Hot plug connector with high safety

Abstract

The invention discloses a hot plug connector with high safety. The hot plug connector comprises a male head and a female seat which are matched with each other. The male head comprises a male head plastic cement body, and a male head signal terminal, a male head power supply terminal and a male head grounding terminal which are arranged in the male head plastic cement body. The female seat comprises a female seat plastic body, and a female seat signal terminal, a female seat power supply terminal and a female seat grounding terminal which are arranged in the female seat plastic body. The male head power supply terminal is composed of a first male contact terminal and a second male contact terminal which are independent, and the female seat power supply terminal is provided with a first female contact part and a second female contact part. And in the matching process, the terminal groups are sequentially contacted according to a three-stage time sequence. Through sequential control and pre-contact design, plugging arcs are effectively suppressed, the connection safety and reliability are improved, a shielding structure is integrated to enhance the anti-electromagnetic interference capability, and the connector is suitable for high-precision and high-stability electrical connection occasions.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of connectors, in particular to a high-safety hot-plug connector. BACKGROUND

[0002] In modern electrical systems such as industrial control, medical equipment, automotive electronics, etc., hot-plug connectors are widely used as core components to achieve fast connection and maintenance of modular devices. Such connectors need to complete the insertion and extraction of male and female connectors under the live state of the device, and must meet the synchronous transmission requirements of power and signals, and ensure the safety and stability of the operation process, so it has become a key research direction in the field of connection technology.

[0003] The current mainstream hot-plug connector adopts a differentiated terminal design of "long pin - short pin", which reduces the risk of arc generation by controlling the contact timing of power terminals and signal terminals. However, this design relying only on spatial separation has significant limitations: when the insertion and extraction speed is fast, the time difference between the contact and disconnection of long and short pins is greatly compressed, and the strong electric field between the electrodes still easily causes air ionization, and the high-temperature arc generated not only burns the terminal contact surface, but also may cause serious safety accidents such as device fire. At the same time, in the scene of mixed transmission of power and signals, the existing connector generally lacks effective collaborative protection mechanism: on the one hand, the inrush current in the power terminal insertion and extraction moment will interfere with the signal transmission through the shared circuit, causing data errors or system false triggering; on the other hand, the high-frequency interference of the signal circuit also invades the power circuit, causing output voltage fluctuations and affecting the stability of the device operation.

[0004] In terms of safety and reliability, the existing technology also faces multiple challenges: first, when the power terminal is inserted, the large-capacity filter capacitor on the device side will form a short-time low-resistance path, and the inrush current generated may lower the bus voltage, triggering the undervoltage protection of the power management module, causing the system to reset unexpectedly; second, the pre-release function of some connectors is designed simply, mostly directly connected, and cannot realize the smooth on-off of the power supply, which is easy to produce voltage spikes in the insertion and extraction moment; third, the absence or unreasonable design of the shielding structure makes the external electromagnetic interference (EMI) and internal signal crosstalk problems prominent, especially in medical imaging, precision detection and other scenes with strict requirements on signal quality, such interference directly affects the detection accuracy of the device. SUMMARY

[0005] To solve the above problems, the present application provides a high-safety hot-plug connector.

[0006] The main content of the present application includes: A high-safety hot plug connector, comprising a male head and a female seat; the male head comprises a male head plastic body and a male head terminal group arranged in the male head plastic body, the male head terminal group comprises a male head signal terminal, a male head power terminal and a male head ground terminal; the female seat comprises a female seat plastic body and a female seat terminal group arranged in the female seat plastic body, the female seat terminal group comprises a female seat signal terminal, a female seat power terminal and a female seat ground terminal; The male head power terminal comprises a first male contact terminal and a second male contact terminal arranged independently; the female seat power terminal comprises a female seat power body and at least a first female contact part and at least a second female contact part arranged on the female seat power body in an extending manner; In the mating process of the male head and the female seat, the parts of the male head terminal group and the female seat terminal group are electrically contacted in turn according to a three-stage time sequence, the first time sequence is the electrical contact between the male head ground terminal and the female seat ground terminal; the second time sequence is the electrical contact between the first male contact terminal and the first female contact part; the third time sequence is the electrical contact between the second male contact terminal and the second female contact part and the electrical contact between the male head signal terminal and the female seat signal terminal.

