CN208045739U - Conductive Terminals and Connector Assemblies - Google Patents

Abstract

The utility model discloses a conductive terminal and a connector assembly. The conductive terminal is adapted to electrically connect the wire to the circuit board, the circuit board is provided with a through hole, the conductive terminal includes: a base, the base includes two opposite first edges and two opposite second edges, And an insertion hole suitable for inserting a wire is defined on the base, and the insertion hole is aligned with the through hole; a pair of clamping arms extend obliquely from the two first edges of the base respectively, The ends of the clamping arms respectively form a clamping part to clamp the conductor of the wire inserted through the insertion hole; and at least one pair of release parts adapted to move away from each other to support Open a pair of the clamping parts. In the utility model, the conductive terminal can allow the wire to be inserted into it from below, and at the same time allow the wire to be inserted and pulled out repeatedly, so that the wire can be easily replaced.

Description

Conductive Terminals and Connector Assemblies

technical field

Embodiments of the present invention relate to a conductive terminal and connector assembly, in particular to a wire-to-board conductive terminal and connector assembly without a housing, and more particularly to a releasable wire-to-wire assembly suitable for inserting wires from below. Conductive terminal and connector assemblies.

Background technique

In the prior art, electrical connectors are generally used to electrically connect the wires to the circuit board. When the conductive terminal is electrically connected to the circuit board, the conductive terminal is usually fixed in an insulating housing in advance, and then connected and fixed to the circuit board. However, such a connection method is not only costly, but also the insulating case occupies a relatively large space on the circuit board.

In order to overcome the above-mentioned defects, an improved conductive terminal has appeared in the prior art, which can realize the electrical connection between the wire and the circuit board without fixing the insulating case. However, such conductive terminals only allow insertion of wires from above the circuit board. With the gradual expansion of customer needs, it is required to be able to insert the wire into the conductive terminal from below.

Moreover, in the prior art, most of the above-mentioned conductive terminals have a single-use structure, that is, once the conductor of the wire is inserted into the conductive terminal, the conductor of the wire cannot be pulled out. With this single-use construction, lead replacement is not possible.

In addition, in the existing conductive terminal without a housing, the ability to locate and hold the wires inserted therein is low, so the wires are easy to come out of the connection.

Therefore, there is an urgent need for a conductive terminal and connector assembly that can solve the above problems.

Utility model content

The purpose of this utility model is to solve at least one aspect of the above-mentioned problems and defects existing in the prior art.

According to one aspect of the present utility model, a conductive terminal is provided, which is suitable for electrically connecting a wire to a circuit board, the circuit board is provided with a through hole, and the conductive terminal includes: a base, and the base includes two opposite The first edge and two opposite second edges, and an insertion hole suitable for inserting a wire is defined on the base, and the insertion hole is aligned with the through hole; a pair of clamping arms, respectively extending from the base The two first edges of the two first edges extend obliquely towards each other, the ends of the clamping arms respectively form clamping parts to clamp the conductors of the wires inserted through the insertion holes; and at least one pair of release parts, the The release part is adapted to move away from each other to expand the pair of clamping parts.

According to an exemplary embodiment of the present invention, the releasing part is an arc part formed on at least one of the two ends of the clamping part, and the arc part is deflected toward the outside.

According to an exemplary embodiment of the present invention, the conductive terminal further includes a release limiting portion, which is adapted to limit the distance that the releasing portions move away from each other, so as to prevent the releasing portions from Over-release of the clamping portion is caused when the clamping portion is stretched apart.

According to an exemplary embodiment of the present invention, the conductive terminal further includes two side walls extending from the second edge of the base along the insertion direction of the wire, and the release limiting portion includes a an opening in the side wall or an outwardly protruding recess, the release portion extends into the opening or recess in a direction perpendicular to the insertion direction, and when the release portions move a distance away from each other When abutting against the side of the opening or the recessed portion, the release portions are prevented from continuing to move away from each other, so as to avoid excessive release of the clamping portion.

According to an exemplary embodiment of the present invention, each of the side walls includes a base side wall extending from the second edge along the insertion direction and two base side walls extending from both sides of the base side wall along the A support arm extending in the insertion direction, the two facing sides of the two support arms are configured as the release limiter, and the release portion extends to the support in a direction perpendicular to the insertion direction between the two facing sides of the arm.

