Electric connector with hierarchical unlocking function

Abstract

The invention relates to an electric connector with a graded unlocking function. The electric connector comprises a socket and a plug which is used by being plugged into the socket. The socket comprises a first shell, a guide column, a signal pin and a plurality of power supply pins, the guide column is mounted on the outer side of the first shell, and the signal pin and the power supply pins are both mounted in the first shell; the plug comprises a second shell, a signal terminal and a plurality of power supply terminals, and the inner side of the second shell is provided with a sliding groove for accommodating the guide column; the sliding groove is provided with a first limiting point and a second limiting point in the extending direction. The signal terminal and the power supply terminal are arranged on the second shell; when the guide pillar is located at the first limiting point, the plug and the socket are in a locking state; when the guide post is located at the second limiting point, the signal pin is separated from the signal terminal to cut off the power supply, and the plug and the socket are in a primary unlocking state; and when the guide post is separated from the chute, the power pin is separated from the power terminal, and the plug and the socket are in a secondary unlocking state. According to the electric connector, the plug is pulled out after power is cut off, so that electric arc caused by instant disconnection of the power supply terminal is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical connectors, in particular to an electrical connector with a hierarchical unlocking function. BACKGROUND

[0002] An electrical connector is a common electrical connector composed of a plug and a socket, mainly used for signal transmission and power transmission. At present, the lengths of all pins of the socket are consistent. When the plug is pulled out of the socket, electric sparks are easily generated. Since all pins are disconnected at the same time, electric arc is easily generated at the moment when the power pin is disconnected, which can damage the electroplated layer of the pin and aggravate oxidation, thereby affecting the conductivity and service life. SUMMARY

[0003] Therefore, it is necessary to provide an electrical connector with a hierarchical unlocking function in view of the above problems.

[0004] An electrical connector with a hierarchical unlocking function, comprising a socket and a plug used for plugging with the socket; the socket comprises a first housing, a guide column, a signal pin and a plurality of power pins, the guide column is installed on the outside of the first housing, and the signal pin and the power pins are both installed in the first housing; the plug comprises a second housing, a signal terminal and a plurality of power terminals, the inner side of the second housing is provided with a sliding groove to accommodate the guide column; the sliding groove is provided with a first limiting point and a second limiting point along the extension direction; the signal terminal and the power terminals are both installed in the second housing, the signal pin is used for electrically connecting the signal terminal, and the power pin is used for electrically connecting the power terminal; when the guide column is located at the first limiting point, the plug and the socket are in a locked state; when the guide column is located at the second limiting point, the signal pin is separated from the signal terminal to make the power off, and the plug and the socket are in a first unlocking state; when the guide column is separated from the sliding groove, the power pin is separated from the power terminal, and the plug and the socket are in a second unlocking state.

[0005] In one of the embodiments, the sliding groove extends along the circumference of the second housing, and the sliding groove extends from the middle of the second housing to the end of the second housing close to the first housing; the sliding groove comprises a first connecting segment, a second connecting segment and a third connecting segment which are sequentially communicated, the third connecting segment corresponds to the end of the second housing close to the first housing; the first limiting point is arranged at the first connecting segment; and the second limiting point is arranged at the connection between the first connecting segment and the second connecting segment.

[0006] In one of the embodiments, the first connecting segment is in an arc shape, the second connecting segment is an elongated transition segment, and the third connecting segment is in an arc shape; the first limiting point is a groove, and the second limiting point is a circular arc convex point.

[0007] In one of the embodiments, the socket further comprises a chuck, which is installed in the first shell, and the signal pins and the power pins both pass through the chuck; the length of the end of the signal pin protruding from the chuck is less than the length of the end of the power pin protruding from the chuck.

[0008] In one of the embodiments, the plug further comprises an insulating base, which is installed in the second shell, and the second shell can rotate around the insulating base, and the guide post slides in the sliding groove with the rotation of the second shell; the signal terminals and the power terminals are both installed in the insulating base; the insulating base is provided with a through hole and a plurality of terminal holes, the through hole is used for accommodating the signal terminals, and the terminal holes are used for accommodating the power terminals.

