Tip-replaceable probe

Abstract

The present invention relates to a tip-replaceable probe in which replacement of a tip part is facilitated though a coupling structure of the tip part and the tip-replaceable probe, the tip-replaceable probe comprising: an outer plunger having a hollow; an inner plunger movable relative to the outer plunger along the hollow; an inner elastic part for applying elastic force to the inner plunger; an insulating part for insulating the outer plunger and the inner plunger; and the tip part which constitutes a part of the outer plunger and which is detachably coupled to the insulating part.

Description

Replaceable tip probe

[0001] The present invention relates to a tip-replaceable probe, and more specifically, to a tip-replaceable probe in which the tip portion can be easily replaced.

[0002] Probes, used to test the electrical characteristics of test targets such as semiconductor packages and batteries, are key components used to transmit and receive electrical signals to the test target and are typically composed of multiple probe pins. The tip of each probe pin makes direct contact with the test target to reliably transmit electrical signals.

[0003] Probes have a problem in that their tips are prone to wear due to repeated contact with the test object and heat generated by the electric current. This wear affects inspection reliability and accuracy, requiring periodic maintenance or replacement.

[0004] As shown in FIG. 1, the plunger (11') of a conventional probe (10') has a structure in which the tip cannot be replaced individually or is difficult to replace. As a result, even when the tip is worn out, the entire probe must be disassembled and a new pin assembled, which is a cumbersome process. This structural limitation increases time and cost during maintenance and acts as a factor that reduces inspection efficiency.

[0005] Therefore, an improved structure is required that allows for the replacement or repair of the probe tip. This can contribute to simplifying the maintenance of the inspection device, increasing inspection efficiency, and extending the device's lifespan.

[0006] [Prior Art Literature]

[0007] [Patent Literature]

[0008] (Patent Document 1) Registered Patent Publication No. 10-0958136

[0009] To achieve the above-mentioned objective, the present invention aims to provide a tip-replaceable probe in which the tip portion is easily replaced.

[0010] To achieve the above-mentioned objective, a tip-replaceable probe according to an embodiment of the present invention, for inspecting the electrical characteristics of an object to be inspected, may comprise: an outer plunger having a hollow; an inner plunger movable relative to the outer plunger along the hollow; an inner elastic part that applies an elastic force to the inner plunger; an insulating part that insulates the outer plunger and the inner plunger; and a tip part that constitutes a part of the outer plunger and is detachably coupled to the insulating part.

[0011] In addition, in an embodiment of the present invention, one side of the insulating portion may be coupled to the tip portion, and the other side may be supported by the outer plunger.

[0012] In addition, in an embodiment of the present invention, the insulating portion includes a locking projection provided along the circumference of one end portion and a cut portion cut in the longitudinal direction from the one end portion, and the tip portion includes a locking projection having a step at one end portion, and the insulating portion and the tip portion may be joined by the locking projection and the locking projection.

[0013] In addition, in an embodiment of the present invention, the external plunger includes a main body portion having a receiving portion into which the tip portion is inserted, and the tip portion may be physically coupled to the insulating portion in the receiving portion and electrically connected to the main body portion in the receiving portion.

[0014] The present invention has the effect of allowing the tip portion to be easily replaced through a combined structure of the tip portion and the tip-replaceable probe.

[0015] In addition, the present invention has the effect of allowing the tip portion to be repeatedly replaced through a combined structure of a metal tip portion and a non-metal insulating portion.

[0016] Figure 1 is a drawing showing a conventional probe.

[0017] FIG. 2 is a drawing showing a tip-replaceable probe according to an embodiment of the present invention.

[0018] FIG. 3 is a diagram showing the first deformation state of a tip-replaceable probe according to an embodiment of the present invention.

[0019] FIG. 4 is a diagram showing the second deformation state of a tip-replaceable probe according to an embodiment of the present invention.

[0020] Figure 5 is a diagram showing the combined state of the tip portion and the insulating portion in an embodiment of the present invention.

