Interface connector

Abstract

The invention belongs to the technical field of auxiliary connection of power equipment, and discloses an interface connector. The interface connector comprises a plug and a socket which are arranged in a pluggable manner; the plug comprises a first shell, two female pins and two elastic pieces, the two female pins are arranged in the first shell at intervals, the two elastic pieces are arranged between the two female pins, the ends, away from each other, of the two elastic pieces are connected with the female pins on the corresponding sides respectively, and the ends, close to each other, of the two elastic pieces can abut against each other to achieve electric connection; the socket comprises a second shell, two male pins and an insulating part, the two male pins are arranged in the second shell and are in one-to-one correspondence with the female pins, and the insulating part is arranged between the two male pins; when the plug and the socket are plugged, the female pin and the male pin are plugged and matched, and the insulating part is clamped between the two elastic sheets. And when the plug is disconnected from the socket, the insulating part is separated from the two elastic sheets firstly, and then the female pin is disconnected from the male pin. According to the interface connector, automatic short circuit of a current loop can be realized in the separation process of the plug and the socket, and the reliability and the safety of a system are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary connection of electric power equipment, and in particular to an interface connector. Background Art

[0002] In the power system, the secondary system of the substation is crucial to ensure the stable operation of the power grid, among which the current secondary circuit is the basis and important component of the secondary system. The substation current secondary circuit refers to the circuit system used to transmit and process secondary signals related to current in the substation.

[0003] As a common electronic device, the interface connector realizes the current transmission function through the contact of the connection terminals. The interface connector usually includes built-in male and female pins, and can realize the conduction or disconnection of current transmission through plug-in connection. The interface connector can be used to connect the secondary circuit of the relay protection cabinet with external test equipment, and can also be used in substation automation equipment. However, during the operation of the power system, when the plug and the socket are disconnected, once the current circuit is open, extremely high voltage will be generated, which will seriously threaten the safety of the power grid and the personal safety of the operators.

[0004] Therefore, there is an urgent need to provide an interface connector to solve the above problems. Summary of the invention

[0005] An object of the present invention is to provide an interface connector which can automatically short-circuit a current loop during the separation process of a plug and a socket, thereby ensuring the reliability and safety of the system.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Interface connectors, including plugs and sockets that can be plugged in and out;

[0008] The plug comprises a first shell, two female pins, two springs and an insulating sheath, wherein the two female pins are arranged in the first shell at intervals, and the two springs are arranged between the two female pins. The springs comprise a first connecting portion, a second connecting portion and a contact portion, wherein the first connecting portion is connected to the second connecting portion and is U-shaped, and the insulating sheath is arranged on a side of the second connecting portion close to the first connecting portion, and an end of the first connecting portion away from the second connecting portion is electrically connected to the female pin, and the end of the second connecting portion forms the contact portion, and the contact portions of the two springs can abut against each other to achieve electrical connection;

[0009] The socket comprises a second housing, two male pins and an insulating member, wherein the two male pins are arranged in the second housing and correspond to the female pins one by one, and the insulating member is arranged between the two male pins;

[0010] When the plug is plugged into the socket, the female pin is plugged into and matched with the male pin, and the insulating member is clamped between the two spring sheets; when the plug is disconnected from the socket, the insulating member is first disconnected from between the two spring sheets, and then the female pin is disconnected from the male pin.

[0011] As an optional solution of an interface connector, the spring includes a third connection part, one end of the third connection part is electrically connected to the female pin on the corresponding side, and the other end of the third connection part is connected to an end of the first connection part away from the second connection part.

[0012] As an optional solution of an interface connector, when two spring sheets are in contact with each other, the contact portions where the two spring sheets are in contact with each other are in point contact.

[0013] As an optional solution of the interface connector, the contact portions of the two spring sheets include arc-shaped protrusions, and point contact is formed between the arc-shaped protrusions where the two spring sheets abut.

[0014] As an optional solution of an interface connector, the spring also includes a transition portion, which is connected between the first connection portion and the second connection portion in an arc transition manner, and a limiting portion is provided in the first shell body, and the limiting portion is located on the concave side of the transition portion.

