Wire end connector, board end connector and connector assembly

Abstract

The invention discloses a wire end connector, a board end connector and a connector assembly, and relates to the technical field of connectors, the wire end connector comprises a shell, a plurality of first terminal modules, two fasteners and a bolt, the shell comprises a base and a plurality of protruding parts, the protruding parts are arranged on one surface of the base at intervals, and the first terminal modules are connected with the two fasteners. The shell is provided with a plurality of first through holes and a second through hole which are arranged in parallel, one first through hole penetrates through one protruding part and the base, and the second through hole penetrates through the base; each first terminal module is arranged in one first through hole in a penetrating manner; each fastener is movably arranged on one side wall of the base, and one end part of each fastener is exposed on one surface of the base; the plug pin is movably arranged in the second through hole in a penetrating mode, the plug pin can move in the axial direction of the second through hole and rotate in the circumferential direction of the second through hole, and the plug pin has a locking state exposed out of the second through hole and an unlocking state retracted into the second through hole. The wire end connector provided by the invention aims to prevent a user from mistakenly dismounting the connector.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a line-end connector, a board-end connector, and a connector assembly. Background Art

[0002] Electrical connectors are typically used at the output end of a power supply. They are interface components that transmit electrical energy from a power module (such as an uninterruptible power supply, battery pack, or power distribution cabinet) to downstream devices. They are often used to distribute the main power supply to various electrical devices.

[0003] In the prior art, in order to prevent users from accidentally removing the line-end connector and the board-end connector, fasteners are provided on both sides of the line-end connector to engage with the board-end connector, and the line-end connector is also locked to the PCB board by screws, but the screws are inconvenient to remove. Summary of the Invention

[0004] The main purpose of the present invention is to provide a wire-end connector, a board-end connector and a connector assembly, which are intended to prevent users from incorrectly operating and removing the connector.

[0005] To achieve the above-mentioned objectives, the wire end connector proposed in the present invention includes a shell, a plurality of first terminal modules, two fasteners and a pin, the shell includes a base and a plurality of protrusions, the plurality of protrusions are spaced apart on a surface of the base, the shell is provided with a plurality of first through holes and a second through hole arranged in parallel, a first through hole passes through a protrusion and the base, and the second through hole passes through the base; each of the first terminal modules is passed through a first through hole; each of the fasteners is movably provided on a side wall of the base, and one end portion of each of the fasteners is exposed on a surface of the base; the pin is movably passed through the second through hole, the pin can move along the axial direction of the second through hole, and rotate along the circumferential direction of the second through hole, and the pin has a locked state exposed in the second through hole and an unlocked state retracted in the second through hole.

[0006] In one embodiment, the pin includes a column and an extension portion, the column is movably inserted into the second through hole, the extension portion is provided at one end of the column and extends outward along the radial direction of the column, and the extension portion is used to engage and connect with the board-end connector.

[0007] In one embodiment, there are two extending portions, and the two extending portions are symmetrically arranged on opposite sides of one end of the column with respect to the center of the column.

[0008] In one embodiment, a first step is provided on the outer circumference of the column, and the first step extends along the circumferential direction of the column;

[0009] A first limiting portion is protruded from the inner wall of the second through hole. When the latch is in the unlocked state, the first step abuts against one side of the first limiting portion to prevent the latch from moving in the reverse direction.

[0010] In one embodiment, the latch further includes a knob, which is provided at the other end of the column away from the extension portion. Driving the knob can drive the column and the extension portion to move or rotate.

[0011] In one embodiment, the wire end connector further includes an elastic member, which is sleeved on the outer circumference of the column, one end of the elastic member abuts against the other side of the first limiting portion, and the other end of the elastic member abuts against a surface of the knob facing the extension portion.

[0012] In one embodiment, the knob is provided with two rotary arms connected to opposite sides of the knob, and the length of one rotary arm is greater than the distance between the circumference of the knob and the housing to distinguish the rotation direction of the knob.

[0013] In one embodiment, a second limiting portion is protruded from the outer peripheral wall of the column, and a second step is provided on the inner wall of the second through hole. The second step extends along the axial direction of the second through hole. When the latch is in the unlocked state, the second limiting portion abuts against the second step to prevent the latch from rotating in the opposite direction.

