A large-current connector with a lockable connection

Abstract

The present invention discloses a high-current connector that can be locked and connected, including a line end module and a board end module for matching use, the line end module and the board end module are respectively connected with a line end terminal and a board end terminal, the line end module and the board end module are both provided with a lock mounting groove, a terminal lock is installed in the lock mounting groove, the line end terminal is detachably connected to the line end module through a terminal lock provided inside the line end module, and the board end terminal is detachably connected to the board end module through a terminal lock provided inside the board end module; a knob switch is connected to the side of the line end module, a locking hook is provided on the knob switch, and a locking column that matches the knob switch is provided on the side of the board end module. This type of high-current connector that can be locked and connected can replace or replace terminals, which helps to improve the economic efficiency of product use, reduce production and maintenance costs, and has the advantages of convenient locking and opening, simple operation, long service life, good safety performance, etc.

Description

Technical Field

[0001] The present invention relates to an electrical connector, in particular to a high-current connector with a lockable connection. Background Art

[0002] Electrical connectors are commonly used electrical connection components.

[0003] In the existing connectors, generally, terminals are fixedly installed inside the connector. After the terminals are installed, the connector is not deliberately pulled out. During the assembly, production of the electrical connector or during the later use and maintenance process, when there is an error in terminal assembly or some terminals are damaged, the entire connector needs to be replaced, and the replacement difficulty and cost are relatively high. Since the connector is generally connected to wires, the cost and maintenance difficulty are further increased, affecting the economy.

[0004] In addition, in order to carry a larger current, the cross-sectional area of the current terminals of the existing high-current connectors is getting larger and larger. At the same time, for the reliability and stability of the connection, to reduce the contact impedance and solve the problem of heat generation when a large current passes through the connector, the friction holding force after the male and female terminals are inserted is designed to be larger and larger. For such high-current connectors, the existing opening method of directly grasping the connector housing and the cable by hand to pull out the connector has become very difficult to separate the connector, and there are disadvantages such as inconvenient use and difficult opening during the use process; moreover, in this direct-pull opening method of the connector, the pulling force directly acts on the terminals and the wires, which will cause the original connection displacement or loosening of the terminals and the wires, and the pulling force will directly be conducted to the installed substrate, which may damage electrical equipment such as the substrate, and thus easily damage the connector, affecting the service life of the connector, and even there are potential safety hazards.

[0005] In view of this, the purpose of the present invention is to provide a new technical solution to solve the existing technical defects. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a high-current connector with a lockable connection, which solves the technical defects existing in the prior art such as non-removable replacement of terminals, high cost of connector replacement or maintenance, difficult connection and opening, inconvenient use, easy damage, short service life, and potential safety hazards.

[0007] The technical solution adopted by the present invention to solve its technical problems is:

[0008] A large-current connector with a lockable connection, comprising a wire-end module and a board-end module used in combination. The wire-end module and the board-end module are respectively connected with a wire-end terminal and a board-end terminal. The wire-end module and the board-end module are both provided with lock catch installation grooves, and a terminal lock catch is installed in the lock catch installation grooves. The wire-end terminal is detachably connected to the wire-end module through the terminal lock catch arranged inside the wire-end module, and the board-end terminal is detachably connected to the board-end module through the terminal lock catch arranged inside the board-end module.

[0009] As an improvement of the above technical solution, the wire-end module and the board-end module are both provided with terminal installation holes. The lock catch installation groove includes a horizontal chute and a vertical receiving groove. The vertical receiving groove is vertically and communicatively connected with the horizontal chute to form a T-shaped installation groove. The side of the horizontal chute is communicatively connected with the terminal installation hole. The terminal lock catch includes a lock catch slide plate and a lock catch vertical plate perpendicularly connected to the lock catch slide plate. The lock catch slide plate is installed in the horizontal chute and can slide in the horizontal chute. The lock catch vertical plate is received in the vertical receiving groove. An elastic return arm extends inward from the inner side of the lock catch vertical plate, and the end of the elastic return arm abuts against the bottom of the vertical receiving groove. Lock catch clamping platforms are arranged on both sides of the lock catch slide plate. The wire-end terminal and the board-end terminal both have terminal locking concave rings. The lock catch clamping platforms can extend from the side of the horizontal chute into the terminal installation hole and be clamped on the terminal locking concave rings of the wire-end terminal or the board-end terminal to realize the detachable connection between the wire-end terminal and the wire-end module or the detachable connection between the board-end terminal and the board-end module.

