Self-short-circuit connector, plug-in connector and connector assembly

Abstract

The invention belongs to the field of connecting devices of electrical elements, and particularly relates to a self-short-circuit connector, a plug-in connector and a connector assembly. In order to reduce the size of a connector and avoid needle insertion and kneeling, the connector assembly comprises a self-short-circuit connector and a plug-in connector; the self-short-circuit connector comprises a self-short-circuit connector insulator and a short-circuit plate, the self-short-circuit connector insulator is provided with a guide rod, and the short-circuit plate is provided with a first guide hole; the plug-in connector comprises a plug-in connector insulator, a second guide hole is formed in the plug-in connector insulator, and a guide limiting head with the outer diameter larger than the inner diameter of the first guide hole is arranged at one end of the guide rod. During insertion, the guide limiting head is firstly in guide fit with the second guide hole, and then the pin is inserted into the jack. The guide limiting head can limit the short circuit plate and does not influence the arrangement of the contact pins, so that the size of the connector is reduced; and the guide limiting head can also enable the self-short-circuit connector insulator to be aligned with the plug-in connector insulator, so that kneeling of the contact pin is avoided.

Description

Technical Field

[0001] The invention belongs to the field of connecting devices of electrical components, and in particular relates to a self-shorting connector, a plug-in connector and a connector assembly. Background Art

[0002] In fields such as aerospace that have high requirements for internal circuit stability, highly sensitive connector assemblies are often used. The connector assemblies include self-shorting connectors and plug-in connectors. When the self-shorting connector and the plug-in connector are not plugged in, the self-shorting pins need to self-short-circuit to prevent factors such as static electricity from causing the self-shorting connector to output abnormal signals to the device connected to the self-shorting connector.

[0003] For example, a Chinese invention patent with authorization announcement number CN113871974B and authorization announcement date 2023.09.26 discloses a self-shorting connector assembly. In the above-mentioned self-shorting connector assembly, before the plug (equivalent to the self-shorting connector) and the socket (equivalent to the plug-in connector) are plugged in, the metal contact rods on the outermost circle of the socket (equivalent to the self-shorting pins) are conductively connected to the same short-circuiting plate, thereby short-circuiting the metal contact rods on the outermost circle of the socket; during the process of plugging the plug and the socket, the plug push rod of the plug indirectly pushes the metal contact rod to move through the insulating push rod until the metal contact rod is no longer in contact with the short-circuiting plate. At this time, the metal contact rods on the outermost circle of the socket are no longer short-circuited.

[0004] Before the plug and the socket are plugged together, the metal contact rods on the outermost circle of the socket are short-circuited, which can avoid the potential difference between the metal contact rods and make the socket have a self-short-circuit protection function.

[0005] However, in the above-mentioned self-shorting connector, since an insulating top rod needs to be provided between the plug top rod and the metal contact rod, the metal contact rod of the outermost circle cannot be conductively connected to the plug top rod, and is not suitable for occasions where the metal contact rod of the outermost circle needs to be conductively connected when the plug and the socket are plugged in.

[0006] To solve the above problems, the Chinese utility model patent with the authorization announcement number CN214957654U discloses a multifunctional mixed electrical connector (equivalent to a self-shorting connector assembly), including a plug (equivalent to a self-shorting connector) and a socket (equivalent to a plug-in connector) that cooperate with each other. The plug includes a plug shell, a plug insulator and a short-circuit plate. A plurality of low-frequency short-circuit pins, non-self-shorting pins (equivalent to first contacts) and a plurality of guide pins (equivalent to guide rods) are fixed on the plug insulator. The short-circuit plate is provided with the same number of holes as the low-frequency short-circuit pins. One end of each low-frequency short-circuit pin has a multi-petal elastic spring tongue, which penetrates into the hole and is provided with a bulge. The bulge is used to make conductive contact with the short-circuit plate to make the low-frequency short-circuit pin self-short-circuit when the plug and the socket are not plugged in. The short-circuit board is provided with the same number of first guide holes as the guide pins. The guide pins are inserted into the first guide holes and cooperate with the short-circuit board guides. The guide pins are sleeved with a reset spring that applies a reset force to the short-circuit board. The reset spring is mounted between the plug insulator and the short-circuit board. The plug shell is provided with a hole shoulder, which is used to limit the extreme position of the short-circuit board under the action of the reset spring, thereby preventing the short-circuit board from separating from the low-frequency short-circuit pin. In addition, an insulating sleeve is sleeved on the middle section of the low-frequency short-circuit pin. The socket includes a socket shell and a socket insulator installed on the socket shell. The socket insulator is provided with a low-frequency short-circuit jack, a non-self-short-circuit jack (equivalent to the second contact piece) and an avoidance groove for avoiding the guide pin.

[0007] During the process of plugging the plug into the socket, the low-frequency short-circuit pin is inserted into the low-frequency short-circuit socket, the guide pin is inserted into the avoidance groove, the short-circuit plate cooperates with the socket shell stopper and moves away from the hole shoulder under the guidance of the guide pin, and the reset spring is compressed by the short-circuit plate. During the process of pulling the plug out of the socket, the short-circuit plate is reset under the action of the reset spring, and after the plug is completely pulled out, the short-circuit plate cooperates with the hole shoulder stopper.

[0008] Before the plug and the socket are plugged in, the multi-petal elastic spring tongue of the low-frequency short-circuit pin is located in the through hole. At this time, the short-circuit plate is in conductive contact with each low-frequency short-circuit pin, thereby short-circuiting the low-frequency short-circuit pins. After the plug and the socket are plugged in, the short-circuit plate moves to the insulating sleeve, and the insulating sleeve is located in the through hole. At this time, the short-circuit plate is insulated from the low-frequency short-circuit pins, and the low-frequency short-circuit pins are no longer short-circuited, and the low-frequency short-circuit pins are in conductive contact with the low-frequency short-circuit socket.

[0009] In the above-mentioned multifunctional mixed electrical connector, the plug also includes a screw sleeve provided with a spiral guide groove, and the socket is provided with a pin corresponding to the spiral guide groove. When the plug and the socket are docked, the plug and the socket are first aligned, and the pin is made to enter the starting end of the spiral guide groove. Thereafter, the screw sleeve is rotated to make the pin move along the spiral guide groove to the end of the spiral guide groove, so that the plug can be locked on the socket.