[0021] FIG. 6 is a diagram showing the separation state of the tip portion and the insulating portion in an embodiment of the present invention.

[0022] FIG. 7 is a drawing showing an insulating part in an embodiment of the present invention.

[0023] FIG. 8a is a drawing showing a tip portion in an embodiment of the present invention.

[0024] FIG. 8b is a cross-sectional view of the tip portion in an embodiment of the present invention.

[0025] A person skilled in the art can develop various devices that embody the principles of the invention and are included within the concept and scope of the invention, even though they are not explicitly described or illustrated in this specification. Furthermore, all conditional terms and embodiments listed in this specification are, in principle, explicitly intended only for the purpose of enabling an understanding of the concept of the invention and should be understood as not being limited to the embodiments and conditions specifically listed as such.

[0026] The aforementioned objectives, features, and advantages will become more apparent through the following detailed description of the invention in conjunction with the attached drawings, and accordingly, a person skilled in the art to which the invention pertains will be able to easily implement the technical concept of the invention.

[0027] The embodiments described herein will be explained with reference to cross-sectional and / or perspective views, which are exemplary illustrations of the present invention. The dimensions, etc., of the components illustrated in these drawings may be exaggerated for effective explanation of the technical content. The shapes of the exemplary illustrations may be modified due to manufacturing techniques and / or tolerances, etc.

[0028] In describing various embodiments, for convenience, the same name and the same reference number are assigned to components performing the same function, even if the embodiments are different. Additionally, the expression 'at least one of A, B, and C' means composed of a combination of one, two, or three of A, B, and C. The longitudinal direction may refer to the +x direction and the -x direction. The cross-sectional area refers to the area of ​​the surface perpendicular to the longitudinal direction. The radial direction may refer to the direction perpendicular to the longitudinal direction from the center direction of the tip-replaceable probe (10). Furthermore, configurations and operations already described in other embodiments are omitted for convenience.

[0029]

[0030] Hereinafter, a tip-replaceable probe (10) according to an embodiment of the present invention will be described.

[0031] FIG. 2 is a drawing showing a tip-replaceable probe (10) according to an embodiment of the present invention. FIG. 3 is a drawing showing a first deformation state of a tip-replaceable probe (10) according to an embodiment of the present invention. FIG. 4 is a drawing showing a second deformation state of a tip-replaceable probe (10) according to an embodiment of the present invention.

[0032] Referring to FIG. 2, a tip-replaceable probe (10) according to an embodiment of the present invention can inspect the electrical characteristics of an object to be inspected. The tip-replaceable probe (10) according to an embodiment of the present invention may include: an outer plunger (100) having a hollow (122); an inner plunger (200) that is movable relative to the outer plunger (100) along the hollow (122); an inner elastic part (250) that applies elastic force to the inner plunger (200); an insulating part (300) that insulates the outer plunger (100) and the inner plunger (200); and a tip part (110) that forms a part of the outer plunger (100) and is detachably coupled to the insulating part (300). Additionally, the tip-replaceable probe (10) according to an embodiment of the present invention may further include an external elastic part (150) that applies elastic force to an external plunger (100) and a fixed support part (400) that supports the external elastic part (150). Additionally, the tip-replaceable probe (10) according to an embodiment of the present invention may further include an additional insulating part (350) that insulates the external plunger (100) and the internal plunger (200). Additionally, the tip-replaceable probe (10) according to an embodiment of the present invention may further include a stopper (410) formed and extended radially from the external plunger (100).

[0033] The object to be inspected (not shown) may be a semiconductor package and / or a secondary battery. Here, the secondary battery may be used in at least one of a smartphone, a tablet, and a laptop, and its type is not limited to those described above.

