Header assembly and socket

Abstract

The present invention relates to the field of conductive connectors, and in particular to a header assembly and a socket thereof. The header assembly includes a plug and a socket, a locking pin and a hook groove for locking the two are arranged between the plug and the socket, the elastic supporting structure includes a guide hole arranged on one of the socket and the plug and extending along the plugging direction, a push pin for pushing against the other of the plug and the socket is installed in the guide hole, an elastic member providing an elastic force outward to the push pin is also installed in the guide hole, and the elastic supporting structure also includes an anti-slip structure to prevent the push pin from slipping out of the guide hole. The plug and the socket are reliably locked by the push pin in the guide hole and the elastic member providing an elastic force to the push pin.

Description

Technical Field

[0001] The invention relates to the field of conductive connectors, and in particular to a header assembly and a socket thereof. Background Art

[0002] With the increase in the number of connector terminals and the popularization of multi-connectors, the insertion force required for connector combination is also increasing. For header assemblies that achieve conductive connection through the contact and deformation of the conductive contacts of the plug and socket, the insertion resistance of the plug and socket during mutual insertion is also increasing.

[0003] Therefore, the industry has developed low insertion force or zero insertion force type electronic connectors. For example, a headstock assembly and its socket are disclosed in the Chinese invention patent with application publication number CN108429033A. A shaft assembly is installed in the socket housing, and the shaft assembly includes two camshafts arranged side by side. The camshafts are respectively located between two adjacent groups of contacts on the socket. The outer contour surface at the maximum diameter of the camshaft is used to push the two groups of socket contacts away from each other. A transmission rod extends outward from one camshaft. By rotating the transmission rod, the camshaft pushes the socket contacts away and makes conductive contact with the plug contacts, thereby achieving the purpose of reducing or eliminating the insertion force.

[0004] In addition, sector gears that mesh with each other are provided at both ends of the camshafts, and "6"-shaped lock hooks are respectively installed on the side of the two camshafts away from the shaft end. The structural part of the lock hook forms a hook groove, and the hook groove openings of the two lock hooks are opposite to each other; lock pins that cantilever along the length direction of the plug are respectively provided at both ends in the length direction of the plugging end of the plug, so that when the transmission rod is rotated, the lock hook can hook the lock pin on the plug and pull the lock pin to move further toward the socket. When the lock pin slides to the bottom of the hook groove, the elastic member arranged on the side of the plug-in position of the plug and the socket provides the maximum elastic force to tighten the plug and the socket, which can reliably ensure the locking of the plug and the socket.

[0005] The specification discloses two methods of supporting with elastic parts. The first method is to use a wing-shaped spring piece with two arm sections for supporting. However, the deformation range of this spring piece is limited, and the root of the arm section is prone to fatigue and elastic failure. Therefore, the service life is limited.

[0006] The second method disclosed in the specification is a technical solution using a cylindrical spring. When the elastic member is a cylindrical spring, a mounting blind hole for accommodating the cylindrical spring is provided on the socket housing. One end of the cylindrical spring is bonded or connected to the blind hole by screws, and the end outside the blind hole is against the plug.

[0007] However, in order to ensure reliable locking force between the head seats, the cylindrical spring needs to provide a certain strength of elastic force, that is, the compression amount is large when the plug and socket are fully inserted, so it is necessary to have a longer length extending out of the installation blind hole. Since the structure of this connector is relatively compact, the radial size of the cylindrical spring installed on it is generally small, so the spring section with a thinner diameter and longer length extending out of the installation blind hole is easy to twist in the radial direction when compressed, so that good elastic support cannot be achieved, and locking between the head seats cannot be achieved. Therefore, this solution is not practical. Summary of the invention

[0008] An object of the present invention is to provide a socket which can solve the problem of unreliable locking when the socket and the plug are matched in the prior art. Another object of the present invention is to provide a header assembly having the socket which has the advantage of reliable locking.

