KR20220051067A - Connection Pin For High Current Carrying - Google Patents

Abstract

According to one aspect of the present invention, a connection pin comprises: a first plunger formed by cutting and bending a metal plate member and configured as a single body; a second plunger formed by cutting and bending a metal plate member and configured as a single body; and a coil spring supporting the first plunger and the second plunger to provide elastic force thereto. The first plunger includes a 1-1 sliding plate and a 1-2 sliding plate facing each other. The second plunger includes a 2-1 sliding plate and a 2-2 sliding plate facing each other.

Description

Connection Pin For High Current Carrying

The present invention relates to a connection pin that enables elastic buffering and electrical connection between both ends, and more particularly, to a connection pin that enables large-capacity current transmission.

In the conventional pogo pin, the coil spring is built into the outer cylinder and the electrical path is formed via the outer cylinder. Recently, a connection pin that eliminates the outer cylinder and penetrates the inner space of the coil spring to configure the electrical path is known. In this connection pin, relative sliding is possible with the lower end of the upper plunger and the upper end of the lower plunger in contact with each other in the inner space of the coil spring, and an electrical path is formed through direct contact between the upper plunger and the lower plunger.

However, in order to transmit a large-capacity current signal or power supply using such a connection pin, the contact resistance between the plungers must be small. However, there is a problem in that it is not easy to lower the contact resistance with the conventional connection pin structure.

Although the problems and problems of the prior art have been described above, recognition of these problems and problems is not obvious to those of ordinary skill in the art of the present invention.

It is an object of the present invention to provide a connection pin having a low contact resistance as a connection pin constituting an electrical path through the inner space of a coil spring.

Another object of the present invention is to provide a connection pin capable of transmitting a large-capacity current as a connection pin constituting an electrical path through the inner space of the coil spring.

A connecting pin according to an aspect of the present invention includes: a first plunger formed through cutting and bending with respect to a metal plate and configured as a single body; a second plunger formed by cutting and bending the metal plate and configured as a single body; and a coil spring supporting the first plunger and the second plunger to apply an elastic force, wherein the first plunger includes a 1-1 sliding plate and a 1-2 sliding plate facing each other, The second plunger is characterized by having a 2-1 sliding plate and a 2-2 sliding plate facing each other.

In the above connection pin, the 2-2 sliding plate is inserted between the 1-1 sliding plate and the 1-2 sliding plate to be in contact with each other, and the 2-1 sliding plate and the 2-2 sliding plate The 1-1 sliding plate is inserted between the sliding plates to perform relative sliding while in contact with each other.

In the above connection pin, the 1-1 sliding plate, the 1-2 sliding plate, the 2-1 sliding plate and the second used for contact between the first plunger and the second plunger -2 The contact surface of the sliding plate is characterized in that it originates from the plane of the metal plate shape, not the cut surface of the metal plate shape.

In the above connection pin, when the second plunger is viewed as a reference, a signal is transmitted through one plane of the 2-1 sliding plate and both planes of the 2-2 sliding plate.

In the above-described connecting pin, the first plunger is configured such that the 1-1 sliding plate and the 1-2 sliding plate are connected to each other through a first body part, and the first plunger is bent through the first body part. -1 so that the sliding plate and the 1-2 sliding plate face each other, and the second plunger is connected to the 2-1 sliding plate and the 2-2 sliding plate with a second body interposed therebetween, By bending the second body part, the 2-1 th sliding plate and the 2-2 th sliding plate are made to face each other.

A connecting pin according to an aspect of the present invention includes: a first plunger formed through processing on a metal plate and configured as a single body; a second plunger formed through processing on a metal plate and composed of a single body; and a coil spring supporting the first plunger and the second plunger to apply an elastic force, wherein the first plunger includes a first sliding plate and a second sliding plate facing each other, and a body portion, and at least the body portion The first sliding plate and the second sliding plate are connected therebetween, and the first sliding plate and the second sliding plate face each other through bending at the body.