[0034] The object to be inspected has an external terminal (not shown) that is electrically connected to an external plunger (100) and an internal plunger (200) so that it can exchange electrical signals with the external plunger (100) and the internal plunger (200). The object to be inspected may have multiple external terminals that are electrically connected to the external plunger (100) and the internal plunger (200), respectively, and may have a single external terminal that is electrically connected to the external plunger (100) and the internal plunger (200).

[0035] The outer plunger (100) is a current section, and its cross-sectional area perpendicular to the longitudinal direction may be formed to be larger than the cross-sectional area of ​​the inner plunger (200). The outer plunger (100) can provide current to the object to be inspected during the charging process of the object to be inspected, and can receive current from the object to be inspected during the discharging process of the object to be inspected.

[0036] The external plunger (100) may include a tip portion (110) and a main body portion (120). The tip portion (110) may come into direct contact with an external terminal of the object to be inspected. The main body portion (120) may be electrically connected to the tip portion (110) and may be formed to extend in the longitudinal direction. The main body portion (120) may include a receiving portion (121) that accommodates the tip portion (110) and may include a hollow (122) in which the internal plunger (200) and the insulating portion (300) are located.

[0037] One side of the receiving portion (121) is formed to be open in the longitudinal direction so that the tip portion (110) can enter, and the other side is opened in the longitudinal direction with a cross-sectional area smaller than that of the tip portion (110) so that it can communicate with the hollow (122) of the main body portion (120).

[0038] The hollow (122) may include a first hollow (122a) where the first part (310) of the insulating part (300) is located, and a second hollow (122b) where the second part (320) of the insulating part (300) is located. The second hollow (122b) may be in communication with the receiving part (121). The radius of the first hollow (122a) may be smaller than the radius of the second hollow (122b). The difference in radius between the first hollow (122a) and the second hollow (122b) may form a step between the first hollow (122a) and the second hollow (122b). The first part (310) and the second part (320) will be described later.

[0039] The inner plunger (200) is a voltage section and can be formed with a cross-sectional area perpendicular to the longitudinal direction that is smaller than the cross-sectional area of ​​the outer plunger (100). The inner plunger (200) can measure voltage during the charging and discharging process of the object to be inspected. The inner plunger (200) can provide or receive a control signal to or from the object to be inspected during the charging and discharging process of the object to be inspected.

[0040] The inner plunger (200) may include an inner tip portion (210) and an inner body portion (220). The inner tip portion (210) may come into direct contact with an external terminal of the object to be inspected. The inner body portion (220) may be connected to the inner tip portion (210) and formed to extend in the longitudinal direction. The cross-sectional area of ​​the inner tip portion (210) perpendicular to the longitudinal direction may be larger than the cross-sectional area of ​​the inner body portion (220).

[0041] The external elastic member (150) can apply elastic force to the external plunger (100). When pressure is transmitted from the object to be inspected to the external plunger (100), the external elastic member (150) can contract in accordance with the longitudinal movement of the external plunger (100). When the pressure is released, the external elastic member (150) can apply elastic force to the external plunger (100) in the longitudinal direction to move it back to its original position.

[0042] The external elastic member (150) is located outside the external plunger (100) and can pass the external plunger (100) in the longitudinal direction from the center. One end of the external elastic member (150) may be supported by the external support member (130) and the other end may be supported by the fixed support member (400).

[0043] The external support member (130) may be formed to protrude radially perpendicular to the longitudinal direction on the external plunger (100) or the main body (120) and may support the external elastic member (150) in the longitudinal direction. The fixed support member (400) may be provided on the outer side of the external plunger (100) and may support the external elastic member (150) in the longitudinal direction. The fixed support member (400) may allow the external plunger (100) to pass through in the longitudinal direction from the center.

[0044] When pressure is applied from the object to be inspected to the external plunger (100), the external support member (130) can move in the longitudinal direction while contracting the external elastic member (150). At this time, the fixed support member (400) can be fixed to the outside while contracting the external elastic member (150).