[0009] To achieve the above purpose, the technical solution of the headstock assembly provided by the present invention is as follows:

[0010] A header assembly comprises a plug and a socket, the socket comprises a socket shell, a shaft assembly is installed in the socket shell, a hook groove is installed or opened on the shaft of the shaft assembly, a locking pin is fixed on the plug, the rotation of the shaft can drive the hook groove to hook and pull the locking pin toward the socket, an elastic supporting structure is provided between the opposite surfaces of the plug and the socket, which provides a force in opposite directions to the plug and the socket to tighten the locking pin and the hook groove when the locking pin and the hook groove are locked, the elastic supporting structure comprises a guide hole extending along the plugging direction provided on one of the socket and the plug, a pushing pin for pushing against the other one of the plug and the socket and an elastic member for providing an elastic force outward to the pushing pin in the direction of elastic deformation are installed in the guide hole, and the elastic supporting structure also comprises an anti-slip structure to prevent the pushing pin from slipping out of the guide hole.

[0011] The beneficial effects are as follows: the elastic member provides an outward elastic force for the ejector pin in the guide hole, so that when the hook groove hooks and pulls the locking pin, the ejector pin can move in the direction opposite to the plug-in direction through the elastic force provided by the elastic member, thereby achieving the purpose of tightening the plug and the socket, and guiding the deformation of the spring, thereby ensuring that the elastic member will not deflect in the compression direction; the elastic member is arranged in the guide hole, and the elastic deformation direction of the elastic member extends along the plug-in direction, the guide hole can limit the deformation direction of the elastic member to a certain extent, and the ejector pin installed in the guide hole can only move in the guide direction of the guide hole, providing a stable reverse ejector force for the plug and the socket, thereby improving the locking reliability of the header assembly.

[0012] Furthermore, the elastic member is a cylindrical spring.

[0013] The beneficial effects are: the cylindrical spring is easy to install into the guide hole, and the cylindrical spring can provide sufficient elastic force for the ejector pin; in addition, the cylindrical spring has a simple structure, mature technology, is widely used, and is relatively cheap, saving the cost of the head seat assembly.

[0014] Furthermore, the ejector pin is inserted into the cylindrical spring, and a stopper for engaging with the cylindrical spring is provided on the circumferential surface of the ejector pin.

[0015] The beneficial effects are as follows: inserting the ejector pin into the cylindrical spring can guide the expansion and contraction deformation of the cylindrical spring, and will not cause twisting in the guide hole, thereby improving the reliability of locking; the stopper arranged on the circumferential surface of the ejector pin is convenient for cooperating with the cylindrical spring to stop, and the cylindrical spring is compressed by the stopper to provide an elastic force for the ejector pin, and the stopper can also directly drive the spring to move, thereby simplifying the structure of the head seat assembly.

[0016] Furthermore, the socket housing includes a mounting shell that is open on one side in the plugging direction, the shaft assembly is installed in the mounting shell, and the socket housing also includes a cover that is buckled at the opening of the mounting shell to fix the shaft assembly inside, the guide hole is arranged on the mounting shell, and the cover is provided with an opening for the end of the ejector pin to extend out, when the ejector pin is not pushed by the plug, the stopper is used to cooperate with the edge of the hole of the opening, and the anti-slip structure is formed by the edge of the hole of the opening.

[0017] The beneficial effect is that the top end of the ejector pin is extended through the opening on the cover to abut against the plug, and the hole edge of the opening cooperates with the stopper to ensure that the ejector pin is always in the guide hole and can move along the axial direction of the guide hole. When the ejector pin is pushed by the plug, it can stably support the plug and the socket.

[0018] Furthermore, an annular boss is provided on the circumferential surface of the ejector pin, and the anti-slip structure is an anti-slip baffle fixed at the hole mouth of the guide hole, and an avoidance hole is provided on the anti-slip baffle for the ejector pin to extend out, and the inner hole edge of the avoidance hole cooperates with the annular boss to prevent slippage.