In the above connection pin, a first inclined portion is provided between the body portion and the first sliding plate, and is bent in opposite directions on both sides of the first inclined portion, and is disposed between the body portion and the second sliding plate. It has a second inclined portion, characterized in that it is bent in opposite directions on both sides of the second inclined portion.

In the connecting pin, before the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, between the free end of the first sliding plate and the free end of the second sliding plate The gap is smaller than the thickness of the sliding plate of the second plunger.

In the connecting pin, after the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the first sliding plate and the second sliding plate are parallel to each other. Both bending angles are selected in the first inclined portion and the second inclined portion.

In the above-described connecting pin, the body portion is bent to have a 'C' shape in its cross section, the first sliding plate is connected to the upper side of the 'C' shape, and the second sliding plate is the 'C'. It is characterized in that it is connected to the lower side of the ruler.

In the above-described connecting pin, the body portion is bent so that its cross section becomes a 'C' shape, before assembling the first plunger and the second plunger so that the 'C'-shaped inlet gap is narrower than the inner gap. , before the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the interval between the first sliding plate and the second sliding plate on one side in the width direction is at the other side in the width direction It is characterized in that the gap between the first sliding plate and the second sliding plate is narrowed.

In the above connection pin, the first plunger includes a contact portion connected to the body portion opposite to the first sliding plate and the second sliding plate, and the contact portion is for contacting the pad of the PCB and has a pointed tip. It is characterized in that it has a shape.

In the above-described connecting pin, the first plunger has a wing portion connected to one side or both sides of the body portion, and the body portion and the wing portion are bent to have a cylindrical or quadrangular tubular column shape.

In the above connection pin, the first sliding plate and the second sliding plate are configured to be located asymmetrically in the inner space of the coil spring in the width direction.

The connection pin according to an aspect of the present invention has the effect of reducing contact resistance and the like and enabling stable and large-scale transmission and transmission of currents and signals because current and signals are transmitted and transmitted through triple surface contact. In addition, when configuring the first plunger or the second plunger for such triple transmission and delivery, there is an advantage in that parts handling in the manufacturing process is very easy compared to a method of combining or combining a plurality of parts.

In addition, in the connection pin according to an aspect of the present invention, when the sliding plate of a plunger contacts the sliding plate of another plunger, the press-in effect in the width direction (Y direction) together with the press-in effect in the longitudinal direction (X direction) There are advantages to be implemented at the same time.

In addition, the connecting pin according to an aspect of the present invention is configured such that the first sliding plate and the second sliding plate are positioned asymmetrically in the inner space of the coil spring in the width direction, so that the first plunger may have an escape space. It has the effect of ensuring elastic contact between the sliding plate while smoothing the sliding operation between the and the second plunger, and in addition, the contact between the side of the sliding plate and the coil spring is always stable in the inner space of the coil spring, so that the coil spring by grounding (electrical connection) to the plunger to prevent or reduce the parasitic effect of the coil spring.

In addition, the connecting pin according to an aspect of the present invention can form a pointed contact portion on the opposite side at the same time as forming a sliding plate of two lobes for sliding contact between the plunger and the plunger, so that the oxide film and contaminants are penetrated and It has the effect of remarkably reducing the possibility of energization failure because it can penetrate the pads of the PCB with high pressure.

The connecting pin according to an aspect of the present invention can maximize the contact area between the plungers by using an inclined portion connected to the sliding plate and bending, and pinched sliding is implemented while having elastic contact to minimize contact resistance and to be stable It has the advantage of being able to implement the characteristic.

