Plug-in detection connector

Abstract

The present application relates to the technical field of connecting device with built-in switch, in particular to a plug-in self-detection connector. The plug-in self-detection connector improves the existing connector. When the plug-in self-detection is needed, the travel switch assembly is integrated on the shell of the connector. The driving part of the travel switch assembly is arranged on the radial outer side of the locking sleeve. The driving part has a driven end extending to the front side of the shell and the radial outer side of the locking sleeve. When the adapter connector is inserted, the driven end is pushed back, the trigger end retreats with the driven end and changes the on-off state of the travel switch. When the adapter connector is pulled out, the reset spring pushes the driving part back to the front and changes the on-off state of the travel switch again, so that the plug-in self-detection of the connector can be realized. Moreover, the implementation is completely different from the existing connector structure for realizing the plug-in self-detection, does not change the electrical interface of the connector, and can meet the size requirements of the electrical interface.

Description

Technical Field

[0001] This invention relates to the field of connection device technology with built-in switches, and more particularly to plug-in self-detection connectors. Background Technology

[0002] Currently, many applications require connectors capable of self-detecting insertion and removal status. These connectors often integrate limit switches inside the socket. When the plug is inserted into the compatible socket, the limit switch contacts are triggered, thus obtaining a signal indicating that the socket and plug are engaged. When the plug is removed from the socket, the limit switch contacts are deactivated, thus obtaining a signal indicating that the socket and plug are disengaged. For example, a socket and industrial connector disclosed in Chinese Utility Model Patent No. CN214280355U has a guide rod movably installed in the insertion direction within the internal body of the socket (i.e., the housing containing an insulator and a plug-in component installed within the insulator). A limit switch is located on the rear side of the internal body inside the socket housing. The front end of the guide rod is a free end, and the rear end cooperates with the contact of the limit switch. When the plug is inserted into the socket, the guide rod is pushed back by the plug and triggers the limit switch, thereby obtaining information about the plug and socket engagement status.

[0003] Currently, there is a requirement for self-detection of insertion / removal status in connectors between aircraft and suspension systems. However, these connectors typically consist of a housing and an internal body housed within the housing. The internal body includes an insulator and an electrical connector mounted within it. The front end of the internal body protrudes to form a cylindrical insertion section. The front end of the adapter's housing has a cylindrical insertion cavity, within which the plug's internal body is located. When the plug and socket are engaged, the cylindrical insertion cavity fits onto the socket's insertion section, and simultaneously, the internal bodies of the plug and socket engage to achieve electrical continuity. The socket housing has a locking sleeve extending forward and backward to engage with the threaded locking nut on the adapter. By tightening the locking nut and locking sleeve, the plug and socket are held in a locked state.

[0004] To ensure connector compatibility with various mounting surfaces, the electrical interface of the socket must conform to the GJB1188 standard. Therefore, if the socket's self-detection during insertion / removal is implemented using the method disclosed in the prior art, integrating a guide rod that mates with a limit switch within the socket's internal structure, the internal dimensions would increase, failing to meet design standards and user requirements. Thus, a pressing need arises to achieve self-detection during insertion / removal without compromising the socket's internal dimensions. Summary of the Invention

[0005] The purpose of this invention is to provide a self-detecting connector for plugging and unplugging, in order to achieve self-detection of plugging and unplugging, adding structural components to the internal body of a type of connector, such as connectors between aircraft and suspended objects, which requires certain size specifications, will result in the internal body size exceeding the specifications.

[0006] The self-detecting connector of the present invention includes a housing and an inner body. The connector also includes a limit switch assembly installed in the housing. The limit switch assembly includes a limit switch and a driving component. The driving component is located radially outside the locking sleeve and has a driven end extending to the front side of the housing and radially outside the locking sleeve, and a trigger end located behind the driven end for cooperating with the limit switch. The driving component is provided with a return spring that provides it with an elastic force toward the front. The housing has an anti-disengagement blocking structure to stop the driving component. The driven end of the driving component is used to be pushed back when the adapter connector is inserted. The trigger end moves back with the driven end and changes the on / off state of the limit switch. When the adapter connector is pulled out, the return spring pushes the driving component forward to the limit position and changes the on / off state of the limit switch again.

[0007] Furthermore, the driving component includes a driven ring body and a mounting rod connected to the rear side of the driven ring body. The driven ring body is arranged around the inner main body and its front end constitutes the driven end. The outer shell is provided with a mounting rod through hole for the mounting rod to pass through from front to back. The outer shell is provided with a mounting rod blocking structure for blocking the mounting rod. The mounting rod blocking structure constitutes the anti-detachment blocking structure. At least a portion of the rear end of the mounting rod is provided with the trigger end.

[0008] Furthermore, the return spring is a compression spring that acts between the rear end of the mounting rod and the outer casing.

[0009] Furthermore, the mounting rod has a stepped hole that is smaller at the front and larger at the back, and the mounting rod has an outer flange at the rear. The mounting rod has a stop structure that is a stepped surface of the stepped hole, and it is used to stop and cooperate with the outer flange.

[0010] Furthermore, the driven ring body includes a connecting ring body and a rotating ring body. The rotating ring body is rotatably disposed on the front side of the connecting ring body around its own axis. The connecting ring body is connected to the mounting rod, and the front end face of the rotating ring body constitutes the driven end.

[0011] Furthermore, the driven ring body includes a thrust bearing, wherein the front thrust washer of the thrust bearing constitutes a rotating ring body and the rear thrust washer constitutes the connecting ring body. The driven ring body also includes a retaining member that maintains a defined front-to-back distance between the two thrust washers.

[0012] Furthermore, the connecting ring body is provided with a radially penetrating screw hole and a connecting hole extending rearward from the screw hole to the rear end face of the connecting ring body. The front end of the mounting rod extends into the screw hole from the connecting hole, and a locking nut is connected to the end extending into the screw hole.

[0013] Furthermore, the outer casing includes a main housing component and a tail shell component connected to the rear side of the main housing component. The main housing component includes an annular main housing surrounding the outer side of the inner main body, a locking sleeve connected to the main housing, and the tail shell component connected to the rear side of the main housing to cover the inner main body inside. The mounting rod and the limit switch are both mounted on the main housing.

[0014] Furthermore, the limit switch includes a switch body and a shorting member. The switch body is fixed on the main housing, and the shorting member is connected to the trigger end or movably mounted on the switch body. The switch body has a pair of wiring components. The shorting member is used to contact or disconnect the wiring components when the triggered end actuates, so as to switch the on / off state of the pair of wiring components. The switch body and the mounting rod are spaced apart in the front-to-back direction.

[0015] Furthermore, the annular main housing is provided with a receiving cavity for accommodating the limit switch, and the limit switch is located in the receiving cavity.

[0016] Furthermore, the receiving cavity is radially connected to the internal space of the annular main shell.

[0017] Furthermore, the switch body is a plate-shaped body, and a guide structure is provided on the plate-shaped body at a position corresponding to the front and rear of the mounting rod. The paired wiring components are arranged on the side of the guide structure on the plate-shaped body. The trigger end includes a shorting component mounting plate fixed to the rear end of the mounting rod. The shorting component is fixed on the shorting component mounting plate. The shorting component is a U-shaped pin with the opening facing backward. The two ends of the U-shaped pin are respectively corresponding to the front and rear of the two paired wiring components. When the mounting rod moves backward to the extreme position, the U-shaped pin shorts the paired wiring components. When the mounting rod moves forward to the extreme position, the U-shaped pin disengages from the paired wiring components.

[0018] Furthermore, paired connectors are arranged on the radial inner side of the guide structure on the plate-shaped body, with the two parallel sides of the U-shaped pins spaced side by side in the circumferential direction.

[0019] Furthermore, a blind hole is provided at the rear end of the mounting rod, and the guide structure is a guide post that cooperates with the blind hole, with the corresponding return spring mounted on the guide post.

[0020] Furthermore, the switch body is a cylindrical body, the rear end of the mounting rod extends into the cylindrical body and forms a trigger end, the rear end of the corresponding reset spring abuts against the cylindrical body, the cylindrical body has a floating inner cavity directly behind the mounting rod, the shorting member is movably installed in the floating inner cavity in the front-back direction, the shorting member moves with the trigger end at least during part of the movement stroke of the trigger end, and the paired wiring members are set in the cavity wall of the floating inner cavity and have a portion that leaks into the floating inner cavity.