[0015] As an optional solution of an interface connector, the female pin includes a socket portion and a fourth connecting portion, the socket portion is configured to be plugged into and mate with the male pin, the fourth connecting portion is connected to an end of the socket portion away from the male pin, and the fourth connecting portion is riveted to the third connecting portion.

[0016] As an optional solution for an interface connector, the fourth connection portion is bent upward at one end away from the socket portion to form a fifth connection portion, and one of the fifth connection portion and the first shell is provided with a buckle, and the other is provided with a slot, and the buckle is snap-fitted with the slot.

[0017] As an optional solution of an interface connector, the first housing is covered with a first shell, and the first shell has a boss portion;

[0018] The second shell is covered with a second outer shell, and the second outer shell is provided with an insertion port that is plugged into and matched with the boss portion. The male pin and the insulating member extend into the insertion port. One of the outer wall of the boss portion and the inner wall of the insertion port is provided with a receiving groove, and a guide pin is protruding from the receiving groove. The other of the two is provided with a guide groove that is plugged into and matched with the guide pin.

[0019] As an optional solution of an interface connector, the interface connector also includes a fastener, the first shell is provided with a first mounting hole, and the second shell is provided with a second mounting hole at a position corresponding to the first mounting hole, and the fastener passes through the first mounting hole and the second mounting hole in sequence to fix the first shell to the second shell.

[0020] As an optional solution of the interface connector, the first housing is provided with an auxiliary removal member.

[0021] Beneficial effects:

[0022] The present invention provides an interface connector for realizing automatic short-circuiting of a current loop. When the plug and the socket are plugged in and matched, the male pin and the female pin are first plugged in and matched, and then the insulating part is clamped between two spring pieces, so that the spring pieces are separated, the short circuit is disconnected, and the current loop operates normally. When the plug and the socket are disconnected, during the separation process of the female pin and the male pin, the insulating part is first separated from between the two spring pieces, so that the two spring pieces are abutted, and the short circuit of the current loop is realized, and then the male pin and the female pin are completely separated again, and the current loop is disconnected. The operation steps of "short first and then break" are adopted, that is, the current loop is short-circuited first, and then the short-circuited current loop is disconnected, so as to avoid the situation that the current loop is open during the separation process of the male pin and the female pin, thereby ensuring the reliability and safety of the system, and the operation of the matching process of the plug and the socket is convenient and fast, thereby improving the overall installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the structure of an interface connector provided by an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the interface connector provided by an embodiment of the present invention when it is connected;

[0025] Figure 3 is a schematic diagram of the structure of the interface connector provided by the embodiment of the present invention when it is disengaged;

[0026] Figure 4 It is a schematic diagram of the structure of the cooperation between the female needle and the spring piece provided by an embodiment of the present invention;

[0027] Figure 5 is a schematic structural diagram of an arc-shaped protrusion provided by an embodiment of the present invention;

[0028] Figure 6 is a schematic diagram of the overall structure of the interface connector provided by an embodiment of the invention;

[0029] Figure 7 It is a schematic diagram of the structure of a plug provided by an embodiment of the invention.

[0030] In the figure:

[0031] 1- Plug;

[0032] 10-first housing; 101-pull-out aid; 102-guide groove; 103-plug-in hole; 104-short-circuit hole; 105-fastener; 106-wiring hole; 107-boss portion;

[0033] 11-first housing; 111-buckle;

[0034] 12- female pin; 121- socket portion; 122- fourth connection portion; 123- fifth connection portion; 124- slot;

[0035] 13-spring; 131-third connecting portion; 132-first connecting portion; 133-transition portion; 134-second connecting portion; 135-contact portion; 136-arc-shaped protrusion;

[0036] 14-insulating sheath; 15-limiting part;

[0037] 2-socket;

[0038] 20-second housing; 201-accommodation slot; 202-plug interface;

[0039] 21 - second housing; 22 - male pin; 23 - insulating member. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower" and other positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] In the power system, the secondary system of the substation plays a vital role in ensuring the stable operation of the power grid, and the current secondary circuit is the basis and important component of the secondary system. The substation current secondary circuit refers to the circuit system used to transmit and process secondary signals related to current in the substation. As a common electronic device, the interface connector mainly realizes the current transmission function through the contact of the connection terminals.

