KR101197168B1 - Bga socket with improved structure - Google Patents

Abstract

The present invention relates to a visually improved socket which does not require a pinning plate for fixing a contact.
The present invention has a plurality of first pin head holes through which the pin head of the contact penetrates to the fixing body, and each first pin head hole is a step for fixing the contact body fastened therein up and down. The contact body includes a locking hole formed through the center of the contact body and a locking hole formed on the upper side of the locking hole and having an oblique inclination toward the lower side to restrain the downward motion of the contact when the upper stop of the contact is stopped. Characterized by including a jaw.
Due to such a structure, there is an effect of reducing the component compared to the conventional BG socket.
Therefore, it is possible to block the occurrence of defects due to the assembly tolerances generated when the heterogeneous parts are combined.
In addition, productivity due to defective containment may be improved.
As a result, the overall product cost can be reduced.

Description

BG SOCKET WITH IMPROVED STRUCTURE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visual socket, and more particularly, to an improved visual socket which does not require a pinning plate for fixing a contact.

In the IC package shape, BGA (BGA) is an innovative improvement in IC size and thickness by arranging the terminals of the IC, that is, solder balls, on the entire bottom surface of the IC, unlike other types of ICs. In the IC, the spacing between the solder balls is generally 0.5mm, 0.75mm, 0.8mm, 1.0mm, 1.27mm, 1.6mm, etc., and the diameter of the solder balls is about 0.3mm to 0.9mm and the solder at the bottom of the IC The height of the ball is 0.2mm to 0.6mm, and the smaller the pitch between the solder balls, the smaller the diameter and height of the solder balls.

On the other hand, a BG test socket is used to test the BG as described above, and as a prior art, a BG socket (Korean Registered Utility Model No. 0356022) is disclosed.

Figure 1 is a side cross-sectional view showing a coupling state of the prior art, briefly described with reference to the prior art as follows.

Referring to the prior art with reference to Figure 1, the prior art and the housing 40 is formed with a plurality of contact pin coupling holes 41 penetrated up and down; A base cover 50 coupled to a lower surface of the housing 40 and having a through hole 51 communicating with the contact pin coupling hole 41; The housing is accommodated in the contact pin coupling hole 41 of the housing and at the same time accommodated in the base cover 50, the lower portion protrudes to the lower side of the base cover 50 and the upper portion is formed to protrude to the upper side of the housing 40 A contact pin 60; A through hole 71 spaced apart from the upper side of the housing 40 and elastically coupled to the housing 40 to elastically move up and down, corresponding to the contact pin coupling hole 41 of the housing. It is formed, the ball guide 70 for receiving and contacting the busy device package 1 for testing and the device insert 2 on which the busy device package 1 is placed.

Since such a configuration has many components, defects may occur due to assembly tolerances generated when joining dissimilar parts.

In addition, productivity due to defects can be reduced.

As a result, the overall product price may increase.

The purpose of the present invention in order to improve the fish properties and cost reduction by reducing the number of parts compared to the prior art is the improved structure that does not require a pin fixing plate (base cover in the prior art) for fixing the contact A socket is provided.

In addition, to provide a contact with a locking function when coupled with the fixed body of the socket for the above purpose.

In order to solve the above technical problem, the present invention provides a fixed body, a working body coupled to the upper and lower sliding sides of the fixed body, a plurality of contacts positioned at both ends of the fixed body and the working body, respectively, and the A contact socket comprising a guide plate for guiding the contact to pick up the ball when the contact is engaged through the fixed body and the working body, wherein the contact is a contact body located at a stop of the contact. And a pair of pin heads extending to the upper side of the contact body so as to face each other, the center gap being narrower than the upper and lower gaps, and a pair of pin heads having an upper end electrically contacting the busy ball, and a pin leg extending below the contact body. The fixed body has a plurality of first pin head holes through which the pin head of the contact penetrates. Each of the first pin head hole is characterized in that the stepped portion for fixing a contactor secured to the inner body in the vertical form.

Preferably, the stepped portion is characterized in that it comprises a first stepped portion for stopping the upper fastening of the contact at both ends of the inner top.

Also preferably, the stepped portion may further include a second stepped portion that restrains the downward movement of the contact when the upper engagement stop of the contact to the fixed body.

More preferably, the second stepped portion is formed in the inner lower center of the first pin head hole, characterized in that the height of the stepped to increase from the lower side to the upper side.

In addition, the contact body is a locking hole formed through the center of the contact body, and formed on the upper side of the locking hole has an oblique inclination toward the lower side to restrain the downward movement of the contact when the upper locking stop of the contact; Characterized in that it comprises a locking jaw.

Also preferably, the locking hole is characterized by having a rectangular shape.