[0007] Preferably, the female seat power body is in a plate shape, the first female contact part is in a plate shape, and the second female contact part comprises a second female contact arm, and a second female contact protrusion is formed on the second female contact arm by bending. The first male contact terminal comprises a first male power body and at least one first male contact arm extending on the first male power body, and the first male contact arm has a first male contact protrusion formed by bending; the second male contact terminal comprises a second male power body and at least one second male contact part arranged on the second male power body in an extending manner, and the second male contact part is in a plate shape.

[0008] Preferably, the height of the first female contact part extending in the mating direction is greater than that of the second female contact part.

[0009] Preferably, the male head plastic body comprises a male head accommodating cavity, the male head accommodating cavity comprises a front inner wall and a rear inner wall arranged oppositely and two side inner walls arranged oppositely; the first male contact terminal, the second male contact terminal, the male head ground terminal and the male head signal terminal are arranged in the male head accommodating cavity in a length direction of the male head plastic body in sequence from the middle part of the male head accommodating cavity. First male mounting grooves extending in the mating direction are formed on the front inner wall and the rear inner wall in correspondence; the second male contact part extends along the first male mounting grooves and the end part thereof is limited by the upper end of the first male mounting grooves. The upper part of the side inner wall extends into the male head accommodating cavity and is provided with a male limiting protrusion, and the end part of the first male contact arm is limited below the male limiting protrusion.

[0010] Preferably, the female seat plastic body comprises a female seat accommodating cavity and a female seat island body protruding in the female seat accommodating cavity; the female seat power terminal, the female seat ground terminal and the female seat signal terminal are arranged in the female seat island body; A first female mounting groove is formed in the female seat island body, the first female mounting groove comprises a first female sub-groove and a second female sub-groove, the first female contact part is arranged in the first female sub-groove, and the second female contact part is arranged in the second female sub-groove; When the male head is matched with the female seat, the male head plastic body is arranged in the female seat accommodating cavity, the female seat island body is arranged in the male head accommodating cavity, and the second male contact terminal is inserted into the second female sub-groove and electrically contacts with the second female contact part.

[0011] Preferably, two female power terminals arranged symmetrically are arranged in the first female mounting groove, the second male contact part is inserted between and electrically contacts with the two second female contact protrusions; The first female contact parts of the two female power terminals are arranged in the corresponding first female sub-grooves respectively.

[0012] Preferably, a clearance groove is formed in the short side wall of the female seat island body, the clearance groove is communicated with the outer first female sub-mounting groove, when the male head is matched with the female seat, the male limiting protrusion is arranged in the clearance groove, and the first male contact spring arm electrically contacts with the outer side of the first female contact part.

[0013] Preferably, the male head signal terminal is arranged in the middle part of the male head plastic body, male head power terminals and male head ground terminals are arranged symmetrically at two ends of the male head signal terminal in sequence, and the female seat signal terminal is arranged in the middle part of the female seat plastic body, female seat power terminals and female seat ground terminals are arranged symmetrically at two ends of the female seat signal terminal in sequence.

[0014] Preferably, the shielding assembly further comprises a shielding shell and a shielding spring plate arranged outside the shielding shell, and the shielding spring plate is used for connecting with a metal part of an external device.

[0015] Preferably, the shielding assembly comprises a shielding shell and a shielding spring plate arranged outside the shielding shell, and the shielding spring plate is used for connecting with a metal part of an external device.

