KR102810975B1 - Spring Probe Pin Havimg Multi-Fingers - Google Patents

Abstract

A spring probe pin having multi-finger according to one aspect of the present invention comprises: a first probe (10, 60) having a first bridge (B1, B5) formed on one side and a first external contact portion (18, 68) formed on the other side; a second probe (20, 40, 50, 70) having a second bridge (B2, B3, B4, B6) formed on one side and a second external contact portion (28, 48, 58, 78) formed on the other side; And a coil spring (30) that elastically supports the first probe (10,60) and the second probe (20,40,50,70) while the first bridge (B1, B5) and the second bridge (B2, B3, B4, B6) are inserted, wherein the first bridge (B1, B5) and the second bridge (B2, B3, B4, B6) are in contact with each other in a slidable spring probe pin, wherein the first bridge (B1, B5) comprises a first finger group (11, 61) in which a plurality of fingers (f1, f5) extending in a rod shape are arranged in parallel; A plurality of fingers (f2, f6) extending in a rod shape are arranged in parallel and a second finger group (12, 62) is arranged spaced apart from the first finger group (11, 61); characterized in that each finger of the first finger group (11, 61) contacts the second bridge (B2, B3, B4, B6) respectively and each finger of the second finger group (12, 62) contacts the second bridge (B2, B3, B4, B6) respectively, thereby transmitting an electric signal between the first probe and the second probe.

Description

Spring Probe Pin Havimg Multi-Fingers

The present invention relates to a spring probe pin.

The patent document is a prior application by the inventor of the present application, and discloses a spring probe pin of an inner bridge type. The spring probe pin according to the patent document has a first connecting leg portion and a second connecting leg portion that slide in contact with each other within a coil spring, so it is more stable than an electrical connection through a conventional barrel (outer tube) and has the advantage of being able to reduce the outer diameter of the spring probe pin.

However, in order to reduce the contact resistance between the first connecting bridge and the second connecting bridge, it is theoretically better for the first connecting bridge and the second connecting bridge to make surface contact. However, in some cases, it may be difficult for the first connecting bridge and the second connecting bridge to be parallel, so in reality, there are many cases where line contact or point contact occurs.

In such cases, the contact resistance through the spring probe pin increases, and in high current applications, sparks may be generated, which may damage the spring probe pin or lead to serious contact failure. A spring probe pin that can implement high current, high voltage, and low resistance is required.

Republic of Korea Patent No. 10-1525120, registered on May 27, 2015

An object of the present invention is to provide a spring probe pin capable of ensuring stable contact.

In particular, an object of the present invention is to provide a spring probe pin that can operate stably in high current applications.

A spring probe pin having multi-finger according to one aspect of the present invention comprises: a first probe (10, 60) having a first bridge (B1, B5) formed on one side and a first external contact portion (18, 68) formed on the other side; a second probe (20, 40, 50, 70) having a second bridge (B2, B3, B4, B6) formed on one side and a second external contact portion (28, 48, 58, 78) formed on the other side; And the coil spring (30) that elastically supports the first probe (10,60) and the second probe (20,40,50,70) while the first bridge (B1,B5) and the second bridge (B2,B3,B4,B6) are inserted, and the first bridge (B1,B5) and the second bridge (B2,B3,B4,B6) are in contact with each other in the slidable spring probe pin,

The above first bridge (B1, B5) includes a first finger group (11, 61) in which a plurality of fingers (f1, f5) extending in a rod shape are arranged in parallel; a second finger group (12, 62) in which a plurality of fingers (f2, f6) extending in a rod shape are arranged in parallel and spaced apart from the first finger group (11, 61); and each finger of the first finger group (11, 61) contacts the second bridge (B2, B3, B4, B6) respectively, and each finger of the second finger group (12, 62) contacts the second bridge (B2, B3, B4, B6) respectively, so as to transmit an electric signal between the first probe and the second probe.

In the spring probe pin having the above-described multi-fingers, the second bridge (B2) includes a third finger group (21) in which a plurality of fingers (f3) extending in a rod shape are arranged in parallel; a fourth finger group (22) in which a plurality of fingers (f4) extending in a rod shape are arranged in parallel and spaced apart from the third finger group (21); and each finger of the first finger group (11) contacts a corresponding finger of the third finger group (21), and each finger of the second finger group (12) contacts a corresponding finger of the fourth finger group (22), so that an electric signal can be transmitted between the first probe and the second probe.