[0019] The beneficial effect is: through the cooperation between the annular boss and the inner hole of the avoidance hole, the ejector pin is always located in the guide hole and can move along the axial direction of the guide hole. The ejector pin extends out of the guide hole through the avoidance hole. When the ejector pin is pushed by the plug, it can stably support the plug and the socket. At this time, there is no need to set an additional anti-slip structure in the socket housing. The guiding and anti-slip functions can be achieved by the guide hole alone, saving the internal space of the socket housing.

[0020] Furthermore, the ejector pin is a conductive member for achieving electrical conduction between the plug and the socket when the plug and the socket are plugged in and mated.

[0021] The beneficial effect is that the top pin is a conductive rod, which, when in use, realizes electrical conduction between the plug and the socket, thereby achieving a shielding effect. This function is achieved by the top pin, which reduces the arrangement of other components on the header assembly for achieving shielding of the header assembly, thereby simplifying the assembly of the socket.

[0022] The technical solution of the socket provided by the present invention is:

[0023] A socket comprises a socket housing, in which a shaft assembly is installed, a hook groove is installed or opened on the shaft of the shaft assembly, the hook groove is used to hook and pull a locking pin arranged on an adapted plug toward the socket when the shaft rotates, the socket is provided with an elastic supporting structure for providing a supporting force to the plug to tighten the locking pin and the hook groove when the locking pin and the hook groove are locked, the elastic supporting structure comprises a guide hole arranged on the socket and extending along the plugging direction, a pushing pin for pushing the plug and an elastic member for providing an elastic force outward to the pushing pin in the direction of elastic deformation are installed in the guide hole, and the elastic supporting structure also comprises an anti-slip structure for preventing the pushing pin from slipping out of the guide hole.

[0024] The beneficial effects are as follows: the elastic member provides an outward elastic force for the ejector pin in the guide hole, so that when the hook groove hooks and pulls the locking pin, the ejector pin can move in the direction opposite to the plug-in direction through the elastic force provided by the elastic member, thereby achieving the purpose of tightening the plug and the socket, and guiding the deformation of the spring, thereby ensuring that the elastic member will not deflect in the compression direction; the elastic member is arranged in the guide hole, and the elastic deformation direction of the elastic member extends along the plug-in direction, the guide hole can limit the deformation direction of the elastic member to a certain extent, and the ejector pin installed in the guide hole can only move in the guiding direction of the guide hole, and when the socket is plugged in with the matching plug, a stable reverse force is provided to support the plug and the socket.

[0025] Furthermore, the elastic member is a cylindrical spring.

[0026] The beneficial effects are: the cylindrical spring is easy to install into the guide hole, and the cylindrical spring can provide sufficient elastic force for the ejector pin; in addition, the cylindrical spring has a simple structure, mature technology, and a relatively cheap price, which saves the cost of the socket.

[0027] Furthermore, the ejector pin is inserted into a narrow cylindrical spring, and a stopper for engaging with the cylindrical spring is provided on the circumferential surface of the ejector pin.

[0028] The beneficial effects are as follows: inserting the ejector pin into the cylindrical spring can guide the expansion and contraction deformation of the cylindrical spring, and will not cause twisting in the guide hole, thereby improving the reliability of locking; the stopper arranged on the circumferential surface of the ejector pin is convenient for cooperating with the cylindrical spring to stop, and the cylindrical spring is compressed by the stopper to provide an elastic force for the ejector pin, and the stopper can also directly drive the spring to move, thereby simplifying the structure of the socket.

[0029] Furthermore, the socket housing includes a mounting shell that is open on one side in the plugging direction, the shaft assembly is installed in the mounting shell, and the socket housing also includes a cover that is buckled at the opening of the mounting shell to fix the shaft assembly inside, the guide hole is arranged on the mounting shell, and the cover is provided with an opening for the end of the ejector pin to extend out, when the ejector pin is not pushed by the plug, the stopper is used to cooperate with the edge of the hole of the opening, and the anti-slip structure is formed by the edge of the hole of the opening.