[0010] In the above multifunctional mixed electrical connector, when the plug and the socket are plugged together, only the plug shell and the socket shell guide the movement of the plug, so that each pin (including the self-shorting pin and the non-self-shorting pin) is inserted into the corresponding socket, and the guide pin enters the avoidance groove. When there is no error in the size of the manufactured product, only the plug shell and the socket shell guide it to ensure that each pin is inserted into the corresponding socket; however, in the actual production process, any component will have tolerances, and the dimensions of the plug shell, the socket shell, the plug insulator and the socket insulator all have tolerances. There will also be installation errors when the plug insulator is fixed on the plug shell, and there will also be assembly errors when the socket insulator is fixed on the socket shell. These errors will cause errors between the relative positions of each pin and the plug shell and the designed relative positions, and there will be errors between the relative positions of each socket and the socket shell and the designed relative positions, which will cause the pins and the sockets to be misaligned when plugged together, and the pins will kneel down because they hit the socket insulator.

[0011] At the same time, in the above-mentioned multifunctional mixed electrical connector, a hole shoulder is provided on the shell of the self-shorting connector to limit the extreme position of the short-circuiting plate when not plugged in. Then, in the direction in which the plug and the socket are plugged together, the area where the hole shoulder is located cannot be provided with pins (if the plug and the socket are plugged together in the up and down directions, pins cannot be provided directly above and below the hole shoulder). This results in a low space utilization rate of the plug and the socket. When the number of pins remains unchanged, the cross-sectional area of ​​the self-shorting connector must be increased, resulting in a larger installation space required for the self-shorting connector, which cannot be installed in a small space. Summary of the invention

[0012] The object of the present invention is to provide a connector assembly to solve the technical problem that the existing connector assembly only relies on the shell for guidance. When there is a tolerance between the shell and the corresponding insulator, the pin cannot be inserted into the jack and causes kneeling. In addition, the pin cannot be set in the area where the hole shoulder is located in the direction of the plug and the socket. As a result, the self-shorting connector requires a large installation space and cannot be installed in a small space.

[0013] The object of the present invention is to provide a self-shorting connector to solve the same technical problem mentioned above when used in conjunction with a plug-in connector.

[0014] The object of the present invention is to provide a plug-in connector to solve the same technical problem mentioned above when used in conjunction with a self-shorting connector.

[0015] To achieve the above-mentioned purpose, the technical solution of the connector assembly provided by the present invention is: A connector assembly comprises a self-shorting connector and a plug-in connector adapted to each other; the self-shorting connector comprises a self-shorting connector insulator, a short-circuit plate and a reset spring mounted between the self-shorting connector insulator and the short-circuit plate; the self-shorting connector insulator is provided with a self-shorting pin, a guide rod and a first contact piece; the short-circuit plate is provided with a first guide hole for the guide rod to pass through and cooperate with the guide rod to guide, and a through hole for the self-shorting pin to pass through; the plug-in connector comprises a plug-in connector insulator; the plug-in connector insulator is provided with a second contact piece, a self-shorting pin, a guide rod and a first contact piece one end of the guide rod is provided with a guide limit head with an outer diameter larger than the inner diameter of the first guide hole, the guide limit head is located on the side of the short-circuit plate facing away from the reset spring, the guide limit head has a guide outer peripheral surface, and the plug-in connector insulator is provided with a second guide hole for guiding and matching with the guide outer peripheral surface of the guide limit head, in the process of plugging the self-shorting connector and the plug-in connector, the guide limit head is firstly matched with the second guide hole for guiding, and then the second contact piece is plugged into the first contact piece, and the self-shorting socket is plugged into the self-shorting pin.

[0016] Furthermore, the guide limit head includes a cylindrical section and a conical section located on a side of the cylindrical section away from the short-circuit plate, and the guide outer peripheral surface is formed by the outer peripheral surface of the cylindrical section.

[0017] Furthermore, the guide rod has a stop step that cooperates with the self-shorting connector insulator along the axial stop, and the guide rod has a threaded section on the side away from the guide limit head. The threaded section passes through the self-shorting connector insulator and is installed with a fixing nut. The stop step and the fixing nut are respectively located on both sides of the self-shorting connector insulator, and the guide limit head is provided with a stop plane for tool clamping.

[0018] Furthermore, the plug-in connector also includes a shaft that can rotate around its own axis and move along its own axial direction to promote the movement of the plug-in connector, and the shaft is arranged at the center of the plug-in connector. The self-shorting connector also includes a shaft socket for inserting the shaft; a spiral guide groove is provided on the hole wall of the shaft socket, and the shaft has a guide piece for inserting into the spiral guide groove, or the shaft has a spiral guide groove, and a guide piece for inserting into the spiral guide groove is provided on the hole wall of the shaft socket.

[0019] Furthermore, the end of the spiral guide groove is provided with a locking groove extending axially toward the starting end of the spiral guide groove and for locking with the guide piece, and the plug-in connector or the self-shorting connector also includes a locking elastic piece; the locking elastic piece is sleeved on the shaft rod, and one end of the locking elastic piece is pressed on the shaft rod, and the other end is pressed on the hole wall of the mounting hole for mounting the shaft rod, or the locking elastic piece is arranged in the shaft rod socket, so as to make the shaft rod move in the opposite direction when the guide piece moves to the end of the spiral guide groove, and make the guide piece enter the locking groove and lock with the locking groove.

[0020] The beneficial effects of the connector assembly provided by the present invention are as follows: the present invention is an improved invention. During the plug-in process of the butt-plug connector and the self-short-circuit connector, the guide limit head is first inserted into the second guide hole and matched with the second guide hole guide, and then each pin is inserted into the corresponding socket (the self-short-circuit pin is inserted into the self-short-circuit socket, and the first contact piece and the second contact piece are plugged in). The insulator of the self-short-circuit connector and the butt-plug connector can be aligned through the second guide hole and the guide limit head, thereby ensuring that the pins and sockets on the insulator are aligned, avoiding the shell tolerance, the insulator tolerance and the assembly tolerance of the shell and the insulator causing the pins to be misaligned with the corresponding sockets, and ensuring that each pin can be inserted into each socket.

[0021] During the process of separation of the self-shorting connector and the plug-in connector, the plug-in connector withdraws from the self-shorting connector under the guidance of the guide limit head, and the short-circuit plate is gradually reset under the action of the reset spring. Since the outer diameter of the guide limit head is larger than the inner diameter of the first guide hole, when the short-circuit plate moves to the extreme position, the guide limit head restricts the short-circuit plate from continuing to move, thereby preventing the short-circuit plate from separating from the self-shorting connector.

[0022] During the process of separating the short-circuit connector from the mating connector, when each pin completely withdraws from each socket, the guide limit head still cooperates with the second guide hole to guide and cooperate, thereby ensuring that during the entire process of each pin withdrawing from each socket, the mating connector moves under the guidance of the guide limit head.

[0023] In actual use, the guide limit head is located on the side of the short-circuit board facing away from the self-shorting pin. If the self-shorting connector and the plug-in connector are defined to be plugged in along the up and down directions, pins cannot be set directly above and below the physical part of the short-circuit board, and pins cannot be set at the guide rod. Therefore, pins cannot be set directly above and below the guide limit head. This avoids the guide limit head occupying the position of the pin, reduces the space required for the installation of the self-shorting connector and the plug-in connector, and facilitates the installation of the connector assembly in a small space.