In the spring probe pin having the above-described multi-fingers, the first finger group (11) contacts the inner surface of the third finger group (21), the second finger group (12) contacts the inner surface of the fourth finger group (22), and before the first bridge (B1) and the second bridge (B2) are assembled, the first finger group (11) and the second finger group (12) may be spaced further apart at the free end than the fixed end, or the third finger group (21) and the fourth finger group (22) may be spaced further apart at the fixed end than the free end.

In the spring probe pin having the above multi-fingers, a first hook (a1) and a second hook (a2) protruding outwardly are respectively formed at the tips of each finger in the first finger group (11) and the second finger group (12), and a third hook (a3) and a fourth hook (a4) protruding inwardly are respectively formed at the tips of each finger in the third finger group (21) and the fourth finger group (22), and after assembly, the first hook (a1) and the third hook (a3) are caught with each other, and the second hook (a2) and the fourth hook (a4) are caught with each other, so that separation between the first probe (10) and the second probe (20) can be prevented.

In the spring probe pin having the above-described multi-fingers, the second bridge (B3, B4, B6) includes a first plate bar (41, 51, 71) having a straight band shape; a second plate bar (42, 52, 72) having a straight band shape and spaced apart from and facing the first plate bar (41, 51, 71); and all fingers of the first finger group (11, 61) contact the first plate bar (41, 51, 71) respectively, and all fingers of the second finger group (12, 62) contact the second plate bar (42, 52, 72) respectively, so that an electric signal can be transmitted between the first probe and the second probe.

In the spring probe pin having the above-described multi-fingers, the first finger group (11, 61) contacts the inner surface of the first plate bar (41, 51, 71), the second finger group (12, 62) contacts the inner surface of the second plate bar (42, 52, 72), and before the first bridge (B1, B5) and the second bridge (B3, B4, B6) are assembled, the first finger group (11, 61) and the second finger group (12, 62) may be spaced further apart at the free end than the fixed end, or the first plate bar (41, 51, 71) and the second plate bar (42, 52, 72) may be spaced further apart at the fixed end than the free end.

In the spring probe pin having the above-described multi-fingers, a first hook (a1) and a second hook (a2) protruding outwardly are respectively formed at the tips of each finger in the first finger group (11) and the second finger group (12), and a fifth hook (a5, a7) and a sixth hook (a6, a8) protruding inwardly are formed at the tips of the first plate bar (41, 51) and the second plate bar (42, 52), and after assembly, the first hook (a1) and the fifth hook (a5, a7) are caught with each other, and the second hook (a2) and the sixth hook (a6, a8) are caught with each other, so that separation between the first probe (10) and the second probe (20) can be prevented.

In the spring probe pin having the above-described multi-fingers, a first guide dam (b1) that guides the sliding of the first hook (a1) in the first finger group (11) may be protruded from the back surface of the first plate bar (51), and a second guide dam (b2) that guides the sliding of the second hook (a2) in the second finger group (12) may be protruded from the back surface of the second plate bar (52).

In the spring probe pin having the above-described multi-finger, the first probe (60) may be provided with a first hook (63a, 64a) that protrudes between the first bridge (B5) and the first external contact portion (68) to have an outer diameter larger than the inner diameter of the coil spring (30) and hooks one end of the coil spring (30), and the second probe (70) may be provided with a second hook (73a, 74a) that protrudes between the second bridge (B6) and the second external contact portion (78) to have an outer diameter larger than the inner diameter of the coil spring (30) and hooks the other end of the coil spring (30).

According to a spring probe pin equipped with multi-fingers according to one aspect of the present invention, stable contact can be ensured because contact is made at multiple points between bridges.

According to a spring probe pin having multi-fingers according to one aspect of the present invention, since contact is made at multiple points between bridges, there is an effect that stable operation can be achieved even in high-current applications.

According to one aspect of the present invention, a spring probe pin having multi-fingers has the advantage of being able to implement high current, high voltage, and low resistance.