[0010] As a further improvement of the above technical solution, the terminal lock catch is provided with a first positioning boss at the bottom of its lock catch slide plate, and a second positioning boss is provided at the upper end of the lock catch vertical plate. A first positioning recess and a second positioning recess are arranged in the lock catch installation groove. The first positioning boss and the second positioning boss are correspondingly snapped into the first positioning recess and the second positioning recess. The sizes of the first positioning recess and the second positioning recess are respectively larger than the sizes of the first positioning boss and the second positioning boss. The first positioning boss can move within the first positioning recess, and the second positioning boss can move within the second positioning recess.

[0011] As a further improvement of the above technical solution, the wire-end terminal and the board-end terminal both include a first terminal convex ring and a second terminal convex ring. The terminal locking concave ring is located between the first terminal convex ring and the second terminal convex ring. The lock catch clamping platform is provided with a clamping platform guiding inclined surface on its side to facilitate the insertion of the wire-end terminal or the board-end terminal in place. The side wall of the lock catch clamping platform is an arc-shaped side wall.

[0012] As a further improvement of the above technical solution, the terminal lock catch is a plastic lock catch integrally injection-molded. The wire-end terminal is fixedly connected with a wire-end wire, and the board-end terminal is fixedly connected with a board-end wire.

[0013] As a further improvement of the above technical solution, a knob switch is connected to the side of the line end module, and a locking hook is arranged on the knob switch; a locking column cooperating with the knob switch is arranged on the side of the board end module, and when the knob switch is rotated, the locking hook can be hooked on the locking column and lock the line end module and the board end module with each other; a cam portion is arranged on the knob switch, and when the knob switch is rotated, the cam portion can press the locking column and rely on the interaction force between the cam portion and the locking column to force the line end module and the board end module to separate from each other.

[0014] As a further improvement of the above technical solution, the locking column has a locking column plane, the locking column plane and the end surface of the board end module are located in the same plane, and the cam portion can be pressed on the locking column plane.

[0015] As a further improvement of the above technical solution, a fixing column is provided on the side of the line end module, a fixing hole matching the fixing column is provided on the knob switch, and the knob switch is installed on the fixing column through its fixing hole and can rotate around the fixing column;

[0016] As a further improvement of the above technical solution, a fixing column cap is provided at the outer end of the fixing column, and the fixing column cap is used to limit the knob switch at the rotating part of the fixing column;

[0017] As a further improvement of the above technical solution, the fixed column cap includes a cap portion and a connecting portion, and a fixing hole countersunk platform is arranged at the periphery of the outer opening of the fixing hole of the knob switch, the cap portion of the fixed column cap is installed at the fixing hole countersunk platform, a cap connecting groove is provided at the outer end portion of the fixing column, and the connecting portion of the fixed column cap is fixedly connected in the cap connecting groove.

[0018] As a further improvement of the above technical solution, the knob switch is provided with a hook arm, and the locking hook is located at the outer end of the hook arm. In the process of transitioning from the hook arm to the locking hook, the cross-section of the hook arm gradually decreases, and the locking hook forms a hook recess on the knob switch, and the size of the hook recess matches the size of the locking column.

[0019] As a further improvement of the above technical solution, the knob switch is further provided with a first knob force arm and a second knob force arm, the first knob force arm forms a first knob force recess on the knob switch, the second knob force arm forms a second knob force recess on the knob switch, and a third knob force recess is formed between the first knob force arm and the second knob force arm;

[0020] As a further improvement of the above technical solution, a rotation limit convex column is provided inside the knob switch, and a rotation limit concave position for cooperating with the rotation limit convex column is provided on the side of the wire end module. The rotation limit convex column extends into the rotation limit concave position and is limited by the side wall of the rotation limit concave position.