[0045] Normally, the interface connector includes a built-in male pin 22 and a female pin 12, which can achieve the conduction or disconnection of current transmission by means of plug-in connection. It can be used for the connection between the secondary circuit of the relay protection cabinet and the external test equipment, and can also be used in substation automation equipment. However, during the operation of the power system, when the plug 1 is disconnected from the socket 2, if the current circuit is open, an extremely high voltage will be generated, which poses a serious threat to the safety of the power grid and the personal safety of the operators. Secondly, the entire operation process requires the operator to use a screwdriver for manual operation. This method has many disadvantages. On the one hand, manual operation is difficult to ensure the reliability of the short circuit of the current circuit. The short circuit may be unstable due to improper operation, thereby increasing the risk of the current circuit being open; on the other hand, manual operation also brings certain hidden dangers to the personal safety of the operators. Once an unexpected situation occurs, the operators may not be able to take effective countermeasures in time.

[0046] To solve the above problems, this embodiment provides an interface connector, such as Figure 1As shown, the interface connector includes a plug 1 and a socket 2 that can be plugged and unplugged. The plug 1 includes a first shell 11, two female pins 12 and two springs 13. The two female pins 12 are arranged in the first shell 11 at intervals. The two springs 13 are arranged between the two female pins 12. The spring 13 includes a first connecting portion 132, a second connecting portion 134 and a contact portion 135. The first connecting portion 132 is connected to the second connecting portion 134 and is U-shaped. One end of the first connecting portion 132 away from the second connecting portion 134 is electrically connected to the female pin 12. The end of the second connecting portion 134 forms a contact portion 135. The contact portions 135 of the two springs 13 can abut to achieve electrical connection. The socket 2 includes a second shell 21, two male pins 22 and an insulating member 23. The two male pins 22 are arranged in the second shell 21 and correspond to the female pins 12 one by one. The insulating member 23 is arranged between the two male pins 22. When the plug 1 is plugged into the socket 2, the female pin 12 and the male pin 22 are plugged into each other, and the insulating member 23 is sandwiched between the two springs 13. When the plug 1 is disconnected from the socket 2, the insulating member 23 is first disconnected from between the two springs 13, and then the female pin 12 and the male pin 22 are disconnected. The special structural design of the spring 13 enables the contact parts 135 of the two springs 13 to be stably abutted, and when the plug 1 is disconnected from the socket 2, the current loop can be short-circuited quickly and effectively to avoid the current loop from being open, thereby improving the safety and reliability of the system.

[0047] The interface connector provided in this embodiment can realize automatic short-circuiting of the current loop. When the plug 1 and the socket 2 are plugged in, the male pin 22 and the female pin 12 are first plugged in, and the insulating member 23 is then clamped between the two spring pieces 13 to separate the spring pieces 13, disconnect the short circuit, and the current loop operates normally. During the plug-in and mating process of the male pin 22 and the female pin 12, the two spring pieces 13 are in abutment in the initial state, and the current loop is short-circuited, avoiding the situation where the current loop is open during the plug-in process of the male pin 22 and the female pin 12. This design ensures the safety of the current loop during the connection process. As the plug-in and mating deepen, the insulating member 23 separates the two spring pieces 13, and the current loop operates normally, ensuring that the connection between the male pin 22 and the female pin 12 is switched to a normal operating state at the right time, ensuring the stable operation of the current loop and the normal operation of the equipment. When the plug 1 and the socket 2 are disconnected, during the separation process of the female pin 12 and the male pin 22, the insulating part 23 first separates from between the two spring pieces 13, so that the two spring pieces 13 abut against each other, and the current circuit is short-circuited. Then the male pin 22 and the female pin 12 are completely separated again, and the current circuit is disconnected. When the plug 1 and the socket 2 are disconnected, the operation steps of "first short and then break" are adopted, that is, the current circuit is short-circuited first, and then the short-circuited current circuit is disconnected, so as to avoid the current circuit from being open during the separation process of the male pin 22 and the female pin 12, thereby ensuring the reliability and safety of the system, and the matching process of the plug 1 and the socket 2 is convenient and fast, thereby improving the overall installation efficiency. Compared with the traditional manual operation method of short-circuiting using a screwdriver, the interface connector automatically realizes the short-circuiting of the current circuit through a mechanical structure, thereby avoiding the problem of the current circuit being not firmly short-circuited due to improper operation, improving the reliability of the current circuit short-circuiting, and reducing the risk of the current circuit being open.