FIGS. 1 to 3 are drawings showing a spring probe pin with a multi-finger according to a first embodiment of the present invention when in a coupled state, wherein FIG. 1(a) is a front view, FIG. 1(b) is an exploded perspective view, FIG. 2(a) is a front view after the coil spring is removed, FIG. 2(b) is a perspective view after the coil spring is removed, and FIG. 3 is a perspective view showing the first probe.
FIGS. 4 to 6 are drawings showing a spring probe pin with a multi-finger according to a second embodiment of the present invention when in a coupled state, wherein FIG. 4(a) is a front view and FIG. 4(b) is an exploded perspective view, FIG. 5(a) is a front view after the coil spring is removed and FIG. 5(b) is a perspective view after the coil spring is removed, and FIG. 6 is a perspective view showing a second probe.
FIGS. 7 to 9 are drawings showing a spring probe pin with a multi-finger according to a third embodiment of the present invention when in a coupled state, wherein FIG. 7(a) is a front view, FIG. 7(b) is an exploded perspective view, FIG. 8(a) is a front view after the coil spring is removed, FIG. 8(b) is a perspective view after the coil spring is removed, FIG. 9(a) is a cross-sectional perspective view of a second probe, and FIG. 9(b) is a perspective view showing the second probe.
FIGS. 10 and 11 are drawings showing a spring probe pin with a multi-finger according to a fourth embodiment of the present invention when in a coupled state, wherein FIG. 10(a) is a front view and FIG. 10(b) is an exploded perspective view, FIG. 11(a) is a front view after the coil spring is removed and FIG. 11(b) is a perspective view after the coil spring is removed, and FIG. 12 is a perspective view showing the first probe and the second probe.

Referring to FIGS. 1 to 12, the spring probe pins in the first, second, third and fourth embodiments of the present invention all include a first probe (10, 60) having a first bridge (B1, B5) formed on one side and a first external contact portion (18, 68) formed on the other side; a second probe (20, 40, 50, 70) having a second bridge (B2, B3, B4, B6) formed on one side and a second external contact portion (28, 48, 58, 78) formed on the other side; And it includes a coil spring (30) that elastically supports the first probe (10, 60) and the second probe (20, 40, 50, 70) while the first bridge (B1, B5) and the second bridge (B2, B3, B4, B6) are inserted, and the first bridge (B1, B5) and the second bridge (B2, B3, B4, B6) are slidable while in contact with each other.

The first probe (10,60) is composed of a first bridge (B1,B5), a first merging portion (13,14,63,64), a first stopper (15,16,65,66), a first extension portion (17,67), and a first external contact portion (18,68).

The first bridge (B1, B5) includes a first finger group (11, 61) in which a plurality of fingers (f1, f5) extending in a rod shape are arranged in parallel; a second finger group (12, 62) in which a plurality of fingers (f2, f6) extending in a rod shape are arranged in parallel and spaced apart from the first finger group (11, 61), and each finger of the first finger group (11, 61) contacts the second bridge (B2, B3, B4, B6) respectively, and each finger of the second finger group (12, 62) contacts the second bridge (B2, B3, B4, B6) respectively, thereby transmitting an electric signal through a plurality of points between the first probe and the second probe.

The fingers of the first finger group are arranged in parallel with equal spacing on the first plane, and the fingers of the second finger group are also arranged in parallel with equal spacing on the second plane. The length, width, and shape of the fingers are all the same.

In the embodiments, each of the first bridges has ten fingers, and during the operation of the spring probe pin, each finger independently contacts the second bridge. Therefore, even if the posture of each finger is slightly different, or the height, position, or tilting angle at which the tip contacts the second bridge is different, the point of forming contact with the second bridge is the same.

In this case, there is an effect of ensuring stable contact by forming point contact or line contact at a large number of points (10 in the embodiment) compared to conventional technology.

The first merging portion (13, 14, 63, 64) is a portion where the fingers of the finger groups are gathered and merged, and serves as the base portion of the fingers. The first stopper (15, 16, 65, 66) has a width wider than the width of the first merging portion, but is larger than the inner diameter of the coil spring (30), so as to prevent one end of the coil spring from falling out in the direction of the extension portion (17, 67) and the first external contact portion (18, 68).

The first extension (17, 67) is connected to the first stopper (15, 16, 65, 66) and has a rectangular cross-section and extends in the longitudinal direction. The first external contact portion (18, 68) is connected to the tip of the first extension (17, 67) and is a portion that makes electrical contact with the outside, and may have various shapes such as a pointed shape, a crown shape, and a flat shape.

The first probe (10,60) can be formed by progressive stamping, including punching, bending, and coining of a metal flat plate.

The second probe (20, 40, 50, 70) is composed of a second bridge (B2, B3, B4, B6), a second merging portion (23, 24), a second stopper (25, 26, 45, 46, 55, 56, 75, 75), a second extension portion (27, 47, 57, 77) and a second external contact portion (28, 48, 58, 78).