[0021] The beneficial effects of the present invention are as follows: The present invention provides a large-current connector with a lockable connection. This large-current connector with a lockable connection detachably locks the wire end terminals and board end terminals to the wire end module and board end module respectively through terminal lock catches. When the terminals are assembled incorrectly or need to be replaced, the wire end terminals and board end terminals can be pulled out through the terminal lock catches, which is convenient for replacing the terminals, can save production and use costs, and is convenient for the later maintenance of the connector.

[0022] In addition, this large-current connector with a lockable connection can achieve quick locking through the knob switch and the locking column, and can achieve quick separation of the wire end module and the board end module through the cam portion, which has the characteristic of convenient use. In actual application, the difficulty of connecting and disconnecting the connector can be greatly reduced, and the connection and separation speed can be improved. At the same time, since the connection force and the separation force directly act on the bodies of the wire end module and the board end module, it will not cause too many adverse effects on the connector terminals and the circuit board inside, and can avoid problems such as terminal loosening, falling off, and circuit board damage when the connector is separated, effectively protecting the connector and prolonging the service life of the connector.

[0023] In summary, this large-current connector with a lockable connection solves the technical defects existing in the prior art, such as non-removable replacement of terminals, high cost of replacing or maintaining the connector, difficulty in connection and opening, inconvenient use, easy damage, short service life, and potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the drawings and embodiments.

[0025] Figure 1 is the structural decomposition diagram of the present invention;

[0026] Figure 2 is the sectional view of the present invention;

[0027] Figure 3 is Figure 2 the partial enlarged view of A in

[0028] Figure 4 is another sectional view of the present invention;

[0029] Figure 5 is the structural diagram of the wire end module and the board end module of the present invention in the connected state;

[0030] Figure 6 is Figure 5 A partially enlarged view of B in

[0031] Figure 7 is a schematic structural view of the terminal latch in the present invention;

[0032] Figure 8 is a schematic structural view of the terminal latch from another angle in the present invention;

[0033] Figure 9 is a schematic exploded view of the knob switch, the fixing post cap and the wire end module in the present invention;

[0034] Figure 10 is a schematic structural view of the knob switch in the present invention;

[0035] Figure 11 is a schematic structural view of the knob switch from another angle in the present invention;

[0036] Figure 12 is a schematic structural view of the fixing post cap in the present invention. Detailed implementation manners

[0037] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present invention can be interactively combined on the premise of not conflicting with each other. Refer to Figure 1-12 .

[0038] A large-current connector with a lockable connection, comprising a wire-end module 1 and a board-end module 2 used in combination. The wire-end module 1 and the board-end module 2 are respectively connected with a wire-end terminal 51 and a board-end terminal 52. Latch mounting grooves 7 are provided on both the wire-end module 1 and the board-end module 2. A terminal latch 8 is installed in the latch mounting groove 7. The wire-end terminal 51 is detachably connected to the wire-end module 1 through the terminal latch 8 provided inside the wire-end module 1, and the board-end terminal 52 is detachably connected to the board-end module 2 through the terminal latch 8 provided inside the board-end module 2. Terminal mounting holes 6 are provided on both the wire-end module 1 and the board-end module 2. The latch mounting groove 7 includes a horizontal chute 71 and a vertical receiving groove 72. The vertical receiving groove 72 is vertically and communicatively connected to the horizontal chute 71 to form a T-shaped mounting groove. The side of the horizontal chute 71 communicates with the terminal mounting hole 6. The terminal latch 8 includes a latch slide plate 81 and a latch vertical plate 82 perpendicularly connected to the latch slide plate 81. The latch slide plate 81 is installed in the horizontal chute 71 and can slide within the horizontal chute 71. The latch vertical plate 82 is received in the vertical receiving groove 72. A resilient arm 83 extends inward from the inner side of the latch vertical plate 82, and the end of the resilient arm 83 abuts against the bottom of the vertical receiving groove 72. Latch catch platforms 84 are provided on both sides of the latch slide plate 81. Terminal locking concave rings 501 are provided on both the wire-end terminal 51 and the board-end terminal 52. The latch catch platforms 84 can extend from the side of the horizontal chute 71 into the terminal mounting hole 6 and latch onto the terminal locking concave rings 501 of the wire-end terminal 51 or the board-end terminal 52 to achieve the detachable connection between the wire-end terminal 51 and the wire-end module 1 or the detachable connection between the board-end terminal 52 and the board-end module 2.