[0014] The present invention also proposes a board-end connector, comprising a shell, a plurality of second terminal modules and two hooks, wherein the shell is provided with a plurality of third through holes and a fourth through hole arranged at intervals; each of the second terminal modules is passed through one of the third through holes; and each of the hooks is arranged on a side surface of the shell.

[0015] The present invention also proposes a connector assembly, comprising the wire-end connector as described above and the board-end connector as described above, wherein the protrusion of the wire-end connector is plug-connected with the third through hole of the board-end connector, one end of the fastener is engaged with the hook, and the pin is movably inserted into the fourth through hole and switched to the locked state to fixedly connect the wire-end connector and the board-end connector.

[0016] The wire-end connector in the technical solution of the present invention is provided with a latch having a locked state and an unlocked state on the basis of a plug-in connection and a two-button snap connection. When the wire-end connector is connected to the board-end connector, the latch is driven to switch to the locked state, and the latch can be stuck in the board-end connector. At this time, the wire-end connector and the board-end connector will not be disconnected even if they are subjected to external force or the fastener is opened, thereby improving the connection stability between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of a wire end connector provided by the present invention;

[0019] Figure 2 A schematic structural diagram of another embodiment of the line end connector provided by the present invention;

[0020] Figure 3 A schematic structural diagram of another embodiment of the line end connector provided by the present invention;

[0021] Figure 4 A schematic structural diagram of another embodiment of the line end connector provided by the present invention;

[0022] Figure 5 A schematic structural diagram of an embodiment of a housing in a wire end connector provided by the present invention;

[0023] Figure 6 for Figure 5 A partial enlarged view of point A in the middle;

[0024] Figure 7 A schematic structural diagram of yet another embodiment of the line end connector provided by the present invention;

[0025] Figure 8 A schematic structural diagram of yet another embodiment of a line end connector provided by the present invention;

[0026] Figure 9 for Figure 8 Schematic diagram of the cross section at AA in the middle;

[0027] Figure 10 A schematic structural diagram of an embodiment of a plug in a wire-end connector provided by the present invention;

[0028] Figure 11 A schematic structural diagram of an embodiment of a board-end connector provided by the present invention;

[0029] Figure 12 This is a structural schematic diagram of an embodiment of a connector assembly provided by the present invention.

[0030] Description of Figure Numbers:

[0031] 100, connector assembly; 10, wire end connector; 1, housing; 11, base; 12, protrusion; 13, first through hole; 14, second through hole; 141, first limiting portion; 142, second step; 2, first terminal module; 3, buckle; 4, latch; 41, column; 411, first step; 412, second limiting portion; 42, extension; 43, knob; 431, rotating arm; 5, elastic member; 20, board end connector; 6, shell; 61, third through hole; 62, fourth through hole; 7, second terminal module; 8, hook;

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, for example, "A and / or B" includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

[0036] The electrical connector is usually used at the output end of the power supply, which is an interface component for transmitting electrical energy from a power supply module (such as an uninterruptible power supply, a battery pack, a power distribution cabinet) to downstream equipment, and is often used to distribute the main power supply to each power-consuming equipment.

[0037] In the prior art, in order to prevent users from accidentally removing the line-end connector and the board-end connector, fasteners are provided on both sides of the line-end connector to engage with the board-end connector, and the line-end connector is also locked to the PCB board by screws, but the screws are inconvenient to remove.

[0038] The present invention provides a wire-end connector, a board-end connector, and a connector assembly, which are intended to prevent users from erroneously operating and removing the connector.

[0039] See also Figures 1 to 10 In one embodiment of the present invention, the wire end connector 10 includes a shell 1, a plurality of first terminal modules 2, two fasteners 3 and a latch 4. The shell 1 includes a base 11 and a plurality of protrusions 12. The plurality of protrusions 12 are spaced apart on a surface of the base 11. The shell 1 is provided with a plurality of first through holes 13 and a second through hole 14 arranged in parallel. A first through hole 13 passes through a protrusion 12 and the base 11, and the second through hole 14 passes through the base 11. Each first terminal module 2 is passed through a first through hole 13. Each fastener 3 is movably provided on a side wall of the base 11, and one end portion of each fastener 3 is exposed on a surface of the base 11. The latch 4 is movably provided in the second through hole 14. The latch 4 can move along the axial direction of the second through hole 14 and rotate along the circumferential direction of the second through hole 14. The latch 4 has a locked state exposed in the second through hole 14 and an unlocked state retracted in the second through hole 14.