[0021] Furthermore, the paired connectors are exposed on the front wall of the floating inner cavity. The floating inner cavity is equipped with a retaining spring that provides elastic force to the shorting connector. When the trigger end moves backward and drives the shorting connector to move, the shorting connector disengages from the paired connectors.

[0022] Furthermore, after the trigger end moves backward a certain distance, it causes the shorting component to move and disengage from the paired connectors.

[0023] Furthermore, an insulating transmission rod is movably installed in the cavity wall of the floating inner cavity in the front-to-back direction. The insulating transmission rod is fixedly connected to the shorting member. The mounting rod is located in front of the insulating transmission rod and drives the shorting member to move by pushing the insulating transmission rod.

[0024] Furthermore, the short connector is a stepped shaft structure, with a connecting hole on the end face of the large-diameter section. One end of the insulating transmission rod extends into the connecting hole and connects to the short connector, keeping the spring sleeved outside the small-diameter section and pressing against the stepped surface. Paired connectors are located on opposite sides of the insulating transmission rod, and the end face of the large-diameter section contacts the paired connectors.

[0025] Furthermore, the connector includes a resilient contact extending forward and backward, with the rear end of the resilient contact protruding from the front wall of the floating inner cavity.

[0026] Furthermore, the connector is a U-shaped fold structure. In the two parallel sections of the U-shaped fold structure, the end of the first parallel section passes radially outward from the floating inner cavity and protrudes from the rear end of the columnar body for wiring, and the end of the second parallel section protrudes from the front cavity wall of the floating inner cavity.

[0027] Furthermore, the limit switch includes a switch body and a shorting member. The switch body is fixed on the main housing component, and the shorting member is connected to the trigger end or movably mounted on the switch body. The switch body has a pair of wiring components. The shorting member is used to contact or disconnect the wiring components when the triggered end actuates, so as to switch the on / off state of the pair of wiring components. The switch body and the mounting rod are spaced apart in the radial or circumferential direction.

[0028] Furthermore, the switch body is a block-shaped body, the rear end of the mounting rod extends to the side of the block-shaped body and forms a trigger end, a pair of wiring components extend from the side of the block-shaped body corresponding to the mounting rod, a shorting component is installed on the trigger end and has a contact surface facing the pair of wiring components, when the mounting rod moves backward to the extreme position, the contact surface shorts the pair of wiring components, when the mounting rod moves forward to the extreme position, the contact surface disengages from the pair of wiring components.

[0029] Furthermore, the switch body is located radially inside the mounting rod.

[0030] Furthermore, the rear end of the mounting rod is a D-shaped cut-off structure of a circular rod, with the block-shaped main body located on the side corresponding to the plane of the cut-off circular rod. Pairs of connectors are exposed facing the plane of the cut-off circular rod, and the contact surface of the short connector is on the plane of the cut-off circular rod.

[0031] Furthermore, the shorting member is a collar structure with a D-shaped cross-section, and the shorting member is fitted onto the cut semi-circular rod.

[0032] Furthermore, the switch body is an arc-shaped strip extending circumferentially and located radially inside the mounting rod. Pairs of connectors are fixedly spaced within the switch body in the circumferential direction. The trigger end includes a shorting connector mounting plate fixed to the rear end of the mounting rod. The shorting connector is fixed on the shorting connector mounting plate and is a U-shaped contact with its opening facing forward. The two ends of the U-shaped contact correspond to the two connectors in the pair. When the mounting rod moves forward to its limit position, the U-shaped contact short-circuit the pair of connectors. When the mounting rod moves backward to its limit position, the U-shaped contact disengages from the pair of connectors.

[0033] Furthermore, the connector is a U-shaped fold-back structure. In the two parallel segments of the U-shaped fold-back structure, the end of the first parallel segment protrudes from the rear end of the arc-shaped strip body for wiring, and the second parallel segment corresponds to one end of the U-shaped contact. The two parallel segments are spaced apart in the circumferential direction of the arc-shaped strip body.

[0034] Furthermore, the U-shaped contact is a U-shaped pin, and the parallel section of the connector corresponding to one end of the U-shaped pin is a socket structure for inserting one end of the U-shaped pin.

[0035] Furthermore, the tail shell component includes a tail shell ring portion for connecting to the rear end of the main shell, and a rear extension wall extending rearward from the tail shell ring portion. A tail end plate is connected to the rear end of the rear extension wall, a limit switch is located in front of the tail end plate, and a radially penetrating tail cable outlet channel is provided on the rear extension wall for the cable connected to the rear end of the internal main body to radially exit.

[0036] Furthermore, the annular surface of the tail shell ring extends radially and is fitted and connected to the rear end face of the main shell. The tail shell ring has a clearance notch at the position corresponding to the receiving cavity. The rear extension wall includes a clearance wrapping portion that wraps around the clearance notch from the outside, and an inner arc wrapping portion that extends along the inner circumferential surface of the tail shell ring. The clearance wrapping portion includes an outer arc wrapping portion that extends along the outer circumferential surface of the tail shell ring and a radial wrapping portion that connects the outer arc wrapping portion and the inner arc wrapping portion. The tail wire outlet channel is provided on the inner arc wrapping portion.

[0037] Furthermore, a constraint frame for constraining the wire harness is installed on the rear end face of the tail shell ring portion at a radially outer position corresponding to the tail wire outlet channel.

[0038] Furthermore, the tail shell component includes a tail end plate extending perpendicular to the axis of the main shell. The tail end plate is fitted and connected to the rear end face of the main shell. The rear end of the main shell is provided with a radially penetrating tail cable outlet channel for the cable connected to the rear end of the internal main body to radially exit.

[0039] Furthermore, the tail end plate has a radially outwardly extending extension at the position corresponding to the tail end cable outlet channel, and a constraint channel for constraining the cable harness is provided on the front side of the outer end of the extension.

[0040] Furthermore, there are two limit switches.

[0041] The self-detecting connector of this invention improves upon existing connectors. When self-detection of insertion and removal is required, a limit switch assembly is integrated into the connector housing. The driving component of the limit switch assembly is located radially outside the locking sleeve. The driving component has a driven end extending to the front of the housing and radially outside the locking sleeve. When the adapter connector is inserted, the driven end is pushed back, and the trigger end moves back with the driven end, changing the on / off state of the limit switch. When the adapter connector is removed, the return spring pushes the driving component forward to return to its original position and changes the on / off state of the limit switch again. This enables self-detection of insertion and removal of the connector. Moreover, this implementation method is completely different from the existing connector structure for self-detection of insertion and removal, does not change the connector electrical interface, does not increase the size of the electrical interface, and can meet the electrical interface size requirements. Attached Figure Description

[0042] Figure 1 This is a first-view structural schematic diagram of an embodiment of the self-detecting insertion connector of the present invention;

[0043] Figure 2 This is a second-view structural schematic diagram of an embodiment of the self-detecting insertion connector of the present invention;

[0044] Figure 3 This is a third-view structural schematic diagram of an embodiment of the self-detection connector for insertion and removal of the present invention;

[0045] Figure 4 A schematic diagram of the structure of the self-detecting plug-in connector after removing the internal body;

[0046] Figure 5 for Figure 4 A schematic diagram of the structure shown after removing the tail shell component;

[0047] Figure 6 for Figure 5 The diagram shows the structure after the connecting flange is removed.

[0048] Figure 7 for Figure 6 The diagram shown is a schematic of the structure after removing the limit switch assembly.

[0049] Figure 8 for Figure 7 Rear view of the structure;

[0050] Figure 9 for Figure 4 The diagram shows the structure after removing the main housing component.

[0051] Figure 10 for Figure 9 The diagram shows the structure after the connecting flange is removed.

[0052] Figure 11 for Figure 4 Schematic diagram of the structure of the medium-limit switch assembly;

[0053] Figure 12 for Figure 11 A schematic diagram of the limit switch assembly from another perspective;

[0054] Figure 13 This is a cross-sectional view of the drive component;

[0055] Figure 14 for Figure 11 The diagram shows the assembly relationship between the mounting rod and the limit switch in the limit switch assembly shown.

[0056] Figure 15 for Figure 14 A structural schematic diagram from another perspective of the structure shown;

[0057] Figure 16 for Figure 15 Schematic diagram of the internal structure of the switch body;

[0058] Figure 17 This is a schematic diagram of the limit switch assembly in another embodiment;

[0059] Figure 18 for Figure 17A structural schematic diagram from another perspective of the structure shown;

[0060] Figure 19 for Figure 17 The diagram shows a cross-sectional view of the portion of the limit switch that mates with the mounting rod.