[0024] To achieve the above object, the technical solution of the self-shorting connector provided by the present invention is: A self-shorting connector comprises a self-shorting connector insulator, a short-circuiting plate and a reset spring mounted on the top between the self-shorting connector insulator and the short-circuiting plate, the self-shorting connector insulator is provided with a self-shorting pin, a guide rod and a first contact piece for mating with the second contact piece of a mating connector, the short-circuiting plate is provided with a first guide hole for the guide rod to pass through and for guiding and cooperating with the guide rod, and a through hole for the self-shorting pin to pass through, one end of the guide rod is provided with a guide limit head with an outer diameter greater than an inner diameter of the first guide hole, the guide limit head is located on the side of the short-circuiting plate facing away from the reset spring, and the guide limit head has a guide outer peripheral surface for guiding and cooperating with the second guide hole on the mating connector when the first contact piece and the self-shorting pin are respectively plugged with the second contact piece and the self-shorting socket on the mating connector.

[0025] Furthermore, the guide limit head includes a cylindrical section and a conical section located on a side of the cylindrical section away from the short-circuit plate, and the guide outer peripheral surface is formed by the outer peripheral surface of the cylindrical section.

[0026] Furthermore, the guide rod has a stop step that cooperates with the self-shorting connector insulator along the axial stop, and the guide rod has a threaded section on the side away from the guide limit head. The threaded section passes through the self-shorting connector insulator and is installed with a fixing nut. The stop step and the fixing nut are respectively located on both sides of the self-shorting connector insulator, and the guide limit head is provided with a stop plane for tool clamping.

[0027] Furthermore, the self-shorting connector also includes a shaft rod jack for inserting the shaft rod of the mating connector, and the shaft rod jack is located at the center of the self-shorting connector; the hole wall of the shaft rod jack has a spiral guide groove for inserting the guide member on the shaft rod, or the hole wall of the shaft rod jack is provided with a guide member for inserting into the spiral guide groove on the shaft rod.

[0028] Furthermore, when a spiral guide groove is provided on the hole wall of the shaft rod socket, a locking groove is provided at the end of the spiral guide groove, which is directed toward the starting end of the spiral guide groove and extends axially. The self-short-circuit connector also includes a locking elastic member located in the shaft rod socket. The locking elastic member is used to press on the shaft rod when the guide member moves to the end of the spiral guide groove, or to always press on the shaft rod during the movement of the guide member so as to make the shaft rod move in the opposite direction when the guide member moves to the end of the spiral guide groove, thereby making the guide member enter the locking groove and lock with the locking groove.

[0029] The beneficial effects of the self-short-circuit connector provided by the present invention are as follows: the present invention is an improved invention.

[0030] In actual use, during the process of plugging the butt connector and the self-shorting connector together, the guide stopper is first inserted into the second guide hole and matched with the second guide hole guide, and then each pin is inserted into the corresponding socket (the self-shorting pin is inserted into the self-shorting socket, and the first contact piece and the second contact piece are plugged in). The insulator of the self-shorting connector and the butt connector can be aligned through the second guide hole and the guide stopper, thereby ensuring that the pins and sockets on the insulator are aligned, avoiding the misalignment of each pin and the corresponding socket caused by the shell tolerance, the insulator tolerance and the assembly tolerance of the shell and the insulator, and ensuring that each pin can be inserted into each socket.

[0031] During the process of separation of the self-shorting connector and the plug-in connector, the plug-in connector withdraws from the self-shorting connector under the guidance of the guide limit head, and the short-circuit plate is gradually reset under the action of the reset spring. Since the outer diameter of the guide limit head is larger than the inner diameter of the first guide hole, when the short-circuit plate moves to the extreme position, the guide limit head restricts the short-circuit plate from continuing to move, thereby preventing the short-circuit plate from separating from the self-shorting connector.

[0032] During the process of separating the short-circuit connector from the mating connector, when each pin completely withdraws from each socket, the guide limit head still cooperates with the second guide hole to guide and cooperate, thereby ensuring that during the entire process of each pin withdrawing from each socket, the mating connector moves under the guidance of the guide limit head.

[0033] In actual use, the guide limit head is located on the side of the short-circuit board facing away from the self-shorting pin. If the self-shorting connector and the plug-in connector are defined to be plugged in along the up and down directions, pins cannot be set directly above and below the physical part of the short-circuit board, and pins cannot be set at the guide rod. Therefore, pins cannot be set directly above and below the guide limit head. This avoids the guide limit head occupying the position of the pin, reduces the space required for the installation of the self-shorting connector and the plug-in connector, and facilitates the installation of the connector assembly in a small space.

[0034] To achieve the above object, the technical solution of the plug-in connector provided by the present invention is: A plug-in connector comprises a plug-in connector insulator, on which is provided a second contact piece for plugging with a first contact piece of a self-shorting connector, a pressing end surface for pressing a short-circuiting plate of the self-shorting connector, and a self-shorting socket for inserting a self-shorting pin of the self-shorting connector. The plug-in connector insulator is also provided with a second guide hole for guiding and cooperating with the guide outer peripheral surface of a guide limit head of the self-shorting connector when the second contact piece and the self-shorting socket are respectively plugged with the first contact piece and the self-shorting pin on the self-shorting connector.

[0035] Furthermore, the plug-in connector also includes a rotatable shaft located at the center of the plug-in connector, and the shaft is provided with a spiral guide groove for inserting a guide member on the wall of the shaft plug hole of the self-short-circuit connector, or the shaft is provided with a guide member for inserting into the spiral guide groove on the wall of the shaft plug hole of the self-short-circuit connector.

[0036] Furthermore, when a spiral guide groove is provided on the shaft rod, the plug-in connector also includes a locking elastic member sleeved on the outside of the shaft rod, one end of the locking elastic member presses on the shaft rod, and the other end presses on the wall of the mounting hole for mounting the shaft rod, and the end of the spiral guide groove is provided with a locking groove extending axially in the direction of the starting end of the spiral guide groove, and the locking elastic member is used to make the shaft rod move in the opposite direction when the guide member moves to the end of the spiral guide groove, so that the guide member enters the locking groove and locks with the locking groove.

[0037] The beneficial effects of the plug-in connector provided by the present invention are as follows: the present invention is an improved invention.

[0038] In actual use, during the process of plugging the butt connector and the self-shorting connector, the guide stopper is first inserted into the second guide hole and matched with the second guide hole guide, and then the self-shorting pin is inserted into the self-shorting socket. The insulator of the self-shorting connector and the butt connector can be aligned through the second guide hole and the guide stopper, so as to ensure that the self-shorting pin on the insulator of the self-shorting connector and the self-shorting socket on the insulator of the butt connector are aligned, avoiding the misalignment of the self-shorting socket and the self-shorting socket caused by the housing tolerance, the insulator tolerance and the assembly tolerance of the housing and the insulator, and ensuring that the self-shorting pin can be inserted into the self-shorting socket.