According to an exemplary embodiment of the present invention, the ends of the two side walls extend inwardly parallel to the first edge to form a support portion, and the support portion extends outward parallel to the first edge beyond the The side walls form soldering portions adapted to be soldered to the circuit board.

According to an exemplary embodiment of the present invention, the support part includes at least one release hole, and an external release tool is adapted to pass through the release hole to engage with the release part and make the release parts move away from each other. .

According to an exemplary embodiment of the present invention, the conductive terminal includes two pairs of release portions and two release holes.

According to an exemplary embodiment of the present invention, the conductive terminal further includes a guide part disposed between the two clamping arms, and the guide part is configured to prevent the wire from being deviated during insertion.

According to an exemplary embodiment of the present invention, the guide parts extend obliquely upward from the side of the side wall.

According to an exemplary embodiment of the present invention, the conductive terminal further includes two side walls extending from the first edge of the base along the insertion direction of the wire, and the release limiting portion is formed on the side walls .

According to an exemplary embodiment of the present invention, the release limiting portion is configured as a protrusion extending toward the release portion on both sides of the side wall, when the release portions move away from each other for a certain distance, When abutting against the protruding part, the release part is restricted from moving in a direction away from each other, so as to avoid excessive release of the clamping part.

According to an exemplary embodiment of the present utility model, the ends of the two side walls extend inwardly parallel to the second edge to form a support portion, and the support portion is configured to move in a direction parallel to the first edge. The width is smaller than the width of each clamping portion, so that the external release tool is adapted to engage with the release portion from the outside of the support portion and move the release portions away from each other.

According to an exemplary embodiment of the present invention, the conductive terminal further includes a soldering portion extending outward from the second edge parallel to the base, and the soldering portion is suitable for being soldered to a circuit board.

According to an exemplary embodiment of the present invention, the conductive terminal further includes a guide part disposed between the two clamping arms, and the guide part is configured to prevent the wire from being deviated during insertion.

According to an exemplary embodiment of the present invention, the conductive terminal further includes a transition portion between the second edge and the welding portion, the transition portion is substantially perpendicular to the base portion and the welding portion, the The guide parts extend upward and obliquely towards each other from the side surfaces of the transition part.

According to an exemplary embodiment of the present invention, the clamping part is provided with a sharp part, and the sharp part is suitable for clamping and piercing into the conductor of the wire, so as to prevent the conductor from Insert into the hole and pull out.

According to an exemplary embodiment of the present invention, the conductive terminal further includes a guide part disposed between the two clamping arms, and the guide part is configured to prevent the wire from being deviated during insertion.

According to an exemplary embodiment of the present invention, the guide parts extend obliquely upward from the second edge.

According to another aspect of the present invention, a connector assembly is provided, including a conductive terminal and a circuit board, the circuit board is provided with through holes, and the conductive terminal is the conductive terminal described in any one of the above embodiments. terminals.

According to an exemplary embodiment of the present invention, the connector assembly further includes an external release tool adapted to engage with the release parts and move the release parts away from each other.

According to an exemplary embodiment of the present utility model, the end of the external release tool is a plate-like member.

In some of the foregoing exemplary embodiments according to the present utility model, the conductive terminal can allow the wire to be inserted into the terminal from below, and the wire can be repeatedly plugged and pulled out to facilitate the replacement of the wire; after the release part of the conductive terminal is moved to a suitable position, The movement in the direction away from each other is blocked by the release limiter, so as to prevent the deformation of the conductive terminal caused by excessive release; and the wire is not easy to fall off from the insertion hole after being inserted into conduction.

Other purposes and advantages of the utility model will be apparent through the following description of the embodiments of the utility model with reference to the accompanying drawings, which can help to have a comprehensive understanding of the utility model.

Description of drawings

The utility model will be further described in detail with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic perspective view of a conductive terminal according to a first embodiment of the present invention;

Fig. 2 is a schematic diagram of soldering the conductive terminal shown in Fig. 1 to a circuit board, wherein an external release tool is used to release a wire inserted into the conductive terminal from below;

Fig. 3 is a schematic view of soldering the conductive terminal to the circuit board in Fig. 2 from another angle, wherein an external release tool is used to release the wire inserted into the conductive terminal from below;

4 is a schematic perspective view of a conductive terminal according to a second embodiment of the present invention;

5 is a schematic diagram of soldering the conductive terminal shown in FIG. 4 to a circuit board, wherein an external release tool is used to release a wire inserted into the conductive terminal from below; and

FIG. 6 is a schematic view of soldering the conductive terminal in FIG. 5 to the circuit board from another angle, wherein an external release tool is used to release the wire inserted into the conductive terminal from below.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following descriptions of the embodiments of the utility model with reference to the accompanying drawings are intended to explain the general concept of the utility model, but should not be construed as a limitation of the utility model.