[0061] Figure 20 This is a schematic diagram of the limit switch assembly in another embodiment;

[0062] Figure 21 for Figure 20 Schematic diagram of the structure of a medium-limit switch;

[0063] Figure 22 This is a structural schematic diagram of the tail shell component;

[0064] Figure 23 for Figure 22 A structural schematic diagram from another perspective of the structure shown;

[0065] Figure 24 for Figure 23 A schematic diagram of the structure with constraints removed in the middle;

[0066] Figure 25 A first-view structural schematic diagram of Embodiment 2 of the self-testing plug connector;

[0067] Figure 26 This is a second-view structural schematic diagram of an embodiment two of the self-testing plug-in connector;

[0068] Figure 27 for Figure 25 A schematic diagram of the structure after removing the internal main body;

[0069] Figure 28 for Figure 27 A schematic diagram of the structure shown after removing the tail shell component;

[0070] Figure 29 for Figure 28 The diagram shown is a schematic of the structure after removing the limit switch assembly.

[0071] Figure 30 for Figure 27 Schematic diagram of the structure of the medium-limit switch assembly;

[0072] Figure 31 for Figure 30 A schematic diagram of the main body of the switch;

[0073] Figure 32 for Figure 31 Schematic diagram of the middle connector;

[0074] Figure 33 for Figure 30A schematic diagram of the structure of the mounting rod and the trigger end;

[0075] Figure 34 for Figure 27 A schematic diagram of the mid-tail shell component.

[0076] In the diagram: 1. Internal main body; 20. Main housing; 21. Locking sleeve; 22. Connecting flange; 200. Mounting rod through hole; 24. Receiving cavity; 3. Drive component; 30. Driven ring; 31. Mounting rod; 32. Return spring; 301. Connecting ring; 302. Rotating ring; 303. Retaining element; 310. Outer flange; 311. Trigger end; 34. Guide post; 4. Limit switch; 40. Switch body; 41. Wiring component; 43. Shorting component; 44. Clearance; 401. Rear housing Body; 402, Front housing; 403, Front end plate; 410, First parallel section; 411, Second parallel section; 430, Holding spring; 431, Insulating transmission rod; 80, Tail end plate; 81, U-shaped wire clamp; 801, Connecting flange; 802, Outer extension section; 90, Tail housing component; 91, Constraint frame; 901, Tail housing ring part; 902, Outer arc wrapping part; 903, Radial wrapping part; 904, Inner arc wrapping part; 905, Tail end plate; 900, Tail cable outlet channel. Detailed Implementation

[0077] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0078] The self-detecting connector of this invention improves upon existing connectors that have requirements for the size specifications of the internal body, enabling it to achieve a self-detecting function. By setting a limit switch assembly in the radially outer side of its housing (i.e., the internal body), when the adapter connector is inserted, the adapter connector pushes the driven end of the limit switch assembly, causing the trigger end to switch the state of the limit switch, thereby obtaining an insertion signal. When the adapter connector is removed, a reset spring drives the trigger end to reset, and the limit switch switches the state again, thereby obtaining a removal signal. At the same time, the limit switch assembly does not occupy the internal space of the internal body, and there is no need to change the structure of the internal body, thus meeting the size requirements of the internal body.

[0079] Based on the above concept, an embodiment of the self-detecting insertion / removal connector of the present invention is as follows: Figure 1-24 As shown.

[0080] The self-testing connector of this embodiment includes a housing and an inner body 1. The structure of the inner body 1 is the same as that of existing connectors. The housing is different from the prior art. The housing includes a main housing component and a tail shell component 90 connected to the rear side of the main housing component. The main housing component includes an annular main housing 20 surrounding the outer side of the inner body 1. The main housing 20 has a locking sleeve 21 that extends forward for threaded engagement with a connecting nut of the adapter connector to achieve a locking connection, or for locking connection with a locking sleeve of the adapter connector through a snap-fit ​​groove structure, or for locking connection with a locking sleeve of the adapter connector through a snap-fit ​​groove structure. The tail shell component 90 is connected to the rear side of the main housing 20 to cover the inner body 1 inside. The limit switch assembly is installed on the main housing 20 and is located in the internal space enclosed by the main housing 20 and the tail shell component 90. In some embodiments, the limit switch 4 may be located on the rear side of the main housing 20 and the front side of the tail housing component 90, that is, in the space enclosed by the main housing 20 and the tail housing component 90. In other embodiments, a receiving cavity 24 may be provided on the main housing 20, and at least a portion of the limit switch 4 may be located in the receiving cavity 24.

[0081] Specifically, the limit switch assembly includes a limit switch 4 and a drive component 3. The drive component 3 is located radially outside the locking sleeve 21 and has a driven end extending to the front side of the housing and radially outside the locking sleeve 21, and a trigger end 311 located behind the driven end for cooperating with the limit switch 4. The drive component 3 is equipped with a return spring 32 that provides it with an elastic force toward the front. The housing has an anti-disengagement blocking structure that can stop the drive component 3 at the front limit position when the return spring 32 provides an elastic force to push the drive component 3 forward. The driven end of the drive component 3 is used to be pushed back when the adapter connector is inserted. The trigger end 311 moves back with the driven end and changes the on / off state of the limit switch 4, for example, from the circuit on state to the circuit off state, or from the circuit off state to the circuit on state. When the adapter connector is pulled out, the return spring 32 pushes the drive component 3 forward back to the front limit position and changes the on / off state of the limit switch 4 again.

[0082] In one embodiment, the driving component 3 can be a linear rod-shaped structure, similar to the guide rod in a socket and industrial connector disclosed in Chinese Utility Model Patent No. CN214280355U cited in the background art. The driving rod is guided and movably installed in the housing in the front-back direction. The front end of the guide rod extends to the front side of the housing and the side of the plug section, which is the driven end. The rear end of the guide rod extends into the housing. The rear end of the guide rod is provided with a trigger end 311, which corresponds to the contact of the limit switch 4 provided in the housing. The guide rod is provided with an outer protruding ring. A return spring 32 is installed in the housing and fitted on the outside of the guide rod. The front end of the return spring 32 presses against the outer protruding ring, and the rear end presses against the housing.

[0083] The driving component 3 in another embodiment described herein is as follows: Figure 9-12 As shown, the driving component 3 includes a driven ring 30 and a mounting rod 31 connected to the rear side of the driven ring 30. As the name suggests, the driven ring 30 is a ring-shaped structure driven by the adapter connector. The driven ring 30 is arranged around the inner body 1 and its front end constitutes the driven end. That is, when the adapter connector is inserted, the adapter connector can push the front end ring surface of the driven ring 30 and push it backward. The housing is provided with a mounting rod through hole 200 for the mounting rod 31 to pass through from front to back. The entire driving component 3 is mounted on the housing by the mounting rod 31. The housing is provided with a mounting rod blocking structure for blocking the mounting rod 31. The mounting rod blocking structure realizes the anti-disengagement blocking of the driving component 3 in the forward direction. That is, the mounting rod blocking structure constitutes the above-mentioned anti-disengagement blocking structure. Of course, in one embodiment, for the design of the anti-disengagement blocking structure that blocks the driving component 3 on the housing, a radially outward protruding component can also be installed on the outer peripheral surface of the plug-in cylinder 21 of the housing. This component blocks the driven ring 30. These components can be C-shaped retaining rings installed on the outer periphery of the plug-in cylinder 21, or retaining pins inserted into the cylinder wall of the plug-in cylinder 21. However, it should be noted that the radial extension dimension of these components should not affect the push of the adapter connector on the driven ring 30.

[0084] Based on the above-described structure, the driving component 3 can easily achieve its function by using mounting rods 31 to trigger limit switches 4. Thus, the number of limit switches 4 is no greater than the number of mounting rods 31. At least some of the mounting rods 31 have trigger ends 311 at their rear ends. When the adapter connector is inserted, the entire front end of the driven ring 30 is pushed, and the driving component 3 is uniformly stressed in the circumferential direction. The adapter connector will not be subjected to localized reverse forces in the circumferential direction during insertion, making it easier to ensure accurate insertion and removal directions. The backward movement of the driving component 3 will cause all the mounting rods 31 on the rear side to move backward synchronously. The trigger ends 311 at the rear ends of those mounting rods 31 corresponding to the limit switches 4 change the on / off state of the corresponding limit switches 4, thereby obtaining the corresponding signals. Theoretically, one limit switch 4 is sufficient for insertion and removal self-detection. To ensure the accuracy of the detection results, such as... Figure 9-12 In the illustrated embodiment, two limit switches 4 are provided. This allows for mutual verification between the two limit switches 4, improving accuracy. Furthermore, if one limit switch 4 fails, the other ensures the self-detection function during insertion / removal remains operational. Of course, it is understood that in some other embodiments, the number of limit switches 4 may be greater.