The second merging portion (23, 24) is a portion where the fingers of the finger groups are gathered and merged, and serves as the base portion of the fingers. The second stopper (25, 26, 45, 46, 55, 56, 75, 75) has a width wider than the width of the second merging portion or the second bridge, but larger than the inner diameter of the coil spring (30), so as to prevent the other end of the coil spring from falling in the direction of the second extension portion (27, 47, 57, 77) and the second external contact portion (28, 48, 58, 78).

The second extension portion (27, 47, 57, 77) is connected to the second stopper (25, 26, 45, 46, 55, 56, 75, 75) and extends in the longitudinal direction as a cylinder with a square cross-section. The second external contact portion (28, 48, 58, 78) is connected to the tip of the second extension portion (27, 47, 57, 77) and is a portion that makes electrical contact with the outside, and may have various shapes such as a pointed shape, a crown shape, and a flat shape.

The second probe (20, 40, 50, 70) can be formed by progressive stamping, including punching, bending, and coining of a metal flat plate.

Referring to FIGS. 1 to 3, in the spring probe pin having multi-fingers of the first embodiment, the second bridge (B2) includes a third finger group (21) in which a plurality of fingers (f3) extending in a rod shape are arranged in parallel; a fourth finger group (22) in which a plurality of fingers (f4) extending in a rod shape are arranged in parallel and spaced apart from the third finger group (21), and each finger of the first finger group (11) contacts a corresponding finger of the third finger group (21), and each finger of the second finger group (12) contacts a corresponding finger of the fourth finger group (22), thereby transmitting an electric signal between the first probe and the second probe.

The fingers of the third finger group are arranged parallel and equally spaced on the third plane, and the fingers of the fourth finger group are also arranged parallel and equally spaced on the fourth plane. The length, width, and shape of the fingers are all the same.

And, the first finger group (11) contacts the inner surface of the third finger group (21), and the second finger group (12) contacts the inner surface of the fourth finger group (22) (hereinafter, the surface closer to the central axis of the spring probe pin among the two sides is called the 'inner surface' and the surface farther from the central axis of the spring probe pin is called the 'outer surface'), and before the first bridge (B1) and the second bridge (B2) are assembled, the first finger group (11) and the second finger group (12) are spaced further apart at the free end than at the fixed end, or the third finger group (21) and the fourth finger group (22) are spaced further apart at the fixed end than at the free end.

In the first finger group (11) and the second finger group (12), a first hook (a1) and a second hook (a2) having an outwardly protruding shape are respectively formed at the tip of each finger, and in the third finger group (21) and the fourth finger group (22), a third hook (a3) and a fourth hook (a4) having an inwardly protruding shape are respectively formed at the tip of each finger, and after assembly, the first hook (a1) and the third hook (a3) are hooked to each other, and the second hook (a2) and the fourth hook (a4) are hooked to each other, thereby preventing separation between the first probe (10) and the second probe (20). In other words, the first probe (10) and the second probe (20) are prevented from being separated from each other.

Referring to FIGS. 4 to 12, the second, third and fourth embodiments of the present invention will be described. The second bridge (B3, B4, B6) includes a first plate bar (41, 51, 71) having a straight band shape; a second plate bar (42, 52, 72) having a straight band shape and spaced apart in parallel and facing the first plate bar (41, 51, 71), and all fingers of the first finger group (11, 61) contact the first plate bar (41, 51, 71) respectively, and all fingers of the second finger group (12, 62) contact the second plate bar (42, 52, 72) respectively, thereby transmitting an electric signal between the first probe and the second probe.

In order to achieve stronger elastic contact between the first bridge and the second bridge, it is better for the coil spring to tighten the second bridge to some extent. However, in the first embodiment, since the fingers coming into contact with the coil spring are limited to the side fingers (four fingers) among the fingers of the third and fourth finger groups, there is a disadvantage in that the tightening force of the coil spring is limited only to the size fingers. In contrast, in the second, third and fourth embodiments, the first plate bar (41, 51, 71) and the second plate bar (41, 51, 71) come into contact with the coil spring as a whole, which is advantageous in this respect. In addition, in the second bridge, it is advantageous in terms of rigidity to have the plate bar rather than to have it divided into several fingers.

The first finger group (11, 61) contacts the inner surface of the first plate bar (41, 51, 71), and the second finger group (12, 62) contacts the inner surface of the second plate bar (42, 52, 72). Before the first bridge (B1, B5) and the second bridge (B3, B4, B6) are assembled, the first finger group (11, 61) and the second finger group (12, 62) are spaced further apart at the free end than the fixed end, or the first plate bar (41, 51, 71) and the second plate bar (42, 52, 72) are spaced further apart at the fixed end than the free end.