[0039] During the process of separation of the self-shorting connector and the plug-in connector, the plug-in connector withdraws from the self-shorting connector under the guidance of the guide limit head, and the short-circuit plate is gradually reset under the action of the reset spring. Since the outer diameter of the guide limit head is larger than the inner diameter of the first guide hole, when the short-circuit plate moves to the extreme position, the guide limit head restricts the short-circuit plate from continuing to move, thereby preventing the short-circuit plate from separating from the self-shorting connector.

[0040] During the process of separating the self-shorting connector from the mating connector, when the self-shorting pin completely withdraws from the self-shorting socket, the guide limit head still cooperates with the second guide hole to guide it, thereby ensuring that during the entire process of the self-shorting pin withdrawing from the self-shorting socket, the mating connector moves under the guidance of the guide limit head.

[0041] In actual use, the guide limit head is located on the side of the short-circuit board facing away from the self-shorting pin. If the self-shorting connector and the plug-in connector are defined to be plugged in along the up and down directions, pins cannot be set directly above and below the physical part of the short-circuit board, and pins cannot be set at the guide rod. Therefore, pins cannot be set directly above and below the guide limit head. This avoids the guide limit head occupying the position of the pin, reduces the space required for the installation of the self-shorting connector and the plug-in connector, and facilitates the installation of the connector assembly in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a self-shorting connector in a specific embodiment 1 of a connector assembly of the present invention; Figure 2 It is a left side view of the self-shorting connector in the specific embodiment 1 of the connector assembly of the present invention; Figure 3 It is a bottom view schematic diagram of the self-shorting connector in the specific embodiment 1 of the connector assembly of the present invention; Figure 4 for Figure 3 NN-direction view of ; Figure 5 for Figure 4 Schematic diagram of the structure of the medium short circuit board; Figure 6 for Figure 4 Schematic diagram of the structure of the short-circuit pin in the middle; Figure 7 It is a left side view of the plug-in connector in the specific embodiment 1 of the connector assembly of the present invention; Figure 8 The plug-in connector and the plug-in connector in the specific embodiment 1 of the connector assembly of the present invention are Figure 4 A matching schematic diagram; Fig. 9 for Figure 8 Schematic diagram of the structure of the central axis rod; Fig.10 It is a schematic structural diagram of the plug-in connector and the self-shorting connector in the specific embodiment 1 of the connector assembly of the present invention when they are just plugged in; Fig.11 It is a structural schematic diagram of the plug-in connector and the short-circuit connector in the specific embodiment 1 of the connector assembly of the present invention when the plug-in connector and the short-circuit board are just in contact; Fig.12 It is a structural schematic diagram of the plug-in connector and the self-shorting connector in the specific embodiment 1 of the connector assembly of the present invention when the insulating sleeve is about to be inserted into the through hole; Fig.13 It is a schematic structural diagram of the plug-in connector and the self-shorting connector in the specific embodiment 1 of the connector assembly of the present invention after plugging together.

[0043] Description of reference numerals: 1. Self-shorting connector; 11. Pin; 111. Self-shorting pin; 1111. Petal segment; 112. First contact piece; 12. Guide pin; 121. Guide rod; 122. Guide limit head; 1221. Stop plane; 13. Fixing nut; 14. Self-shorting connector insulator; 15. Guide piece; 16. Shaft rod socket; 17. Short-circuit plate; 171. Perforation; 172. First guide hole; 173. Avoidance through hole; 174. Shoulder; 18. Insulating sleeve; 19. Reset spring; 2. Plug-in connector; 21. Handle; 22. Pin; 23. Shaft rod; 231. Spiral guide groove; 232. Locking groove; 24. Second guide hole; 25. Locking elastic piece; 26. Plug-in connector insulator. DETAILED DESCRIPTION

[0044] To facilitate those skilled in the art to understand the inventive concept of the present invention, the core inventive concept of the present invention is introduced below in conjunction with the inventive background of the present invention: In a device, the space reserved for the plug and socket is small, but the types of data to be transmitted between the plug and the socket are large, which results in a large number of contacts (including pins and sockets) on the plug and the socket, and the space occupied by the contacts is large. Therefore, the space reserved for other non-contact parts is small.

[0045] If only a guide hole is provided on one of the plug and the socket, and a guide pin that guides only the guide hole is provided on the other, and a guide rod that provides guidance for the short-circuit plate is also provided, the volume of the plug and the socket will exceed the set standard and cannot be installed in the device. As described in the background technology section, when a hole shoulder is provided to limit the extreme position of the short-circuit plate when not plugged in, the volume of the plug and the socket will also exceed the set standard and cannot be installed in the device.

[0046] Based on the above reasons, the present invention provides a self-shorting connector with a small volume and no kneeling needle. In the self-shorting connector, a guide limit head is provided on one end of the guide rod passing through the first guide hole, and the guide limit head is guided and matched with the second guide hole on the plug-in connector. At the same time, the outer diameter of the guide limit head is larger than the inner diameter of the first guide hole. During the plug-in connector and the self-shorting connector, the self-shorting pin is inserted into the self-shorting socket only after the guide limit head is inserted into the second guide hole and guided and matched with the second guide hole, thereby ensuring that the self-shorting pin can be inserted into the self-shorting socket.

[0047] In the above-mentioned self-shorting connector, the guide pin composed of the guide rod and the guide limit head simultaneously realizes three functions: (1) guiding the short-circuit board; (2) guiding the plug pin; and (3) limiting the extreme position of the short-circuit board when it is not plugged in.

[0048] In actual use, the guide limit head is located on the side of the short-circuit board facing away from the self-short-circuit pin. If the plug and the socket are defined to be plugged in along the up and down directions, the pins cannot be set directly above and below the physical part of the short-circuit board, and the pins cannot be set at the guide rod. Therefore, the pins cannot be set directly above and below the guide limit head. This avoids the guide limit head occupying the position of the pin, reduces the space required for the installation of the self-short-circuit connector and the plug-in connector, and facilitates the installation of the connector assembly in a small space.

[0049] The present invention is further described in detail below in conjunction with embodiments.

[0050] Specific embodiment 1 of the connector assembly provided by the present invention: For the convenience of description, Figure 4 and 8 -13 specifies the up and down directions, but this does not represent the orientation of the connector assembly in the present invention when in use, that is, the up and down directions described in this application may be left and right directions or other directions in actual usage scenarios.