And preferably, the locking jaw has a rectangular shape smaller than the shape of the locking hole.

As described above, the present invention includes a stepped portion formed in the first pin head hole of the fixed body and a locking step formed in the center of the contact body.

Due to such a structure, there is an effect of reducing the component compared to the conventional BG socket.

Therefore, it is possible to block the occurrence of defects due to the assembly tolerances generated when the heterogeneous parts are combined.

In addition, productivity due to defective containment may be improved.

As a result, the overall product cost can be reduced.

1 is a side cross-sectional view of the prior art.
2 is an exploded perspective view according to an embodiment of the present invention.
3 is a perspective view of a guide plate according to an embodiment of the present invention.
Figure 4 is a perspective view of the working body according to an embodiment of the present invention.
5 is a perspective view of the fixing body according to an embodiment of the present invention.
6 is a partial perspective view of the first pin head hole by BB ′;
7 is a perspective view of a contact according to an embodiment of the present invention.
8 is a partial perspective view of the back of the contact shown in FIG. 7;
9 is a partial cross-sectional view of AA 'coupled to the fixed body and the contact.
10 is a partial cross-sectional view of the BB 'coupled to the fixed body and the contact.

The present invention relates to a Wigie socket having an improved structure, which will be described in detail with reference to preferred embodiments of the present invention.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, they can be replaced at the time of the present application It should be understood that there may be various equivalents and variations.

Referring to Figures 2 to 8 with respect to the BGA socket improved structure according to an embodiment of the present invention as follows.

Figure 2 is an exploded perspective view according to an embodiment of the present invention, the present invention includes a guide plate 10, the working body 20, the operating spring 30, the fixed body 100 and the contact 200 largely It is composed.

Figure 3 is a perspective view of a guide plate 10 according to an embodiment of the present invention, a plurality of balls of the BG to be inserted at the same time when the BG is seated in the guide plate 10 pinhead 220 to be described later A plurality of slit holes (10h) is formed to guide the movement of the spherical groove (h1) is formed at each position where a plurality of balls of the busi is seated in the slit holes (10h).

Therefore, a large number of balls of the BD can be stably seated in a predetermined position.

In addition, the lower surface of the guide plate 10 is formed with a coupling protrusion (a1) for coupling with the fixed body 100 to be described later.

The coupling protrusion a1 is formed in the same pair in each diagonal direction.

Specifically, the pair of coupling protrusions (a1) has a shape that is fitted into the insertion groove (h2) of the upper and lower guide protrusions 130 shown in Figure 5 to be described later, the other pair of coupling protrusions (a1) is a vertical guide protrusion to be described later It has an insertion groove so that 130 is inserted.

Due to this shape, the guide plate 10 may be fixedly coupled to the fixed body 100 by being fitted in the insertion groove h2 formed on the upper surface of the upper and lower guide protrusions 130 of the fixed body 100.

In addition, the coupling protrusion (a1) is preferably provided with at least two, the fixing body 100 of the present embodiment may be provided with four coupling protrusion (a1) to minimize the amount of torsion of the working body (20). .

On the other hand, the lower surface of the guide plate 10 is formed with a projection 13, the projection 13 is positioned to be guided through the through hole 26 of the operating body 20.

Figure 4 is a perspective view of the operating body 20 according to an embodiment of the present invention, the operating body 20 is a component that is coupled to the upper and lower sliding to the upper portion of the fixed body 100 to be described later, the operating body ( 20, a plurality of second pin head holes 20h are formed to penetrate the pin head 220 of the contact 200 to be described later.

Specifically, the second pin head hole 20h is formed to be arranged to have a predetermined length in the same direction as the shape direction of the first pin head hole 100h of the fixed body 100.

The working body 20 is formed to have a rectangular shape corresponding to the fixed body 100 to be described later when viewed in plan,

On the other hand, on both sides of the operating body 20 guides the vertical sliding movement of the operating body 20, limit the movement distance, the elastic body 25 for elastic coupling with the fixed body 100 is formed.

Specifically, it has a projection not shown inside, due to this structure the elastic piece 25 of the working body 20 is coupled to be coupled to the elastic projection 110 of the fixed body 100, the fixed body 100 ) And the working body 20 can be combined.

At this time, the working body 20 is coupled to the fixed body 100 so that the sliding movement can be made in the vertical direction.

The upper and lower guide holes 23 are formed at positions corresponding to the upper and lower guide protrusions 130 of the fixed body 100 around the plurality of second pin head holes 20h, and the fixed body 100. In the state in which the operating body 20 is coupled, the upper and lower guide protrusions 130 are inserted into the upper and lower guide holes 23 to guide the vertical sliding of the operating body 20.