[0040] In this embodiment, the electrical connector is used for a wire end, and the housing 1 is made of an insulating material, such as hard plastic or hard rubber, to prevent current from leaking outward through the housing 1 and causing problems such as short circuits. The housing 1 includes a base 11 and a plurality of protrusions 12. The base 11 and the plurality of protrusions 12 can be integrally formed by injection molding, or can be connected together by bonding or ultrasonic welding, etc., which is not further limited here. When the connector needs to be fixed, the pin 4 is pushed axially along the second through hole 14 to an exposed position, and then rotated a certain angle so that the pin 4 switches to a locked state and engages with the board-end connector 20. The protrusion 12 is plugged into the board-end connector 20 to form a first re-positioning, the fastener 3 is engaged with the hook 8 to form a second fixation, and the pin 4 is locked to form a third mechanical lock, thereby improving the connection strength between the wire-end connector 10 and the board-end connector 20.

[0041] The first terminal module 2 is a tubular structure with a through-hole housing. The specific material can be copper or aluminum. The first terminal module 2 is inserted into the first through hole 13. The connection between the first terminal module 2 and the wall of the first through hole 13 can be a snap-on connection or a plug-in connection. An insulating post is inserted into the housing of the first terminal module 2 and connected to the wall of the housing. Furthermore, one end of the insulating post is detachably connected to the wall of the housing, and the specific connection method can be a threaded connection or a plug-in connection. The insulating post is made of an insulating material such as silicone or rubber to prevent electric shock caused by accidental finger contact. One end of the insulating post is connected to the wall of the housing, thereby dividing the housing within the first terminal module 2 into a first housing chamber and a second housing chamber. The other end of the insulating post extends from the wall to the opening of the first housing chamber. The opening of the first housing chamber is used to insert another electrical connector. The ring terminal is set in the wall of the first housing chamber. The second housing chamber is used to weld electrical connection wires to realize the input or output of current. One side opening of the first through hole 13 is used to plug in another electrical connector. An insulating member is provided on the end face of the first terminal module 2 facing the opening. The insulating member is a ring-shaped structure of an insulating material, such as a silicone ring or a rubber ring, to prevent electric shock caused by accidentally touching the end face of the tubular metal terminal.

[0042] The electrical connector has a U-shaped baffle on one side wall of the base 11, and a fastener 3 rotatably connected to the two side panels of the U-shaped baffle. One end of the fastener 3 is exposed on a surface of a protrusion 12 provided on the base 11, and is used to engage with another electrical connector to enhance the connection strength between the two connectors and prevent accidental operation that could cause the two to tear apart and cause electrical connection failure. The fastener 3 is connected to the two side panels of the U-shaped baffle through a shaft hole, allowing the fastener 3 to rotate relative to the U-shaped baffle, thereby achieving the effect of engaging and disengaging with the other electrical connector.

[0043] The wire-end connector 10 in the technical solution of the present invention is provided with a latch 4 having a locked state and an unlocked state on the basis of a plug-in connection and a two-button snap connection. When the wire-end connector 10 is connected to the board-end connector 20, the latch 4 is driven to switch to the locked state, and the latch 4 can be stuck in the board-end connector 20. At this time, the wire-end connector 10 and the board-end connector 20 will not be disconnected even if subjected to external force or the fastener 3 is opened, thereby improving the connection stability between the two.

[0044] In an embodiment of the present invention, the pin 4 includes a column 41 and an extension portion 42. The column 41 is movably inserted into the second through hole 14. The extension portion 42 is provided at one end of the column 41 and extends outward along the radial direction of the column 41. The extension portion 42 is used to engage and connect with the board-end connector 20.