[0016] The application provides a hot plug connector with high safety, and has the following beneficial effects: (1) By means of three-stage contact timing of "ground terminal→pre-inserted power terminal→working power + signal terminal", and in combination with the arc absorption design of the pre-inserted terminal, arc damage caused by hot plug is effectively avoided. (2) By adding shielding iron shell and elastic sheet outside the combination of male head and female seat, electromagnetic interference (EMC) is efficiently isolated, the problem of differential signal crosstalk is solved, high-speed signal transmission is stabilized, and the needs of precise scene are adapted; (3) Power supply and signal terminal integrated design, greatly saving board space, reducing customer equipment integration difficulty, and improving space utilization. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the application; Figure 2 is an exploded view of the application; Figure 3 is a schematic diagram of the overall structure of the male head in one embodiment; Figure 4 is a rear view of the male head in one embodiment; Figure 5 is a schematic diagram of the overall structure of the male head in another embodiment; Figure 6 is an assembly drawing of the male head grounding terminal; Figure 7 is a schematic diagram of the structure of the second male contact terminal; Figure 8 is a partial schematic diagram of the male head plastic body; Figure 9 is a schematic diagram of the structure of the female seat; Figure 10 is a top view of the female seat; Figure 11 is an assembly drawing of the female seat grounding terminal; Figure 12 is a schematic diagram of the structure of the female seat power supply terminal; Figure 13 is an assembly drawing of the female seat power supply terminal; Figure 14 is an assembly cross-sectional view of the female seat power supply terminal; Figure 15 is a schematic diagram of the male head power supply terminal and the female seat power supply terminal after matching; Figure 16 is a matching diagram of the first level timing; Figure 17 is a matching diagram of the second level timing; Figure 18 is a matching diagram of the third level timing; Figure 19 is a matching diagram of the third level timing from another angle; Figure 20 is a principle diagram of the matching of the male head and the female seat; Figure 21 is an assembly drawing of the shielding shell and the female seat plastic body; Reference signs: 1-male; 10-male plastic body; 100-male receiving cavity; 100-1- front inner wall; 100-2-rear inner wall; 100-3-side inner wall; 101- first male mounting groove body; 102-male limiting protrusion; 11- male terminal group; 12-male signal terminal; 13-male power terminal; 13-1- first male contact terminal; 13-2-second male contact terminal; 130- first male power body; 131-first male contact arm; 1310-first male contact protrusion; 132-second male power body; 133-second male contact part; 14-male ground terminal; 15-fixed iron foot; 2-female seat; 20-female seat plastic body; 200-female seat receiving cavity; 201-female seat island body; 202-first female mounting groove body; 202-1- first female sub-groove body; 202-2-second female sub-groove body; 203- clearance groove; 204-opening groove; 205-protrusion; 21-female seat terminal group; 22-female seat signal terminal; 23-female seat power terminal; 230-female seat power body; 231-first female contact part; 232-second female contact part; 2320-second female contact protrusion; 24-female seat ground terminal; 3-shielding assembly; 30-shielding shell; 300-clip slot; 31-shielding spring. DETAILED DESCRIPTION

[0018] The technical solutions protected by the application will be described in detail below with reference to the drawings.

[0019] The hot plug connector of the application takes "safety timing control + anti-interference protection" as the core design goal, as shown in Figure 1 and Figure 2 , the hot plug connector as a whole is composed of a male 1 and a female seat 2 connected in pairs, and a shielding assembly 3 covering the combination of the two. Among them, the male 1 is used as a movable end for connecting with the device module, the female seat 2 is installed on the device mainboard or base as a fixed end, and the shielding assembly 3 is used to isolate the internal and external electromagnetic interference; through precise structure adaptation and terminal timing design, the three realize safe plugging under the condition of live, and at the same time guarantee the stable transmission of power and signal; in this embodiment, the shielding assembly 3 is arranged on the outside of the female seat 2.