On the other hand, the operation body 20 is formed with a spring guide protrusion 22 at a position corresponding to the operation spring receiving groove 120 of the fixed body 100 to be described later, the operation spring 30 in the spring guide protrusion 22 The other end of) will be fitted.

Specifically, the fixed body 100 is formed with an operating spring receiving groove 120 for receiving one end of the operating spring 30 to receive one end of the operating spring 30, the operating body 20 to the operating spring 30 A spring guide protrusion 22 is formed through the other end of the inner side, and is fitted into the operating spring receiving groove 120 in a state in which the operating spring 30 is compressed when the fixed body 100 and the operating body 20 are coupled to each other. Will be.

As such, the operating spring 30 is interposed between the fixed body 100 and the working body 20, and the working spring 30 is upwardly moved from the fixed body 100 by the working body 20. Allow elastic support.

On the other hand, the working body 20 is located between the pair of pin heads 220 of the contact, the working body 20 is located in the center of the pair of pin heads 220 when the sliding movement downwards and pressed to both sides As the upper interval of the pair of pin heads 220 is widened, and the working body 20 is located above the pair of pin heads 220 when the upper body is restored upward, A plurality of actuators 21 are provided to release the pressing force in the center to restore the upper gap of the pair of pinheads 220.

Specifically, the operator 21 is integrally provided in each second pin head hole 20h through which the pin head 220 of the contact passes.

This, the operation associated with the operator 21 and the pin head 220 of the contact will be described in detail in the description of the operation of the present embodiment.

5 is a perspective view of the fixing body 100 according to an embodiment of the present invention, the fixing body 100 is a component designed to operate the above-described operating body 20 to slide up and down.

As shown in FIG. 5, the fixed body 100 is provided with an operation spring receiving groove 120 for accommodating one end of the aforementioned operation spring 30, and an operation spring in the operation spring accommodation groove 120. 30 is installed to be accommodated.

In addition, both sides of the fixed body 100 limits the vertical movement distance of the above-described operating body 20, the elastic protrusion 110 for elastic coupling with the operating body 20 is formed.

In addition, the upper and lower guide protrusions 130 are formed around the first pin head hole 100h to guide the vertical sliding movement of the operating body 20 when coupled with the operating body 20.

The upper and lower guide protrusions 130 are formed in the same pair in each diagonal direction.

The pair of upper and lower guide protrusions 130 forms an insertion groove h2 to be fitted with the coupling protrusion a1 shown in FIG. 3, and the pair of other upper and lower guide protrusions 130 does not form the insertion groove h2. Do not.

In addition, the upper and lower guide protrusions 130 are preferably provided with at least two, in order to minimize the amount of torsion of the working body 20 of the fixed body 100 of the present embodiment, four upper and lower guide protrusions (Fig. 5) 130).

On the other hand, the present invention is the main feature that does not require a pin fixing plate for fixing the contact 200, unlike the prior art, this technical feature will be described later and the structure of the first pin head hole (100h) It is in the structure of the contact 200.

Specifically, a plurality of first pin head holes 100h are formed at the center of the fixing body 100 so that the pin head 220 of the contact penetrates.

In addition, the first pin head hole (100h) is formed to be arranged to have a predetermined length in the diagonal direction of the square, the pin head 220 of the contact 200 penetrates from the lower surface of the fixed body 100 to the upper surface Is located.

FIG. 6 is a partial perspective view of the first pin head hole 100h viewed from the B-B 'direction of the fixing body 100 shown in FIG. 5.

Looking at the interior of the first pin head hole (100h) with reference to Figure 6, the interior of the first pin head hole (100h) has the same cross-sectional area as the contact (200) so that the contact (200) can be fastened.

In addition, a first stepped portion 100a is formed on the inner upper side of the first pin head hole 100h so as to realize an appropriate fastening height when the contact 200 is slid from the lower side to the upper side.

Specifically, the first stepped portion 100a is formed at both ends of the upper inside of the first pin head hole 100h so that the contact 200 is caught and stopped when the contact 200 is fastened to the fixed body 100. .

And the first pin head hole (100h) inside the lower center of the contact 200 is engaged with the engaging jaw 215 formed in the center of the contact body 210 of the contact 200 so that the contact 200 is fastened from the fixed body 100. The second stepped portion 100b is formed.

The second stepped portion 100b has almost no height of the lower step so that the locking step 215 of the contact 200 flows upward in the fastening process of the contact 200 and the fixed body 100. It has a shape in which the step becomes higher.

7 is a perspective view of the contact 200 according to an embodiment of the present invention, Figure 8 is a partial perspective view showing the back of the contact shown in FIG.

The contact 200 is formed to extend from the contact body 210, the upper side of the contact body 210 to each other, the center interval is narrower than the upper and lower intervals, the upper end of the pair of pinheads in electrical contact with the ball And a pin leg 230 extending from the lower side of the contact body 210.