Fig. 1 is a view showing a connecting pin according to a first embodiment of the present invention. Fig. 1 (a) is an exploded view, and Fig. 1 (b) is a view after assembly.
2 is a view showing the first plunger of the connecting pin according to the first embodiment of the present invention, Figure 2 (a) is a developed view before bending, Figure 2 (b) is a side view viewed from one direction, Figure 2 (c) is It is a side view seen from the other direction.
Figure 3 shows a second plunger of the connecting pin according to the first embodiment of the present invention, Figure 3 (a) is a developed view before bending, Figure 3 (b) is a side view viewed from one direction, Figure 3 (c) is It is a side view seen from the other direction.
Figure 4 shows a modified example of the connecting pin according to the first embodiment of the present invention, Figure 4 (a) is a development view before bending the first plunger, Figure 4 (b) is a view of the first plunger from one direction; 4 (c) is a side view of the first plunger viewed from the other direction, FIG. 4 (d) is a developed view of the second plunger before bending, and FIG. 4 (e) is a side view of the second plunger as viewed from one direction. 4(f) is a side view of the second plunger viewed from the other direction.
Figure 5 shows another modified example of the connecting pin according to the first embodiment of the present invention, Figure 5 (a) is a development view before bending the first plunger, Figure 5 (b) is the first plunger in one direction This is a side view, FIG. 5(c) is a side view of the first plunger viewed from the other direction, FIG. 5(d) is a developed view of the second plunger before bending, and FIG. 5(e) is a side view of the second plunger viewed from one direction. Fig. 5(f) is a side view of the second plunger seen from the other direction.
6 is a view showing another modified example of the connecting pin according to the first embodiment of the present invention, FIG. 6 (a) is a developed view before bending the first plunger, and FIG. 6 (b) is the first plunger in one direction. 6 (c) is a side view of the first plunger seen from the other direction, FIG. 6 (d) is a developed view of the second plunger before bending, and FIG. 6 (e) is a side view of the second plunger viewed from one direction and FIG. 6(f) is a side view of the second plunger viewed from the other direction.
Figure 7 is a view showing a connection pin according to a second embodiment of the present invention, Figure 7 (a) is an exploded view, Figure 7 (b) is a view after assembly.
8 is a schematic view conceptually illustrating before and after insertion when there is no inclined portion and no bending.
9 is a schematic view conceptually illustrating before and after insertion when there is an inclined portion and a bent portion.
10 is a view for explaining the advantages of the connecting pin of the present invention. FIG. 10 (a) shows the sliding plate of the second plunger below the body of the first plunger, and FIG. 10 (b) is FIG. It is a cross-sectional view showing the BB cross-section in 10(a).

With reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar names and reference numerals are used for similar parts throughout the specification.

1 is a view showing a connecting pin according to a first embodiment of the present invention, and FIG. 1 (a) is an exploded view, and FIG. 1 (b) is a view after assembly. Figure 2 shows a first plunger of the connecting pin according to the first embodiment of the present invention, Figure 2 (a) is a developed view before bending, Figure 2 (b) is a side view viewed from one direction, Figure 2 (c) is It is a side view seen from the other direction. Figure 3 shows a second plunger of the connecting pin according to the first embodiment of the present invention, Figure 3 (a) is a developed view before bending, Figure 3 (b) is a side view viewed from one direction, Figure 3 (c) is It is a side view seen from the other direction.

The connecting pin according to the first embodiment of the present invention is configured to include a first plunger 10 , a second plunger 20 and a coil spring 30 . For example, the connection pins are embedded in an array in a test socket or a mounting socket of a semiconductor device to form an electrical path stably while buffering a minute height difference between a terminal of a semiconductor device and a pad of a PCB.

The first plunger 10 is formed through a machining process including cutting, bending, coining, etc. for a metal plate, and each component of the first plunger 10 is derived from a metal plate, and the first The plunger 10 is constructed as a single body. That is, all the elements constituting the first plunger 10 are connected to each other as one body.

Similarly to the first plunger 10, the second plunger 20 is also formed through a machining process including cutting, bending, coining, etc. for a metal plate, and each component of the second plunger 20 is made of metal. As derived from the plate material, the second plunger 20 is constructed as a single body. That is, all the elements constituting the second plunger 20 are connected to each other as one body.

The coil spring 30 provides elastic force by supporting the first and second plungers, and serves to elastically support external compression applied to both ends of the first and second plungers. The first plunger and the second plunger are in contact with each other through the inner space of the coil spring, and a firm contact is ensured while allowing relative movement between the first plunger and the second plunger within a predetermined distance.