[0045] The internal elastic member (250) can apply elastic force to the internal plunger (200). When pressure is transmitted from the object to be inspected to the internal plunger (200), the internal elastic member (250) can contract in accordance with the longitudinal movement of the internal plunger (200). When the pressure is released, the internal elastic member (250) can apply elastic force in the longitudinal direction to the internal plunger (200) to move it back to its original position.

[0046] The internal elastic member (250) is located outside the internal plunger (200), inside the external plunger (100) (hollow (122)), and in the small hole (300a), so that the internal plunger (200) can pass through in the longitudinal direction from the center. One side of the internal elastic member (250) may be supported by the internal support member (340) and the other side may be supported by the insulating member (300).

[0047] The inner support portion (340) may be provided along the circumference of the inner plunger (200) or the inner body portion (220) and may come into longitudinal contact with the inner elastic portion (250). The inner support portion (340) may support the inner elastic portion (250) in the longitudinal direction. The insulating portion (300) may be provided on the outer side of the inner plunger (200) and may support the inner elastic portion (250) in the longitudinal direction.

[0048] When pressure is applied from the object to be inspected to the inner plunger (200), the inner support member (340) can move in the longitudinal direction while contracting the inner elastic member (250). At this time, the fixed support member (400) can be fixed to an external device while contracting the outer elastic member (150).

[0049] The insulating part (300) may be located in the hollow (122) of the outer plunger (100). The insulating part (300) may be located between the outer plunger (100) and the inner plunger (200). The insulating part (300) may be fixed to the outer plunger (100) and may provide a space for the inner plunger (200) to move through the small hollow (300a) and the extended hollow connected to the small hollow (300a). The insulating part (300) may electrically insulate the outer plunger (100) and the inner plunger (200) from each other between the outer plunger (100) and the inner plunger (200). One side of the insulating part (300) may be coupled to the tip part (110). The insulating part (300) may be supported on the outer plunger (100).

[0050] The insulating part (300) may include a first part (310) located in the first hollow (122a) of the main body part (120) and positioned between the inner plunger (200) and the outer plunger (100), a second part (320) located in the second hollow (122b) of the main body part (120) and positioned between the inner plunger (200) and the outer plunger (100), and a third part (330) coupled with the tip part (110).

[0051] The additional insulation portion (350) may have a portion located in the hollow (122) of the outer plunger (100), and the remainder located exposed outside the hollow (122). The additional insulation portion (350) may be located between the outer plunger (100) and the inner plunger (200). The additional insulation portion (350) may electrically insulate the outer plunger (100) and the inner plunger (200) from each other between the outer plunger (100) and the inner plunger (200). The additional insulation portion (350) may be spaced apart in the longitudinal direction from the insulation portion (300). The additional insulation portion (350) may also be located at the end of the outer plunger (100).

[0052] The outer diameter of the first part (310) may be smaller than the outer diameter of the second part (320). The difference in outer diameter between the first part (310) and the second part (320) may form a step between the first part (310) and the second part (320). The step of the first part (310) and the second part (320), and the step of the first hollow (122a) and the second hollow (122b) may come into contact with each other so that the insulating part (300) is supported on the main body part (120). The inner diameter of the first part (310) may be smaller than the inner diameter of the second part (320). The inner diameter of the second part (320) may be the same as the inner diameter of the third part (330).

[0053] The difference in inner diameter between the first part (310) and the second part (320) can form a small hole (300a) in the second part (320) and the third part (330) to accommodate the internal elastic part (250) and support the internal elastic part (250) in the longitudinal direction. A portion of the internal elastic part (250) may be located in the small hole (300a), and the remainder may be exposed to the outside of the small hole (300a). One end of the internal elastic part (250) may be supported by the internal support part (340), and the other end may be supported by the insulation part (300).

[0054] The tip portion (110) may constitute part of the external plunger (100). The tip portion (110) may be detachably coupled to the insulating portion (300). Here, detachability means that the tip portion (110) is separated from the insulating portion (300) without damage to the components including the tip portion (110) and the insulating portion (300).