[0009] In one of the embodiments, the plug further comprises a support base, the insulating base is installed in the support base, and the second shell is sleeved outside the support base, and the second shell can rotate around the support base.

[0010] In one of the embodiments, the support base comprises a shell part, a guide part, a fool-proof part and a positioning part, the guide part is installed outside the shell part, the guide part extends along the circumference of the shell part, and the second shell can rotate around the guide part; the fool-proof part and the positioning part are both installed outside the shell part, and the inner side of the first shell is provided with a fool-proof groove and a positioning groove, the fool-proof groove is used for accommodating the fool-proof part, and the positioning groove is used for accommodating the positioning part.

[0011] In one of the embodiments, the plug further comprises a first gasket, a second gasket, a spring, a snap spring and a third gasket, one side of the first gasket abuts against the second shell, and the other side abuts against one side of the guide part; the second gasket is sleeved outside the shell part, one side of the spring abuts against the side of the guide part away from the first gasket, and the other side abuts against the second gasket; the snap spring is clamped to the inner side of the second shell, the third gasket is sleeved outside the shell part, one side of the third gasket abuts against the snap spring, and the other side abuts against the second gasket.

[0012] In one of the embodiments, the outer side of the first shell is provided with an identification groove corresponding to the fool-proof groove.

[0013] In one of the embodiments, the outer side of the second shell is provided with a locking hole communicating with the sliding groove, and the locking hole is arranged corresponding to the first limiting point.

[0014] Compared with the prior art, the present application has the following beneficial effects: The electric connector with the hierarchical unlocking function has first and second limiting points provided by a sliding groove; when the guide column is located at the second limiting point, the signal pin is separated from the signal terminal to make the power supply be powered off, and the plug and the socket are in a first unlocking state; when the guide column is separated from the sliding groove, the power supply pin is separated from the power supply terminal, and the plug and the socket are in a second unlocking state, so that the plug is pulled out after the power supply is powered off, the electric arc caused by the power supply terminal being disconnected is avoided, and the safety is reliable, and the service life of the plug is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of the electric connector with the hierarchical unlocking function is shown in an embodiment of the present application. Figure 2 A structure schematic view of the socket in the electric connector with the hierarchical unlocking function is shown in the embodiment. Figure 1 Figure 3 A structure schematic view of the plug in the electric connector with the hierarchical unlocking function is shown in the embodiment. Figure 1 Figure 4 A sectional view along line A-A in the embodiment. Figure 3 Figure 5 A structure schematic view of the second shell in the plug is shown in the embodiment. Figure 3 Figure 6 A structure schematic view of the socket and the plug in the electric connector with the hierarchical unlocking function in a locking state is shown in the embodiment. Figure 1 Figure 7 A structure schematic view of the socket and the plug in the electric connector with the hierarchical unlocking function in a first unlocking state is shown in the embodiment. Figure 1 Figure 8 A structure schematic view of the socket and the plug in the electric connector with the hierarchical unlocking function in a second unlocking state is shown in the embodiment. Figure 1

[0016] The meanings of the reference signs in the drawings are as follows: 100, the electric connector with the hierarchical unlocking function; 10, the socket; 11, the first shell; 111, the fool-proof groove; 112, the positioning groove; 113, the identification groove; 12, the guide column; 13, the signal pin; 14, the power supply pin; 15, the chuck; 16, the signal transmission pin; ​​​​​​​20, plug; 21, second housing; 211, sliding slot; 2111, first connecting section; 2112, second connecting section; 2113, third connecting section; 212, first limiting point; 213, second limiting point; 214, locking hole; 22, signal terminal; 23, power terminal; 24, insulating seat; 241, through hole; 242, terminal hole; 25, support seat; 251, housing part; 252, guide part; 253, foolproof part; 254, positioning part; 26, first gasket; 27, second gasket; 28, elastic sheet; 29, clamping spring. DETAILED DESCRIPTION