The first plunger includes a two-lobed sliding plate composed of a 1-1 sliding plate 11 and a 1-2 sliding plate 12, a body 13, a first inclined portion 16, and a second inclined plate. It is configured to include a portion 17 , hook portions 18a and 18b , stoppers 19a and 19b , wing portions 14a and 14b , and a contact portion 15 . Elements constituting the first plunger are divided as described above for convenience of description, but since they are all integrally configured, boundaries or divisions between each other may not be clear.

The second plunger includes a two-lobed sliding plate composed of a 2-1 sliding plate 21 and a 2-2 sliding plate 22, a body 23, a first slope 26, and a second slope. It is configured to include a portion 27 , hook portions 28a and 28b , stoppers 29a and 29b , wing portions 24a and 24b , and a contact portion 25 . Elements constituting the second plunger are divided as described above for convenience of description, but since they are all integrally configured, the boundary or division between each other may not be clear.

The 1-1 sliding plate 11 and the 1-2 sliding plate 12 face each other with a slight gap, and each sliding plate is a substantially bar-shaped plate derived from a metal plate. The 2-2 sliding plate 22 of the second plunger is inserted between the 1-1 sliding plate 11 and the 1-2 sliding plate 12 to be in contact with each other, and relative sliding is possible while in contact with each other Do.

The 2-1 sliding plate 21 and the 2-2 sliding plate 22 face each other with a slight distance, and each sliding plate is a substantially bar-shaped plate derived from a metal plate. The 1-1 sliding plate 11 of the first plunger is inserted between the 2-1 sliding plate 21 and the 2-2 sliding plate 22 to be in contact with each other, and relative sliding is possible while in contact with each other Do.

The two-lobed sliding plate constituted by the first plunger and the two-lobe sliding plate constituted by the second plunger are intersected while being sandwiched in a zigzag and appear to be stacked. When positioning in a zigzag manner, the 2-2 sliding plate 22 of the second plunger is inserted between the 1-1 sliding plate 11 and the 1-2 sliding plate 12 in the above, but the second plunger Of the 2-1 sliding plate 21 may be inserted, and changing the order in this way is, of course, included in the scope of equality.

The 1-1 sliding plate 11, the 1-2 sliding plate 12, the 2-1 sliding plate 21 and the 2-2 sliding plate used for contact between the first plunger and the second plunger are used. The contact surface in (22) originates from the plane of the metal plate shape, not the cut surface of the metal plate shape. Therefore, it is possible to have a wide and flat plane, and by using this, it is possible to configure a mutual contact area.

When the first plunger is viewed as a reference, a signal is transmitted through two planes on both sides of the 1-1 sliding plate and one plane of the 1-2 sliding plate. And when the second plunger is viewed as a reference, a signal is transmitted through one plane of the 2-1 sliding plate and two planes of both sides of the 2-2 sliding plate.

Therefore, a large-scale expansion of the contact area is possible, and since the current (signal) is transmitted and transmitted in three planes using three planes, the contact resistance is reduced, and the stable transmission and transmission of the current (signal) is effective. In addition, when configuring the first plunger or the second plunger for such triple transmission and delivery, there is an advantage in that parts handling in the manufacturing process is very easy compared to a method of combining or combining a plurality of parts. Assuming that the 1-1 sliding plate and the 1-2 sliding plate of the first plunger are separated from each other, handling of parts during the manufacturing process becomes more difficult.

The first body 13 constitutes the body of the first plunger 10 , and the 1-1 sliding plate 11 and the 1-2 sliding plate 12 are interposed with the first body 13 interposed therebetween. are integrally connected to each other. The 1-1 sliding plate 11 is connected to the first body part 13 via the first inclined part 16, and the 1-2 sliding plate 12 is restarted by the second inclined part 17. It is connected to the first body (13).