In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

According to the general concept of the utility model, a conductive terminal is provided, which is suitable for electrically connecting a wire to a circuit board, and the circuit board is provided with a through hole, and the conductive terminal includes: a base, a pair of clamping arms and at least one pair of release portions. The base includes two opposite first edges and two opposite second edges, and an insertion hole suitable for inserting a wire is defined on the base, and the insertion hole is aligned with the through hole. A pair of clamping arms extend obliquely towards each other from the two first edges of the base, and the ends of the clamping arms respectively form clamping portions for clamping the wire inserted through the insertion hole. conductor. The release part is adapted to move in a direction away from each other to spread apart a pair of the clamping parts.

first embodiment

A conductive terminal 10A according to a first embodiment of the present invention will be described below with reference to FIGS. 1-3 .

As shown in FIGS. 1-3, in the illustrated embodiment, a conductive terminal 10A suitable for electrically connecting a wire 30 to a circuit board 20 (see FIGS. 2-3) is provided, which includes a base 11A, a pair of Clamping arm 12A and at least one pair of release portions 13A. The circuit board 20 is provided with a through hole to accommodate the conductive terminal 10A partially passing therethrough, and the circuit board 20 is provided with a pad 21 on one surface thereof, so that the conductive terminal 10A is welded on the circuit board 20 ( will be described in detail later).

As shown in FIG. 1 , in the illustrated embodiment, the base portion 11A is flat and includes two opposite first edges and two opposite second edges. Preferably, the first edge and the second edge are perpendicular. The base portion 11A defines an insertion hole extending in the vertical direction, the insertion hole is aligned with the through hole of the circuit board 20, and the conductor of the wire 30 is inserted into the insertion hole and the through hole. A pair of clamping arms 12A extends obliquely upwards from the two first edges of the base portion 11A, respectively. The ends of the pair of holding arms 12A form holding portions 121A, respectively, to hold conductors inserted through the insertion holes and the through holes. The release portion 13A is adapted to move away from each other to spread apart the pair of clamping portions 121A so as to separate the wire 30 from the conductive terminal 10A.

Further, as shown in FIG. 1 , in the illustrated embodiment, the release portion 13A is an arc portion formed on at least one of the two ends of the clamping portion 121A, and the arc portion is deflected toward the outside. Preferably, the conductive terminal 10A includes two pairs of release portions 13A, that is, two pairs of arc portions are formed at both ends of the clamping portion 121A.

As shown in FIG. 1 , in the illustrated embodiment, the conductive terminal 10A further includes a release limiting portion 14A, which is adapted to limit the distance that the release portions 13A move away from each other, so as to prevent the release portion 13A from being stretched apart. When the clamping portion 121A is closed, the clamping portion 121A is excessively released, thereby causing the conductive terminal 10A to deform.

As shown in FIG. 1 , in the illustrated embodiment, the conductive terminal 10A further includes two side walls 15A extending from the second edge of the base 11A along the insertion direction of the wire, and the release limiting portion 14A includes a side wall 15A formed on at least one side. An opening in the wall 15A or an outwardly protruding recess into which the release portion 13A extends in a direction perpendicular to the insertion direction of the wire. In this way, when the external release tool 40 moves the release portions 13A to a suitable position in a direction away from each other, the release portion 13A will abut against the side of the opening or recess, thereby preventing the release portion 13A from continuing to move away from each other. direction to avoid excessive release of the clamping portion 121A.

As shown in FIG. 1 , in the illustrated embodiment, each side wall 15A includes a base side wall 151A extending from the second edge along the insertion direction and two edges extending from both sides of the base side wall 151A. The support arm 152A is formed extending in the insertion direction. The two facing sides of the two supporting arms 152A are configured as release stoppers 14A, and the releasing part 13A extends between the two facing sides of the supporting arms 152A in a direction perpendicular to the insertion direction. When the release portion 13A moves to a proper position in the direction away from each other, it abuts against the two facing side portions of the support arm 152A, preventing the release portion 13A from continuing to move in the direction away from each other.