[0048] In this embodiment, the insulating member 23 is made of insulating material, such as plastic. The spring piece 13 adopts an integrated stamping structure, which is beneficial to the structural strength and cost control of the spring piece 13. The spring piece 13 is made of a copper alloy with good electrical conductivity. Figure 4 and Figure 5 As shown, the spring piece 13 also includes a third connection portion 131, one end of the third connection portion 131 is electrically connected to the female pin 12 on the corresponding side, and the other end of the third connection portion 131 is connected to an end of the first connection portion 132 away from the second connection portion 134. Among them, the bending design of the third connection portion 131, the first connection portion 132 and the second connection portion 134 provides a certain elasticity and support force for the spring piece 13, so that it is not easy to deform during repeated plugging and unplugging, ensuring the stability of long-term use.

[0049] In some optional embodiments, the contact portions 135 of the two spring sheets 13 are in line contact. Figure 4As shown, the contact portion 135 is formed by bending, and the free ends of the contact portions 135 of the two springs 13 are inclined in opposite directions, and the contact portion 135 is in a smooth arc shape. When the plug 1 and the socket 2 are plugged in and out, the sharp corners of the contact portion 135 are prevented from getting stuck or scratched, thereby extending the service life of the plug 1 and the socket 2. At the same time, the line contact method can ensure the stable transmission of current between the two springs 13 and ensure the short circuit of the current loop. Since the contact area is relatively small, the contact resistance is also relatively low, thereby reducing energy loss and improving the efficiency of the system.

[0050] In some other optional embodiments, the contact portions 135 of the two spring sheets 13 are in point contact. It is worth noting that it is only necessary to ensure that the contact portions 135 of the two spring sheets 13 are in point contact, and no specific requirements are made on the specific shape of the contact portions 135.

[0051] For example, Figure 5 As shown, the contact portion 135 of the two spring pieces 13 includes an arc-shaped protrusion 136, and the arc-shaped protrusions 136 abutting the two spring pieces 13 are in point contact. The arc-shaped protrusions 136 of the two spring pieces 13 can find the contact point more quickly and accurately, thereby improving the reliability of the contact. Even when subjected to a certain degree of external force interference or vibration, the arc-shaped protrusions 136 can help the contact point remain relatively stable and are less likely to have poor contact. At the same time, since the area of ​​the point contact is very small, the path of the current passing through the contact point is more concentrated, which makes the contact resistance relatively smaller, and the arc-shaped protrusions 136 further optimize the state of the point contact, so that the contact area can be more accurately controlled within a very small range. The design of the arc-shaped protrusions 136 effectively reduces the contact resistance, reduces energy loss, and improves the efficiency of the system.

[0052] Specifically, the arc-shaped protrusions 136 on each spring piece 13 can be set to one, two or more, and can be flexibly set according to actual needs. There is no requirement for the number of arc-shaped protrusions 136. Figure 5 As shown, each contact portion 135 is provided with two arc-shaped protrusions 136. When a problem occurs at one of the contact points, the other contact points can still maintain a certain current transmission, thereby improving the fault tolerance of the system and increasing the connection reliability.

[0053] In this embodiment, an insulating sheath 14 is provided on the side of the second connection portion 134 close to the first connection portion 132. The insulating sheath 14 can effectively prevent the first connection portion 132 and the second connection portion 134 from being tightly attached to each other and causing an accidental short circuit, thereby improving the safety of the product. Optionally, an insulating sheath 14 can be provided on the side of the second connection portion 134 close to the first connection portion 132. Optionally, an insulating sheath 14 can also be provided on the side of the first connection portion 132 close to the second connection portion 134. Optionally, an insulating sheath 14 can also be provided on both sides of the second connection portion 134 close to the first connection portion 132.