[0017] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0019] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0020] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixing" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0022] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0023] Please refer to Figures 1 to 8For an embodiment of the application, the electrical connector 100 with hierarchical unlocking function includes a socket 10 and a plug 20 used in pair with the socket 10; the socket 10 includes a first housing 11, a guide column 12, signal pins 13 and a plurality of power pins 14, the guide column 12 is installed on the outside of the first housing 11, and the signal pins 13 and the power pins 14 are both installed in the first housing 11; the plug 20 includes a second housing 21, signal terminals 22 and a plurality of power terminals 23, the inside of the second housing 21 is provided with a sliding groove 211 to accommodate the guide column 12; the sliding groove 211 is provided with a first limiting point 212 and a second limiting point 213 along the extension direction; the signal terminals 22 and the power terminals 23 are both installed in the second housing 21, the signal pins 13 are used to electrically connect the signal terminals 22, and the power pins 14 are used to electrically connect the power terminals 23; when the guide column 12 is located at the first limiting point 212, the plug 20 and the socket 10 are in a locked state; when the guide column 12 is located at the second limiting point 213, the signal pins 13 are separated from the signal terminals 22 to make the power off, and the plug 20 and the socket 10 are in a first unlocking state; when the guide column 12 is separated from the sliding groove 211, the power pins 14 are separated from the power terminals 23, and the plug 20 and the socket 10 are in a second unlocking state. The electrical connector 100 with hierarchical unlocking function of the embodiment is provided with the first limiting point 212 and the second limiting point 213 through the sliding groove 211; when the guide column 12 is located at the second limiting point 213, the signal pins 13 are separated from the signal terminals 22 to make the power off, and the plug 20 and the socket 10 are in a first unlocking state; when the guide column 12 is separated from the sliding groove 211, the power pins 14 are separated from the power terminals 23, and the plug 20 and the socket 10 are in a second unlocking state, thereby realizing the power off before pulling out the plug 20, avoiding the electric arc caused by the disconnection of the power terminals 23, being safe and reliable, and prolonging the service life of the plug 20.

[0024] As Figure 1 With Figure 2 As shown in the embodiment, the socket 10 includes a first housing 11, a guide column 12, signal pins 13 and a plurality of power pins 14, optionally, the inside of the first housing 11 is provided with a fool-proof groove 111 and a positioning groove 112, further, the positioning groove 112 is a plurality of, and each positioning groove 112 is arranged along the periphery of the first housing 11; in an embodiment, the outside of the first housing 11 is provided with an identification groove 113 corresponding to the fool-proof groove 111, so as to be quickly identified. The guide column 12 is installed on the outside of the first housing 11, optionally, the guide column 12 is a plurality of, and each guide column 12 is arranged along the outside of the first housing 11; the signal pins 13 and the power pins 14 are both installed in the first housing 11.

[0025] In an embodiment, the socket 10 further comprises a chuck 15 mounted in the first housing 11, the signal pin 13 and the power pin 14 both penetrating the chuck 15; optionally, the length of the signal pin 13 protruding from one end of the chuck 15 is less than the length of the power pin 14 protruding from one end of the chuck 15. Further, the socket 10 further comprises a plurality of signal transmission pins 16, each signal transmission pin 16 penetrating the chuck 15, the length of the signal transmission pin 16 protruding from one end of the chuck 15 is greater than the length of the signal pin 13 protruding from one end of the chuck 15, and less than the length of the power pin 14 protruding from one end of the chuck 15.

[0026] As shown in Figure 1 , Figures 3 to 5 The plug 20 comprises a second housing 21, a signal terminal 22 and a plurality of power terminals 23, the inner side of the second housing 21 is provided with a sliding groove 211 to accommodate the guide column 12; the sliding groove 211 is provided with a first limiting point 212 and a second limiting point 213 along the extension direction; optionally, the outer side of the second housing 21 is provided with a locking hole 214 communicating with the sliding groove 211, the locking hole 214 is arranged corresponding to the first limiting point 212; further, the outer side of the second housing 21 is further provided with anti-skid lines to facilitate the rotation of the housing. The signal terminal 22 and the power terminal 23 are both mounted in the second housing 21, the signal pin 13 is used for electrically connecting the signal terminal 22, and the power pin 14 is used for electrically connecting the power terminal 23; when the guide column 12 is located at the first limiting point 212, the signal pin 13 is electrically connected to the signal terminal 22, and the power pin 14 is electrically connected to the power terminal 23, the plug 20 and the socket 10 are in a locked state; when the guide column 12 is located at the second limiting point 213, the signal pin 13 is disconnected from the signal terminal 22 to make the power off, the plug 20 and the socket 10 are in a first unlocking state; when the guide column 12 is disconnected from the sliding groove 211, the power pin 14 is disconnected from the power terminal 23, the plug 20 and the socket 10 are in a second unlocking state, thereby realizing the power-off first and then pulling out the plug 20, and avoiding the electric arc caused by the disconnection of the power terminal 23.