[0051] For the convenience of description, in this embodiment, reference is made to Figure 1-13 As shown, the self-shorting connector 1 is a socket, and the plug connector 2 is a jack. When in use, the plug connector 2 is plugged into the self-shorting connector 1. The first contact 112 on the self-shorting connector 1 is a non-self-shorting pin, and the second contact on the plug connector 2 is a non-self-shorting jack. However, in other specific embodiments, the first contact on the self-shorting connector 1 may also be a non-self-shorting jack, and the second contact on the plug connector 2 may be a non-self-shorting pin.

[0052] like Figure 1-13 As shown, the connector assembly includes a plug-in connector 2 and a self-shorting connector 1 that are adapted to each other. Since there are many pins 11 in the connector assembly, a spiral guide groove 231 and a sliding member 15 adapted to the spiral guide groove 231 need to be provided.

[0053] The self-shorting connector 1 comprises a self-shorting connector insulator 14, a short-circuit plate 17 and a return spring 19 mounted between the self-shorting connector insulator 14 and the short-circuit plate 17. The self-shorting connector insulator 14 is provided with a non-self-shorting pin (i.e., a first contact 112), a plurality of self-shorting pins 111 and at least three guide pins 12. The guide pins 12 comprise a guide rod 121 and a guide stopper 122 located at one end of the guide rod 121 and having a guide outer peripheral surface. The short-circuit plate 17 is provided with a guide stopper 122 for each guide rod 121 to pass through and to contact the guide rod 1 21 guiding the first guide hole 172 for matching and the through hole 171 for each short-circuit pin 111 to pass through, the outer diameter of the guide limit head 122 is larger than the inner diameter of the first guide hole 172, and the guide limit head 122 is located on the side of the short-circuit plate 17 facing away from the reset spring 19, the reset spring 19 is used to apply a reset force to the short-circuit plate 17 to move the short-circuit plate 17 toward the guide limit head 122 when the plug-in connector 2 and the self-short-circuit connector 1 are separated, and the guide limit head 122 is used to limit the extreme position of the movement of the short-circuit plate 17 toward the guide limit head 122.

[0054] The plug-in connector 2 includes a shaft rod 23 which can rotate around its own axis and move along its own axial direction, and a plug-in connector insulator 26. The plug-in connector insulator 26 is provided with a second guide hole 24 which is guided and matched with the guide limit head 122, a self-short-circuit socket which is adapted to the self-short-circuit pin 111, a second contact piece which is plugged into the first contact piece 112, and a pressing end surface for pressing the short-circuit plate 17. The shaft rod 23 is arranged at the center of the plug-in connector 2.

[0055] The self-shorting connector 1 further comprises a shaft rod insertion hole 16 for inserting the shaft rod 23, and the shaft rod insertion hole 16 is arranged at the center of the self-shorting connector 1, the shaft rod 23 has a spiral guide groove 231, and a guide member 15 for inserting into the spiral guide groove 231 is arranged on the hole wall of the shaft rod insertion hole (16). Among them, due to the low structural strength of the insulator, in order to facilitate the installation of the shaft rod 23 and the guide member 15, a first metal mounting cylinder is installed on the insulator 26 of the plug connector, the shaft rod 23 is installed on the first mounting cylinder, and a second metal mounting cylinder is installed on the insulator 14 of the self-shorting connector, and the guide member 15 is arranged on the second mounting cylinder.

[0056] like Figure 10-13 As shown, during the process of plugging the plug connector 2 and the self-shorting connector 1 together: First, if Fig.10As shown, the guide stopper 122 is inserted into the second guide hole 24, and the shaft 23 is rotated and moved downward, so that the guide member 15 is inserted into the starting end of the spiral guide groove 231 (according to the difference in length of the guide stopper 122 and the shaft 23 in the up-down direction, the guide stopper 122 can be inserted into the second guide hole 24 first, and then the guide member 15 can be directly inserted into the spiral guide groove 231; or the guide member 15 can be inserted into the spiral guide groove 231 first, and since the shaft 23 can rotate relative to the second guide hole 24, it is also necessary to align the second guide hole 24 with the guide stopper 122 to avoid the guide stopper 122 being unable to be inserted into the second guide hole 24); Afterwards, if Fig.11 As shown, the shaft 23 is rotated to move the mating connector 2 toward the short-circuit connector 1 (i.e., downwardly), until the mating connector 2 is just pressed against the upper plate surface of the short-circuit plate 17. When the mating connector 2 is just pressed against the short-circuit plate 17, the guide limit head 122 is guided and matched with the second guide hole 24, and each pin 11 is about to be inserted into the corresponding socket; Finally, if Figure 12-13 As shown, the shaft 23 is continuously rotated, and the plug connector 2 moves toward the self-shorting connector 1 (i.e., moves downward) under the guidance of the guide stopper 122 until the guide member 15 moves to the end of the spiral guide groove 231. When the guide member 15 moves to the end of the spiral guide groove 231, each pin 11 is just completely inserted into the corresponding jack. At this time, the insulating sleeve 18 passes through the through hole 171 on the short-circuit plate 17, and the self-shorting pin 111 is insulated from the short-circuit plate 17, so that the self-shorting pin 111 is released from the self-shorting state.

[0057] Reference Figure 1-13 As shown, one end of the self-shorting pin 111 for inserting into the self-shorting hole has a petal section 1111. When the plug-in connector 2 and the self-shorting connector 1 are separated, the petal section 1111 opens and contacts the perforated inner wall of the short-circuiting plate 17, thereby enabling the self-shorting pin 111 to achieve self-shorting.

[0058] Reference Figure 1-13As shown, in different specific embodiments, the number of guide pins 12 can be three, four or more; the shaft 23 can be fixedly connected to the handle 21 through the pin 22 to facilitate the staff to operate the shaft 23, or the end of the shaft 23 is integrally formed with the handle 21, or the upper end of the shaft 23 has a clamping surface (for example, a small section of the upper end of the shaft 23 is a hexagonal prism), and the staff uses a tool such as a wrench to clamp the clamping surface of the shaft 23 and rotate the shaft 23; the reset spring 19 is sleeved on the guide pin 12, and the perforation of the short-circuit plate 17 171 has a hole shoulder 174, and the reset spring 19 is compressed between the hole shoulder 174 and the insulator 14 of the self-shorting connector; when the plug-in connector 2 is just pressed against the short-circuiting plate 17, the self-shorting pin 111 can be just inserted into the self-shorting hole, at this time, the upper end surface of the self-shorting pin 111 is flush with the upper plate surface of the short-circuiting plate 17, or, the self-shorting pin 111 can be inserted into the self-shorting hole after the plug-in connector 2 moves downward a set distance, at this time, the upper end surface of the self-shorting pin 111 is located below the upper plate surface of the short-circuiting plate 17.