[0054] In this embodiment, the spring piece 13 further includes a transition portion 133, which is connected between the first connection portion 132 and the second connection portion 134 in an arc transition manner. A limiting portion 15 is provided in the first housing 11, and the limiting portion 15 is located on the concave side of the transition portion 133. The transition portion 133 is in an arc shape, which makes the spring piece 13 smoother during the force and deformation process, reduces stress concentration, and improves the structural strength and service life of the spring piece 13. The setting of the limiting portion 15 can limit the upward movement of the spring piece 13, and can prevent the contact portions 135 of the two spring pieces 13 from being misaligned up and down due to the insertion of the insulating member 23 during the plug-in process of the plug 1 and the socket 2, so that when the plug 1 is separated from the socket 2, the contact positions of the contact portions 135 of the two spring pieces 13 will not deviate, ensuring the stability and reliability of the contact between the two spring pieces 13.

[0055] In this embodiment, the female pin 12 is made of a copper alloy with good electrical conductivity. The female pin 12 includes a socket portion 121 and a fourth connection portion 122. The socket portion 121 is configured to be plugged with the male pin 22. The fourth connection portion 122 is horizontally connected to the end of the socket portion 121 away from the male pin 22. The fourth connection portion 122 is riveted to the third connection portion 131. On the one hand, during the plugging and unplugging process of the plug 1 and the socket 2 and in daily use, the spring 13 and the female pin 12 can withstand certain external force impact and vibration, and are not prone to loosening or separation, thereby ensuring the stability of current transmission. On the other hand, during the manufacturing process, the riveting method can replace the female pin 12 or the spring 13 separately, reducing the cost of material waste. In another optional embodiment, the female pin 12 and the spring 13 can also adopt an integrated stamping structure to better ensure the reliability of the connection between the female pin 12 and the spring 13. In another optional embodiment, the female pin 12 and the spring 13 can also be fastened with bolts and nuts.

[0056] Furthermore, one end of the fourth connection portion 122 away from the socket portion 121 is bent upward to form a fifth connection portion 123. One of the fifth connection portion 123 and the first shell 11 is provided with a buckle 111, and the other of the two is provided with a slot 124. The buckle 111 and the slot 124 are snap-fitted. The snap-fitting of the buckle 111 and the slot 124 enhances the fixing stability of the female pin 12 in the first shell 11, making it less likely for the female pin 12 to be displaced or loosened, thereby ensuring the stability of the plug-in fit between the female pin 12 and the male pin 22, further ensuring the reliability of current transmission, and also reducing the risk of interference with other components due to the loosening of the female pin 12, thereby improving the overall performance and service life of the plug 1. In this embodiment, if Figure 2 and Figure 3 As shown, the fifth connecting portion 123 is provided with a slot 124, and a buckle 111 is provided at a position corresponding to the slot 124 in the first shell 11, and the buckle 111 is engaged with the slot 124. In another optional embodiment, the fifth connecting portion 123 is provided with a buckle 111, and a slot 124 is provided at a position corresponding to the buckle 111 in the first shell 11, which can also achieve the above effect.

[0057] It is worth mentioning that the structure of the male needle 22 is similar to that of the female needle 12. The only difference is that the male needle 22 is a columnar structure and the female needle 12 is a socket structure. The rest of the structures are the same. The connection method between the male needle 22 and the second shell 21 and the connection method between the female needle 12 and the first shell 11 are also the same, which will not be repeated here.