[0055] The tip portion (110) forms part of the external plunger (100) and can transmit an electrical signal between the object to be inspected and the main body portion (120). The tip portion (110) can be physically coupled with the insulating portion (300) and can be electrically connected with the main body portion (120). Here, physical coupling means structural coupling or mechanical coupling, excluding electrical coupling.

[0056] That is, the tip portion (110) may be electrically insulated while being physically coupled with the insulating portion (300). However, the tip portion (110) may be electrically connected by contacting the main body portion (120).

[0057] Referring to FIG. 3, when the tip-replaceable probe (10) receives pressure from the object to be inspected, the inner plunger (200) can move in the longitudinal direction. The inner plunger (200) can move relative to the outer plunger (100) in the hollow (122) of the outer plunger (100). This state is called the first deformation state.

[0058] In the first deformation state, the fixed support member (400) may be in a fixed state, and the outer plunger (100) may be in a fixed state or may move slightly in the longitudinal direction by the insulating member (300). That is, the inner plunger (200) may move relative to the fixed support member (400) and the outer plunger (100).

[0059] Referring to FIG. 4, when the tip-replaceable probe (10) receives additional pressure from the object to be inspected, the inner plunger (200) and the outer plunger (100) can move in the longitudinal direction. The inner plunger (200) and the outer plunger (100) can move relative to the fixed support (400). This state is called the second deformation state.

[0060] In the second deformation state, the fixed support member (400) may be in a fixed state, and the inner plunger (200) and the outer plunger (100) may move in the longitudinal direction. That is, the inner plunger (200) and the outer plunger (100) may move relative to the fixed support member (400). The outer plunger (100) may provide or receive current to the object to be inspected, and the inner plunger (200) may measure the voltage of the object to be inspected.

[0061] When the second deformation state is released, the stopper (410) moves longitudinally together with the outer plunger (100) and contacts the fixed support (400) to restrict the movement of the outer plunger (100).

[0062] Next, the connection and separation of the tip portion (110) will be explained.

[0063] FIG. 5 is a drawing showing the combined state of the tip portion (110) and the insulating portion (300) in an embodiment of the present invention. FIG. 6 is a drawing showing the separated state of the tip portion (110) and the insulating portion (300) in an embodiment of the present invention. FIG. 7 is a drawing showing the insulating portion (300) in an embodiment of the present invention. FIG. 8a is a drawing showing the tip portion (110) in an embodiment of the present invention. FIG. 8b is a drawing showing a cross-section of the tip portion (110) in an embodiment of the present invention.

[0064] Referring to FIGS. 5 and 6, the tip portion (110) and the insulating portion (300) can be joined together. The tip portion (110) can be joined to the insulating portion (300) in the longitudinal direction and can be separated from the insulating portion (300) in the longitudinal direction.

[0065] The tip portion (110) may be made of a metal material, and the insulating portion (300) may be made of a non-metal material. The insulating portion (300) may be made of synthetic resin and Teflon material. The insulating portion (300) may have a lower elastic modulus than the tip portion (110). Since the tip portion (110) has a relatively high elastic modulus and is difficult to deform, and the insulating portion (300) has a relatively low elastic modulus and is easy to deform, the tip portion (110) can be easily combined with and separated from the insulating portion (300) by the elastic deformation of the insulating portion (300).

[0066] The tip portion (110) can come into contact with an inner surface (bottom surface) of the receiving portion (121) and can come into contact with an inner side surface perpendicular to the inner surface of the receiving portion (121). The tip portion (110) can come into contact with the receiving portion (121) without physical coupling. When the tip portion (110) is received in the receiving portion (121), it comes into contact with the receiving portion (121), so that a current path between the tip portion (110) and the main body portion (120) can be formed.

[0067] The tip portion (110) can be received in the receiving portion (121) in the longitudinal direction and combined with the insulating portion (300). The insulating portion (300) can be combined with the tip portion (110) by having the third portion (330) exposed in the receiving portion (121) (or outside the small hole (300a)).