[0020] Please refer to Figure 2 , Figure 3 and Figure 4The male head 1 includes a male head plastic body 10 and a male head terminal group 11 arranged in the male head plastic body 10. In this embodiment, the male head is a right-angle type male head, which has an overall L-shaped structure and is suitable for fitting the edge, corner or installation scene of a device requiring bending of a wire. In other embodiments, the male head can also be a vertical type. The core components (terminal group, receiving cavity, limiting structure) of the vertical male head and the right-angle male head are completely consistent, and only the shape and installation angle of the male head plastic body are different to adapt to the scene of limited installation space inside the device. The male head plastic body of the vertical male head has a straight cylinder structure instead of an L-shaped structure, and the fitting direction is a vertical direction (i.e., the male head is inserted into the female seat in a direction perpendicular to the PCB of the device), and the height of the plastic body is designed according to the installation space of the device to meet the needs of most compact devices.

[0021] The male head plastic body 11 and the end surface of the female seat 2 are provided with a male head receiving cavity 100. The male head receiving cavity 100 is a groove with one end open, which is composed of a front inner wall 100-1 and a rear inner wall 100-2 arranged opposite to each other, two side inner walls 100-3 arranged opposite to each other, and a bottom wall. The front inner wall 100-1 and the rear inner wall 100-2 extend along the length direction, and the two side inner walls 100-3 extend along the width direction. Figure 3 and Figure 5 The male head terminal group is arranged in the male head mounting cavity 100. Specifically, the male head terminal group includes two groups of male head signal terminals 12 arranged in the middle of the male head receiving cavity 100, male head ground terminals 14 and male head power terminals 13 symmetrically arranged on both sides of the male head signal terminals 12. The male head power terminals 13 are arranged on the outermost side, and the male head ground terminals 14 are arranged between the male head signal terminals 12 and the male head power terminals 13. The three types of terminals are arranged in sequence along the length direction.

[0022] Similarly, as shown in Figure 9 and Figure 10 The female seat 2 includes a female seat plastic body 20, and a female seat receiving cavity 200 is formed on the surface of the female seat plastic body 20 facing the male head 1. A female seat island body 201 is formed in the female seat receiving cavity 200, and a female seat terminal group 11 is arranged in the female seat island body 201. The female seat terminal group 11 includes female seat signal terminals 22 arranged in the middle of the female seat island body 201, and female seat ground terminals 24 and female seat power terminals 23 symmetrically arranged on both sides of the female seat signal terminals 22. The female seat power terminals 23 are arranged on the outermost side and correspond to the male head power terminals 13.

[0023] More specifically, each set of male connector signal terminals comprises multiple units, employing a spring-loaded structure. Corresponding mounting slots are formed on the front sidewall 100-1 and rear sidewall 100-2, allowing the terminals to pass through the bottom wall of the male connector receiving cavity 100 from the rear in the mating direction, and are positioned along the front sidewall 100-1 and rear sidewall 100-2 respectively. Correspondingly, the female connector signal terminals also comprise two sets, respectively disposed in the middle of the two long sides of the female connector island 201, employing a needle-like structure; when the male connector and female connector are properly mated, refer to... Figure 19 The male connector plastic body 10 is inserted into the female connector receiving cavity 200 of the female connector plastic body, and at the same time, the female connector island 201 is inserted into the male connector receiving cavity 100, and the corresponding female connector signal terminal 22 is in electrical contact with the corresponding male connector 12.

[0024] For reference Figures 16-18 The mating timing diagram is shown below. In this example, the male grounding terminal 14 adopts a plate-like structure, while the corresponding female grounding terminal 24 adopts a spring-arm structure. That is, its corresponding main body is installed in the plastic body of the female base, and an installation groove is opened on the female base island, so that the spring-arm part extending on the main body extends into the installation groove, and the head is bent to form a contact protrusion. When the male and female bases are mated to a certain position, the male grounding terminal 14 is inserted into the installation groove where the female base grounding terminal 24 is located, and makes electrical contact with the corresponding contact protrusion of the female base grounding terminal 14. In order to ensure the reliability of the electrical contact between the two, the female base grounding terminals are arranged in pairs, that is, the two female base grounding terminals are symmetrically arranged in pairs, and the contact protrusions of the two female base grounding terminals form a receiving space. The male grounding terminal 14 is inserted into the receiving space to form a reliable electrical contact.