[0058] In this embodiment, if Figure 6As shown, the first shell 11 covers the first housing 10, wherein the first housing 10 covers the other sides of the first shell 11 except the upper side, and the first housing 10 has a boss portion 107, and the boss portion 107 covers the socket portion 121 of the female pin 12 and the outside of the spring 13. The second shell 21 covers the second shell 20, and the second shell 20 is provided with a plug interface 202 that is plugged with the boss portion 107, and the male pin 22 and the insulating member 23 extend into the plug interface 202. One of the outer wall of the boss portion 107 and the inner wall of the plug interface 202 is provided with a receiving groove 201, and a guide pin (not shown) is protruding from the receiving groove 201, and the other of the two is provided with a guide groove 102 that is plugged with the guide pin. When the plug 1 and the socket 2 are plugged in, the boss 107 of the first shell 10 is plugged into the plug port 202 of the second shell 20. During the plugging process, the guide pin and the guide slot 102 cooperate, so that the plug 1 and the socket 2 can be accurately positioned and guided when connected, and can be quickly and accurately aligned and connected. At the same time, the configuration of the first shell 10 and the second shell 20 provides additional protection for the internal housing and electrical components, preventing collisions with external objects, dust and moisture from intruding, reducing the risk of interface connector failure, and improving the safety and reliability of the product.

[0059] Specifically, in this embodiment, Figure 6 As shown, the inner wall of the plug port 202 is provided with a receiving groove 201, a guide pin is protruding from the receiving groove 201, and the outer wall of the boss portion 107 is provided with a guide groove 102 that is plugged with the guide pin. In another optional embodiment, the outer wall of the boss portion 107 is provided with a receiving groove 201, a guide pin is protruding from the receiving groove 201, and the inner wall of the plug port 202 is provided with a guide groove 102 that is plugged with the guide pin, which can also achieve the above effect.

[0060] In this embodiment, the first shell 11 and the second shell 21 are both made of flame-retardant uniform material, which can improve the insulation dielectric strength and safety of the connector.

[0061] like Figure 6 and Figure 7 As shown, the boss portion 107 is provided with a plug hole 103 corresponding to the plug hole portion 121, and a short-circuit hole 104 that can be plugged with the insulating member 23. When the plug 1 is plugged with the socket 2, the male pin 22 passes through the plug hole 103 and plugs with the female pin 12, and the insulating member 23 passes through the short-circuit hole 104 and is clamped between the two spring pieces 13, thereby achieving accurate positioning and connection between the plug 1 and the socket 2.

[0062] like Figure 6 and Figure 7As shown, two sides of the first housing 10 are provided with auxiliary extraction members 101, which are used for plugging and unplugging the plug 1 and the socket 2, making the plugging and unplugging process smoother and faster, and improving the use efficiency.

[0063] like Figure 6 and Figure 7 As shown, the first housing 10 is provided with a first mounting hole, and the second housing 20 is provided with a second mounting hole at a position corresponding to the first mounting hole, and the fastener 105 passes through the first mounting hole and the second mounting hole in sequence to fix the first housing 10 with the second housing 20. This design enhances the stability of the overall structure of the plug 1 and the socket 2, and can effectively resist the impact and vibration of external forces during use, ensuring that the connection is not loose, and further improving the reliability of the connection.

[0064] In addition, a wiring hole 106 is provided on the upper side of the first shell 11 for connecting to an external wire. The provision of the wiring hole 106 facilitates the connection with the external wire, making the installation and wiring of the equipment more convenient. After the external wire is inserted into the wiring hole 106, the metal core of the external wire can contact the female pin 12, so that the current can be smoothly conducted between the external wire and the female pin 12. Similarly, a wiring hole (not shown) is also provided on the lower side of the second shell 21, so that after the external wire is inserted into the wiring hole, its metal core can contact the male pin 22, so that the current can be smoothly conducted between the external wire and the male pin 22. In this way, when the male pin 22 is plugged into the female pin 12, the connection between the secondary circuit of the relay protection cabinet and the current circuit of the external test equipment can be realized.