The first body 13 is bent at a plurality of bending lines d1, and includes the first body 13 and the wing portions 14a and 14b to have a substantially quadrangular tubular column shape. Alternatively, the first body portion 13 and the wing portions 14a and 14b may have a substantially cylindrical column shape by being bent to have a curvature without a clear bending line. Such a square or cylindrical column helps to maintain and guide the posture of the connecting pin in an upright state within the through hole of the socket when it is configured in a socket or the like.

The 1-1 sliding plate 11 and the 1-2 sliding plate 12 are connected to each other with the first body 13 interposed therebetween to maintain a relative posture with each other, and The 1-1 sliding plate 11 and the 1-2 sliding plate are made to face each other through bending (including both bending with a clear bending line and bending with curvature).

The second body part 23 is also configured similarly to the first body part 13 . More specifically, the second body 23 constitutes the body of the second plunger 20, and the second body 23 is interposed between the 2-1 sliding plate 21 and the 2-2 sliding plate. The plates 22 are integrally connected to each other. The 2-1 sliding plate 21 is connected to the second body part 23 via the second inclined part 26, and the 2-2 sliding plate 22 is restarted by the second inclined part 27. It is connected to the first body (13).

The second body 23 is bent at a plurality of bending lines d2, and has a substantially quadrangular tubular column shape including the second body 23 and the wing portions 24a and 24b. Alternatively, the second body portion 23 and the wing portions 24a and 24b may have a substantially cylindrical column shape by being bent to have a curvature without a clear bending line. Such a square or cylindrical column helps to maintain and guide the posture of the connecting pin in an upright state within the through hole of the socket when it is configured in a socket or the like.

The 2-1 sliding plate 21 and the 2-2 sliding plate 22 are connected to each other with the second body 23 interposed therebetween to maintain a relative posture with each other, and Through bending (including both bending with a clear bending line and bending having a curvature), the 2-1 sliding plate 21 and the 2-2 sliding plate are made to face each other.

In the first plunger and the second plunger, the wing portions 14a, 14b, 24a, 24b are connected to one side or both sides of the first body portion or the second body portion. In the case of being configured on both sides of the first body part, the two wing parts after bending can be made to have a certain distance (same as S in FIG. 7) or to be in contact with each other. can control Alternatively, when the wing part is configured on one side of the first body part, the gap between the two sliding plates is controlled by using the width of the wing part to have a certain distance between the wing part and the body part after bending, or to be in contact with each other. can do.

In the first plunger and the second plunger, the contact portions 15 and 25 extend from the body and are connected to each other and are for electrical contact with the outside, and may have a crown shape, a mountain shape, a cylindrical shape, a bar shape, etc. A suitable shape can be selected. The hook portions 18a, 18b, 28a, and 28b protrude to the outside of the sliding plate, and when assembling with the coil spring 30, the end of the coil spring has a slope that makes it easy to enter. has a chin to prevent The stoppers 19a, 19b, 29a, and 29b protrude larger than the outer diameters of the body parts 13 and 23, so that when the connecting pin is mounted on the through hole of the socket, it is caught on the jaws provided at both ends of the through hole.

In the first plunger (10), a first inclined portion (16) is provided between the first body portion (13) and the 1-1 sliding plate (11), but opposite to each other on both sides of the first inclined portion (16) direction, provided with a second inclined portion 17 between the first body portion 13 and the 1-2 sliding plate 12, but bent in opposite directions on both sides of the second inclined portion 17 has been Two sliding plates are formed extending from the first body through two inclined portions, and the gap between the two sliding plates is narrowed by using the inclined portions to increase the contact area.

8 and 9 are schematic diagrams conceptually illustrating a case in which there is no inclined part and bending and a case in which there is an inclined part and bending.

When the plunger does not have an inclined portion or a bent portion, there is a problem in that a gap (refer to A of FIG. 8 ) is generated as shown in FIG. 8 , so that the contact area is relatively small. On the other hand, in the case of bending with the inclined portions 6 and 7 connected to the sliding plate as shown in FIG. 9 , the contact area can be maximized and pinched sliding is implemented while having elastic contact to minimize contact resistance and provide stable characteristics. It has the advantage of being able to implement 8 and 9 show a structure in which one plunger has two lobes sliding plates and the other plunger has a single lobe sliding plate as in the second embodiment to be described later, but as in the first embodiment, both In the case of a structure having a sliding plate of two lobes, the above-mentioned differential advantage is further deepened.