[0025] To enable hot-swappable functionality, when the male connector and female connector are mated, such as... Figure 16 As shown, the male grounding terminal 14 and the female grounding terminal 24 make electrical contact first, while at this time, the male power terminal 13, the male signal terminal 12, the female power terminal 23, and the female signal terminal 22 have not yet made electrical contact; the electrical contact between the male power terminal 13 and the female power terminal 23 follows immediately. Figure 17 As shown, the male signal terminal 12 and the female signal terminal 22 make final electrical contact, as... Figure 18 , 19 As shown.

[0026] While the hot-swappable connector of the present invention can achieve hot-swappable functionality according to the above timing sequence, the structure of the male power terminal 13 is the core inventive point of the present invention. Furthermore, the arrangement of the male power terminal 13 enables a more secure hot-swappable function. Specifically, please refer to... Figure 7 , Figure 8 , Figure 12 , Figure 13 ,Figure 15 as well as Figure 17 The male power terminal 13 consists of an independently configured first male contact terminal 13-1 and a second male contact terminal 13-2. In the second-stage timing sequence of the male connector contacting the female connector, two sub-timing sequences are further included, namely S2.1, where the first male contact terminal 13-1 makes electrical contact with the female connector power terminal 23 before the second male contact terminal 13-2, and can absorb any possible arc first. As the male connector and female connector further mate, in S2.2, the second male contact terminal 13-2 makes electrical contact with the female connector power terminal 23. To further ensure safety, the first male contact terminal 13-1 can be connected to a voltage regulator through an isolation resistor (TBD ohms, i.e., the resistance value can be set according to actual needs). This allows the first male contact terminal 13-1 to absorb the arc only at the moment of insertion. Once the second male contact terminal 13-2 makes contact as a working power source, the first male contact terminal 13-1, as a pre-working power source terminal, stops working, so that even if the pre-working power source terminal is burned out, it will not affect the function of the normal terminal.

[0027] Specifically, Figure 8 As shown, in this embodiment, the first male contact terminal 13-1 includes a first male power supply body 130 and an extended first male contact spring arm 131, on which a first male contact protrusion 1310 is formed by bending. Meanwhile, the second male contact terminal 13-2 includes a second male power supply body 132 and two second male contact portions 133 extending from the second male power supply body 132, wherein the second male contact portions 133 are plate-shaped. Correspondingly, as... Figure 12 As shown, the female power terminal 23 includes a female power body 230, a first female contact 231 extending from the female power body 230, and two second female contacts 232 on both sides. During the second-stage timing sequence of male-female mating, the mating state of the male power terminal 13 and the female power terminal 23 is as follows: Figure 15 As shown, the first male contact protrusion 1310 first makes electrical contact with the first female contact portion 231, while the two second male contacts 133 respectively make electrical contact with the two second female contacts 232; that is, the female power terminal 23 only needs to use a single independent terminal, and the first male contact terminal adopts a spring arm structure, while the first female contact portion 231 that makes electrical contact with it is "plate-shaped" or "needle-shaped"; while the second male contact terminal 13-2 adopts a "plate-shaped" or "needle-shaped" structure, while the second female contact portion 232 that makes contact with it adopts a spring arm structure. Through this "staggered" arrangement, the stability of the electrical contact between the two is ensured.

[0028] Furthermore, in order to ensure the stability of the electrical contact between the two, the female power terminals 23 are also arranged in pairs, that is, the two female power terminals 23 are symmetrically used to receive the insertion of the male power terminal 13, that is, the spring-arm-shaped second female contact portion of the two female power terminals forms a receiving space for receiving the insertion of the second male contact terminal 13-2.

[0029] For more specific details, please refer to Figure 8 and Figure 14 To ensure the accurate execution of the two sub-timing sequences in the second-level timing sequence, a male limiting protrusion 102 is provided extending inward from the inner side wall 100-3 of the male head receiving cavity 100. The end of the first male contact spring arm 131 is restricted below the male limiting protrusion 102. Figure 16 As shown, in the first-level timing stage, when the male grounding terminal makes electrical contact with the female grounding terminal, the male limiting protrusion 102 protects the first male contact spring arm 131 on the one hand, and provides a certain guiding effect for the first female contact part 231 when it is inserted.