[0030] The beneficial effect is as follows: the top end of the ejector pin is extended through the opening on the cover to abut against the plug, and the hole edge of the opening cooperates with the stopper to ensure that the ejector pin is always in the guide hole and can move along the axial direction of the guide hole. When the ejector pin is pushed by the matching plug, it can provide stable support for the socket and the matching plug.

[0031] Furthermore, an annular boss is provided on the circumferential surface of the ejector pin, and the anti-slip structure is an anti-slip baffle fixed at the hole mouth of the guide hole, and an avoidance hole is provided on the anti-slip baffle for the ejector pin to extend out, and the inner hole edge of the avoidance hole cooperates with the annular boss to prevent slippage.

[0032] The beneficial effect is: through the cooperation between the annular boss and the inner hole of the avoidance hole, the ejector pin is always located in the guide hole and can move along the axial direction of the guide hole. The ejector pin extends out of the guide hole through the avoidance hole. When the ejector pin is pushed by the adapted plug, it can stably support the socket and the adapted plug. At this time, there is no need to set an additional anti-slip structure in the socket housing. The guiding and anti-slip functions can be achieved by the guide hole alone, saving the internal space of the socket housing.

[0033] Furthermore, the ejector pin is a conductive member for achieving electrical conduction between the plug and the socket when the plug and the socket are plugged in and mated.

[0034] The beneficial effect is that the top pin is a conductive rod, which, when in use, realizes electrical conduction between the plug and the socket, thereby achieving a shielding effect. This function is achieved by the top pin, which reduces the arrangement of other components on the header assembly for achieving shielding of the header assembly, thereby simplifying the assembly of the socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the socket in the embodiment of the header assembly of the present invention;

[0036] Figure 2 It is a front cross-sectional view of the plug and the socket in the embodiment of the header assembly of the present invention before being plugged and locked;

[0037] Figure 3 A side cross-sectional view of the plug and the socket of the embodiment of the header assembly of the present invention before being plugged and locked;

[0038] Figure 4 A side cross-sectional view of a plug and a socket in an embodiment of a header assembly of the present invention when they are plugged in and locked;

[0039] Figure 5 It is a front cross-sectional view of the embodiment of the header assembly of the present invention when the plug and the socket are plugged and locked;

[0040] Figure 6 An external view of a socket assembly of an embodiment of the present invention after it is assembled;

[0041] Figure 7 A side view of the embodiment of the header assembly of the present invention, in which the locking hook is hooked with the locking pin after the plug and the socket are plugged and locked together;

[0042] In the figure, 1-cover; 2-lift pin; 3-cylindrical spring; 4-mounting shell; 5-socket contact; 6-camshaft; 7-plug; 8-guide hole; 9-guide through hole; 10-locking pin; 11-sector gear; 12-locking hook; 121-hook-shaped part; 122-hook groove. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0044] The embodiment of the headstock assembly of the present invention is as follows Figure 1-Figure 7 As shown, the header assembly includes a plug 7 and a socket. Both the plug 7 and the socket are rectangular connectors. The plug 7 is provided with plug contacts in groups, and the socket contacts 5 are provided in groups. The plug contacts correspond to the socket contacts 5. The contacts constituting the same plug contact group and the same socket contact group are arranged in the length direction of the connector, and multiple contact groups are arranged side by side in the width direction of the connector. The end of the plug 7 used for conductive connection with the socket contact 5 is called the plug end. The two ends of the plug end in the length direction are respectively provided with side panels extending in the plug direction. The side panels are provided with locking pins 10 cantilevered in the length direction of the plug 7. Each side panel has two locking pins 10, which are arranged at intervals in the width direction of the plug.