[0059] The main difference between the present invention and the prior art is that: in the present invention, one end of the guide pin 12 passes through the first guide hole 172 of the short-circuit plate 17, and the guide pin 12 includes a guide limit head 122 that cooperates with the second guide hole 24 on the insulator 26 of the plug-in connector. The guide limit head 122 is used to limit the extreme position of the movement of the short-circuit plate 17. At the same time, the guide limit head 122 is also used to provide guidance for the process of inserting each pin 11 into the corresponding socket.

[0060] Based on the above differences, during the process of plugging the plug connector 2 and the self-shorting connector 1, when the shaft 23 is rotated until the plug connector 2 is just pressed against the short-circuit plate 17, each pin 11 will be inserted into the corresponding socket, and the second guide hole 24 and the guide limit head 122 are guided and matched, so that when the shaft 23 continues to rotate, it can ensure that the plug connector 2 moves linearly along the set trajectory; then, each pin 11 is inserted into the socket. The self-shorting connector insulator 14 and the plug connector insulator 26 can be aligned through the second guide hole 24 and the guide limit head 122, so as to ensure that the pin 11 located on the self-shorting connector insulator 14 and the socket located on the plug connector insulator 26 are aligned, avoiding the misalignment of the pin 11 and the socket due to the shell tolerance, the insulator tolerance and the assembly tolerance of the shell and the insulator, and ensuring that the pin 11 can be inserted into the socket.

[0061] When the plug-in connector 2 is pulled out from the self-shorting connector 1, the shaft 23 is rotated in the opposite direction, and the plug-in connector 2 withdraws from the self-shorting connector 1 under the guidance of the guide limit head 122. Under the action of the reset spring 19, the short-circuit plate 17 is gradually reset. When the short-circuit plate 17 moves to the limit position, the guide limit head 122 restricts the short-circuit plate 17 from continuing to move, thereby preventing the short-circuit plate 17 from detaching from the self-shorting connector 1. At this moment, the pin 11 is completely withdrawn from the socket, and the guide limit head 122 is still guided and cooperated with the second guide hole 24, thereby ensuring that the plug-in connector 2 moves under the guidance of the guide limit head 122 during the whole process of the pin 11 withdrawing from the socket.

[0062] Reference Figure 4 and 10 -13, in different specific embodiments, each guide pin 12 has an integrally formed thicker section and a thinner section, the thinner section constitutes the guide rod 121, and the thicker section constitutes the guide stopper 122; or, each guide pin 12 is a split structure, and the guide stopper 122 is detachably fixedly mounted on the guide rod 121; or, a part of the guide pins 12 is a split structure, and the other part of the guide pins 12 is an integral structure. Specifically, the guide stopper 122 can be a hemispherical cap, a frustum cap, a conical cap or the like fixedly mounted on the guide pin 12, and the guide stopper 122 can be fixedly mounted on the guide rod by welding, bonding or the like, as long as the guide stopper 122 can cooperate with the second guide hole 24 and can prevent the short-circuit plate 17 from falling out of the short-circuit connector 1.

[0063] Reference Figure 1-13 As shown, as a specific implementation, the guide limit head 122 includes a cylindrical section and a conical section located on the side of the cylindrical section away from the short-circuit plate 17, the guide outer peripheral surface is composed of the outer peripheral surface of the cylindrical section, and the outer peripheral surface of the conical section constitutes the guide surface. When the self-short-circuit connector insulator 14 and the plug-in connector insulator 26 are not fully aligned, the conical section can be inserted into the second guide hole 24, so as to facilitate the plug-in of the self-short-circuit connector 1 and the plug-in connector 2.

[0064] Reference Figure 4 and 10 As shown in Figure 13, the self-short-circuit connector insulator 14 has a mounting hole for installing the guide pin 12, and the side of the guide rod 121 away from the guide limit head 122 has a threaded section, and the threaded section is installed with a fixing nut 13 after passing through the self-short-circuit connector insulator 14. The guide pin 12 also has a stop step that cooperates with the stopper at the bottom of the mounting hole. The guide pin 12 can be fixed on the self-short-circuit connector insulator 14 through the stop step and the fixing nut 13, which is convenient for installation. The guide limit head 122 is provided with a rotation-stopping plane 1221 for tool clamping to facilitate the installation of the guide limit head 122. Of course, the guide pin 12 can also be fixed on the self-short-circuit connector insulator 14 by bonding or other methods.

[0065] Reference Figure 1-13 As shown, in order to better ensure the movement trajectory of the plug connector 2 and avoid kneeling, as a specific embodiment, all guide pins 12 are evenly spaced on the same circumference, and the center of the circumference is located on the axis of the shaft 23, so that the guide pins 12 can better guide the plug connector 2 and ensure that the plug connector 2 moves in a straight line to avoid kneeling. However, in other specific embodiments, refer to Figure 1-13 As shown, the number of guide pins 12 can also be increased to ensure that the plug connector 2 moves in a straight line to avoid kneeling. In this case, the guide pins 12 can be set on multiple circles with different centers.

[0066] Reference Figure 1-13 As shown, in order to simplify the structure, as a specific embodiment, the self-shorting pin 111 and the guide pin 12 are both arranged in the middle of the self-shorting connector 1, and the middle of the short-circuit plate 17 has an escape hole 173 for escaping the shaft rod 23. The structure is simple and the volume of the self-shorting connector 1 is relatively small. However, in other specific embodiments, refer to Figure 1-13 As shown, the self-shorting pins 111 and the guide pins 12 may also be arranged at the edge of the self-shorting connector 1. In this case, the number of the guide pins 12 needs to be increased, and the volume of the self-shorting connector 1 is relatively large.

[0067] Reference Figure 1-13 As shown, in order to conveniently lock the mating connector 2 and the self-shorting connector 1 together after being plugged together, as a specific embodiment, the end of the spiral guide groove 231 is provided with a locking groove 232 extending in the axial direction toward the starting end of the spiral guide groove for locking with the guide member 15, and the mating connector 2 also includes a locking elastic member 25, which is used to move the guide member 15 into the locking groove 232 (even if the shaft 23 moves in the opposite direction) when the guide member 15 moves to the end of the spiral guide groove 231, so that the guide member 15 enters the locking groove 232 and locks with the locking groove 232. The guide member 15 can be a structure such as a staple or a slider.

