JP2001060482A - Zif socket connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ZIF socket connector enabling an accurate value to be measured when delicate resistance such as contact resistance is measured. SOLUTION: In this ZIF socket connector 31, each pair of contacts 33 is made by cutting a Y-shaped contact at its middle part into contact pieces and disposing the contact pieces in neighboring holes respectively in an insulator. In operating the ZIF socket connector 31, a lever 41 is driven to turn 90 deg.C. A crank part 42 laterally forces a slider 39 to slide. At the same time, one contact piece 33-1 is pressed by the other contact piece 33-2. Thus, the two contact pieces 33 operate to close. A measuring method of a resistor is described as follows. Each lead terminal is sandwiched between two contact pieces 33, and therefore four terminals of one lead terminal and of the other lead terminal are connected to a measuring instrument, thus enabling presise resistance measurement to be precisely performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a ZIF socket connector, and more particularly to a ZIF socket connector for measuring a contact resistance value of a mating contact member, that is, an electronic component to be measured.

[0002]

2. Description of the Related Art As a conventional example of this type of ZIF socket connector, there is Japanese Utility Model Application Laid-Open No. 63-168974.

[0003]

However, in the conventional example, when measuring the resistance value of the mating contact member, that is, the electronic component to be measured, the contact resistance is not taken into account.
There is a disadvantage that a precise resistance value cannot be measured.

Accordingly, a technical object of the present invention is to provide a ZIF socket connector capable of measuring an accurate value even when measuring a delicate resistance such as a contact resistance.

[0005]

The present invention employs the following means in order to solve the problems.

(1) A plurality of contacts, a base insulator for accommodating the contacts in a predetermined direction, and a slider mounted on the base insulator and sliding in a direction orthogonal to the predetermined direction. Sliding the slider and pressing and moving at least one side of the contact, the contact sandwiching one of the plurality of lead terminals of the electronic component under test, thereby One of the lead terminals of parts
A ZIF socket connector for connecting a book and the contacts, wherein the plurality of contacts comprises a contact pair of one and other contact pieces, and the one and other contact pieces are separated from each other and face each other. And each contact piece is provided with a contact portion that contacts one of the lead terminals of the electronic component, a holding portion that is held by the base insulator, and extends from the holding portion, and extends from the inside of the base insulator. Having a lead terminal part which comes out to the outside, and one contact piece is formed on one plane including the predetermined direction, and is formed on the one plane in a direction orthogonal to the predetermined direction. A holding portion extending so as to be curved by one pitch, while the other contact piece has a separation distance from the one plane Formed on the song plane, 該離 distance is in between the two lead terminal portions a predetermined distance,
A ZIF socket connector characterized by adding the other pitch to the predetermined distance between both contact portions.

(2) In the ZIF socket connector described in (1), the resistance of the electronic component is measured by connecting one lead terminal of the electronic component to be measured so that the contact pair corresponds to the lead terminal. A method for measuring a resistance value of an electronic component using a ZIF socket connector, wherein the value is measured.

(3) A contact pair used for a ZIF socket connector for holding and holding a mating contact member, wherein one of the contact pairs is on a predetermined plane. One lead terminal portion formed and extending in a predetermined direction; one curved portion extending on the predetermined plane perpendicular to the one lead terminal portion and bent by one pitch; A contact portion that extends from the portion on the predetermined plane along the predetermined direction and contacts when receiving a mating contact member, and the other contact piece has the predetermined contact portion. Formed on a substantially parallel curved surface spaced apart from a given plane, the curved surface including an orthogonal surface orthogonal to the predetermined plane, and extending along the predetermined direction. A step portion extending from the other lead terminal portion by the other pitch so as to form the orthogonal surface; and a step extending from the step portion along the predetermined direction to form the mating contact. A contact pair for use in a ZIF socket connector having a contact portion that contacts when a member is received.

(4) A ZIF socket connector using the contact pair according to (3), wherein the base insulator has mutually adjacent holes for receiving one and the other contacts of the contact pair. A ZIF socket connector, wherein each of the ZIF socket connectors is perforated so as to make a connection.

[0010]

The contact pairs used in the ZIF socket connector of the present invention act as one and the other contact pieces that are independent of each other and are separated from each other.

The one contact piece extends on a predetermined plane (one plane) in a direction perpendicular to the predetermined direction at a predetermined pitch, thereby forming a curved portion. The curved portion acts as a holding portion held in one of the adjacent holes of the base insulator.