The basic inner spacing of the pair of pinheads 220 is configured to be smaller than the diameter of the ball, is elastically deformable so that the inner spacing can be adjusted, and the pair of pinheads 220 is burnt. When the inner gap is opened by sexual deformation, it is formed to be larger than the diameter of the ball.

When the contact 200 is viewed from the side, the pin head 220 is formed to the same thickness, the contact body 210 is the same as the pin head 220 at the lower side of the pin head 220 or It is formed to extend thickly, the pin leg 230 is formed to extend downward from the contact body 210 has the thinnest thickness.

The contact body 210 has a rectangular locking hole 210h at the center and a locking jaw 215 formed obliquely above the locking hole 210h.

9 and 10 will be described in detail with respect to the fastening process and effects of the fixing body 100 and the contact 200, the main technical features of the present invention.

9 is a partial cross-sectional view of the A-A 'coupled to the fixed body and the contact.

10 is a partial cross-sectional view of the BB 'coupled to the fixed body and the contact.

9 is a partial cross-sectional view of A-A 'coupled to the fixed body 100 and the contact 200, Figure 10 is a partial cross-sectional view of B-B' coupled to the fixed body 100 and the contact 200.

The contact 200 is fastened through the upper side from the lower side of the first pin head hole (100h) of the fixing body (100).

Specifically, the pin head 220 of the contact 200 passes through the second stepped portion 100b formed at the inner lower center of the first pin head hole 100h.

In this case, the basic inner spacing of the pair of pin heads 220 is elastically deformable so that the upper opening is wider than the second stepped portion 100b when the fastening proceeds upward.

When the pin head 220 passes through the first stepped part 100a formed at both ends of the inner upper side of the first pin head hole 100h, the contact body 210 is connected to the first stepped part (1). 100a), the contact 200 is no longer able to proceed upwards.

Meanwhile, the elastically deformable latching jaw 215 formed at the center of the contact body 210 proceeds upward while being pressed by the second stepped portion 100b formed at the lower center of the inner side of the first pin head hole 100h. When the body 210 is caught by the first stepped part 100a and stops upward fastening, the contact with the second stepped part 100b is no longer performed, and thus the pressed state is released to release the second stepped part 100b. Engage with the top side.

Due to this configuration, when the contact 200 is fastened to the fixed body 100, the contact body 210 is caught on the first stepped portion 100a and the upper side of the second stepped portion 100b. The locking jaw 215 is caught so that the contact 200 cannot flow up and down.

Conventionally, after the contact body 200 is fastened to the fixing body 100, the pin fixing plate is fastened to the contact body 200 to fix the contact body 200, but the pin fixing plate is unnecessary due to such a structural improvement.

As described above, although the present invention has been described with reference to the limited embodiments and the drawings, the present invention is not limited to the embodiments, and the technical spirit of the present invention by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the equivalent scope of the claims set out below.

10: guide plate 20: working body
30: operating spring 100: fixed body
100h: zepin head hole 100a: first stepped portion
100b: second stepped portion 110: elastic projection
120: operating spring receiving groove 130: up and down guide protrusion
200: contact 210: contact body
210h: locking hole 215: locking jaw
220: pin head 230: pin legs

Claims (7)

A fixed body, an operating body coupled to be slidably up and down on an upper portion of the fixed body, a plurality of contacts positioned at both ends of the fixed body and the operating body, respectively, and the contact penetrating the fixed body and the operating body In the busy socket is configured to include a guide plate for guiding the contact to pick up the busy ball when
The contact is formed in the contact body located in the middle of the contact and the upper side of the contact body is formed opposite to each other, the center spacing is narrower than the upper and lower spacing, the upper end of the pair of pinheads in electrical contact with the busy ball And a pin leg extended to the lower side of the contact body,
The fixed body has a plurality of first pin head holes through which the pin head of the contact penetrates, and each of the first pin head holes is engaged with an upper end of the contact body fastened therein to limit upward movement of the contact. A first stepped portion and a second stepped portion provided with a lower end of the lower side of the engaging jaw while having a sloped upward side in the center of the lower side of the first stepped portion to limit the downward movement of the contact;
The contact body,
The structure includes a locking hole formed through the center of the contact body, and a locking jaw formed on the upper side of the locking hole and having an oblique inclination toward the lower side to stop downward movement of the contact when the upper contact of the contact is stopped. Busyie this socket.
delete delete delete delete The method of claim 1,
The locking socket has a rectangular shape, characterized in that the improved bi-directional socket.
The method of claim 1,
The locking jaw has a rectangular structure smaller than the shape of the locking hole, the improved socket structure.

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