Figure 4 shows a modified example of the connecting pin according to the first embodiment of the present invention, Figure 4 (a) is a developed view before bending the first plunger, Figure 4 (b) is a view of the first plunger from one direction; 4 (c) is a side view of the first plunger viewed from the other direction, FIG. 4 (d) is a developed view of the second plunger before bending, and FIG. 4 (e) is a side view of the second plunger viewed from one direction, FIG. 4(f) is a side view of the second plunger viewed from the other direction.

In the above modification, in the first plunger, before the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the distance between the free end of the first sliding plate and the free end of the second sliding plate is 2 It is characterized in that it is smaller than the thickness of the sliding plate of the plunger. In addition, in the second plunger, before the sliding plate of the first plunger is inserted between the first sliding plate and the second sliding plate, the distance between the free end of the first sliding plate and the free end of the second sliding plate is the first plunger. It is characterized in that it is smaller than the thickness of the sliding plate.

And, in the first plunger, after the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the first sliding plate and the second sliding plate are parallel to each other as shown in FIG. 9(b). The bending angles of both sides of the first inclined portion and the second inclined portion are selected so as to be possible. Also, in the second plunger, after the sliding plate of the first plunger is inserted between the first sliding plate and the second sliding plate, the first sliding plate and the second sliding plate are parallel to each other as shown in FIG. 9(b). Both bending angles are selected in the first inclined portion and the second inclined portion.

FIG. 10 is a view for explaining the advantages of the connecting pin of the present invention, and FIG. 10(a) is below the body of the first plunger (that is, including the inclined portion and the sliding plate) and the sliding plate of the second plunger. is shown, and FIG. 10(b) is a cross-sectional view taken along the line B-B in FIG. 10(a).

In the present invention, looking at the body part 13 except for the wing parts 14a and 14b, the body part 13 is bent so that its cross-section becomes a 'C' shape, and the first sliding plate 11 of the first plunger ) is connected to the upper side of the 'C' shape, and the second sliding plate 12 of the first plunger is connected to the lower side of the 'C' shape.

The body 13 is bent so that its cross section becomes a 'C' shape, before assembling the first plunger and the second plunger so that the 'C'-shaped inlet gap (S1) is narrower than the inner gap (S2). , before the sliding plate 41 of the second plunger is inserted between the first sliding plate 11 and the second sliding plate 12, the gap between the first sliding plate and the second sliding plate at one side in the width direction (S3) ) is narrower than the interval S4 between the first sliding plate 11 and the second sliding plate 12 on the other side in the width direction. Accordingly, when viewed in the width direction, the first sliding plate is inclined at an angle C relative to the second sliding plate.

Before assembling the first plunger and the second plunger, the 'C'-shaped inlet gap (S1) is smaller than the thickness of the sliding plate 41 of the second plunger to be inserted, and when inserted, the first sliding plate 11 and the second The sliding plate 12 has an effect of ensuring contact by generating elasticity in the process of being inserted and opened while spreading between the sliding plates 12 . Thereby, it has the press-fitting effect in the width direction (Y direction).

According to the present invention, the press-fitting effect in the longitudinal direction (X direction) is basically provided by the sliding plate of two leaves extending in the longitudinal direction, and the present invention provides a press-fitting effect in the longitudinal direction and the width direction (Y direction) together with the press-fitting effect in the longitudinal direction. ) has the advantage of being able to implement the press-fitting effect at the same time.

Figure 5 shows another modified example of the connecting pin according to the first embodiment of the present invention, Figure 5 (a) is a developed view before bending the first plunger, Figure 5 (b) is the first plunger in one direction This is a side view, FIG. 5 (c) is a side view of the first plunger viewed from the other direction, FIG. 5 (d) is a developed view of the second plunger before bending, and FIG. 5 (e) is a side view of the second plunger viewed from one direction. Fig. 5(f) is a side view of the second plunger seen from the other direction.