[0045] In this embodiment, the column 41 is a cylindrical or prismatic main structure, specifically made of metal or hard plastic, and is used to transmit axial and circumferential motion forces while ensuring stable movement and rotation of the latch 4 within the second through-hole 14. The extension 42 is a protrusion or snap-fit ​​structure extending outward from the end of the column 41 along its circumference. Specifically, it can be a sheet-like, hook-like, or plate-like component integrally formed with the column 41. It is used to form a snap fit with a corresponding structure on the board-end connector 20 to limit the displacement of the latch 4 in the locked state.

[0046] In the embodiment of the present invention, there are two extending portions 42 , and the two extending portions 42 are symmetrically disposed on opposite sides of one end of the column 41 with respect to the center of the column 41 .

[0047] In this embodiment, two extensions 42 are provided at one end of the column 41 of the latch 4, symmetrically located on either side of the column 41. When the latch 4 is locked, the two extensions 42 engage the inner walls of the fourth through hole 62 of the board-mounted connector 20, constraining the latch 4 both circumferentially and axially. The symmetrical distribution of the extensions 42 balances forces on both sides, preventing deflection or jamming caused by unilateral force.

[0048] In the embodiment of the present invention, a first step 411 is provided on the outer periphery of the column 41 , and the first step 411 extends along the circumferential direction of the column 41 ;

[0049] A first limiting portion 141 is protruded from the inner wall of the second through hole 14 . When the latch 4 is in the unlocked state, the first step 411 abuts against one side of the first limiting portion 141 to prevent the latch 4 from moving in the reverse direction.

[0050] In this embodiment, the first step 411 is an annular raised structure formed circumferentially on the outer surface of the column 41. Specifically, it can be achieved by turning or injection molding, and its width and height can be adjusted according to the size of the column 41. The first limiting portion 141 is a blocking structure that is partially raised on the inner wall of the second through hole 14. Specifically, it can be achieved by stamping or mold forming, and its position corresponds to the movement trajectory of the first step 411. When the latch 4 is switched to the unlocked state, the column 41 moves axially along the second through hole 14 until the first step 411 contacts the first limiting portion 141. At this time, the end face of the first step 411 forms surface contact with the side face of the first limiting portion 141. Because the first step 411 extends continuously along the circumference, when the latch 4 is subjected to an external force and moves in the opposite direction, the first limiting portion 141 blocks the axial displacement path of the first step 411, thereby preventing the column 41 from disengaging from the second through hole 14.

[0051] like Figures 7 to 9As shown, in another embodiment, the first stopper 141 is a separate component that passes through a clearance hole defined in the sidewall of the base 11 and into the second through hole 14, where it abuts against the outer circumferential wall of the latch 4. When the latch 4 is unlocked, the column 41 moves axially along the second through hole 14 until the first step 411 contacts the first stopper 141. At this point, the end surface of the first step 411 forms surface contact with the side surface of the first stopper 141, preventing the latch 4 from being removed from the second through hole 14.

[0052] In an embodiment of the present invention, the latch 4 further includes a knob 43, which is located at the other end of the column 41 away from the extension 42. Driving the knob 43 can cause the column 41 and the extension 42 to move or rotate. The knob 43 is fixed to the end of the column 41 by a threaded connection or a snap-fit ​​method. When an axial thrust is applied to the knob 43, the column 41 moves axially along the second through hole 14, causing the extension 42 to enter or exit the locked position. When a rotational torque is applied to the knob 43, the column 41 rotates circumferentially along the second through hole 14, causing the extension 42 to form an angular limit between the fourth through hole 62 of the board-end connector 20.

[0053] In this embodiment, the knob 43 is a manually operated component installed at the end of the column 41, and can be implemented by injection-molded plastic or metal parts. The surface of the knob 43 can be provided with anti-slip patterns to increase friction.

[0054] In an embodiment of the present invention, the wire end connector 10 further includes an elastic member 5, which is sleeved on the outer periphery of the column 41, one end of the elastic member 5 abuts against the other side of the first limiting portion 141, and the other end of the elastic member 5 abuts against a surface of the knob 43 facing the extension portion 42.