[0045] The socket comprises a socket housing, which comprises a mounting shell 4 which is open on one side of the plugging direction, and socket contacts 5 are mounted in groups in a rectangular mounting shell 4, such as Figure 1 and Figure 2As shown, one end of the mounting shell 4 used for conductive connection with the plug contact is the connection end, and the connection end is open in the plugging direction. Guide holes 8 extending in the plugging direction are respectively provided at both ends in the length direction of the connection end, and two are provided at each end, and are spaced apart in the width direction of the socket, and the guide holes 8 are close to the plugging position of the plug contact and the socket contact 5. A cylindrical spring 3 is vertically placed in the guide hole 8, and the guide hole 8 has a radial dimension that allows the cylindrical spring 3 to undergo axial compression deformation; in addition, an annular step is also provided at the bottom position of the guide hole 8, and the annular step supports the cylindrical spring 3, and a positioning hole is also coaxially provided on the annular step.

[0046] A rod-shaped conductive ejector pin 2 is inserted into the guide hole 8. Figure 3 and Figure 4 As shown, the ejector pin 2 is coaxially inserted into the cylindrical spring 3 in the guide hole 8, and the bottom end of the ejector pin 2 extends into the positioning hole, and the upper end of the ejector pin 2 extends out of the guide hole 8. An annular stop is provided on the outer peripheral surface near the top end of the ejector pin 2. The stop has a radial dimension that matches the cylindrical spring 3. The lower end surface of the annular stop presses against the cylindrical spring 3, that is, the cylindrical spring 3 is elastically pressed between the annular step and the stop.

[0047] The socket housing also includes a cover 1 which is buckled on the opening of the mounting shell 4. Figure 5 As shown, the cover 1 is fixed to the mounting hole 4 by screws, and a guide through hole 9 is provided on the cover 1 at a position corresponding to the guide hole 8, the ejector pin 2 protrudes out of the guide through hole 9, and the radial dimension of the guide through hole 9 is smaller than the radial dimension of the guide through hole 9, and the edge of the guide through hole 9 is larger than the radial dimension of the guide hole 8, so that a stop step is formed at the junction of the cover 1 and the guide hole 8, and the annular upper end surface of the stopper forms a top pressure surface that abuts against the edge of the guide through hole 9, and the edge of the guide through hole 9 cooperates with the stopper of the stopper to prevent the ejector pin 2 from falling out of the guide hole 8, and the edge of the guide through hole 9 forms an anti-falling structure.

[0048] A rotating shaft assembly is also installed between the cover 1 and the mounting shell 4. Figure 6 and Figure 7 As shown, the shaft assembly includes two shafts arranged in parallel, the shaft is a camshaft 6, and the two ends of the two shafts are respectively provided with mutually meshing sector gears 11, and "6"-shaped lock hooks 12 are respectively installed on the side of the two shafts away from the shaft end, that is, each end of each shaft is respectively installed with a lock hook 12, and the hook-shaped part 121 of the lock hook 12 forms a hook groove 122, and the hook groove 122 is used to hook the lock pin 10. It should be noted that the matching relationship and transmission principle of the shaft and the hooking process with the lock pin 10 are basically consistent with the prior art applied in the background technology, and the installation of the plug contact and the socket contact 5 is the same as that in the patent document CN108429033A cited in the background technology, which will not be described here.

[0049] After the plug 7 and the socket are assembled, the top end of the push pin 2 pushes against the bottom surface of the side plate of the plug 7. At this time, the lock pin 10 is located within the coverage of the hook groove 122 when the lock hook 12 rotates. In this way, the rotating shaft can hook the lock pin 10 on the plug 7 through the lock hook 12 while the cam shaft 6 pushes the corresponding socket contact 5 to contact the plug contact, and pulls the lock pin 10 further toward the socket during the rotation process, thereby pulling the plug 7 further toward the socket. When the rotating shaft rotates until the lock pin 10 slides along the hook groove 122 to the bottom position of the hook groove 122, as shown in FIG. Figure 4 and 7 As shown, the plug 7 and the socket are in the locked position, and at this time, the compression of the cylindrical spring 3 located in the guide hole reaches the maximum, and the force provided to the push pin 2 to support in the opposite direction of the plug-in connection also reaches the maximum, and then the elastic force provided to the plug 7 and the socket to tighten reaches the maximum, which can ensure the reliable locking of the plug 7 and the socket, and the push pin 2 abuts against the plug 7, which not only prevents the cylindrical spring 3 from being deflected, but also because the push pin 2 is a conductive rod, it can connect the shells of the plug and the socket when the plug 7 is matched with the socket to achieve shielding.