As shown in FIG. 1 , in the illustrated embodiment, the ends of the two side walls 15A extend inward parallel to the first edge to form a support portion 16A, and the support portion 16A extends outward parallel to the first edge. Extending beyond the side wall 15A forms a weld 17A. The soldering portion 17A is suitable to be soldered to the pad 21 of the circuit board 20 in a surface mount manner, for example.

As shown in FIG. 1 , in the illustrated embodiment, the support portion 16A includes at least one release hole 18A, preferably two release holes 18A. The external release tool 40 is adapted to engage with the release portion 13A through the release hole 18A and move the release portion 13A in directions away from each other.

As shown in FIG. 1 , in the illustrated embodiment, the conductive terminal 10A further includes a guide portion 19A disposed between the two clamping arms 12A. The guide portion 19A is configured to prevent deviation of the guide wire 30 during insertion. As shown in FIG. 1 , the guide portion 19A extends obliquely upward from the side surface of the side wall 15A. In an alternative embodiment, the guide portions extend obliquely upwards from the second edge of the base portion 11A.

As shown in FIGS. 2-3 , the suction nozzle of the vacuum suction device is used to adsorb on the welding portion 17A of the conductive terminal 10A, and the conductive terminal 10A is positioned on the opposite side of the circuit board 20 from the pad 21 with the base 11A (i.e. , in Fig. 2-3 is the way that the base 11A faces downwards) make the base 11A pass through the through hole of the circuit board 20 until the welding part 17A contacts the pad 21 of the circuit board 20, and use the surface mount method to attach the welding part 17A Soldered on the pad 21, at this time the wire 30 can pass through the insertion hole of the conductive terminal 10A from the opposite side (the bottom among FIGS. clamping. When the wire 30 needs to be released, the external release tool 40 passes through the release hole 18A and engages with the release portion 13A, so that the release portion 13A moves away from each other, and the clamping portion 121A holding the wire 30 is stretched, thereby achieving Release of wire 30. When the release parts 13A move to a suitable position in the direction away from each other, the release part 13A abuts against the release limit part 14A, and due to the blocking of the release limit part 14A, the further movement of the release part 13A is restricted, thereby avoiding excessive release. The resulting deformation of the conductive terminal 10A.

In addition, in an exemplary embodiment of the present invention, a spike is provided in the clamping portion, and the spike is suitable for clamping and piercing into the conductor of the wire 30, thereby preventing the conductor from being inserted from the conductive terminal. Pull out the hole. In this way, it is possible to securely hold the conductor of the wire 30 in the insertion hole of the conductive terminal.

second embodiment

The conductive terminal 10B according to the second embodiment of the present invention will be described below with reference to FIGS. 4-6 .

Compared with the conductive terminal 10A of the first embodiment shown in FIGS. 1-3, the main difference of the conductive terminal 10B of the second embodiment shown in FIGS. different. Only the differences between the second embodiment and the first embodiment will be described below, and the other identical or similar parts with the first embodiment will not be repeated.

As shown in FIG. 4 , in the illustrated embodiment, the conductive terminal 10B includes two sidewalls 15B extending from the first edge of the base 11B along the insertion direction of the wire. As shown in FIG. 1 , the release limiting portion 14B is configured as a protrusion extending toward the release portion 13B on both sides of the side wall 15B. When the external release tool 40 is engaged with the release portion 13B so that the release portion 13B moves away from each other for a certain distance, the release portion 13B abuts against the protruding portion, thereby restricting the release portion 13B from continuing to move in a direction away from each other, so as to avoid causing pinching. Holder 121B is over-released.

As shown in FIG. 4 , in the illustrated embodiment, ends of the two side walls 15B extend inward parallel to the second edge to form a support portion 16B. The support portion 16B is configured to have a width in a direction parallel to the first edge smaller than that of each clamping portion 121B, so that the external release tool 40 is adapted to engage with the release portion 13B from the outside of the support portion 16B and to enable The release parts 13B move in directions away from each other.

As shown in FIG. 4 , in the illustrated embodiment, the conductive terminal 10B further includes a welding portion 17B extending outward from the second edge parallel to the base portion 11B. The soldering portion 17B is suitable for soldering to the pad 21 of the circuit board 20 in a surface mount manner, for example.