[0039] Preferably, a first positioning boss 85 is provided at the bottom of the latch slide plate 81 of the terminal latch 8, a second positioning boss 86 is provided at the upper end of the latch vertical plate 82, a first positioning recess 73 and a second positioning recess 74 are provided in the latch mounting groove 7, the first positioning boss 85 and the second positioning boss 86 are correspondingly snapped into the first positioning recess 73 and the second positioning recess 74, the sizes of the first positioning recess 73 and the second positioning recess 74 are respectively larger than those of the first positioning boss 85 and the second positioning boss 86, the first positioning boss 85 can move within the first positioning recess 73, and the second positioning boss 86 can move within the second positioning recess 74; both the wire-end terminal 51 and the board-end terminal 52 include a first terminal boss 502 and a second terminal boss 503, the terminal locking recessed ring 501 is located between the first terminal boss 502 and the second terminal boss 503, a boss guiding inclined surface 87 facilitating the insertion of the wire-end terminal 51 or the board-end terminal 52 in place is provided on the side of the latch boss 84, and the side wall of the latch boss 84 is an arc-shaped side wall; in this embodiment, the terminal latch 8 is a plastic latch integrally injection-molded, the wire-end terminal 51 is fixedly connected with a wire-end wire 511, and the board-end terminal 52 is fixedly connected with a board-end wire 521.

[0040] When implementing the present invention, the terminal latch 8 is correspondingly inserted into the latch mounting groove 7 on the wire-end module 1 and the board-end module 2. After the wire-end terminal 51 and the board-end terminal 52 are inserted into the corresponding terminal mounting holes 6, the end of the wire-end terminal 51 or the board-end terminal 52 will first abut against the boss guiding inclined surface 87 on the terminal latch 8, and a certain pressure is applied to the terminal latch 8 by using the boss guiding inclined surface 87, forcing the resilience arm 83 on the terminal latch 8 to deform. The entire terminal latch 8 contracts inward as a whole under the pressure of the terminal. At this time, the wire-end terminal 51 or the board-end terminal 52 can continue to be inserted into the terminal mounting hole 6 until the terminal locking recessed ring 501 on the terminal is inserted into the corresponding position of the latch boss 84 on the terminal latch 8. At this time, under the elastic force of the resilience arm 83 of the terminal latch 8, the entire terminal latch 8 rebounds outward, and the latch boss 84 on the terminal latch 8 is snapped into the terminal locking recessed ring 501 on the wire-end terminal 51 or the board-end terminal 52, thereby locking the wire-end terminal 51 on the wire-end module 1 and locking the board-end terminal 52 on the board-end module 2, and the connection structure is stable.

[0041] When a terminal is plugged in incorrectly and needs to be replaced, or a terminal is damaged and needs to be substituted, press the terminal lock 8 forcefully. After the terminal lock 8 overcomes the elastic force of its resilient arm 83, it moves inward as a whole for a certain distance until the locking lug 84 on the terminal lock 8 leaves the terminal locking groove 501 on the wire-end terminal 51 or the board-end terminal 52. At this time, the terminal lock 8 releases the locking state of the wire-end terminal 51 and the board-end terminal 52, and the wire-end terminal 51 and the board-end terminal 52 can be pulled out from the wire-end module 1 and the board-end module 2 respectively, which is convenient for replacing and substituting the terminals, saving the use cost and maintenance cost, and having better economy.