[0055] In this embodiment, the elastic member 5 is a mechanical element capable of elastic deformation, specifically a coil spring or wave spring. Its function is to provide a restoring force when the latch 4 is unlocked, causing the latch 4 to automatically return to its original position. When the knob 43 is pushed, the column 41 drives the extension 42 to move axially along the second through hole 14. At this time, the elastic member 5 is squeezed by the knob 43 and the first stop 141, causing it to compress and deform. When the external force is removed, the elastic member 5 recovers its deformation, pushing the knob 43 in the opposite direction, causing the column 41 to return to its initial position.

[0056] In an embodiment of the present invention, the knob 43 is provided with two arms 431 connected to opposite sides of the knob 43 . The length of one arm 431 is greater than the distance between the circumference of the knob 43 and the housing 1 to distinguish the rotation direction of the knob 43 .

[0057] In this embodiment, when rotating knob 43, the operator determines the direction of rotation by observing the relative position of the two arms 431 and housing 1. The longer arm 431 physically blocks the knob during clockwise rotation, while remaining free to move during counterclockwise rotation. This provides directional, tactile feedback, preventing confusion about the direction of rotation due to misoperation.

[0058] In an embodiment of the present invention, a second limiting portion 412 is protruded from the outer peripheral wall of the column 41, and a second step 142 is provided on the inner wall of the second through hole 14. The second step 142 extends along the axial direction of the second through hole 14. When the latch 4 is in the unlocked state, the second limiting portion 412 abuts against the second step 142 to prevent the latch 4 from rotating in the opposite direction.

[0059] In this embodiment, when the latch 4 is in the unlocked state, the column 41 moves axially to a position where the second limit portion 412 corresponds to the second step 142. At this time, if an attempt is made to rotate the latch 4 in the opposite direction, the second limit portion 412 will interfere with the second step 142, preventing the latch 4 from rotating further.

[0060] See also Figure 11 The present invention also proposes a board-end connector 20 including a shell 6, a plurality of second terminal modules 7 and two hooks 8. The shell 6 is provided with a plurality of third through holes 61 and fourth through holes 62 arranged at intervals; each second terminal module 7 is passed through a third through hole 61; and each hook 8 is provided on a side surface of the shell 6.

[0061] In this embodiment, the housing 6 is a support structure that supports the terminal module and the hook 8. Specifically, it can be manufactured using an injection molding process, for example, using a high-temperature resistant plastic material. Its function is to provide a fixed position for the terminal module and provide external protection. The third through-hole 61 is a channel structure that extends through the housing 6 and can be designed with a rectangular or circular cross-section. It is designed to plug into the protrusion 12 of the line-end connector 10 to achieve an electrical connection between the terminal modules. The fourth through-hole 62 is a channel structure spaced apart from the third through-hole 61 and can be designed as a circular through-hole. It is designed to accommodate the pin 4 of the line-end connector 10 and form a space for axial movement and circumferential rotation. The second terminal module 7 is a conductive contact component and can be designed as a copper alloy stamping. Its end can be designed as a resilient contact piece to achieve a reliable connection with the terminal of the line-end connector 10. The hook 8 is a protrusion structure with a snap-fit ​​function. Specifically, it can be a barbed hook design integrally formed on the side wall of the housing 6 to mechanically lock with the fastener 3 of the line-end connector 10.

[0062] See also Figure 12The application further provides a connector assembly 100, which comprises the wire end connector 10 and the board end connector 20 as described above, the protruding part 12 of the wire end connector 10 is connected with the third through hole 61 of the board end connector 20, one end of the buckle 3 is buckled with the hook 8, the latch 4 is movably inserted into the fourth through hole 62 and is switched to the locking state to fix the wire end connector 10 and the board end connector 20.

[0063] In the embodiment, when the board end connector 20 is connected with the wire end connector 10, the protruding part 12 of the wire end connector 10 is inserted into the third through hole 61 to complete the electrical connection of the terminal module, meanwhile, the hook 8 is buckled with the end of the buckle 3 of the wire end connector 10 to form the buckling locking. After the latch 4 of the wire end connector 10 is inserted into the fourth through hole 62, the latch 4 is switched to the locking state by the axial movement, at this time, the extension part 42 of the latch 4 is buckled with the edge of the fourth through hole 62 to prevent the latch 4 from being reversely withdrawn. The structure realizes the primary fixation by the cooperation of the hook 8 and the buckle 3, and realizes the secondary locking by the locking state of the latch 4, thereby replacing the traditional screw fixation mode.