[0012] The other contact piece is formed on a substantially parallel curved surface separated from a predetermined plane. The curved surface includes an orthogonal surface orthogonal to a predetermined plane,
In this orthogonal plane, a step portion extending so as to have the other pitch is formed. This step portion acts as a holding portion held in the other of the adjacent holes of the base insulator.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS ZIF according to an embodiment of the present invention
Before describing the socket connector, a related invention will be described.

(Related Invention) Referring to FIGS.
The ZIF socket connector 11 of the related invention includes a Y-shaped movable contact 13, a base insulator 15 having a hole 16, and a cover insulator 1 having a hole 18.
7, a slider 19 having a hole 20, and a lever 2 having a convex portion for sliding the slider 19, that is, a crank portion 22.
1, an L-shaped fitting 23, and a mounting screw 25.

Assume that the electronic component under test is a resistor. To measure the value of this resistor, the ZIF socket connector 11 is assembled and then the cover insulator 1
The electronic component to be measured is inserted into the hole 18 of FIG.

Referring to FIG. 16, lever 21 is rotated and driven by 90 degrees. At this time, the crank 2 of the lever 21
2 pushes the slider 19 laterally to slide, and one contact piece of the Y-shaped contact 13 is pressed by the other contact piece. Therefore, as a result of operating so that both contact pieces of the Y-shaped contact 13 are closed, the terminals of the electronic component to be measured are sandwiched by the contacts 13 from both sides.

In the related invention, as shown in FIG. 17, a measuring instrument is connected to one and the other contact pieces of the contact 13, that is, both ends (two terminals), and then the resistance value is measured.

FIG. 18 shows the principle of the four-terminal measurement method in which the current line and the sensing line are separated from each other. A more accurate contact resistance, that is, a value of the precise resistance can be obtained from the two-terminal measurement method of FIG. Can be.

However, in the related invention, as shown in FIGS. 19 and 20, since the two contact pieces of the contact 13 are connected, the conductor resistance between the two terminals is added to the actually measured resistance value. . As a result, when measuring subtle resistance such as contact resistance, an accurate resistance value cannot be measured.

(Embodiment of the Invention) A ZIF socket connector according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 1 to 9, a ZIF socket connector 31 according to an embodiment of the present invention includes a movable contact 33, a base insulator 35 having a hole 36 for receiving the contact 33, and a hole 38. A cover insulator 37 having a hole 39, a slider 39 having a hole 40,
A convex portion for sliding the slider 39, that is, a crank portion 42
Lever 41, L-shaped bracket 43, and mounting screw 4
5 is provided.

As shown in FIG. 2B, the feature of the present invention is that a central portion of the Y-shaped movable contact 13 of the related invention shown in FIG. 3
That is, each of them is independent.

One contact piece 33-1 is formed on a predetermined plane (one plane) and extends in a predetermined direction in a lead terminal 33-1a and a lead terminal 3-1.
A contact portion 33-1c includes a curved portion 33-1b which extends from 3-1a by one pitch P1. The curved portion 33-1b extends while being curved by one pitch P1 in a direction orthogonal to a predetermined direction on a predetermined plane.

Further, the other contact piece is formed on a substantially parallel curved surface separated from a predetermined plane (one plane). The curved surface includes an orthogonal surface orthogonal to a predetermined plane. The other contact piece has a lead terminal 33-2a and a lead terminal 33-2a on an orthogonal plane.
A step portion 33-2b extending from the other by the other pitch P2,
And a contact portion 33-2c. The separation distance is a predetermined distance between the two lead terminal parts 33-1a and 33-2a, and the predetermined distance between the two contact parts 33-1c and 33-2c. P2 is added. Note that one and the other pitches P1 and P2
Have substantially the same dimensions.

To reiterate in detail, a pair of left and right contacts 33 used in the ZIF socket connector 31 according to the embodiment of the present invention includes an electronic component to be measured (a mating contact member) (FIGS. 10A and 10C). ) Of the resistor R1 to be measured.

One contact piece 33-1 shown on the right side of FIG. 3B is formed on a predetermined plane. One contact piece 33-1 includes one lead terminal portion 33-1a extending in a predetermined direction; one pitch P1 orthogonal to one lead terminal portion 33-1a on a predetermined plane. One curved portion 33-1b that extends while bending; extends from the curved portion 33-1b in a T-shape along a predetermined direction on a predetermined plane, and comes into contact when a mating contact member is received. It has one contact portion 33-1c (T-shaped portion).