[0042] Preferably, a rotary switch 3 is connected at the side of the wire-end module 1. A locking hook 31 is arranged on the rotary switch 3. A locking post 21 cooperating with the rotary switch 3 is arranged at the side of the board-end module 2. During the rotation of the rotary switch 3, its locking hook 31 can be hooked on the locking post 21 to lock the wire-end module 1 and the board-end module 2 to each other. A cam portion 32 is arranged on the rotary switch 3. During the rotation of the rotary switch 3, its cam portion 32 can press the locking post 21 and force the wire-end module 1 and the board-end module 2 to separate from each other by the mutual acting force between the cam portion 32 and the locking post 21.

[0043] During actual use, after the wire-end module 1 and the board-end module 2 are inserted in place, by rotating the rotary switch 3, the locking hook 31 on the rotary switch 3 is hooked on the locking post 21 on the board-end module 2. Then, by the mutual locking force between the locking hook 31 and the locking post 21, the wire-end module 1 and the board-end module 2 are tightly locked together to form a stable connection structure of the connector, which can improve the connection stability of the connector, avoid loosening under the action of external force, and have higher reliability. During actual implementation, the inner side surface of the locking hook 31 can be set to have a micro-inclined surface with gradually decreasing spacing. During the process of slowly rotating the rotary switch 3, the spacing between the wire-end module 1 and the board-end module 2 is reduced through the micro-inclined surface, so as to improve the connection stability of the connector. At the same time, the impedance can be reduced and the heat generation of the connector can be reduced.

[0044] When the connector needs to be opened, by rotating the rotary switch 3 in the reverse direction, the cam portion 32 on the rotary switch 3 will press the locking post 21, and the board-end module 2 and the wire-end module 1 are forced to separate from each other by the mutual acting force between the cam portion 32 and the locking post 21. During the rotation of the rotary switch 3, the distance between the position of the outer edge of the cam portion 32 in contact with the locking post 21 and the rotation center of the rotary switch 3 gradually increases, and thus the spacing between the board-end module 2 and the wire-end module 1 gradually becomes larger until the connection friction force between the wire-end module 1 and the board-end module 2 becomes smaller. At this time, the connector can be easily opened manually, realizing the quick opening of the connector, and the operation is convenient.

[0045] Preferably, the locking column 21 has a locking column plane 211, the locking column plane 211 and the end face of the board end module 2 are in the same plane, and the cam portion 32 can be pressed against the locking column plane 211.

[0046] Preferably, a fixing column 11 is provided on the side of the wire end module 1, and a fixing hole 30 for cooperating with the fixing column 11 is provided on the rotary switch 3. The rotary switch is installed on the fixing column 11 through its fixing hole 30 and can rotate around the fixing column 11;

[0047] A fixing column cap 4 is provided at the outer end of the fixing column 11, and the fixing column cap 4 is used to limit the rotary switch 3 to the rotating part of the fixing column 11;

[0048] The fixing column cap 4 includes a cap portion 41 and a connecting portion 42. A fixing hole sink 301 is provided on the peripheral edge of the outer opening of the fixing hole 30 of the rotary switch 3. The cap portion 41 of the fixing column cap 4 is installed at the fixing hole sink 301, and a cap connecting groove 111 is provided at the outer end of the fixing column 11. The connecting portion 42 of the fixing column cap 4 is fixedly connected in the cap connecting groove 111.

[0049] Preferably, the rotary switch 3 has a hook force arm 33, the locking hook 31 is located at the outer end of the hook force arm 33. During the transition and extension from the hook force arm 33 to the locking hook 31, the cross-section of the hook force arm 33 gradually decreases. The locking hook 31 forms a hook notch 34 on the rotary switch 3, and the size of the hook notch 34 matches the size of the locking column 21.