[0085] When limit switch 4 is set to two, such as Figure 9-12In the embodiment shown, the two limit switches 4 are arranged opposite each other in the circumferential direction of the driven ring 30. Of course, depending on the structural design of the housing, in some embodiments the two limit switches 4 may also be arranged close to each other in the circumferential direction.

[0086] The main function of the return spring 32 is to keep the drive component 3 at its front limit position in its natural state. After the adapter connector is pulled out, it pushes the drive component 3 back to its front limit position. In some embodiments, the return spring 32 can be disposed between the housing and the driven ring 30, directly providing the driven ring 30 with a forward elastic force. In this article... Figure 9-12 In the illustrated embodiment, the number of return springs 32 is approximately equal to the number of mounting rods 31. One end of each return spring 32 abuts against a mounting rod 31, while the other end abuts directly against the outer casing, or against another component fixedly connected to the outer casing, to maintain relative fixation with the outer casing. This allows the return springs 32 to be located inside the outer casing, providing better protection. Of course, in some embodiments, the number of return springs 32 can be less than the number of mounting rods 31, such as four or three. The return springs are circumferentially distributed and can provide a stable forward elastic force to the driving component. Adjustments to their number and position are conventionally possible for those skilled in the art.

[0087] like Figure 5-13 As shown, this is one embodiment where the housing prevents the drive component 3 from detaching from the front by blocking the mounting rod 31. Specifically, the mounting rod through hole 200 is a stepped hole that is smaller at the front and larger at the rear. The mounting rod 31 has an outer flange 310 at the rear position. The mounting rod blocking structure is the stepped surface of the stepped hole, which is used to stop and cooperate with the outer flange 310. This anti-detachment blocking structure is set on the rear side of the driven ring 30, so that the front end face of the driven ring 30 can be fully exposed on the front side, and can be pushed backward more reliably when the adapter connector is inserted.

[0088] When the adapter connector is locked to the connector of the present invention, the locking nut of the adapter connector gradually pushes against the driven ring 30 as it is screwed onto the locking sleeve 21. At this time, since the locking nut is performing a rotational forward motion, in order to reduce the frictional resistance experienced by the locking nut during rotation and to prevent wear on the driven ring 30, as follows... Figure 9-12As shown, in one embodiment of the present invention, the driven ring 30 includes a connecting ring 301 and a rotating ring 302. The rotating ring 302 is rotatably disposed on the front side of the connecting ring 301 about its own axis. The connecting ring 301 is connected to the mounting rod 31, and the front end face of the rotating ring 302 constitutes the driven end. Thus, during the process of the locking nut pressing against the rotating ring 302 and pushing it backward, the rotating ring 302 itself can rotate, which reduces the friction between the locking nut and the driven ring 30 to a certain extent.

[0089] The method of relative rotational assembly between the rotating ring 302 and the connecting ring 301 is not limited. For example, the connecting ring 301 can be a circular ring with a square cross-section, and the rotating ring 302 can be a thin-walled bent ring structure with a C-shaped cross-section opening backwards. The C-shaped opening avoids the connection between the mounting rod 31 and the connecting ring 301. The rotating ring 302 is wrapped around the connecting ring 301 and can rotate freely relative to the connecting ring 301. Figure 13 In one embodiment shown, the driven ring 30 includes a thrust bearing. Of the two thrust washers of the thrust bearing, the one on the front side constitutes the rotating ring 302, and the one on the rear side constitutes the connecting ring 301. The rotating ring 302 and connecting ring 301 are formed using existing, mature thrust bearings, which are readily available and easy to manufacture. Of course, in the application environment of the connector of this invention, when no matching connector is engaged, the thrust bearing is entirely outside the locking sleeve 21. To prevent the two thrust washers from freely separating, the driven ring 30 in this embodiment also includes a retaining member 303 that maintains a defined front-to-back distance between the two thrust washers. As can be seen from the figure, the retaining member 303 used in this embodiment is a retaining sleeve. The rear end of the retaining sleeve is forcibly connected to the outer circumferential surface of the connecting ring 301, and the front end forms an inwardly turned edge that blocks the rotating ring 302. As can also be seen from the figure, the outer edge of the front end face of the rotary ring 302 is provided with an annular groove, the inner flange is located in the annular groove and the front side is not higher than the front end face of the rotary ring 302, so as to avoid interference with the locking nut of the adapter connector.

[0090] There are several ways to connect the connecting ring 301 and the mounting rod 31. For example, welding can be used, or a threaded hole can be provided on the rear end face of the connecting ring 301, and a threaded section can be provided on the front end of the mounting rod 31. The mounting rod 31 is then threadedly connected to the connecting ring 301. Figure 13In the illustrated embodiment, the connecting ring 301 has a radially penetrating screw hole and a connecting hole extending rearward from the screw hole to the rear end face of the connecting ring 301. The front end of the mounting rod 31 has a small-diameter section that extends from the connecting hole into the screw hole, and a locking nut is connected to the end of the rod extending into the screw hole. The annular end face of the rear end of the small-diameter section of the mounting rod 31 and the rear end face of the connecting ring 301 provide positioning in the front-rear direction, ensuring the positional accuracy of each mounting rod 31 when installed on the connecting ring 301.

[0091] In the embodiment of the connector of the present invention, the limit switch 4 is a direct-acting limit switch 4. The limit switch 4 includes a switch body 40 and a shorting member 43. The switch body 40 is fixed on the main housing 20. The switch body 40 and the mounting rod 31 are spaced apart in the front-rear direction. The shorting member 43 is connected to the trigger end 311 or movably mounted on the switch body 40. The switch body 40 also has a pair of connectors 41. When the shorting member 43 is connected to the trigger end 311, the trigger end 311 moves backward when the driven end is pushed, and the shorting member 43 moves backward synchronously. When the shorting member 43 moves from the front limit position to the rear limit position, it switches from a state of simultaneous contact with the pair of connectors 41 to a state of disengagement from the pair of connectors 41, or from a state of disengagement from the pair of connectors 41 to a state of simultaneous contact with the pair of connectors 41, so as to realize the switching of the on / off state of the pair of connectors 41. When the shorting member 43 is movably installed on the switch body 40, the trigger end 311 at the rear end of the mounting rod 31 can push the shorting member 43 to move during the rearward movement. Thus, when the shorting member 43 moves from the front limit position to the rear limit position, the relative position change between the shorting member 43 and the paired wiring member 41 is realized, thereby realizing the switching of the on and off states of the paired wiring member 41.

[0092] The various connector embodiments described herein provide limit switches 4 with different structural forms.

[0093] like Figure 11-16In the embodiment shown, the switch body 40 of the limit switch 4 is a plate-shaped body. The plate-shaped body is fixedly connected to the rear end face of the main housing 20 by connecting screws. The plate-shaped body is provided with a guide structure at the position corresponding to the front and rear of the mounting rod 31. A guide cooperation relationship is established between the guide structure and the mounting rod 31 to ensure that when the mounting rod 31 moves back and forth, the trigger end 311 can move relative to the paired wiring pieces 41 along an accurate path to achieve disengagement and contact. A pair of connectors 41 are disposed on the side of the guide structure on the plate-shaped main body. The trigger end 311 includes a shorting plate fixed to the rear end face of the outer flange 310 at the rear end of the mounting rod 31. The shorting plate is an L-shaped plate. One side of the L-shaped plate is attached and fixed to the rear end face of the outer flange 310 at the rear end of the mounting rod 31. The other side of the L-shaped plate extends backward. The shorting member 43 is fixed on the shorting plate. The shorting member 43 is a U-shaped pin with the opening facing backward. The two ends of the U-shaped pin are respectively corresponding to the two connectors 41 in the pair. The two connectors 41 have a socket structure. When the mounting rod 31 moves backward to the limit position, the U-shaped pin is inserted into the socket structure of the two connectors 41 to short-circuit the pair of connectors 41. When the mounting rod 31 moves forward to the limit position, the U-shaped pin is disengaged from the pair of connectors 41. The connector 41 is L-shaped in general. The socket structure forms one side of the L-shaped connector 41, and the other side of the L-shaped connector 41 is connected to the rear end of the socket structure and extends radially inward. This makes the wiring radial, which can reduce the axial length.