In another modified example of the connecting pin according to the first embodiment of the present invention, the stoppers 19c, 19d, 29c, and 29d extend toward the hook portions 18c, 18d, 28c, and 28d, and a hook groove ( 51c, 51d, 52c, 52d) are formed. The end of the coil spring is seated in the hanger groove, and the hanger prevents the coil spring from being separated in the direction of the sliding plate. Prevents deviation in the direction of the contact part.

6 is a view showing another modified example of the connecting pin according to the first embodiment of the present invention, FIG. 6 (a) is an exploded view of the first plunger before bending, and FIG. 6 (b) is the first plunger in one direction. 6(c) is a side view of the first plunger seen from the other direction, FIG. 6(d) is a developed view of the second plunger before bending, and FIG. 6(e) is a side view of the second plunger viewed from one direction and FIG. 6(f) is a side view of the second plunger viewed from the other direction.

In the width direction of the first sliding plate and the second sliding plate, the distance W1 from the center line of the connecting pin including the body and the contact portion to the vertical side of one side and the distance W2 from the vertical side of the other side are mutually make it different As shown, the sliding plate is located eccentrically with respect to the center of the connecting pin. Therefore, when the sliding plate is positioned in the inner space of the coil spring, one side vertical side of each sliding plate is in contact with the coil spring, but the other side vertical side is spaced apart from the case where the body portion is aligned at the center of the coil spring.

The first sliding plate and the second sliding plate are configured to be located asymmetrically in the inner space of the coil spring in the width direction, so that they can have an escape space and slide while smoothing the sliding operation between the first plunger and the second plunger. It has the effect of ensuring elastic contact between the plates, and the side of the sliding plate and the coil spring can always be in contact in the inner space of the coil spring. prevent or reduce

7 is a view showing a connecting pin according to a second embodiment of the present invention. FIG. 7 (a) is an exploded view and FIG. 7 (b) is a view after assembly.

The connecting pin according to the second embodiment of the present invention is different from the first embodiment in that the second plunger 40 has a single sliding plate 41 . However, the first plunger 10 has a sliding plate of two lobes, similar to the first embodiment.

Similar to the first plunger or the second plunger of the first embodiment, the first plunger 10 is configured with a contact portion connected to the body portion opposite to the first sliding plate and the second sliding plate, and this contact portion is a pad of the PCB. It is characterized in that it has a pointed shape as for contacting the.

The pad of the PCB may have an oxide film formed on the surface or may be covered with contaminants. In this case, poor conduction may occur. Conventionally, the two-lobed sliding plate for sliding contact between the plunger and the plunger and the pointed contact part could not be configured together in a single plunger. However, according to the structure according to an embodiment of the present invention, it is possible to simultaneously form a pointed contact portion on the opposite side together with the configuration of the two-lobed sliding plate for sliding contact between the plunger and the plunger, thereby preventing the oxide film and contaminants. It has the effect of remarkably reducing the possibility of energization failure because it can penetrate through the pads of the PCB with high pressure.

In the above, the embodiment and the modified example have been described separately, but the features shown in one embodiment may be similarly applied to other embodiments. Also, features shown in one plunger may be similarly applied to other plungers of the same embodiment or plungers of other embodiments.

10: first plunger 11, 12: sliding plate
13: body part 14a, 14b: wing part
15: contact part 16, 17: inclined part
18a, 18b: gulgae part 19a, 19b: stopper
20: second plunger 21, 22: sliding plate
23: body part 4a, 24b: wing part
25: contact part 26,27: inclined part
28a, 28b: hanger part 29a, 29b: stopper
30: coil spring 40: second plunger

Claims (14)