[0030] Meanwhile, first male mounting grooves 101 extending along the mating direction are correspondingly formed on the front inner wall 100-1 and rear inner wall 100-2 of the male head receiving cavity 100, such as... Figure 6 and Figure 8 As shown; the second male contact portion 133 extends along the first male mounting groove 101 and its end is limited by the upper end of the first male mounting groove 101; similarly, the male grounding terminal 14 is also installed in the first male mounting groove 101 in the same way. The ends of the male grounding terminal 14 can be provided with corresponding notches to be inserted into the corresponding first mounting groove 101. The middle part of the end is flush with the end face of the male receiving cavity 100. While ensuring the stable installation of the male grounding terminal 14, it can also maintain the flatness of the mating surface.

[0031] The grounding terminal 24 of the female connector can be adopted as follows: Figure 11 The assembly method shown is sufficient to ensure the stability of the assembly.

[0032] A first female mounting groove 202 is provided on the female island body 201. The first female mounting groove 202 includes a first female-child groove 202-1 and a second female-child groove 202-2. The first female contact portion 231 is disposed in the first female-child groove 202-1, and the second female contact portion 232 is disposed in the second female-child groove 202-2. Figure 13 and Figure 14As shown, the second female contact portion 232 is protected by the protrusion at the upper end of the second female-female groove 202-2. In order to achieve electrical contact between the first male contact terminal 13-1 and the first female contact portion 231 of the outermost female power terminal 23, a clearance groove 203 is provided on the short side wall of the female island 201. The clearance groove 203 is connected to the first female-female mounting groove 202-1 located on the outer side. When the male head mates with the female head, the male limiting protrusion 102 is disposed in the clearance groove 203, and the first male contact spring arm 131 makes electrical contact with the outer side of the first female contact portion 231.

[0033] In this embodiment, the shielding component 3 is disposed outside the female connector plastic body 20 because the outermost part of the male and female connector assembly in this embodiment is the female connector plastic body 20. The shielding component 3 includes a shielding housing 30 and a shielding spring 31 that contacts the metal part of the external device. Specifically, as shown... Figure 21 As shown, a corresponding opening groove 204 is provided on the upper part of the outer surface of the female plastic body 20 (the end near the male head is the upper part), and a corresponding shielding shell 30 has a protruding part that can move into the opening groove 204; at the same time, a protruding block 205 is provided on the female plastic body, and a corresponding locking groove 300 is provided on the shielding shell 30. By placing the protruding block 205 in the locking groove 300, the shielding shell 30 and the female plastic body 20 are stably installed; and the shielding spring 31 can be welded to the outside of the shielding shell 30 by welding, so as to transmit the shielded interference signal to the metal part of the external device, effectively isolating electromagnetic interference.

[0034] In addition, two fixing feet 15 are symmetrically arranged on the outer walls of both sides of the male plastic body. The fixing feet fix the male plastic body to the PCB board or housing of the equipment to prevent the male head from loosening during insertion and removal.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A highly secure hot-swappable connector, characterized in that, A male and female connector with an envelope mating system; the male connector includes a male connector plastic body and a male connector terminal group disposed within the male connector plastic body, the male connector terminal group including a male connector signal terminal, a male connector power terminal and a male connector ground terminal; the female connector includes a female connector plastic body and a female connector terminal group disposed within the female connector plastic body, the female connector terminal group including a female connector signal terminal, a female connector power terminal and a female connector ground terminal; The male power terminal includes a first male contact terminal and a second male contact terminal that are independently disposed; the female power terminal includes a female power body and at least a first female contact portion and at least a second female contact portion that extend from the female power body. During the mating process between the male and female connectors, the male connector terminal group and the female connector terminal group make electrical contact sequentially according to a three-level timing sequence. The first timing sequence is the electrical contact between the male connector grounding terminal and the female connector grounding terminal; the second timing sequence is the electrical contact between the first male contact terminal and the first female contact part; and the third timing sequence is the electrical contact between the second male contact terminal and the second female contact part, as well as the electrical contact between the male connector signal terminal and the female connector signal terminal.