[0094] In the above embodiments, the paired connectors 41 are arranged on the radial inner side of the guide structure on the plate-shaped body. This makes full use of the internal space of the main housing 20 between the mounting rod 31 and the internal body 1, and at the same time, it makes the paired connectors 41 closer to the internal body 1, so that the wires on the internal body 1 and the wires on the connectors 41 can be bundled and led out. Of course, in other embodiments, the paired connectors 41 can also be arranged on the circumferential side of the guide structure on the plate-shaped body, and the position of the paired connectors 41 can be changed accordingly, which can reduce the radial dimension of the main housing 20.

[0095] In order to avoid interference with the normal relative movement between the shorting connector 43 and the paired connector 41 located on the side of the guide structure, the guide structure provided on the switch body 40 is a guide post 34. A blind hole is opened at the rear end of the mounting rod 31. The guide post 34 guides and cooperates with the blind hole. The reset spring 32 corresponding to the mounting rod 31 is sleeved on the outside of the guide post 34, with one end abutting against the shorting connector mounting plate and the other end abutting against the plate-shaped body.

[0096] The aforementioned limit switch 4 structure arranges the guide structure and the shorting member 43 side by side in a direction perpendicular to the connector's axis, reducing the space occupied in the axial direction and thus reducing the axial length of the connector.

[0097] like Figure 17-19 In the illustrated embodiment, the switch body 40 is a cylindrical body extending front to back and corresponding to the mounting rod 31. The rear end of the mounting rod 31 forms a trigger end 311 and extends into the cylindrical body. The rear end of the return spring 32 corresponding to the mounting rod 31 abuts against the cylindrical body, and the front end abuts against the outer flange 310 provided on the outer peripheral surface of the mounting rod 31 near the rear end. The cylindrical body has a floating inner cavity directly behind the mounting rod 31. The shorting member 43 is movably installed in the floating inner cavity in the front-back direction. During the movement of the trigger end 311 backward, the shorting member 43 moves with the trigger end 311. The paired wiring members 41 are disposed in the cavity wall of the floating inner cavity and have a portion that leaks out of the floating inner cavity. During the front-back movement of the shorting member 43, it can simultaneously contact and simultaneously disengage from the paired wiring members 41.

[0098] In this structural form, the limit switch 4 has a columnar body located on the rear side of the mounting rod 31, and a shorting member 43 located on the rear side of the mounting rod 31. The shorting member 43 is pushed by the rear end of the mounting rod 31, which reduces the space occupied by the limit switch 4 in the radial direction.

[0099] In one embodiment, the pairs of connectors 41 are installed opposite each other in the two side walls of the floating inner cavity and protrude from the two opposite inner walls of the floating inner cavity. When the short connector 43 is at the extreme position on the front side, it contacts the pairs of connectors 41 through its opposite two sides. When the short connector 43 is at the extreme position on the rear side, its opposite two sides are axially offset from the pairs of connectors 41 and disengage.

[0100] In such Figure 19 In the illustrated embodiment, the paired connectors 41 are exposed at the front wall of the floating inner cavity. The floating inner cavity is equipped with a retaining spring 430 that provides an elastic force to the short connector 43 to move forward. When the trigger end 311 moves backward and drives the short connector 43 to move, the short connector 43 disengages from the paired connectors 41. When the short connector 43 is at the extreme position on the front side, the short connector 43 and the paired connectors 41 exposed on the front wall simultaneously come into contact. Of course, another easily achievable variation is that the pair of connectors 41 are exposed at the rear wall of the floating cavity. The floating cavity is equipped with a retaining spring 430 that provides a forward elastic force to the shorting member 43. When the connector 41 is in a position that avoids the retaining spring 430, the trigger end 311 moves backward and drives the shorting member 43 to move until it reaches the rear limit position. At this point, the shorting member 43 contacts the pair of connectors 41. When the shorting member 43 is at the front limit position, the shorting member 43 disengages from the pair of connectors 41 exposed at the rear wall.

[0101] When the paired connectors 41 are exposed at the front wall of the floating inner cavity, the connectors 41 may include rigid connectors 41 extending front and rear. When the shorting member 43 is at the front limit position, the front side of the shorting member 43 is in close contact with the rear end of the rigid connector 41. Alternatively, in another embodiment, the connectors 41 may include elastic connectors 41 extending front and rear, such as a button or a spring pin. The end of the connector 41 exposed from the floating inner cavity is in elastic contact with the shorting member 43, with a certain contact margin, so that the entire limit switch 4 has elastic contact conduction function, significantly improving product life and providing better vibration resistance.

[0102] Based on the two different structural forms described above, in one embodiment, the front end of the connector 41 protrudes from the columnar body, forming a terminal; however, this front-side wiring would lead to wiring difficulties. In another embodiment, as... Figure 19 As shown, the connector 41 has a U-shaped fold-back structure. Of the two parallel sections of the U-shaped fold-back structure, the end of the second parallel section 411 protrudes from the front wall of the floating inner cavity, while the end of the first parallel section 410 passes radially outward from the floating inner cavity and protrudes from the rear end of the columnar body for wiring. The front ends of the two parallel sections are connected by a connecting section. As... Figure 19As shown, for the convenience of the above structural arrangement, the columnar main body includes a front housing 402 and a rear housing 401. The front housing 402 is disc-shaped and has two sets of mounting holes, which are used to install pairs of connectors 41. Each set of mounting holes includes two through holes extending forward and backward, and the two through holes are used to install two parallel segments of the U-shaped folded connector 41. The rear housing 401 is a cylindrical shape with its opening facing forward. After the front housing 402 and the rear housing 401 are joined together, they form a closed inner cavity, which is the floating inner cavity. The short connector 43 is installed in this inner cavity, and the front end of the retaining spring 430 presses against the short connector 43, while the rear end presses against the rear housing 401. Of the two through holes provided on the front housing 402, one corresponds to and communicates with the floating inner cavity, through which the parallel section installed protrudes from the front wall of the floating inner cavity. The other through hole corresponds to the cylindrical wall of the rear housing 401. The cylindrical wall of the rear housing 401 has a through-hole that extends from front to back at the position corresponding to the through hole. The first parallel section 410 of the connector 41 extends rearward from the through hole on the front housing 402 and the through-hole on the rear housing 401 for wiring. A groove is provided on the front end face of the front housing 402 to accommodate the connecting section that connects the two parallel sections. A main body sealing plate is fixedly installed on the front side of the front housing 402 to confine the connector 41 within the front housing 402. The main sealing plate has a central through hole at its center, and the front housing 402 has a guide hole that runs from front to back at its center. The rear end of the mounting rod 31, corresponding to the switch body, extends into the guide hole. An insulating transmission rod 431 is slidably mounted in the guide hole. The insulating transmission rod 431 is fixedly connected to the shorting member 43. The mounting rod 31 is located in front of the insulating transmission rod 431 and drives the shorting member 43 to move by pushing the insulating transmission rod 431. In this way, the transmission between the mounting rod 31 and the shorting member 43 is achieved through the insulating transmission rod 431, which guides and cooperates with the cavity wall of the floating inner cavity in the front-back direction. This structural form can be located at the rear of the switch body 40.

[0103] In one embodiment, the trigger end 311 at the rear end of the mounting rod 31 can contact the shorting member 43, which is also at the front limit position, when it is at the front limit position. As the trigger end 311 moves backward with the mounting rod 31, it pushes the shorting member 43 backward, thereby quickly disengaging the shorting member 43 from the connector 41. In another embodiment, the trigger end 311 at the rear end of the mounting rod 31 can only drive the shorting member 43, which is at the front limit position, to move backward after moving backward a certain distance. This can prevent the limit switch 4 from issuing erroneous signals due to small vibrations or small displacements of the mounting rod 31.