[0068] Referring to FIG. 7, the insulating portion (300) (or the third portion (330)) may include a locking projection (331) provided along the circumference of one end portion and an incision portion (332) in which at least a portion is cut in the longitudinal direction from one end portion.

[0069] The stopper projection (331) may be formed to protrude radially from the insulating portion (300) (or the third portion (330)). The cut portion (332) may be provided in multiple numbers, extending at least a portion in the longitudinal direction from one end of the insulating portion (300).

[0070] Referring to FIGS. 8a and 8b, the tip portion (110) may include a stopper (113) having a step at one end. The insulating portion (300) and the tip portion (110) may be joined by a stopper projection (331) and a stopper (113).

[0071] The tip portion (110) may include a tip hollow comprising a first tip hollow (115) and a second tip hollow (116). The radius of the first tip hollow (115) may be smaller than the radius of the second tip hollow (116). The difference in radius between the first tip hollow (115) and the second tip hollow (116) may form a stopper (113).

[0072] The radius of the first tip hollow (115) may be smaller than the outer diameter of the locking projection (331). When the tip portion (110) first enters the receiving portion (121) and applies force to the insulating portion (300), the locking projection (331) is elastically deformed in the center direction (in the direction of the inner plunger (200)) and can move in the first tip hollow (115). When the tip portion (110) secondarily enters the receiving portion (121), the locking projection (331) is restored in the radial direction (in the direction of the outer plunger (100)) and can be positioned in the second tip hollow (116). At this time, the internal elastic part (250) applies a force in the longitudinal direction to the insulating part (300), so that the locking projection (331) of the insulating part (300) catches on the locking projection (113) of the tip part (110), and the insulating part (300) and the tip part (110) can be combined.

[0073] Conversely, when the tip portion (110) first detaches from the receiving portion (121) and applies force to the insulating portion (300), the locking projection (331) is elastically deformed in the center direction (in the direction of the inner plunger (200)) and can move within the first tip hollow (115). When the tip portion (110) secondarily detaches from the receiving portion (121) and releases the force applied to the insulating portion (300), the locking projection (331) is restored in the radial direction (in the direction of the outer plunger (100)) and can be positioned outside the first tip hollow (115). At this time, the insulating portion (300) and the tip portion (110) can be separated.

[0074] In an embodiment of the present invention, the tip portion (110) can be physically coupled to the insulating portion (300) and electrically connected to the main body portion (120) by only a force applied in the longitudinal direction, and can be physically separated from the insulating portion (300) and electrically separated from the main body portion (120) by only a force applied in the longitudinal direction.

[0075] In an embodiment of the present invention, the insulating part (300) is made of a material having a lower elastic modulus than a metal material (e.g., synthetic resin or Teflon), so that it can be easily elastically deformed by receiving force from the tip part (110) and can be repeatedly combined and separated from the tip part (110).

[0076] In an embodiment of the present invention, the incision (332) induces the insulating part (300) to easily elastically deform, so that the insulating part (300) can easily elastically deform by receiving force from the tip part (110), and the durability of the tip-replaceable probe (10) can be improved despite repeated coupling and separation with the tip part (110).

[0077] Referring again to FIG. 5, the tip portion (110) may be formed in a cylindrical shape having a tip hollow. The tip portion (110) may have a first tip portion (111) on one side. The tip portion (110) may have a first tip portion (111) and a second tip portion (112) on one side and the other side, respectively. The first tip portion (111) and the second tip portion (112) may each be formed as a set of repeating peaks and valleys.

[0078] The first tip portion (111) can electrically connect the tip portion (110) and the object to be inspected by contacting the external terminals of the object to be inspected with a plurality of acids.