[0064] The above description is only the exemplary embodiment of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A line end connector (10), characterized in that include: A housing (1), the housing (1) comprising a base (11) and a plurality of protrusions (12), the plurality of protrusions (12) being spaced apart and arranged on a surface of the base (11), the housing (1) being provided with a plurality of first through holes (13) and a second through hole (14) arranged in parallel, the first through hole (13) penetrating one of the protrusions (12) and the base (11), and the second through hole (14) penetrating the base (11); A plurality of first terminal modules (2), each of the first terminal modules (2) being inserted into one of the first through holes (13); Two fasteners (3), each fastener (3) is movably disposed on a side wall of the base (11), and one end portion of each fastener (3) is exposed on a surface of the base (11); and A latch (4) is movably provided in the second through hole (14), the latch (4) can move along the axial direction of the second through hole (14) and rotate along the circumferential direction of the second through hole (14), and the latch (4) has a locked state exposed in the second through hole (14) and an unlocked state retracted in the second through hole (14).

2. The wire end connector (10) according to claim 1, characterized in that The latch (4) comprises a column (41) and an extension portion (42), wherein the column (41) is movably inserted into the second through hole (14), and the extension portion (42) is provided at one end of the column (41) and extends outwardly along the radial direction of the column (41), and the extension portion (42) is used for engaging and connecting with the board-end connector (20).

3. The wire end connector (10) according to claim 2, characterized in that There are two extension portions (42), and the two extension portions (42) are symmetrically arranged on opposite sides of one end of the column (41) with respect to the center of the column (41).

4. The wire end connector (10) according to claim 2, characterized in that A first step (411) is provided on the outer periphery of the column (41), and the first step (411) is extended along the circumferential direction of the column (41); A first limiting portion (141) is protruded from the inner wall of the second through hole (14); when the latch (4) is in the unlocked state, the first step (411) abuts against one side of the first limiting portion (141) to prevent the latch (4) from moving in the reverse direction.

5. The wire end connector (10) according to claim 4, characterized in that The latch (4) further comprises a knob (43) which is arranged at the other end of the column (41) away from the extension portion (42). Driving the knob (43) can drive the column (41) and the extension portion (42) to move or rotate.

6. The wire end connector (10) according to claim 5, characterized in that The line end connector (10) further includes an elastic member (5), wherein the elastic member (5) is sleeved on the outer periphery of the column (41), one end of the elastic member (5) abuts against the other side of the first limiting portion (141), and the other end of the elastic member (5) abuts against a surface of the knob (43) facing the extension portion (42).

7. The wire end connector (10) according to claim 5, characterized in that The knob (43) is provided with two rotary arms (431), which are connected to opposite sides of the knob (43). The length of one of the rotary arms (431) is greater than the distance between the circumference of the knob (43) and the housing (1), so as to distinguish the rotation direction of the knob (43).

8. The line end connector (10) according to any one of claims 2 to 7, characterized in that: A second limiting portion (412) is convexly provided on the outer peripheral wall of the column (41), and a second step (142) is provided on the inner wall of the second through hole (14). The second step (142) extends along the axial direction of the second through hole (14). When the latch (4) is in the unlocked state, the second limiting portion (412) abuts against the second step (142) to prevent the latch (4) from rotating in the reverse direction.

9. A board-end connector (20), characterized in that: include: A housing (6), wherein the housing (6) is provided with a plurality of third through holes (61) and fourth through holes (62) arranged at intervals; a plurality of second terminal modules (7), each of the second terminal modules (7) being passed through one of the third through holes (61); and Two hooks (8), each hook (8) is arranged on a side surface of the shell (6).

10. A connector assembly (100), characterized in that: It comprises a wire-end connector (10) as described in any one of claims 1 to 8 and a board-end connector (20) as described in claim 9, wherein the protrusion (12) of the wire-end connector (10) is plug-connected with the third through hole (61) of the board-end connector (20), one end of the fastener (3) is snap-connected with the hook (8), and the pin (4) is movably inserted into the fourth through hole (62) and switched to the locked state to fix the connection between the wire-end connector (10) and the board-end connector (20).

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