As shown in FIG. 4 , in the illustrated embodiment, the conductive terminal 10B further includes a guiding portion 19B disposed between the two clamping arms 121B. The guide portion 19B is configured to prevent the guide wire 30 from being deflected during insertion. As shown in FIG. 4 , the conductive terminal 10B further includes a transition portion 20B between the second edge and the solder portion 17B, the transition portion 20B being substantially perpendicular to the base portion 11B and the solder portion 17B. The guide portion 19B extends obliquely upwards from the side of the transition portion 20B. In an alternative embodiment, the guide portions extend obliquely upwards from the second edge of the base portion 11B.

As shown in Figures 4-6, in the illustrated embodiment, the suction nozzle of the vacuum suction device is used to adsorb on the soldering portion 17B of the conductive terminal 10B, and the conductive terminal 10B is positioned on the pad 21 of the circuit board 20 with the base 11B. The way on the opposite side (that is, the way that the base 11B is facing down in FIGS. Solder the soldering part 17B to the pad 21 in the way of mounting. At this time, the wire 30 can pass through the insertion hole of the conductive terminal 10B from the opposite side of the circuit board 20 to the pad 21 (the lower side in FIGS. 4-6 ). And it is clamped by a pair of clamping part 121B. When the wire 30 needs to be released, the external release tool 40 is engaged with the release portion 13B from the outside of the support portion 16B, so that the release portion 13B moves away from each other, and the clamping portion 121B holding the wire 30 is stretched, thereby realizing Release of wire 30. When the release part 13B moves to a suitable position in the direction away from each other, the release part 13B abuts against the release limit part 14B, and due to the blocking of the release limit part 14B, the further movement of the release part 13B is restricted, thereby avoiding excessive release The resulting deformation of the conductive terminal 10B.

In addition, as shown in FIGS. 2-3 and 5-6, in an exemplary embodiment of the present invention, a connector assembly is provided, which is suitable for electrically connecting the wire 30 to the circuit board 20 through the conductive terminals 10A, 10B. superior. As mentioned above, the circuit board 20 includes a through hole with a size slightly larger than that of the bases 11A, 11B of the conductive terminals 10A, 10B to allow the bases 11A, 11B of the conductive terminals 10A, 10B to pass through the through hole. In an exemplary embodiment of the present invention, the connector assembly further includes an external release tool 40 adapted to engage with the release parts 13A, 13B and move the release parts 13A, 13B away from each other. In an exemplary embodiment of the present invention, the end of the external release tool 40 is a plate-like member. In an exemplary embodiment of the present invention, the external release tool 40 may be a screwdriver.

In this way, the conductive terminal of the present utility model can realize that the wire is inserted into the conductive terminal from below, forming a reliable electrical connection between the wire and the circuit board; the wire can be repeatedly inserted and pulled out, which is convenient for replacing the wire; After proper position, the movement in the direction away from each other is blocked by the release limiter, so as to prevent the deformation of the conductive terminal caused by excessive release; and the wire is not easy to fall off from the insertion hole after being inserted into conduction.

Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can improve them, and the structures described in various embodiments do not conflict with each other in terms of structure or principle Under the circumstances, free combination can be carried out, so as to realize more kinds of conductive terminals and connector assemblies on the basis of solving the technical problem of the utility model.

After describing the preferred embodiments of the present utility model in detail, those skilled in the art can clearly understand that various changes and changes can be made without departing from the scope and spirit of the appended claims, and the utility model also Implementation is not limited to the exemplary embodiments set forth in the specification.

It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Additionally, any element references in the claims should not be construed as limiting the scope of the present invention.

Claims (22)