In the connection pin,
a first plunger formed through cutting and bending with respect to a metal plate and composed of a single body;
a second plunger formed by cutting and bending the metal plate and configured as a single body;
and a coil spring supporting the first plunger and the second plunger to provide an elastic force.
The first plunger includes a 1-1 sliding plate and a 1-2 sliding plate facing each other, and the second plunger includes a 2-1 sliding plate and a 2-2 sliding plate facing each other. characterized,
connecting pin. The method according to claim 1,
The 2-2 sliding plate is inserted between the 1-1 sliding plate and the 1-2 sliding plate to be in contact with each other, and the first sliding plate is disposed between the 2-1 sliding plate and the 2-2 sliding plate. -1 characterized in that the sliding plate is inserted to perform relative sliding while in contact with each other,
connecting pin. 3. The method according to claim 2,
The contact surfaces of the 1-1 sliding plate, the 1-2 sliding plate, the 2-1 sliding plate and the 2-2 sliding plate used for contact between the first plunger and the second plunger are It is characterized in that it originates from the plane of the metal plate shape, not the cut surface of the metal plate shape.
connecting pin. 3. The method according to claim 2,
Based on the second plunger, the signal is transmitted through one plane of the 2-1 sliding plate and both planes of the 2-2 sliding plate,
connecting pin. The method according to claim 1,
The first plunger includes the 1-1 sliding plate and the 1-2 sliding plate connected to each other through a first body part, and the 1-1 sliding plate and the second sliding plate are connected to each other through bending at the first body part. 1-2 Make sure that the sliding plates face each other,
The second plunger includes the 2-1 sliding plate and the 2-2 sliding plate connected to each other via a second body part, and the 2-1 sliding plate and the second sliding plate are bent at the second body part. 2-2 to make the sliding plates face each other,
connecting pin. In the connection pin,
a first plunger formed through processing on a metal plate and composed of a single body;
a second plunger formed through processing on a metal plate and composed of a single body;
and a coil spring supporting the first plunger and the second plunger to provide an elastic force.
The first plunger includes a first sliding plate and a second sliding plate facing each other, and a body,
The first sliding plate and the second sliding plate are connected to each other through at least the body part, and the first sliding plate and the second sliding plate are made to face each other through bending at the body part. doing,
connecting pin. 7. The method of claim 6,
A first inclined portion is provided between the body portion and the first sliding plate, and is bent in opposite directions on both sides of the first inclined portion,
A second inclined portion is provided between the body portion and the second sliding plate, and the second inclined portion is bent in opposite directions at both sides of the second inclined portion.
connecting pin. 8. The method of claim 7,
Before the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the distance between the free end of the first sliding plate and the free end of the second sliding plate is characterized in that it is smaller than the thickness of the sliding plate,
connecting pin. 9. The method of claim 8,
After the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the first inclined portion and the second sliding plate are parallel to each other so that the first sliding plate and the second sliding plate are parallel to each other In the inclined part, the bending angles of both sides are selected,
connecting pin. 7. The method of claim 6,
The body portion is bent so that its cross-section is 'U'-shaped,
The first sliding plate is connected to the upper side of the 'C' shape, and the second sliding plate is connected to the lower side of the 'C' shape,
connecting pin. 11. The method of claim 10,
By bending the body portion so that its cross section becomes a 'C' shape, the inlet gap of the 'C' shape before assembling the first plunger and the second plunger is narrower than the inner gap,
Before the sliding plate of the second plunger is inserted between the first sliding plate and the second sliding plate, the interval between the first sliding plate and the second sliding plate on one side in the width direction is characterized in that the gap between the first sliding plate and the second sliding plate is narrowed,
connecting pin. 11. The method according to claim 6 or 10,
The first plunger,
a contact portion connected to the body portion opposite to the first sliding plate and the second sliding plate is configured;
The contact portion is for contacting the pad of the PCB, characterized in that it has a pointed shape,
connecting pin. 11. The method according to claim 6 or 10,
The first plunger is configured with a wing portion connected to one side or both sides of the body portion,
The body portion and the wing portion is bent to have a cylindrical or quadrangular tubular column shape,
connecting pin. 11. The method according to claim 6 or 10,
The first sliding plate and the second sliding plate are configured to be located asymmetrically in the inner space of the coil spring in the width direction,
connecting pin.

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