[0104] In one embodiment, the rear end of the mounting rod 31 extending into the cylindrical body can directly push the short connector 43 during the backward movement. However, because the movement of the mounting rod 31 is affected by the pushing of the adapter connector, and because the mounting rod 31 is installed in the mounting rod through hole 200, the accuracy of its linear movement is limited. Figure 19 In the illustrated embodiment, an insulating transmission rod 431 is movably mounted in the front-to-back direction within the cavity wall of the floating inner cavity. The insulating transmission rod 431 is fixedly connected to the short connector 43. The mounting rod 31 is located in front of the insulating transmission rod 431 and has a gap 44 between them. The mounting rod 31 drives the short connector 43 to move by pushing the insulating transmission rod 431. In this way, the transmission between the mounting rod 31 and the short connector 43 is achieved through the insulating transmission rod 431, which guides and cooperates with the cavity wall of the floating inner cavity in the front-to-back direction. This ensures that the short connector 43 can move accurately in the front-to-back direction during the rearward movement of the mounting rod 31, preventing skewing and subsequent movement jamming, and further improving the reliability of the product during use.

[0105] For ease of structural design, such as Figure 19 In the illustrated embodiment, the shorting connector 43 is a stepped shaft structure with a connecting hole on the end face of the large-diameter section. The rear end of the insulating transmission rod 431 extends into the connecting hole and connects to the shorting connector 43. The retaining spring 430 is sleeved outside the small-diameter section with its front end pressing against the stepped surface and its rear end pressing against the rear wall of the floating inner cavity. Pairs of connectors 41 are located on opposite sides of the insulating transmission rod 431, with the end face of the large-diameter section in contact with the pair of connectors 41. This arrangement ensures that other structures are radially symmetrically arranged around the coaxially mounted components such as the mounting rod 31, the insulating transmission shaft, and the shorting connector 43, minimizing the radial space occupied.

[0106] like Figure 20-21 In the illustrated embodiment, the switch body 40 is a block-shaped body. The rear end of the mounting rod 31 extends to the side of the block-shaped body and forms a trigger end 311. A pair of connectors 41 extend from the side of the block-shaped body corresponding to the mounting rod 31. A shorting connector 43 is mounted on the trigger end 311 and has a contact surface facing the pair of connectors 41. When the mounting rod 31 moves backward to its limit position, the contact surface shorts the pair of connectors 41. When the mounting rod 31 moves forward to its limit position, the contact surface disengages from the pair of connectors 41. In the embodiment shown, the block-shaped body is located radially inside the mounting rod 31. The connector 41 includes a contact spring protruding from the outer surface of the block-shaped body and a terminal protruding from the inner surface. The contact spring is used to cooperate with the shorting connector 43. The short connector 43 is a metal part that is fixedly installed at the rear end of the mounting rod 31. The metal part has a contact surface facing the side of the block body. This contact surface is used to cooperate with the contact spring. By changing the position of the mounting rod 31 moving back and forth, the state of contact or separation with the contact spring can be achieved.

[0107] In one embodiment, the rear end of the mounting rod 31 has a circular cross-sectional shape, and the metal component can be a metal block or sheet embedded in the mounting rod 31. In the embodiment shown, the rear end of the mounting rod 31 is a D-shaped cut-off circular rod structure, with the block-shaped main body positioned on the side corresponding to the plane of the cut-off circular rod. Pairs of connectors 41 protrude towards the plane of the cut-off circular rod, and the short connector 43 is a D-shaped metal ring fitted onto the cut-off circular rod, with the plane of the D-shaped metal ring serving as the contact surface. By forming a cut-off circular rod structure at the rear end of the mounting rod 31, the radial dimension occupied by the mounting rod 31 can be reduced, thereby reducing the overall radial dimension of the connector. Of course, in other embodiments, the mounting rod 31 can also be arranged side-by-side with the block-shaped main body in the circumferential direction. These methods all reduce the axial length of the connector.

[0108] The above embodiments are all different variations of the same shell structure. Their common feature is that the main shell component of the shell includes an annular main shell 20, a locking sleeve 21 extending forward from the front end of the main shell 20, a connecting flange 22 fitted on the outer peripheral surface of the main shell 20, the connecting flange 22 including an annular part and a flange plate located outside the annular part, the annular part being fixedly connected to the main shell 20 by screws passing through its sleeve wall, and a tail shell component 90 being fixedly connected to the rear end face of the main shell 20.

[0109] Tail shell component 90 Figure 22-24 As shown, it includes a tail shell ring portion 901 for connection to the rear end of the main housing 20, and a rear extension wall extending rearward from the tail shell ring portion 901. The rear end of the rear extension wall is connected to a tail end plate 905. The limit switch 4 is located in front of the tail end plate 905. The rear extension wall is provided with a radially penetrating tail cable outlet channel 900 for the cable connected to the rear end of the internal main body 1 to radially exit. In the embodiment shown in the figure, the annular surface of the tail shell ring portion 901 extends radially and is fitted and connected to the rear end face of the main shell 20. The tail shell ring portion 901 has a clearance notch at a position corresponding to the receiving cavity 24. The rear end of the limit switch 4 in the receiving cavity 24 can be exposed from the clearance notch and penetrate into the space enclosed by the rear extension wall. The rear extension wall includes a clearance wrapping portion that wraps around the clearance notch from the outside, and an inner arc wrapping portion 904 that extends along the inner circumferential surface of the tail shell ring portion 901. The clearance wrapping portion includes an outer arc wrapping portion 902 that extends along the outer circumferential surface of the tail shell ring portion 901 and a radial wrapping portion 903 that connects the outer arc wrapping portion 902 and the inner arc wrapping portion 904. The tail wire outlet channel 900 is provided on the inner arc wrapping portion 904.

[0110] Based on the tail shell component 90 described above, in a more preferred embodiment, a constraint frame 91 for constraining the wire harness is installed on the rear end face of the tail shell ring portion 901 at a radially outer position corresponding to the tail cable outlet channel 900. The constraint frame 91 can better constrain the tail cable, ensuring its radial outward extension. Specifically, the wire harness frame includes an arc-shaped plate, with L-shaped connecting legs connected to both ends of the arc-shaped plate. One side of the connecting leg extends forward and backward, while the other side fits against the rear side of the tail shell ring portion 901 and is fixedly connected by screws. This type of constraint frame 91 has a simple structure and can be detachably connected to the tail shell ring portion 901. It can be removed during wiring and then fixedly connected again after the tail cable has been threaded through and laid out, facilitating wiring operations.

[0111] In another embodiment, a simpler but slightly larger tail shell component 90 is a cylindrical tail shell with an open front end. The cylindrical tail shell is inserted into the main housing 20 through the front port and is fixedly connected to the main housing 20 by screws or radially arranged screws. The cylindrical wall of the cylindrical tail shell has a radially through opening, which forms the tail cable outlet channel 900.

[0112] Embodiment 2 of the self-detecting plug-in connector of the present invention is as follows: Figure 25-34 As shown.

[0113] The plug-in self-test connector of this embodiment differs significantly from the plug-in self-test connectors in the various embodiments described above in that the housing structure is different. The housing structure of the plug-in self-test connector in this embodiment, combined with the limit switch assembly of different structural forms, further reduces the axial size of the connector.

[0114] The outer casing includes a main housing component and a tail housing component 90 connected to the rear side of the main housing component. The main housing component includes an annular main housing 20 and a locking sleeve 21 integrally formed on the front end of the main housing 20 and extending forward. A connecting flange 22 is integrally formed on the outer circumference of the annular main housing 20. The structure of the drive component 3 can be the same as that of the drive component 3 in the above embodiments.

[0115] Limit switch 4, etc. Figure 28-33As shown, the switch body 40 is an arc-shaped strip extending circumferentially and located radially inside the mounting rod 31. Pairs of connectors 41 are fixedly spaced circumferentially within the switch body 40. The trigger end 311 includes a shorting connector mounting plate fixed to the rear end of the mounting rod 31. A shorting connector 43 is fixed to the shorting connector mounting plate and is a forward-facing U-shaped contact. The two ends of the U-shaped contact correspond to the two connectors 41 in the pair. When the mounting rod 31 moves forward to its limit position, the U-shaped contact short-circuits the pair of connectors 41. When the mounting rod 31 moves backward to its limit position, the U-shaped contact disengages from the pair of connectors 41. In this structure, the switch body 40 and the mounting rod 31 share a portion of the axial space, and the switch body 40 is located in front of the shorting connector 43. Compared to the different embodiments described above, this structure and layout has a smaller axial dimension.