[0079] The second tip portion (112) may electrically connect the tip portion (110) and the main body portion (120) by having a plurality of peaks in longitudinal contact with the main body portion (120). Furthermore, the second tip portion (112), located on the other side of the tip portion (110), may form a plurality of ridges spaced apart from the main body portion (120) to form a plurality of voids. The plurality of voids accommodate foreign substances present between the tip portion (110) and the main body portion (120), allowing the tip portion (110) and the main body portion (120) to stably contact and reach a state of electrical connection. Meanwhile, the tip portion (110) may electrically connect the tip portion (110) and the main body portion (120) by having a side surface (side face) in radial contact with the receiving portion.

[0080] The tip portion (110) may be provided with a recess (114) on the side that is recessed in the direction of the center (or the direction of the inner plunger (200)). The recess (114) provides a space that can be grasped by a user's hand or an external device, allowing the tip portion (110) to easily receive longitudinal force.

[0081] The tip-replaceable probe (10) according to an embodiment of the present invention has the advantage that only the tip portion (110) can be replaced without the entire component being separated.

[0082] In addition, the tip-replaceable probe (10) according to the embodiment of the present invention has the advantage that the tip portion (110) can be easily replaced by applying only a force in the longitudinal direction. As a comparative example, in the case of a method of replacing the tip portion (110) by applying a force in the rotational direction, a separate external configuration may be required to suppress the rotation of the probe against the rotation of the tip portion (110). However, in the case of a method of replacing the tip portion (110) only in the longitudinal direction, if the movement in the longitudinal direction is suppressed by an external device such as a fixed support portion (400), the tip portion (110) can be easily replaced.

[0083] As described above, although the present invention has been explained with reference to preferred embodiments, a person skilled in the art may implement the present invention with various modifications or variations without departing from the spirit and scope of the invention as described in the following claims.

[0084] [Explanation of the symbol]

[0085] 10: Replaceable tip probe

[0086] 100 : External plunger

[0087] 110 : Tip

[0088] 111: 1st tip section

[0089] 112: 2nd Advanced Section

[0090] 113 : Stopper

[0091] 114 : Depression

[0092] 115 : 1st tip hollow

[0093] 116 : 2nd tip hollow

[0094] 120 : Main body

[0095] 121 : Reception Department

[0096] 122 : Communist China

[0097] 122a : 1st hollow

[0098] 122b : 2nd Hollow

[0099] 130 : External support

[0100] 150 : External elastic part

[0101] 200 : Internal plunger

[0102] 210 : My Tips

[0103] 220 : Main body

[0104] 250 : Internal elastic part

[0105] 300 : Insulation part

[0106] 310 : Part 1

[0107] 320 : Part 2

[0108] 330 : Part 3

[0109] 331 : Stopping projection

[0110] 332 : Incision

[0111] 340 : Internal support

[0112] 350 : Additional insulation

[0113] 400 : Fixed support part

[0114] 410 : Stopper

Claims

1. In a tip-replaceable probe for inspecting the electrical characteristics of an object to be inspected, External plunger equipped with a hollow; An inner plunger movable relative to the outer plunger along the hollow; An internal elastic part that applies elastic force to the internal plunger above; An insulating part that insulates the above-mentioned outer plunger and the above-mentioned inner plunger; and A tip-replaceable probe comprising: a tip portion that forms part of the external plunger and is detachably coupled to the insulating portion.

2. In Paragraph 1, The above insulating part is, A tip-replaceable probe, one side of which is coupled to the tip portion and the other side of which is supported by the external plunger.

3. In Paragraph 1, The above insulating part is, It includes a locking projection provided along the circumference of one end and an incision portion cut longitudinally from said end. The above tip portion is, It includes a stopper having a step at one end, and A tip-replaceable probe in which the insulating portion and the tip portion are joined by the locking projection and the locking tab.

4. In Paragraph 1, The above external plunger is, It includes a main body portion having a receiving portion into which the above-mentioned tip portion is inserted, and The above tip portion is, A tip-replaceable probe that is physically coupled to the insulating part in the receiving part and electrically connected to the main body part in the receiving part.

Images