[0050] In this embodiment, the elastic member is a cylindrical spring. In other embodiments, a disc spring may also be used.

[0051] In this embodiment, the ejector pin is stopped by the edge of the guide through hole on the cover. In other embodiments, a retaining pin cantilevered to both sides of the ejector pin can be provided on the outer circumferential surface of the ejector pin, and a slot matched with the retaining pin is provided on the inner wall of the guide hole, and the slot is a groove extending along the plug-in direction. The retaining pin can move freely in the slot along the plug-in direction. At this time, the edge of the slot stops the retaining pin to form an anti-slip structure, and a retaining cover is no longer needed.

[0052] In this embodiment, the entire upper end surface of the stop platform is formed into a top pressure surface that cooperates with the stop step. In other embodiments, radial block-shaped or strip-shaped protrusions can be arranged at intervals on the outer circumference of the ejector pin, and the protrusions cooperate to form the top pressure surface.

[0053] In this embodiment, the lock hooks are installed at both ends of the rotating shaft, and the hook-shaped parts of the lock hooks form hook grooves. In other embodiments, the lock hooks can be directly formed on the rotating shaft, and the lock hooks have hook grooves for hooking the lock pins.

[0054] In this embodiment, the stopper is pressed against the edge of the guide through hole to prevent the stopper from falling out. In other embodiments, an inverted edge may be provided at the opening of the guide hole to prevent the ejector pin from falling out.

[0055] In the present embodiment, the baffle not only cooperates with the hole edge of the guide through hole but also presses against the cylindrical spring. In other embodiments, in addition to the baffle that presses against the cylindrical spring, an annular boss can also be provided on the circumferential surface of the ejector pin. The anti-slip structure is an anti-slip baffle fixed at the hole mouth position of the guide hole. The anti-slip baffle is provided with an avoidance hole for the ejector pin to extend out. The inner hole edge of the avoidance hole cooperates with the annular boss to prevent slipping. Of course, the annular boss can also cooperate with the hole edge of the avoidance hole to prevent slipping while pressing against the cylindrical spring.

[0056] In this embodiment, the top pin has a conductive property. In other embodiments, the top pin may be an insulating rod that does not perform a conductive function and thus does not perform a shielding function.

[0057] In this embodiment, the ejector pin is inserted into the cylindrical spring. In other embodiments, the ejector pin can be directly pressed against the spring. At this time, the ejector pin cooperates with the guide hole, the ejector pin will not swing, and a guiding effect can be achieved on the spring deformation process.

[0058] The present invention takes into account the universality and interchangeability of plugs and sockets and comparatively installs the elastic supporting structure on the socket, but does not exclude the implementation method in which the elastic supporting structure is located on the plug.

[0059] The present invention further provides an embodiment of a socket, and the specific structure of the socket is the same as the structure of the socket in the above-mentioned header assembly embodiment, so it will not be described repeatedly.