[0027] As shown in Figure 5As shown, the sliding groove 211 extends along the circumference of the second shell 21, and extends from the middle of the second shell 21 towards the end of the second shell 21 close to the first shell 11; optionally, the sliding groove 211 comprises a first connecting section 2111, a second connecting section 2112 and a third connecting section 2113 connected in sequence, the third connecting section 2113 corresponds to the end of the second shell 21 close to the first shell 11; the first limiting point 212 is arranged at the first connecting section 2111; the second limiting point 213 is arranged at the connection between the first connecting section 2111 and the second connecting section 2112. Further, the first connecting section 2111 is arc-shaped, the second connecting section 2112 is an elongated transition section, and the third connecting section 2113 is arc-shaped; in an embodiment, the second connecting section 2112 is a smooth section, the first limiting point 212 is a groove, and the second limiting point 213 is a circular-arc convex point.

[0028] As shown in the drawings, Figure 3 As shown in the drawings, Figure 4 As shown, the plug 20 further comprises an insulating base 24, the insulating base 24 is installed in the second shell 21, the second shell 21 can rotate around the insulating base 24, and the guide post 12 is slidably arranged in the sliding groove 211 with the rotation of the second shell 21; the signal terminal 22 and the power terminal 23 are both installed in the insulating base 24; the insulating base 24 is provided with a through hole 241 and a plurality of terminal holes 242, the through hole 241 is used for accommodating the signal terminal 22, and the terminal hole 242 is used for accommodating the power terminal 23. Optionally, the through hole 241 and the terminal hole 242 towards the end of the socket 10 are both trumpet-shaped, which plays a guiding role when the signal pin 13 is inserted into the signal terminal 22 and the power pin 14 is inserted into the power terminal 23. In an embodiment, the plug 20 further comprises a plurality of signal auxiliary terminals (not labeled in the drawings), the signal auxiliary terminals are installed in the insulating base 24, and the signal auxiliary terminals correspond to the signal transmission pins 16 one by one; the signal transmission pins 16 are used for electrically connecting the signal auxiliary terminals.

[0029] As shown in the drawings, Figure 3 As shown in the drawings, Figure 4The plug 20 further comprises a supporting seat 25, the insulating seat 24 is installed in the supporting seat 25, the second shell 21 is sleeved outside the supporting seat 25, and the second shell 21 can rotate around the supporting seat 25. Optionally, the supporting seat 25 comprises a shell part 251, a guide part 252, a foolproof part 253 and a positioning part 254, the guide part 252 is installed outside the shell part 251, the guide part 252 extends along the periphery of the shell part 251, and the second shell 21 can rotate around the guide part 252; the foolproof part 253 and the positioning part 254 are both installed outside the shell part 251, the foolproof groove 111 is used for accommodating the foolproof part 253, and the positioning groove 112 is used for accommodating the positioning part 254; the positioning part 254 is in one-to-one correspondence with the positioning groove 112.