[0068] Specifically, Figure 1-13 As shown, the locking elastic member 25 is a locking compression spring sleeved on the shaft 23, and the two ends of the locking compression spring are respectively pressed against the handle 21 and the plug connector housing (specifically, the hole wall of the mounting hole in the first mounting cylinder of the plug connector housing), but in other specific embodiments, refer to Figure 1-13As shown, the lower half of the shaft 23 is thicker and forms a step surface. A tension spring sleeved on the shaft 23 can be arranged between the plug-in connector housing and the step surface of the shaft 23, or the self-shorting connector 1 includes a locking elastic member 25, and a compression spring is arranged in the shaft jack 16. When the shaft 23 moves downward, the compression spring is compressed. After the staff releases, the compression spring resets and pushes the shaft 23 to move upward (even if the shaft 23 moves in the opposite direction), thereby causing the guide member 15 to move into the locking groove 232. At this time, the compression elastic member located in the shaft jack 16 constitutes the locking elastic member 25. The compression spring can press on the shaft 23 when the guide member 15 moves to the end of the spiral guide groove 231, or it can always press on the shaft 23 during the movement of the guide member 15.

[0069] The locking groove 232 and the locking elastic member 25 can conveniently lock the relative position of the plug connector 2 and the self-shorting connector 1 after the plug connector 2 and the self-shorting connector 1 are plugged together to prevent the plug connector 2 from accidentally falling off. Figure 1-13 As shown, the inclination angle of the spiral guide groove can also be controlled so that the guide member 15 can directly lock and cooperate with the end of the spiral guide groove when it moves to the end of the spiral guide groove.

[0070] Specific embodiment 2 of the connector assembly provided by the present invention: The object of the present invention is to provide a connector assembly in which a spiral guide groove and a guide member are arranged at different positions.

[0071] Reference Figure 1-13 As shown, the main difference between this embodiment and the specific embodiment 1 is that: in the specific embodiment 1, the spiral guide groove 231 is set on the shaft 23, while in this embodiment, the spiral guide groove 231 is set on the hole wall of the shaft insertion hole 16, the guide member 15 is set on the shaft 23, and the locking groove 232 is located above the end of the spiral guide groove. After the guide member 15 moves to the end of the spiral guide groove, the locking elastic member 25 pushes the shaft 23 upward to make the guide member 15 enter the locking groove 232.

[0072] Specific embodiment 3 of the connector assembly provided by the present invention: The object of the present invention is to provide a connector assembly in which the self-shorting connector is a plug and the mating connector is a socket.

[0073] Reference Figure 1-13 As shown in the Chinese utility model patent with authorization announcement number CN214957654U, the main difference between this embodiment and specific embodiment 1 is that: in specific embodiment 1, the self-shorting connector 1 is a socket and the plug-in connector 2 is a plug, while in this embodiment, the self-shorting connector 1 is a plug and the plug-in connector 2 is a socket. When in use, the self-shorting connector 1 is plugged into the plug-in connector 2.

[0074] Specific embodiment 4 of the connector assembly provided by the present invention: An object of the present invention is to provide a connector assembly with different locking structures.

[0075] Reference Figure 1-13 As shown in the Chinese utility model patent with authorization publication number CN214957654U, the main difference between this embodiment and specific embodiment 1 is that: in specific embodiment 1, the self-shorting connector 1 is in the shape of a rectangular parallelepiped, and the locking structure includes a shaft rod 23; while in this embodiment, the same as the multifunctional mixed electrical connector disclosed in the Chinese utility model patent with authorization publication number CN214957654U is that the self-shorting connector 1 is in the shape of a cylinder, the locking structure includes a locking sleeve, a spiral guide groove 231 is provided on the locking sleeve, and a guide member 15 adapted to the spiral guide groove 231 is provided on the plug-in connector 2.

[0076] Specific embodiment 5 of the connector assembly provided by the present invention: An object of the present invention is to provide another connector assembly with a different locking structure.

[0077] Reference Figure 1-13 As shown, the main difference between this embodiment and the specific embodiment 1 is that: in the specific embodiment 1, the number of pins 11 is large, and the plugging force required for the self-shorting connector 1 and the plug connector 2 to be plugged together is large, and the staff cannot directly insert the plug connector 1 into the plug connector 2, so a shaft with a spiral guide groove is provided in the specific embodiment 1, and the staff can use a small force to screw the shaft, so that the self-shorting connector 1 and the plug connector 2 are plugged together. In this embodiment, the number of pins 11 is small, and the plugging force required for the self-shorting connector 1 and the plug connector 2 to be plugged together is small, so the shaft is not included in this embodiment, and the self-shorting connector 1 and the plug connector 2 are provided with a docking flange, and the staff directly holds the plug connector housing and inserts the plug connector 2 into the self-shorting connector 1, and then the plug connector 2 is locked on the self-shorting connector 1 through bolts and the docking flange.

[0078] Specific embodiments of the self-shorting connector provided by the present invention: Reference Figure 1-6 As shown in Figures 10-13, the specific structure of the self-shorting connector 1 in the present invention is the same as the specific structure of any one of the self-shorting connectors 1 in the specific embodiments 1-5 of the connector assembly of the present invention, and will not be repeated here.

[0079] The specific embodiment of the plug-in connector provided by the present invention is as follows: Reference Figure 7-13As shown, the specific structure of the plug-in connector 2 in the present invention is the same as the specific structure of any one of the plug-in connectors 2 in the specific embodiments 1-5 of the connector assembly of the present invention, and will not be repeated here.

[0080] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connector assembly, comprising a self-shorting connector (1) and a plug-in connector (2) adapted to each other; the self-shorting connector (1) comprises a self-shorting connector insulator (14), a short-circuit plate (17) and a return spring (19) mounted between the self-shorting connector insulator (14) and the short-circuit plate (17); the self-shorting connector insulator (14) is provided with a self-shorting pin (111), a guide rod (121) and a first contact piece (112); the short-circuit plate (17) is provided with a first guide hole (172) for the guide rod (121) to pass through and to guide and cooperate with the guide rod (121) and a through hole (171) for the self-shorting pin (111) to pass through; the plug-in connector (2) comprises a plug-in connector insulator (26); the plug-in connector insulator (26) is provided with a second contact piece, a self-shorting hole and a pressing end surface for pressing the short-circuit plate (17); characterized in that: A guide stopper (122) having an outer diameter greater than an inner diameter of the first guide hole (172) is provided at one end of the guide rod (121); the guide stopper (122) is located on a side of the short-circuit plate (17) facing away from the return spring (19); the guide stopper (122) has a guide outer peripheral surface; a second guide hole (24) is provided on the plug-in connector insulator (26) for guiding and matching with the guide outer peripheral surface of the guide stopper (122); during the process of plugging the self-shorting connector (1) and the plug-in connector (2), the guide stopper first guides and matches with the second guide hole (24); then, the second contact piece is plugged into the first contact piece (112), and the self-shorting socket is plugged into the self-shorting pin (111).

2. The connector assembly according to claim 1, wherein: The guide limit head (122) comprises a cylindrical section and a conical section located on a side of the cylindrical section away from the short-circuit plate (17), and the guide outer peripheral surface is formed by the outer peripheral surface of the cylindrical section.