In the first finger group (11) and the second finger group (12), a first hook (a1) and a second hook (a2) having an outwardly protruding shape are respectively formed at the tips of each finger, and a fifth hook (a5, a7) and a sixth hook (a6, a8) having an inwardly protruding shape are formed at the tips of the first plate bar (41, 51) and the second plate bar (42, 52). After assembly, the first hook (a1) and the fifth hook (a5, a7) are hooked to each other, and the second hook (a2) and the sixth hook (a6, a8) are hooked to each other, thereby preventing separation between the first probe (10) and the second probe (20). In other words, the first probe (10) and the second probe (20) are prevented from being separated from each other.

Referring to FIGS. 7 to 9, in the third embodiment, compared to the second embodiment, a first guide dam (b1) protrudes on the back surface of the first plate bar (51) to guide the sliding of the first hook (a1) in the first finger group (11), and a second guide dam (b2) protrudes on the back surface of the second plate bar (52) to guide the sliding of the second hook (a2) in the second finger group (12). Between the guide dam and the guide snap, a trench (c1, c2) is formed, in which the hook is positioned and which serves as a passage through which the pogo pin moves in the longitudinal direction. The hooks formed at the tips of the fingers of the first probe can be stably guided and slid in each of the trenches pinched by the guide dams. Therefore, there is an advantage in that it becomes easier to maintain a vertical (longitudinal) alignment state between the first probe and the second probe.

Referring to FIGS. 10 to 12, in the fourth embodiment, the first probe (60) has a first hook (63a, 64a) that protrudes between the first bridge (B5) and the first external contact portion (68) to have an outer diameter larger than the inner diameter of the coil spring (30) and catches one end of the coil spring (30), and the second probe (70) has a second hook (73a, 74a) that protrudes between the second bridge (B6) and the second external contact portion (78) to have an outer diameter larger than the inner diameter of the coil spring (30) and catches the other end of the coil spring (30).

In the fourth embodiment, the first bridge and the second bridge do not have hooks, and the disadvantage of a relatively small contact area between the first bridge and the second bridge due to the hooks is overcome, and mutual detachment between the first probe and the second probe is prevented by using hooks (63a, 64a, 73a, 74a).

In the first to third embodiments, the first probe and the second probe are provided with hooks. When the first probe and the second probe come into contact with each other, they do so through the hooks, so that the contact area between the first probe and the second probe is limited to the contact portion of the hook.

In contrast, in the fourth embodiment, since one side of each finger (f5, f6) which has a rectangular cross-section and is shaped like a rod extending in the longitudinal direction and the plane of the plate bar (71, 72) come into contact with each other, there is an advantage in that a much larger contact area can be secured compared to the first to third embodiments in which contact is made through a hook.

10.60 : 1st probe
11,61: 1st finger group
12,62: 2nd finger group
13,14,63,64: 1st merger
15,16,65,66 : 1st stopper
17.67 : 1st extension
18,68: 1st external contact
20,40,50,70 : 2nd probe
21: 3rd Finger Group
22: 4th Finger Group
23,24: 2nd merger
25,26,45,46,55,56,75,75 : 2nd stopper
27,47,57,77 : 2nd extension
28,48,58,78: 2nd external contact
30 : Coil spring
B1,B5: 1st Bridge
B2,B3,B4,B6: Second Bridge

Claims (9)