[0030] As shown in Figure 4 , the plug 20 further comprises a first gasket 26, a second gasket 27, an elastic sheet 28, a circlip 29 and a third gasket (not marked in the figure), one side of the first gasket 26 abuts against the second shell 21, and the other side abuts against one side of the guide part 252; the second gasket 27 is sleeved outside the shell part 251, one side of the elastic sheet 28 abuts against the side of the guide part 252 away from the first gasket 26, and the other side abuts against the second gasket 27; the circlip 29 is clamped on the inner side of the second shell 21, the third gasket is sleeved outside the shell part 251, one side of the third gasket abuts against the circlip 29, and the other side abuts against the second gasket 27; optionally, the third gasket is a seven-shaped ring. When the signal pin 13 is inserted into the signal terminal 22 and the power pin 14 is inserted into the power terminal 23, if the signal pin 13 or the power pin 14 contacts the insulating seat 24, the elastic sheet 28 will be compressed, thereby playing a buffering role and avoiding damage to the signal pin 13 or the power pin 14.

[0031] As shown in Figure 6 , when the plug 20 needs to be connected with the socket 10, the foolproof part 253 is inserted into the foolproof groove 111, the positioning part 254 is inserted into the positioning groove 112, and then the second shell 21 is rotated, so that the guide column 12 slides along the third connecting section 2113, the second connecting section 2112 and the first connecting section 2111 in sequence until the guide column 12 is located at the first limiting point 212, at this time, the guide column 12 can be observed through the locking hole 214, the signal pin 13 contacts the signal terminal 22, and the power pin 14 contacts the power terminal 23.

[0032] As shown in Figure 7As shown, when the plug 20 needs to be pulled out of the socket 10, the second shell 21 is reversely rotated, the guide column 12 slides from the first connecting section 2111 to the second connecting section 2112, and when the guide column 12 abuts against the second limiting point 213, since the second limiting point 213 is a circular arc convex point, a jam occurs, the force for rotating the second shell 21 needs to be increased, thereby achieving a certain pause delay effect, at this time, the signal pin 13 is separated from the signal terminal 22 to make the power supply be powered off, the power supply pin 14 is still in contact with the power supply terminal 23, and the plug 20 and the socket 10 are in a first unlocking state.

[0033] Then, as shown in Figure 8 the second connecting section 2112 is a smooth extension section, thereby achieving a delay effect, finally, the guide column 12 is separated from the third connecting section 2113, at this time, the signal transmission pin 16 is separated from the signal auxiliary terminal, the power supply pin 14 is separated from the power supply terminal 23, and the plug 20 and the socket 10 are in a second unlocking state, and the plug 20 can be pulled out.

[0034] The electrical connector 100 with the hierarchical unlocking function has the length of one end of the signal pin 13 protruding from the chuck 15 smaller than the length of one end of the power supply pin 14 protruding from the chuck 15, when the plug 20 is pulled out of the socket 10, the signal pin 13 is separated from the signal terminal 22 to make the power supply be powered off, and then the power supply pin 14 is separated from the power supply terminal 23, the first limiting point 212 plays a role in jamming and delay, the smooth extension design of the second connecting section 2112 plays a role in delay, avoids the guide column 12 from being rapidly separated from the sliding groove 211, ensures that the time interval between the time when the signal pin 13 is separated from the signal terminal 22 and the time when the power supply terminal 23 is separated from the power supply terminal 23 is long enough, and prevents an electric arc from being caused in the instant when the power supply terminal 23 is disconnected. The signal pin 13 is separated from the signal terminal 22 to make the power supply be powered off, and then the plug 20 is pulled out after delay, thereby avoiding an electric arc caused in the instant when the power supply terminal 23 is disconnected, and being safe and reliable.

[0035] The electrical connector 100 with the hierarchical unlocking function has the first limiting point 212 and the second limiting point 213 arranged in the sliding groove 211, when the guide column 12 is located at the second limiting point 213, the signal pin 13 is separated from the signal terminal 22 to make the power supply be powered off, and the plug 20 and the socket 10 are in a first unlocking state, when the guide column 12 is separated from the sliding groove 211, the power supply pin 14 is separated from the power supply terminal 23, and the plug 20 and the socket 10 are in a second unlocking state, thereby realizing that the power supply is powered off first and then the plug 20 is pulled out, avoiding an electric arc caused in the instant when the power supply terminal 23 is disconnected, being safe and reliable, and prolonging the service life of the plug 20.

[0036] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0037] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.