[0065] In this embodiment, the interface connector may include multiple groups of plugs 1 arranged side by side and sockets 2 corresponding to the plugs 1 one by one, which is suitable for multi-channel current loops and can meet the connection requirements of complex systems. The number of plugs 1 and sockets 2 is not specifically limited here and can be adaptively set according to actual needs.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An interface connector, characterized in that It comprises a plug (1) and a socket (2) which are pluggable; The plug (1) comprises a first shell (11), two female pins (12), two spring sheets (13) and an insulating sheath (14); the two female pins (12) are arranged in the first shell (11) at intervals; the two spring sheets (13) are arranged between the two female pins (12); the spring sheet (13) comprises a first connecting portion (132), a second connecting portion (134) and a contact portion (135); the first connecting portion (132) and the second connecting portion (134) are connected to form a U-shaped structure; the insulating sheath (14) is provided on a side of the second connecting portion (134) close to the first connecting portion (132); an end of the first connecting portion (132) away from the second connecting portion (134) is electrically connected to the female pin (12); the end of the second connecting portion (134) forms the contact portion (135); the contact portions (135) of the two spring sheets (13) can abut against each other to achieve electrical connection; The socket (2) comprises a second housing (21), two male pins (22) and an insulating member (23); the two male pins (22) are arranged in the second housing (21) and correspond one-to-one to the female pins (12); and the insulating member (23) is arranged between the two male pins (22); When the plug (1) is plugged into the socket (2), the female pin (12) and the male pin (22) are plugged into each other, and the insulating member (23) is sandwiched between the two spring sheets (13); when the plug (1) and the socket (2) are disconnected, the insulating member (23) is first disconnected from between the two spring sheets (13), and then the female pin (12) and the male pin (22) are disconnected.

2. The interface connector according to claim 1, characterized in that: The spring piece (13) further comprises a third connecting portion (131), one end of the third connecting portion (131) being electrically connected to the female pin (12) on the corresponding side, and the other end of the third connecting portion (131) being connected to an end of the first connecting portion (132) away from the second connecting portion (134).

3. The interface connector according to claim 1, characterized in that: When the two spring sheets (13) are in contact with each other, the contact portions (135) where the two spring sheets (13) are in contact with each other are in point contact.

4. The interface connector according to claim 3, characterized in that: The contact portions (135) of the two spring sheets (13) include an arc-shaped protrusion (136), and point contact is achieved between the arc-shaped protrusions (136) abutting against each other of the two spring sheets (13).

5. The interface connector according to claim 1, characterized in that: The spring piece (13) further comprises a transition portion (133), wherein the transition portion (133) is connected between the first connection portion (132) and the second connection portion (134) in an arc transition manner, and a limiting portion (15) is provided in the first shell (11), wherein the limiting portion (15) is located on the concave side of the transition portion (133).

6. The interface connector according to claim 2, characterized in that: The female pin (12) comprises a socket portion (121) and a fourth connecting portion (122), wherein the socket portion (121) is configured to be plugged into and matched with the male pin (22), the fourth connecting portion (122) is connected to an end of the socket portion (121) away from the male pin (22), and the fourth connecting portion (122) is riveted to the third connecting portion (131).

7. The interface connector according to claim 6, characterized in that: One end of the fourth connection portion (122) away from the insertion hole portion (121) is bent upward to form a fifth connection portion (123); one of the fifth connection portion (123) and the first shell (11) is provided with a buckle (111); the other of the fifth connection portion (123) and the first shell (11) is provided with a clamping groove (124); the buckle (111) is clamped and matched with the clamping groove (124).

8. The interface connector according to any one of claims 1 to 7, characterized in that: The first shell (11) covers the first outer shell (10), and the first outer shell (10) has a boss portion (107); The second shell (21) is covered with a second outer shell (20), and the second outer shell (20) is provided with an insertion port (202) that is plugged into and matched with the boss portion (107). The male needle (22) and the insulating member (23) extend into the insertion port (202), and one of the outer wall of the boss portion (107) and the inner wall of the insertion port (202) is provided with a receiving groove (201), and a guide pin is protruding from the receiving groove (201), and the other of the two is provided with a guide groove (102) that is plugged into and matched with the guide pin.

9. The interface connector according to claim 8, characterized in that: The interface connector further comprises a fastener (105); the first housing (10) is provided with a first mounting hole; a second mounting hole is provided on the second housing (20) at a position corresponding to the first mounting hole; the fastener (105) penetrates the first mounting hole and the second mounting hole in sequence to fix the first housing (10) and the second housing (20) together.

10. The interface connector according to claim 8, characterized in that: The first housing (10) is provided with a pull-out aid (101).

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