Claims

1. A head base assembly, comprising a plug and a socket, the socket comprising a socket housing, a shaft assembly installed in the socket housing, a hook groove installed or opened on the shaft of the shaft assembly, a locking pin fixed on the plug, the rotation of the shaft can drive the hook groove to hook and pull the locking pin toward the socket, and an elastic supporting structure is provided between the opposite surfaces of the plug and the socket, which provides a force in opposite directions to the plug and the socket when the locking pin and the hook groove are locked, so that the locking pin and the hook groove are tightened, characterized in that: The elastic supporting structure includes a guide hole provided on one of the socket and the plug and extending along the plugging direction, a push pin for pushing against the other of the plug and the socket is installed in the guide hole, an elastic member is also installed in the guide hole to provide an elastic force outward to the push pin in the direction of elastic deformation, the elastic supporting structure also includes an anti-slip structure to prevent the push pin from slipping out of the guide hole, the elastic member is sleeved on the push pin, an annular boss is provided on the circumferential surface of the push pin, the anti-slip structure is an anti-slip baffle fixed at the hole mouth position of the guide hole, an avoidance hole is provided on the anti-slip baffle for the push pin to extend out, and the inner hole edge of the avoidance hole cooperates with the annular boss to prevent slipping out.

2. The headstock assembly according to claim 1, characterized in that: The elastic member is a cylindrical spring.

3. The headstock assembly according to claim 2, characterized in that: The ejector pin is inserted into the cylindrical spring, and a stopper for stopping and cooperating with the cylindrical spring is arranged on the circumferential surface of the ejector pin.

4. The headstock assembly according to claim 3, characterized in that: The socket housing includes a mounting shell that is open on one side in the plugging direction, and the shaft assembly is installed in the mounting shell. The socket housing also includes a cover that is buckled at the opening of the mounting shell to fix the shaft assembly inside. The guide hole is set on the mounting shell, and the cover is provided with an opening for the end of the ejector pin to extend out. When the ejector pin is not pushed by the plug, the stopper is used to cooperate with the edge of the hole of the opening, and the anti-slip structure is formed by the edge of the hole of the opening.

5. The headstock assembly according to any one of claims 1 to 4, characterized in that: The ejector pin is a conductive member used to achieve electrical conduction between the plug and the socket when the plug and the socket are plugged in and matched.

6. A socket, comprising a socket housing, a shaft assembly installed in the socket housing, a hook groove installed or opened on the shaft of the shaft assembly, the hook groove is used to hook and pull a lock pin provided on an adapted plug toward the socket when the shaft rotates, and the socket is provided with an elastic supporting structure for providing a supporting force to the plug to tighten the lock pin and the hook groove when the lock pin and the hook groove are locked, characterized in that: The elastic supporting structure includes a guide hole provided on the socket and extending along the plugging direction, a push pin for pushing the plug is installed in the guide hole, and an elastic member is also installed in the guide hole to provide an elastic force outward to the push pin in the direction of elastic deformation. The elastic supporting structure also includes an anti-slip structure to prevent the push pin from slipping out of the guide hole, the elastic member is sleeved on the push pin, an annular boss is provided on the circumferential surface of the push pin, the anti-slip structure is an anti-slip baffle fixed at the hole mouth position of the guide hole, an avoidance hole is provided on the anti-slip baffle for the push pin to extend out, and the inner hole edge of the avoidance hole cooperates with the annular boss to prevent slipping out.

7. The socket according to claim 6, characterized in that: The elastic member is a cylindrical spring.

8. The socket according to claim 7, characterized in that: The ejector pin is inserted into the cylindrical spring, and a stopper for stopping and cooperating with the cylindrical spring is arranged on the circumferential surface of the ejector pin.

9. The socket according to claim 8, characterized in that: The socket housing includes a mounting shell that is open on one side in the plugging direction, and the shaft assembly is installed in the mounting shell. The socket housing also includes a cover that is buckled at the opening of the mounting shell to fix the shaft assembly inside. The guide hole is set on the mounting shell, and the cover is provided with an opening for the end of the ejector pin to extend out. When the ejector pin is not pushed by the plug, the stopper is used to cooperate with the edge of the hole of the opening, and the anti-slip structure is formed by the edge of the hole of the opening.

10. The socket according to any one of claims 6 to 9, characterized in that: The ejector pin is a conductive member used to achieve electrical conduction between the plug and the socket when the plug and the socket are plugged in and matched.

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