A first probe (10, 60) having a first bridge (B1, B5) formed on one side and a first external contact portion (18, 68) formed on the other side; A second probe (20, 40, 50, 70) having a second bridge (B2, B3, B4, B6) formed on one side and a second external contact portion (28, 48, 58, 78) formed on the other side; And the coil spring (30) that elastically supports the first probe (10,60) and the second probe (20,40,50,70) while the first bridge (B1,B5) and the second bridge (B2,B3,B4,B6) are inserted, and the first bridge (B1,B5) and the second bridge (B2,B3,B4,B6) are in contact with each other in the slidable spring probe pin,
The above first bridge (B1, B5) is
A first finger group (11, 61) in which a plurality of fingers (f1, f5) extending in a rod shape are arranged in parallel;
A plurality of fingers (f2, f6) extending in a rod shape are arranged in parallel and a second finger group (12, 62) is arranged spaced apart from the first finger group (11, 61);
Each finger of the first finger group (11, 61) contacts the second bridge (B2, B3, B4, B6), respectively, and each finger of the second finger group (12, 62) contacts the second bridge (B2, B3, B4, B6), respectively, to transmit an electric signal between the first probe and the second probe.
Spring probe pin with multi-fingers. In claim 1,
The above second bridge (B2) is,
A third finger group (21) in which a plurality of fingers (f3) extending in a rod shape are arranged in parallel;
A plurality of fingers (f4) extending in a rod shape are arranged in parallel and a fourth finger group (22) is arranged spaced apart from the third finger group (21);
Each finger of the first finger group (11) contacts a corresponding finger of the third finger group (21), and each finger of the second finger group (12) contacts a corresponding finger of the fourth finger group (22), thereby transmitting an electric signal between the first probe and the second probe.
Spring probe pin with multi-fingers. In claim 2,
The first finger group (11) contacts the inner surface of the third finger group (21), and the second finger group (12) contacts the inner surface of the fourth finger group (22).
Before the above first bridge (B1) and the above second bridge (B2) are assembled,
The first finger group (11) and the second finger group (12) are spaced further apart at the free end than at the fixed end, or
The third finger group (21) and the fourth finger group (22) are spaced further apart from the fixed end than from the free end.
Spring probe pin with multi-fingers. In claim 3,
In the first finger group (11) and the second finger group (12), a first hook (a1) and a second hook (a2) having an outwardly protruding shape are respectively formed at the tip of each finger.
In the third finger group (21) and the fourth finger group (22), a third hook (a3) and a fourth hook (a4) having an inwardly protruding shape are respectively formed at the tip of each finger.
After assembly, the first hook (a1) and the third hook (a3) are hooked to each other, and the second hook (a2) and the fourth hook (a4) are hooked to each other, thereby preventing separation between the first probe (10) and the second probe (20).
Spring probe pin with multi-fingers. In claim 1,
The above second bridge (B3, B4, B6) is
A first plate bar (41, 51, 71) having a straight band shape;
It includes a second plate bar (42, 52, 72) having a straight band shape and spaced apart from the first plate bar (41, 51, 71);
All fingers of the first finger group (11,61) contact the first plate bar (41,51,71) respectively, and all fingers of the second finger group (12,62) contact the second plate bar (42,52,72) respectively, thereby transmitting an electric signal between the first probe and the second probe.
Spring probe pin with multi-fingers. In claim 5,
The first finger group (11,61) contacts the inner surface of the first plate bar (41,51,71), and the second finger group (12,62) contacts the inner surface of the second plate bar (42,52,72).
Before the above first bridge (B1, B5) and the above second bridge (B3, B4, B6) are assembled,
The first finger group (11,61) and the second finger group (12,62) are spaced further apart at the free end than at the fixed end, or
The first plate bar (41, 51, 71) and the second plate bar (42, 52, 72) are spaced further apart at the fixed end than at the free end.
Spring probe pin with multi-fingers. In claim 6,
In the first finger group (11) and the second finger group (12), a first hook (a1) and a second hook (a2) having an outwardly protruding shape are respectively formed at the tip of each finger.
The tips of the first plate bar (41, 51) and the second plate bar (42, 52) are provided with a fifth hook (a5, a7) and a sixth hook (a6, a8) having an inwardly protruding shape.
After assembly, the first hook (a1) and the fifth hook (a5, a7) are hooked to each other, and the second hook (a2) and the sixth hook (a6, a8) are hooked to each other, thereby preventing separation between the first probe (10) and the second probe (20).
Spring probe pin with multi-fingers. In claim 7,
On the back surface of the first plate bar (51), a first guide dam (b1) protrudes to guide the sliding of the first hook (a1) in the first finger group (11).
On the back surface of the second plate bar (52), a second guide dam (b2) protrudes to guide the sliding of the second hook (a2) in the second finger group (12).
Spring probe pin with multi-fingers. In claim 1,
The above first probe (60) is provided with a first hook (63a, 64a) that protrudes between the first bridge (B5) and the first external contact portion (68) to have an outer diameter larger than the inner diameter of the coil spring (30) and hooks one end of the coil spring (30).
The second probe (70) has a second hook (73a, 74a) that protrudes between the second bridge (B6) and the second external contact portion (78) to have an outer diameter larger than the inner diameter of the coil spring (30) and catches the other end of the coil spring (30).
Spring probe pin with multi-fingers.