortest for detection, and the socket contacts 33-3 ... 33-5 have the same medium length for signals.

On the other hand, the mating connectors (pin connectors) 41-2 in FIG. 9 all have the same length.

When the contacts of the hot-swap socket connector 11-2 and the mating connector (pin connector) 41-2 are mated, the power (ground) socket contact 33-1 is turned on first. Then, the signal socket contacts 33-3... 33-5 and finally the detection socket contacts 33-2 are turned on slowly.

[0034]

The hot-swap connector of the present invention has a contact provided with two non-conductive and conductive regions between the insulating coating film portion and the exposed metal portion. By providing the steps, the respective contact start positions with the counterpart contact are clarified, and the time difference is provided, so that the sequence can be reliably taken. Therefore, there is an effect that a hot-plug connector having a small size and high strength can be obtained.

Further, according to the present invention, the non-conductive region of the insulating coating film portion is formed by applying a desired amount of coating. Therefore, the electrical contact start position can be easily set, and the effect of eliminating the variation in the contact timing can be expected.

In addition, according to the present invention, if a coating material having lubricity is used for the insulating coating film portion, the connector becomes a low insertion / extraction force, and the effect of improving operability with a large number of cores can be expected. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a hot-swap socket connector 11-1 having a cut surface according to a first embodiment of the present invention.

FIG. 2 is a front view of a socket contact 13-1 used in the hot-swap socket connector 11-1 of FIG. 1, in which an insulating coating 17-1 is applied.

FIG. 3 is a cross-sectional view of the hot-swap socket connector 11-1 according to the embodiment of the present invention, taken along line III-III of FIG.

FIG. 4 is a cross-sectional view of the hot-swap socket connector 11-1 according to the embodiment of the present invention, taken along line IV-IV of FIG.

FIG. 5 is a perspective view having a cross section of a mating connector (pin connector) 41-1 of the hot-swap socket connector 11-1 of FIG.

6 is a mating connector (pin connector) 41- of FIG.
8 is a cross-sectional view taken along the line VI-VI of FIG. 7.

7 is a mating connector (pin connector) 41- of FIG.
7 is a cross-sectional view taken along a line VII-VII of FIG. 6.

FIG. 8 is a sectional view of a hot-swap connector 11-2 according to a second embodiment of the present invention.

FIG. 9 is a sectional view of a mating connector (pin connector) 41-2 of the hot-swap connector 11-2.

FIG. 10 is a front view of a socket contact 13-1A according to a modified example of the socket contact 13-1 in FIG. 2, in which insulating coatings 17-1a and 17-1b are applied.

11 is a mating connector (pin connector) 41 of FIG. 7;
1 is a mating connector (pin connector) 4 according to a modification of -1.
It is sectional drawing of 1-3.

12 is a mating connector (pin connector) 4 of FIG.
FIG. 13 is a sectional view taken along line XII-XII of FIG. 11, which is a sectional view of 1-3.

FIG. 13A is a front view for explaining a contact start position between contacts used for the hot-swap socket connector 11-1 according to the first embodiment of the present invention;
(B) to (d) are comparative examples, in which the variation b of the contact timing position is smaller than the step a. Comparative example (b) has A: large or B: small, and comparative example (d) has A: small or B: large.

[Explanation of symbols]

11-1 Hot-plug socket connector according to the first embodiment of the present invention 11-2 Hot-plug socket connector according to the second embodiment of the present invention 13-1 One socket contact 13-1A Deformation of one socket contact Example 13-2 The other socket contact 15-1 One contact part 15-2 The other contact part 17-1, 17-2 Insulating coating film part 21-1, 21-2 Mountain-shaped contact part 23 Straight terminal part 25 Taper End part 27 Top part 29 Taper middle part 33-1, 33-2, 33-3, 33-4, 33-5
One socket contact 41-1 Mating connector (pin connector) 41-2 Mating connector (pin connector) 41-3 Mating connector (pin connector) 42-1, 43-1, 44-1, 45-1, 45-1 46-1
Pin contact 52-1, 53-1, 54-1, 55-1, 56-1
Contact part 17-1a, 17-1b Insulation coating film part 72-1, 72-2 Pin contact 77-1a, 77-1b Insulation coating film part

Claims (4)

[Claims] 1. A contact having a contact portion that comes into contact with a counterpart contact, wherein an insulating coating film is applied to a part of the contact portion to form an insulating coating film portion. A contact, wherein two regions of non-conductivity and conductivity with a metal exposed portion are provided. 2. A socket contact having a mountain-shaped contact portion for receiving and contacting a mating contact and a straight terminal portion extending from the mountain-shaped contact portion, wherein the mountain-shaped contact portion is provided on a mating side. A tapered end portion extending as a free end, a top portion extending from the tapered end portion into a "-" shape as a bent R portion, and a tapered intermediate portion extending from the top portion to the straight terminal portion. In one of the tapered end portion and the tapered intermediate portion, an insulating coating film is formed in a strip shape to reduce the surface area of the metal exposed portion. A socket contact, characterized in that two regions are provided. 3. The socket contact according to claim 2, wherein the insulating coating film is formed on the tapered end portion and the tapered intermediate portion, so that the non-conductive, conductive, and non-conductive portions are formed. Socket contact, wherein the three regions are provided. 4. A connector having a plurality of socket contacts according to claim 2, wherein the mating connector has at least two mating contacts having mating contact portions provided with steps so as to shift the fitting length.
As a result, when the connector is mated with the mating connector, a live structure is provided which has a sequence structure for forming a time difference in contact between conductive regions of the contact portion and the mating contact portion. Insertion / extraction connector.