2. The high-security hot-swappable connector according to claim 1, characterized in that, The female power supply body is plate-shaped, the first female contact part is plate-shaped, and the second female contact part includes a second female contact spring arm, on which a second female contact protrusion is formed by bending. The first male contact terminal includes a first male power supply body and at least one first male spring arm extending on the first male power supply body, the first male contact spring arm having a bent first male contact protrusion; the second male contact terminal includes a second male power supply body and at least one second male contact portion extending on the second male power supply body, the second male contact portion being plate-shaped.

3. A high-security hot-swappable connector according to claim 2, characterized in that, The height of the first female contact portion extending along the mating direction is greater than that of the second female contact portion.

4. A high-security hot-swappable connector according to claim 3, characterized in that, The male connector plastic body includes a male connector receiving cavity, which includes a front inner wall and a rear inner wall disposed opposite to each other, as well as two side inner walls disposed opposite to each other; the first male contact terminal, the second male contact terminal, the male connector grounding terminal, and the male connector signal terminal are arranged sequentially from the inner side walls along the length direction of the male connector plastic body toward the center of the male connector receiving cavity; The front inner wall and the rear inner wall are respectively provided with a first male mounting groove extending along the mating direction; the second male contact portion extends along the first male mounting groove and its end is limited by the upper end of the first male mounting groove. A male limiting protrusion is provided on the upper part of the inner side wall extending into the male head receiving cavity, and the end of the first male contact spring arm is restricted below the male limiting protrusion.

5. A high-security hot-swappable connector according to claim 4, characterized in that, The female connector plastic body includes a female connector receiving cavity and a female connector island protruding from the female connector receiving cavity; the female connector power terminal, female connector ground terminal and female connector signal terminal are disposed in the female connector island; The female island body is provided with a first female mounting groove, which includes a first female and a female groove and a second female and a female groove. The first female contact part is disposed in the first female and a female groove, and the second female contact part is disposed in the second female and a female groove. When the male connector and the female connector are mated, the male connector plastic body is disposed in the female connector receiving cavity, and the female connector island body is disposed in the male connector receiving cavity; the second male contact terminal is inserted into the second female connector groove and makes electrical contact with the second female contact portion.

6. A high-security hot-swappable connector according to claim 5, characterized in that, Two symmetrically arranged female power terminals are configured in the first female mounting groove; the second male contact portion is inserted between two second female contact protrusions and makes electrical contact with the two second female contact protrusions. The first female contact portion of the two female power terminals is respectively disposed in the corresponding first female and female slots.

7. A high-security hot-swappable connector according to claim 6, characterized in that, A clearance groove is provided on the short side wall of the female island body, and the clearance groove is connected to the first female and male mounting groove located on the outer side; when the male head mates with the female, the male limiting protrusion is disposed in the clearance groove, and the first male contact spring arm makes electrical contact with the outer side of the first female contact part.

8. A high-security hot-swappable connector according to any one of claims 1 to 7, characterized in that, The male signal terminal is located in the middle of the male plastic body, and male power terminals and male ground terminals are symmetrically arranged at both ends of the male signal terminal; the female signal terminal is located in the middle of the female plastic body, and female power terminals and female ground terminals are symmetrically arranged at both ends of the female signal terminal.

9. A high-security hot-swappable connector according to any one of claims 1 to 7, characterized in that, It also includes a shielding component that covers the male and female assembly.

10. A high-security hot-swappable connector according to claim 9, characterized in that, The shielding assembly includes a shielding housing and a shielding spring disposed outside the shielding housing. The shielding spring is used to connect with the metal part of an external device.

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