Claims

1. An electrical connector with a graded unlocking function, characterized in that, The device includes a plug for use with a socket; the socket includes a first housing, a guide post, a signal pin, and multiple power pins, the guide post being installed on the outside of the first housing, and the signal pin and power pin being installed inside the first housing; the plug includes a second housing, a signal terminal, and multiple power terminals, the inner side of the second housing is provided with a groove to accommodate the guide post; the groove is provided with a first limiting point and a second limiting point along its extension direction; the signal terminal and the power terminal are both installed in the second housing, the signal pin is used to electrically connect to the signal terminal, and the power pin is used to electrically connect to the power terminal; when the guide post is located at the first limiting point, the plug and the socket are in a locked state; when the guide post is located at the second limiting point, the signal pin disengages from the signal terminal to de-energize the power, and the plug and the socket are in a first-level unlocked state; when the guide post disengages from the groove, the power pin disengages from the power terminal, and the plug and the socket are in a second-level unlocked state.

2. The electrical connector with graded unlocking function according to claim 1, characterized in that, The slide extends circumferentially along the second housing and extends from the middle of the second housing toward the end of the second housing closer to the first housing; the slide includes a first connecting segment, a second connecting segment and a third connecting segment connected in sequence, the third connecting segment corresponding to the end of the second housing closer to the first housing; the first limiting point is disposed at the first connecting segment; the second limiting point is disposed at the connection between the first connecting segment and the second connecting segment.

3. The electrical connector with graded unlocking function according to claim 2, characterized in that, The first connecting segment is arc-shaped, the second connecting segment is an extended transition segment, and the third connecting segment is arc-shaped; the first limiting point is a groove, and the second limiting point is a circular arc protrusion.

4. The electrical connector with graded unlocking function according to claim 1, characterized in that, The socket also includes a chuck, which is installed inside the first housing. Both the signal pin and the power pin pass through the chuck. The length of the end of the signal pin protruding from the chuck is less than the length of the end of the power pin protruding from the chuck.

5. The electrical connector with graded unlocking function according to claim 1, characterized in that, The plug also includes an insulating base, which is installed inside the second housing. The second housing is rotatable around the insulating base, and the guide post slides in the groove as the second housing rotates. The signal terminal and the power terminal are both installed on the insulating base. The insulating base has a through hole and a plurality of terminal holes. The through hole is used to accommodate the signal terminal, and the terminal holes are used to accommodate the power terminal.

6. The electrical connector with graded unlocking function according to claim 5, characterized in that, The plug also includes a support base, the insulating base is installed inside the support base, and the second outer shell is sleeved outside the support base, and the second outer shell can rotate around the support base.

7. The electrical connector with graded unlocking function according to claim 6, characterized in that, The support base includes a housing portion, a guide portion, a foolproof portion, and a positioning portion. The guide portion is installed on the outside of the housing portion and extends along the periphery of the housing portion. The second housing can rotate around the guide portion. The foolproof portion and the positioning portion are both installed on the outside of the housing portion. The inner side of the first housing is provided with a foolproof groove and a positioning groove. The foolproof groove is used to accommodate the foolproof portion, and the positioning groove is used to accommodate the positioning portion.

8. The electrical connector with graded unlocking function according to claim 7, characterized in that, The plug further includes a first washer, a second washer, a spring, a retaining spring, and a third washer. One side of the first washer abuts against the second housing, and the other side abuts against one side of the guide portion. The second washer is sleeved on the outside of the housing portion. One side of the spring abuts against the guide portion away from the first washer, and the other side abuts against the second washer. The retaining spring is snapped into the inside of the second housing. The third washer is sleeved on the outside of the housing portion. One side of the third washer abuts against the retaining spring, and the other side abuts against the second washer.

9. The electrical connector with graded unlocking function according to claim 7, characterized in that, The outer side of the first housing is provided with an identification groove corresponding to the error-proof groove.

10. The electrical connector with graded unlocking function according to claim 1, characterized in that, The outer side of the second housing is provided with a locking hole that communicates with the slide groove, and the locking hole is provided corresponding to the first limiting point.

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