[0116] The rear end face of the main housing 20 is provided with a receiving cavity 24 for accommodating the limit switch 4. In the embodiment shown in the figure, the receiving cavity 24 is radially inner connected to the central annular space of the main housing 20, that is, connected to the central annular space of the main housing 20 for mounting the internal body 1, thus minimizing the radial dimension of the connector. Moreover, as... Figure 28 The limit switch 4 shown is entirely within the receiving cavity 24. The switch body 40 and the shorting bracket mounting plate are all submerged in the receiving cavity 24 and do not protrude from the rear end face of the main housing 20, thus occupying less axial space.

[0117] The switch body 40 is located in front of the shorting member 43, meaning that the paired connectors 41 are also located in front of the shorting member 43. If the lead wires are routed out from the front of the switch body 40, space needs to be reserved on the main housing 20 corresponding to the front of the switch body 40 for the lead wires. While this implementation is feasible, it is inconvenient for the machining of the main housing 20 and the operation of the lead wires. In a preferred embodiment, such as... Figures 31-33 As shown, the connector 41 has a U-shaped folded structure. Of the two parallel segments of the U-shaped folded structure, the end of the first parallel segment 410 protrudes from the rear end of the arc-shaped strip body for wiring. It should be noted that "protruding" here can mean extending from the rear end of the arc-shaped strip body, or it can be recessed within the rear end face of the arc-shaped strip body but still exposed from the rear, with the primary purpose of enabling wiring. The second parallel segment 411 corresponds to one end of the U-shaped contact, and the two parallel segments are spaced apart circumferentially on the arc-shaped strip body. In one embodiment, the U-shaped contact and the paired connectors 41 can achieve conductivity through end-face contact. In another embodiment, to ensure reliable contact and conductivity without increasing the axial dimension, the U-shaped contact is a U-shaped pin, and the parallel segment of the connector 41 corresponding to one end of the U-shaped pin is a socket structure for inserting one end of the U-shaped pin.

[0118] Based on the structure described above, since the limit switch 4 is entirely within the receiving cavity 24 and does not protrude rearward from the rear end face of the main housing 20, in order to reduce the axial dimension of the connector, the tail housing component 90 includes a tail end plate 80 extending perpendicular to the axis of the main housing 20. The tail end plate 80 is fitted and connected to the rear end face of the main housing 20, and the rear end of the main housing 20 is provided with a radially penetrating tail cable outlet channel 900 for the cable connected to the rear end of the internal main body 1 to radially exit. Figure 34 As shown, a connecting flange 801 is provided at the edge of the front side of the tail end plate 80, and the tail end plate 80 is fixedly connected to the main housing 20 at the connecting flange 801 by connecting screws.

[0119] In a preferred embodiment, to better constrain the direction of the tail cable, the tail end plate 80 has a radially outwardly extending extension 802 at a position corresponding to the tail cable exit channel 900, and a constraint channel for constraining the cable harness is provided on the front side of the outer end of the extension 802. Specifically, a U-shaped clamp 81 is detachably connected to the front side of the outer end of the extension 802, and the constraint channel is formed by the U-shaped clamp 81 and the extension 802.

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A plug-in self-test connector, comprising a housing and an internal body (1), characterized in that, The connector also includes a limit switch assembly installed in the housing, the limit switch assembly including a limit switch (4) and a drive member (3), the drive member (3) being located radially outside the locking sleeve (21) and having a driven end extending to the front side of the housing and radially outside the locking sleeve (21), and a trigger end (311) located behind the driven end for cooperating with the limit switch (4), the drive member (3) being provided with a return spring (32) providing it with an elastic force toward the front, the housing having an anti-disengagement stop structure for blocking the drive member (3), the driven end of the drive member (3) being pushed back when the adapter connector is inserted, the trigger end (311) being pushed back with the driven end and changing the on / off state of the limit switch (4), and when the adapter connector is pulled out, the return spring (32) pushing the drive member (3) forward back to the limit position and changing the on / off state of the limit switch (4) again.

2. The self-detecting connector for insertion / removal according to claim 1, characterized in that, The driving component (3) includes a driven ring body (30) and a mounting rod (31) connected to the rear side of the driven ring body (30). The driven ring body (30) is arranged around the inner body (1) and its front end constitutes the driven end. The outer shell is provided with a mounting rod through hole (200) for the mounting rod (31) to pass through from front to back. The outer shell is provided with a mounting rod blocking structure for blocking the mounting rod (31). The mounting rod blocking structure constitutes the anti-detachment blocking structure. At least a portion of the rear end of the mounting rod (31) is provided with the trigger end (311).

3. The self-detecting connector for insertion / removal according to claim 2, characterized in that, The reset spring (32) is a compression spring that acts between the rear end of the mounting rod (31) and the outer casing.

4. The self-detecting connector for insertion / removal according to claim 2, characterized in that, The mounting rod through hole (200) is a stepped hole with a smaller front and a larger rear. The mounting rod (31) has an outer flange (310) at the rear position. The mounting rod stop structure is the stepped surface of the stepped hole and is used to stop and cooperate with the outer flange (310).

5. The self-detecting connector for insertion / removal according to any one of claims 2-4, characterized in that, The driven ring (30) includes a connecting ring (301) and a rotating ring (302). The rotating ring (302) is rotatably disposed on the front side of the connecting ring (301) around its own axis. The connecting ring (301) is connected to the mounting rod (31). The front end face of the rotating ring (302) constitutes the driven end.

6. The self-detecting connector for insertion / removal according to claim 5, characterized in that, The driven ring (30) includes a thrust bearing, the front of the two thrust washers of the thrust bearing constitutes a rotating ring (302), and the rear of the two thrust washers constitutes the connecting ring (301). The driven ring (30) also includes a retainer (303) that maintains a defined front-to-back distance between the two thrust washers.

7. The self-detecting connector for insertion / removal according to claim 6, characterized in that, The connecting ring (301) is provided with a radially penetrating screw hole and a connecting hole extending from the screw hole to the rear end face of the connecting ring (301). The front end of the mounting rod (31) extends into the screw hole from the connecting hole, and a locking nut is connected to the end of the rod extending into the screw hole.

8. The self-detecting connector for insertion / removal according to any one of claims 2-4, characterized in that, The outer shell includes a main shell component and a tail shell component (90) connected to the rear side of the main shell component. The main shell component includes an annular main shell (20) surrounding the outer side of the inner body (1). A locking sleeve (21) is connected to the main shell (20). The tail shell component (90) is connected to the rear side of the main shell (20) to cover the inner body (1). The mounting rod (31) and the limit switch (4) are both mounted on the main shell (20).

9. The self-detecting connector for plugging and unplugging according to claim 8, characterized in that, The limit switch (4) includes a switch body (40) and a shorting member (43). The switch body (40) is fixed on the main housing (20). The shorting member (43) is connected to the trigger end (311) or movably installed on the switch body (40). The switch body (40) has a pair of wiring pieces (41). The shorting member (43) is used to contact or detach from the wiring piece (41) when it is driven by the trigger end (311) to realize the switching of the on and off states of the pair of wiring pieces (41). The switch body (40) and the mounting rod (31) are spaced apart in the front and back direction.

10. The self-detecting connector for insertion / removal according to claim 8, characterized in that, The annular main housing (20) is provided with a cavity (24) for accommodating the limit switch (4), and the limit switch (4) is located in the cavity (24).

11. The self-detecting connector for insertion / removal according to claim 10, characterized in that, The cavity (24) is radially connected to the internal space of the annular main shell (20).

12. The self-detecting connector for mating / unmating according to claim 9, 10, or 11, characterized in that, The switch body (40) is a plate-shaped body. A guide structure is provided on the plate-shaped body at a position corresponding to the front and rear of the mounting rod (31). A pair of connectors (41) are set on the side of the guide structure on the plate-shaped body. The trigger end (311) includes a shorting plate fixed to the rear end of the mounting rod (31). The shorting piece (43) is fixed on the shorting plate. The shorting piece (43) is a U-shaped pin with the opening facing backward. The two ends of the U-shaped pin are respectively corresponding to the front and rear of the two connectors (41). When the mounting rod (31) moves backward to the limit position, the U-shaped pin shorts the pair of connectors (41). When the mounting rod (31) moves forward to the limit position, the U-shaped pin disengages from the pair of connectors (41).

13. The self-detecting connector for insertion / removal according to claim 12, characterized in that, Pairs of connectors (41) are set on the radial inner side of the guide structure on the plate-shaped body, and the two parallel sides of the U-shaped pin are spaced apart in the circumferential direction.