3. The connector assembly according to claim 1, wherein: The guide rod (121) has a stop step that cooperates with the self-shorting connector insulator (14) to stop along the axial direction. The guide rod (121) has a threaded section on a side away from the guide limit head (122). The threaded section passes through the self-shorting connector insulator (14) and is then installed with a fixing nut (13). The stop step and the fixing nut (13) are respectively located on two sides of the self-shorting connector insulator (14). The guide limit head (122) is provided with a rotation-stopping plane (1221) for clamping a tool.

4. The connector assembly according to any one of claims 1 to 3, characterized in that: The plug-in connector (2) further comprises a shaft (23) which can rotate about its own axis and can move along its own axial direction to promote the movement of the plug-in connector (2); the shaft (23) is arranged at the center of the plug-in connector (2); the self-shorting connector (1) further comprises a shaft insertion hole (16) for inserting the shaft (23); the shaft insertion hole (16) has a spiral guide groove on its hole wall, and the shaft (23) has a guide member for inserting into the spiral guide groove, or the shaft (23) has a spiral guide groove (231), and the shaft insertion hole (16) has a guide member (15) for inserting into the spiral guide groove (231) on its hole wall.

5. The connector assembly according to claim 4, wherein: The end of the spiral guide groove (231) is provided with a locking groove (232) extending in the axial direction and in the direction of the starting end of the spiral guide groove for locking with the guide member (15). The plug connector (2) or the self-shorting connector (1) further comprises a locking elastic member (25); the locking elastic member (25) is sleeved on the shaft rod (23), and one end of the locking elastic member (25) presses on the shaft rod (23) and the other end presses on the hole wall of the mounting hole for mounting the shaft rod (23); or the locking elastic member (25) is arranged in the shaft rod insertion hole (16) so as to make the shaft rod (23) move in the opposite direction when the guide member (15) moves to the end of the spiral guide groove (231), and make the guide member (15) enter the locking groove (232) and lock with the locking groove (232).

6. A self-shorting connector, comprising a self-shorting connector insulator (14), a short-circuiting plate (17), and a return spring (19) mounted between the self-shorting connector insulator (14) and the short-circuiting plate (17), the self-shorting connector insulator (14) being provided with a self-shorting pin (111), a guide rod (121), and a first contact piece (112) for mating with a second contact piece of a mating connector (2), the short-circuiting plate (17) being provided with a first guide hole (172) for the guide rod to pass through and for guiding and cooperating with the guide rod (121), and a through hole (171) for the self-shorting pin (111) to pass through, characterized in that: A guide stopper (122) having an outer diameter greater than an inner diameter of the first guide hole (172) is provided at one end of the guide rod (121); the guide stopper (122) is located on a side of the short-circuit plate (17) facing away from the return spring (19); the guide stopper has a guide outer peripheral surface for guiding and matching with the second guide hole (24) on the plug-in connector (2) when the first contact piece (112) and the self-shorting pin (111) are respectively plugged with the second contact piece and the self-shorting socket on the plug-in connector (2).

7. The self-shorting connector according to claim 6, characterized in that: The guide limit head (122) comprises a cylindrical section and a conical section located on a side of the cylindrical section away from the short-circuit plate (17), and the guide outer peripheral surface is formed by the outer peripheral surface of the cylindrical section.

8. The self-shorting connector according to claim 6, wherein: The guide rod (121) has a stop step that cooperates with the self-shorting connector insulator (14) to stop along the axial direction. The guide rod (121) has a threaded section on a side away from the guide limit head (122). The threaded section passes through the self-shorting connector insulator (14) and is then installed with a fixing nut (13). The stop step and the fixing nut (13) are respectively located on two sides of the self-shorting connector insulator (14). The guide limit head (122) is provided with a rotation-stopping plane (1221) for clamping a tool.

9. The self-shorting connector according to any one of claims 6 to 8, characterized in that: The self-shorting connector (1) further comprises a shaft rod insertion hole (16) for inserting the shaft rod (23) of the plug connector (2), the shaft rod insertion hole (16) being located at the center of the self-shorting connector (1); a spiral guide groove for inserting a guide member on the shaft rod (23) is provided on the hole wall of the shaft rod insertion hole (16), or a guide member (15) for inserting into the spiral guide groove (231) on the shaft rod (23) is provided on the hole wall of the shaft rod insertion hole (16).

10. The self-shorting connector according to claim 9, characterized in that: When a spiral guide groove is provided on the hole wall of the shaft rod insertion hole (16), a locking groove extending axially in the direction of the starting end of the spiral guide groove is provided at the end of the spiral guide groove, and the self-shorting connector (1) further comprises a locking elastic member located in the shaft rod insertion hole (16), the locking elastic member being used to press against the shaft rod (23) when the guide member (15) moves to the end of the spiral guide groove, or to always press against the shaft rod (23) during the movement of the guide member (15) so as to make the shaft rod (23) move in the opposite direction when the guide member (15) moves to the end of the spiral guide groove, thereby making the guide member (15) enter the locking groove and lock with the locking groove.

11. A plug-in connector, comprising a plug-in connector insulator (26), the plug-in connector insulator (26) being provided with a second contact piece for plugging with a first contact piece (112) of a self-shorting connector (1), a pressing end surface for pressing a short-circuiting plate (17) of the self-shorting connector (1), and a self-shorting jack for inserting a self-shorting pin (111) of the self-shorting connector (1), characterized in that: The plug-in connector insulator (26) is also provided with a second guide hole (24) for guiding and cooperating with the guide outer peripheral surface of the guide limit head (122) of the self-shorting connector (1) when the second contact piece and the self-shorting socket are respectively plugged with the first contact piece (112) and the self-shorting pin (111) on the self-shorting connector (1).

12. The plug-in connector according to claim 11, characterized in that: The plug-in connector (2) further comprises a shaft (23) which is located at the center of the plug-in connector (2) and is rotatable, and the shaft (23) is provided with a spiral guide groove (231) for inserting a guide member (15) on the wall of the shaft plug hole (16) of the short-circuit connector (1), or the shaft (23) is provided with a guide member for inserting into the spiral guide groove on the wall of the shaft plug hole (16) of the short-circuit connector (1).

13. The plug-in connector according to claim 12, characterized in that: When the shaft (23) is provided with a spiral guide groove (231), the plug-in connector (2) further comprises a locking elastic member (25) sleeved on the outside of the shaft (23), one end of the locking elastic member (25) pressing against the shaft (23) and the other end pressing against the wall of a mounting hole for mounting the shaft (23), the end of the spiral guide groove (231) being provided with a locking groove (232) extending in the axial direction in the direction of the starting end of the spiral guide groove, the locking elastic member (25) being used to cause the shaft (23) to move in the reverse direction when the guide member (15) moves to the end of the spiral guide groove (231), so that the guide member (15) enters the locking groove (232) and is locked with the locking groove (232).

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