The other contact piece 33-2 shown on the left side of FIG. 3B is connected to the other lead terminal portion 33- extending in a predetermined direction along a predetermined plane.
2a; a step portion 33-2b orthogonal to the other lead terminal portion 33-2a and extending by the other pitch P2 on a plane orthogonal to the predetermined plane; Step 33- in the determined direction
The other contact portion 33-2c (T-shaped portion) that extends from 2b to a T-shape and contacts when receiving the mating contact member.
With

Curved portion 33 of one contact piece 33-1
-1b and step 33 of the other contact piece 33-2
-2b are holes 3 of the base insulator 35, respectively.
6 functions as a holding unit.

Referring to FIGS. 4A and 4B,
In the base insulator 35 shown in FIG.
The holes 36 for receiving one and the other contact pieces 33-1 and 33-2 are arranged in a staggered pattern as holes adjacent to each other.

With reference to FIGS. 8 and 9, after the ZIF socket connector 31 is assembled, the operation of the ZIF socket connector 31 will be described. First, the vertically standing lever 41 is tilted sideways and rotated and driven 90 degrees. At this time, the crank portion 42 of the lever 41 pushes the slider 39 in the lateral direction, and the slider 39 slides.

At the same time, one contact piece 33-1 is
It is pressed by the other contact piece 33-2.
Therefore, as a result of the operation of closing both contacts 33, the terminal of the device under test is clamped by contacts 33 from both sides.

When the electronic component to be measured has two lead terminals, such as a resistor, FIG.
Referring to (B) and FIG. 20, four terminals of one lead terminal c and d and the other lead terminal a and b are provided on one and other contact pieces 33-1 and 33-2. By connecting to a measuring instrument (digital voltmeter), the resistance value of the resistor R1 to be measured can be measured.

Referring to FIGS. 10C and 18, one lead terminal of resistor R1 to be measured is provided with a contact piece 33-.
1 or 33-2. Therefore, one of + I, -S, -I, and + S is connected to each of the one and the other lead terminals, and the measurement is performed by four-terminal connection, so that a very accurate resistance value can be measured.

More specifically, when measuring the resistance using the ZIF socket connector of the present invention, FIG.
As shown in (1), since two independent contacts 33 are in contact with one lead terminal of the resistor R1 to be measured, the cables for the current (I) and the sensing line (S) are provided independently. The contact point where the contact 33 contacts both lead terminals of the resistor R1, that is, the accurate resistance value from the α point to the β point can be measured.

[0035]

According to the ZIF socket connector of the present invention, the central portion of the Y-shaped contact is cut to form a pair of contacts, that is, one and the other contact pieces, which are respectively arranged in adjacent holes of the insulator. With this configuration, it is possible to provide a ZIF socket connector capable of measuring an accurate value even when a delicate resistance such as a contact resistance is measured.

Further, no force is required for attaching and detaching the electronic component to be measured. Therefore, the effects of easy insertion / removal, high contact stability, and reduced risk of deforming the lead terminals of the electronic component to be measured can be expected.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a ZIF socket connector 31 according to an embodiment of the present invention.

2A is a perspective view of a Y-shaped contact 13 used in the ZIF socket connector 11 of the related invention shown in FIG. (B) FIG. 2 is a perspective view of a pair of left and right contacts 33 used in the ZIF socket connector 31 according to the embodiment of FIG. 1, that is, one contact piece 33-1 and the other contact piece 33-2.

3A is a top view of a base insulator 15 used for the ZIF socket connector 11 of the related invention shown in FIG. (B) FIG. 2 is a top view of a base insulator 35 used in the ZIF socket connector 31 according to the embodiment of the present invention in FIG.

FIG. 4 is a cover insulator 37 used in the ZIF socket connector 31 according to the embodiment of the present invention shown in FIG. 1;
FIG.

FIG. 5 is a conceptual side view of one and the other contact pieces 33-1 and 33-2 for explaining that the contacts are staggered in the insertion direction indicated by the dotted line.

FIG. 6A is a top view of a slider 39 of the ZIF socket connector 31 according to the embodiment of the present invention. (B) It is a side view of the L-shaped fitting 43. (C) It is a side view of the lever 41.

FIG. 7A is a sectional view of the ZIF socket connector 31 taken along line cc according to the embodiment of the present invention. (B) It is a dd sectional view of ZIF socket connector 31 by an embodiment of the present invention.

FIG. 8A is a cross-sectional view of the ZIF socket connector 31 according to the embodiment of the present invention at normal times taken along the line aa. (B) It is an aa sectional view at the time of inclining the lever 41 of (A).

FIG. 9A is a bb cross-sectional view of the ZIF socket connector 31 according to the embodiment of the present invention in a normal state. (B) It is bb sectional drawing when the lever 41 of (A) is inclined.