1. A conductive terminal is suitable for electrically connecting a lead to a circuit board, and the circuit board is provided with a through hole, wherein the conductive terminal comprises: a base portion, the base portion includes two opposite first edges and two opposite second edges, and an insertion hole suitable for inserting a wire is defined on the base portion, the insertion hole is aligned with the through hole; a pair of clamping arms extending obliquely towards each other from the two first edges of the base, the ends of the clamping arms respectively forming clamping portions for clamping the wire inserted through the insertion hole conductors; and At least one pair of release parts, the release parts are adapted to move in directions away from each other to spread apart a pair of clamping parts. 2 . The conductive terminal according to claim 1 , wherein the release portion is an arc portion formed on at least one of the two ends of the clamping portion, and the arc portion deflects toward the outside. 3 . 3. The conductive terminal according to claim 1 or 2, further comprising a release limiting portion, the release limiting portion is adapted to limit the distance that the releasing portions move away from each other, so as to avoid the The releasing portion causes the clamping portion to be over-released when the clamping portion is stretched apart. 4 . The conductive terminal according to claim 3 , further comprising two sidewalls extending from the second edge of the base along the insertion direction of the wire, and the release limiting portion includes a portion formed on at least one of the The opening in the side wall or the concave part protruding outward, the release part extends into the opening or the concave part in the direction perpendicular to the insertion direction, when the releasing part moves away from each other for a certain distance abut against the side of the opening or the recessed portion during the distance, thereby preventing the release portions from continuing to move away from each other and avoiding excessive release of the clamping portion. 5. The conductive terminal according to claim 4, wherein each of the side walls includes a base side wall extending from the second edge along the insertion direction and two base side walls extending from the base side wall Support arms formed on both sides extending along the insertion direction, the two facing side portions of the two support arms are configured as the release limiter, and the release portion is in a direction perpendicular to the insertion direction extending between two facing sides of the support arm. 6 . The conductive terminal according to claim 4 , wherein the ends of the two side walls extend inwardly parallel to the first edge to form a support portion, and the support portion is parallel to the first edge to Extending outwardly beyond the sidewall forms a solder portion adapted to be soldered to the circuit board. 7. The conductive terminal according to claim 6, wherein the support portion comprises at least one release hole, an external release tool is adapted to pass through the release hole to engage with the release portion and make the release portion toward moving away from each other. 8. The conductive terminal according to claim 7, comprising two pairs of release portions and two release holes. 9. The conductive terminal according to claim 4, further comprising a guide part disposed between the two clamping arms, the guide part is configured to prevent the wire from being deflected during the insertion process . 10 . The conductive terminal according to claim 9 , wherein the guide portion extends obliquely upwards from the side of the side wall. 11 . 11 . The conductive terminal according to claim 3 , further comprising two side walls extending from the first edge of the base along the insertion direction of the wire, and the release limiting portion is formed on the side walls superior. 12. The conductive terminal according to claim 11, wherein the release limiting portion is configured as a protrusion extending toward the release portion on both sides of the side wall, when the release portions move away from each other abut against the protruding part when moving a certain distance in the direction of each other, thereby restricting the release part from continuing to move in a direction away from each other, and avoiding excessive release of the clamping part. 13. The conductive terminal according to claim 11, wherein the ends of the two side walls extend inwardly parallel to the second edge to form a support portion, and the support portion is configured to be parallel to the second edge. A width in a direction of an edge is smaller than a width of each clamping portion, so that an external release tool is adapted to engage with the release portions from the outside of the support portion and move the release portions away from each other. 14. The conductive terminal according to claim 11, further comprising a soldering portion extending outward from the second edge parallel to the base, the soldering portion being suitable for being soldered to a circuit board. 15. The conductive terminal according to claim 14, further comprising a guide part disposed between the two clamping arms, the guide part is configured to prevent the wire from being deflected during insertion . 16. The conductive terminal according to claim 15, further comprising a transition portion between the second edge and the welding portion, the transition portion is substantially perpendicular to the base portion and the welding portion, so that The guide portion extends obliquely upwards from the side of the transition portion. 17. The conductive terminal according to claim 1 or 2, characterized in that, the clamping portion is provided with a spiked portion, and the spiked portion is suitable for clamping and piercing into the conductor of the wire, so that The conductor is prevented from being pulled out from the insertion hole. 18. The conductive terminal according to claim 1 or 2, further comprising a guide part disposed between the two clamping arms, the guide part is configured to prevent the wire from being deflected during insertion. 19 . The conductive terminal according to claim 18 , wherein the guide portions extend obliquely upward from the second edge. 19 . 20. A connector assembly, comprising a conductive terminal and a circuit board, the circuit board is provided with a through hole, characterized in that the conductive terminal is the conductive terminal according to any one of claims 1-19. 21. The connector assembly according to claim 20, further comprising an external release tool adapted to engage with the release parts and move the release parts away from each other. 22. The connector assembly of claim 21, wherein the external release tool terminates in a plate-like member.