14. The self-detecting connector for insertion / removal according to claim 12, characterized in that, The rear end of the mounting rod (31) is provided with a blind hole, and the guide structure is a guide post (34) that cooperates with the blind hole. The corresponding reset spring (32) is mounted on the guide post (34).

15. The self-detecting connector for mating / unmating according to claim 9, 10, or 11, characterized in that, The switch body (40) is a columnar body. The rear end of the mounting rod (31) extends into the columnar body and forms the trigger end (311). The rear end of the corresponding reset spring (32) abuts against the columnar body. The columnar body has a floating cavity directly behind the mounting rod (31). The shorting member (43) is installed in the floating cavity in the front-back direction. At least during part of the travel of the trigger end (311), the shorting member (43) moves with the trigger end (311). The pair of wiring members (41) are set in the cavity wall of the floating cavity and have a portion that leaks into the floating cavity.

16. The self-detecting connector for insertion / removal according to claim 15, characterized in that it is supplied in pairs. The connector (41) is exposed at the front wall of the floating inner cavity. The floating inner cavity is equipped with a retaining spring (430) that provides elastic force to the short connector (43) to move forward. When the trigger end (311) moves backward and drives the short connector (43) to move, the short connector (43) disengages from the paired connector (41).

17. The self-detecting connector for insertion / removal according to claim 16, characterized in that, After the trigger end (311) moves backward a certain distance, it drives the shorting piece (43) to move and disengage from the paired wiring piece (41).

18. The self-detecting connector for insertion / removal according to claim 17, characterized in that, An insulating transmission rod (431) is installed in the cavity wall of the floating inner cavity in the front-to-back direction. The insulating transmission rod (431) is fixedly connected to the short connector (43). The mounting rod (31) is located in front of the insulating transmission rod (431) and drives the short connector (43) to move by pushing the insulating transmission rod (431).

19. The self-detecting connector for insertion / removal according to claim 18, characterized in that, The short connector (43) is a stepped shaft structure. A connecting hole is provided on the end face of the large diameter section. One end of the insulating transmission rod (431) extends into the connecting hole and is connected to the short connector (43). The retaining spring (430) is sleeved outside the small diameter section and presses against the stepped surface. The paired connectors (41) are located on opposite sides of the insulating transmission rod (431). The end face of the large diameter section is in contact with the paired connectors (41).

20. The self-detecting connector for mating / unmating according to any one of claims 16-18, characterized in that, The connector (41) includes a resilient contact extending forward and backward, with the rear end of the resilient contact protruding from the front wall of the floating inner cavity.

21. The self-detecting connector for mating / unmating according to any one of claims 16-18, characterized in that, The connector (41) is a U-shaped fold structure. In the two parallel sections of the U-shaped fold structure, the end of the first parallel section (410) passes through the radial outside of the floating inner cavity and protrudes from the rear end of the columnar body for wiring, and the end of the second parallel section (411) protrudes from the front cavity wall of the floating inner cavity.

22. The self-detecting connector for mating / unmating according to claim 9, 10, or 11, characterized in that, The limit switch (4) includes a switch body (40) and a shorting member (43). The switch body (40) is fixed on the main housing component. The shorting member (43) is connected to the trigger end (311) or movably installed on the switch body (40). The switch body (40) has a pair of wiring pieces (41). The shorting member (43) is used to contact or detach from the wiring piece (41) when it is driven by the trigger end (311) to realize the switching of the on and off states of the pair of wiring pieces (41). The switch body (40) and the mounting rod (31) are spaced apart in the radial direction or circumferential direction.

23. The self-detecting connector for insertion / removal according to claim 22, characterized in that, The switch body (40) is a block-shaped body. The rear end of the mounting rod (31) extends to the side of the block-shaped body and forms a trigger end (311). A pair of wiring pieces (41) extend from the side of the block-shaped body corresponding to the mounting rod (31). A shorting piece (43) is installed on the trigger end (311) and has a contact surface facing the pair of wiring pieces (41). When the mounting rod (31) moves backward to the limit position, the contact surface shorts the pair of wiring pieces (41). When the mounting rod (31) moves forward to the limit position, the contact surface disengages from the pair of wiring pieces (41).

24. The self-detecting connector for insertion / removal according to claim 23, characterized in that, The switch body (40) is located radially inside the mounting rod (31).

25. The self-detecting connector for mating / unmating according to claim 23 or 24, characterized in that, The rear end of the mounting rod (31) is a circular rod cut in half with a D-shaped cross section. The block-shaped main body is located on the side corresponding to the plane of the cut circular rod. The pair of connectors (41) are exposed facing the plane of the cut circular rod, and the contact surface of the short connector (43) is on the plane of the cut circular rod.

26. The self-detecting connector for insertion / removal according to claim 25, characterized in that, The short connector (43) is a collar structure with a D-shaped cross section, and the short connector (43) is fitted onto the cut semi-circular rod.

27. The self-detecting connector for insertion / removal according to claim 22, characterized in that, The switch body (40) is an arc-shaped strip extending circumferentially and located radially inside the mounting rod (31). Pairs of connectors (41) are fixed at intervals in the circumferential direction inside the switch body (40). The trigger end (311) includes a shorting plate fixed to the rear end of the mounting rod (31). The shorting piece (43) is fixed on the shorting plate. The shorting piece (43) is a U-shaped contact with its opening facing forward. The two ends of the U-shaped contact correspond to the front and rear of the two pairs of connectors (41). When the mounting rod (31) moves forward to the limit position, the U-shaped contact shorts the pair of connectors (41). When the mounting rod (31) moves backward to the limit position, the U-shaped contact disengages from the pair of connectors (41).

28. The self-detecting connector for mating / unmating according to claim 27, characterized in that, The connector (41) is a U-shaped fold structure. In the two parallel sections of the U-shaped fold structure, the end of the first parallel section (410) is exposed from the rear end of the arc-shaped strip body for wiring. The second parallel section (411) corresponds to one end of the U-shaped contact. The two parallel sections are spaced apart in the circumferential direction of the arc-shaped strip body.

29. The self-detecting connector for insertion / removal according to claim 28, characterized in that, The U-shaped contact is a U-shaped pin, and the parallel section of the connector (41) corresponding to one end of the U-shaped pin is a socket structure for inserting one end of the U-shaped pin.

30. The self-detecting connector for mating / unmating according to claim 10 or 11, characterized in that, The tail shell component (90) includes a tail shell ring body portion (901) for connection to the rear end of the main shell (20), and a rear extension wall extending rearward from the tail shell ring body portion (901). The rear end of the rear extension wall is connected to a tail sealing plate (905), and a limit switch (4) is located in front of the tail sealing plate (905). A radially penetrating tail cable outlet channel (900) is provided on the rear extension wall for the cable connected to the rear end of the internal main body (1) to radially pass through.

31. The self-detecting connector for insertion / removal according to claim 30, characterized in that, The annular portion (901) of the tail shell extends radially and is fitted to the rear end face of the main shell (20). The annular portion (901) of the tail shell has a clearance notch at a position corresponding to the receiving cavity (24). The rear extension wall includes a clearance wrapping portion that wraps around the clearance notch from the outside, and an inner arc wrapping portion (904) that extends along the inner circumferential surface of the annular portion (901). The clearance wrapping portion includes an outer arc wrapping portion (902) that extends along the outer circumferential surface of the annular portion (901), and a radial wrapping portion (903) that connects the outer arc wrapping portion (902) and the inner arc wrapping portion (904). The tail wire outlet channel (900) is provided on the inner arc wrapping portion (904).

32. The self-detecting connector for insertion / removal according to claim 31, characterized in that, A constraint frame (91) for constraining the wire harness is installed on the rear end face of the tail shell ring part (901) at a radially outer position corresponding to the tail wire outlet channel (900).

33. The self-detecting connector for insertion / removal according to claim 10 or 11, characterized in that, The tail shell component includes a tail end plate (80) extending perpendicular to the axis of the main shell (20). The tail end plate (80) is fitted and connected to the rear end face of the main shell (20). The rear end of the main shell (20) is provided with a radially penetrating tail end cable outlet channel for the cable connected to the rear end of the internal body (1) to radially pass through.

34. The self-detecting connector for insertion / removal according to claim 33, characterized in that, The tail end plate (80) has a radially outwardly extending extension (802) at the position corresponding to the tail end cable outlet channel, and a constraint channel for constraining the cable harness is provided on the front side of the outer end of the extension (802).

35. The self-detecting connector for insertion / removal according to any one of claims 1-4, characterized in that, There are two limit switches (4).

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