FIG. 10A shows a case where a resistor R1 to be measured is inserted between adjacent holes A and B formed in the cover insulator of the ZIF socket connector 31 according to the embodiment of the present invention to measure the resistance value. FIG. FIG. 2B is a view for explaining a four-terminal measuring method using the ZIF socket connector 31 of FIG. 1. (C) is a diagram for explaining the principle of the four-terminal measurement method of the present invention.

FIG. 11 is an exploded perspective view of the ZIF socket connector 11 of the related invention.

12 is a top view of a cover insulator 17 constituting the ZIF socket connector 11 of FIG.

FIG. 13 is a top view of a slider 19 included in the ZIF socket connector 11 of FIG.

14 is a top view of a base insulator 15 constituting the ZIF socket connector 11 of FIG.

15 is a cross-sectional view of the ZIF socket connector 11 of FIG. 11, showing a normal state in which the lever 21 is disposed on the upper side.

FIG. 16 is a cross-sectional view of the ZIF socket connector 11 of FIG. 11 when the lever 21 is tilted sideways.

FIG. 17 is a diagram for explaining the principle of the two-terminal measurement method.

FIG. 18 is a diagram for explaining the principle of the four-terminal measurement method.

FIG. 19 is a diagram illustrating a two-terminal measurement method according to a related invention.

FIG. 20 is a diagram for explaining a four-terminal measurement method according to a related invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ZIF socket connector of related invention 13 Y-shaped movable contact 15 Base insulator 17 Cover insulator 19 Slider 21 Lever 23 L-shaped metal fitting 25 Mounting screw 31 ZIF socket connector 33 according to the embodiment of the present invention 33 Y-shaped movable 33-1 One contact piece 33-1a One lead terminal part 33-1b One curved part (holding part) having pitch P1 33-1c One contact part (T-shaped part) 33-2 The other contact Piece 33-2a the other lead terminal portion 33-2b the other step portion (holding portion) having a pitch P2 33-2c the other contact portion (T-shaped portion) 36 hole portion 35 base insulator 37 cover insulator 38 hole portion 39 slider 40 Hole 41 Lever 42 Convex (Crank) 43 L-shaped bracket 45 Mounting screw

Claims (4)

[Claims] A plurality of contacts; a base insulator for accommodating the contacts in a predetermined direction; and a slider mounted on the base insulator and slidable in a direction perpendicular to the predetermined direction. The slider is slid, and the side of at least one contact is pushed and moved, and the contact clamps one of a plurality of lead terminals of the electronic component to be measured, whereby the electronic component to be measured is A ZIF socket connector for connecting one of said lead terminals to said contact, said plurality of contacts comprising a contact pair of one and other contact pieces, wherein said one and other contact pieces are independent of each other. Each of the contact pieces is one of the lead terminals of the electronic component. A contact portion that contacts the book, a holding portion held by the base insulator, and a lead terminal portion extending from the holding portion and coming out of the base insulator to the outside; A holding portion formed on one plane including the given direction and extending on the one plane so as to be curved by one pitch in a direction orthogonal to the predetermined direction, while the other contact piece is Is formed on a curved plane having a separation distance from the one plane, and the separation distance is a predetermined distance between the two lead terminal portions, and the other distance between the two contact portions is the predetermined distance. A ZIF socket connector characterized by adding a pitch. 2. The resistance value of the electronic component according to claim 1, wherein the contact pair is connected to one lead terminal of the electronic component to be measured so as to correspond to the lead terminal. A method for measuring a resistance value of an electronic component using a ZIF socket connector, wherein the resistance value is measured. 3. A contact pair used in a ZIF socket connector for holding and receiving a mating contact member, wherein one of the contact pairs is formed on a predetermined plane. One of the lead terminal portions extending in a predetermined direction; and one of the curved portions extending at a pitch and orthogonal to the one of the lead terminal portions on the predetermined plane; And a contact portion extending along the predetermined direction on the predetermined plane and contacting when receiving the mating contact member, and the other contact piece is provided with the predetermined contact member. Formed on a substantially parallel curved surface separated from the plane, the curved surface including an orthogonal surface orthogonal to the predetermined plane, and extending along the predetermined direction. A lead terminal portion; a step portion extending from the other lead terminal portion by the other pitch so as to form the orthogonal plane; and a step extending from the step portion along the predetermined direction, and forming the mating contact member. A contact pair for use in a ZIF socket connector, having a contact portion that contacts when received. 4. A ZIF socket connector using the contact pair according to claim 3, wherein the base insulator has mutually adjacent holes for receiving one and the other contacts of the contact pair. ZIF socket connector, wherein the ZIF socket connector is formed in such a manner.