[0050] Preferably, the rotary switch 3 is further provided with a first rotary force arm 35 and a second rotary force arm 36. The first rotary force arm 35 forms a first rotary force application notch 371 on the rotary switch 3, the second rotary force arm 36 forms a second rotary force application notch 372 on the rotary switch 3, and a third rotary force application notch 373 is formed between the first rotary force arm 35 and the second rotary force arm 36;

[0051] Preferably, a rotary limit convex column 38 is provided inside the rotary switch 3, and a rotary limit concave position 12 for cooperating with the rotary limit convex column 38 is provided on the side of the wire end module 1. The rotary limit convex column 38 extends into the rotary limit concave position 12 and is limited by the side wall of the rotary limit concave position 12.

[0052] The above is a specific description of the preferred embodiment of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A large-current connector with a lockable connection, characterized in that: It includes a wire-end module (1) and a board-end module (2) for supporting use. The wire-end module (1) and the board-end module (2) are respectively connected with a wire-end terminal (51) and a board-end terminal (52). A buckle installation groove (7) is provided on both the wire-end module (1) and the board-end module (2). A terminal buckle (8) is installed in the buckle installation groove (7). The wire-end terminal (51) is detachably connected to the wire-end module (1) through the terminal buckle (8) provided inside the wire-end module (1), and the board-end terminal (52) is detachably connected to the board-end module (2) through the terminal buckle (8) provided inside the board-end module (2); Terminal installation holes (6) are provided on both the wire-end module (1) and the board-end module (2). The buckle installation groove (7) includes a horizontal sliding groove (71) and a vertical accommodation groove (72). The vertical accommodation groove (72) is vertically and communicatively connected to the horizontal sliding groove (71) to form a T-shaped installation groove. The side of the horizontal sliding groove (71) is communicatively connected to the terminal installation hole (6). The terminal buckle (8) includes a buckle sliding plate (81) and a buckle vertical plate (82) vertically connected to the buckle sliding plate (81). The buckle sliding plate (81) is installed in the horizontal sliding groove (71) and can slide within the horizontal sliding groove (71). The buckle vertical plate (82) is accommodated in the vertical accommodation groove (72). A resilient arm (83) extends inward from the inner side of the buckle vertical plate (82). The end of the resilient arm (83) abuts against the bottom of the vertical accommodation groove (72). Buckle clamping platforms (84) are provided on both sides of the buckle sliding plate (81). Terminal locking concave rings (501) are provided on both the wire-end terminal (51) and the board-end terminal (52). The buckle clamping platforms (84) can extend from the side of the horizontal sliding groove (71) into the terminal installation hole (6) and clamp onto the terminal locking concave rings (501) of the wire-end terminal (51) or the board-end terminal (52) to achieve the detachable connection between the wire-end terminal (51) and the wire-end module (1) or the detachable connection between the board-end terminal (52) and the board-end module (2); A knob switch (3) is joined at the side of the wire-end module (1). A locking hook (31) is provided on the knob switch (3). A locking post (21) for cooperating with the knob switch (3) is provided at the side of the board-end module (2). During the rotation of the knob switch (3), its locking hook (31) can hook onto the locking post (21) to lock the wire-end module (1) and the board-end module (2) to each other. A cam portion (32) is provided on the knob switch (3). During the rotation of the knob switch (3), its cam portion (32) can press the locking post (21) and rely on the interaction force between the cam portion (32) and the locking post (21) to force the wire-end module (1) and the board-end module (2) to separate from each other; The wire-end terminal (51) and the board-end terminal (52) both include a first terminal boss (502) and a second terminal boss (503). The terminal locking concave ring (501) is located between the first terminal boss (502) and the second terminal boss (503). The locking catch platform (84) is provided with a platform guiding inclined surface (87) on its side for facilitating the insertion of the wire-end terminal (51) or the board-end terminal (52) in place. The side wall of the locking catch platform (84) is an arc-shaped side wall. The terminal lock catch (8) is a plastic lock catch formed by integral injection molding. The wire-end terminal (51) is fixedly connected with a wire-end wire (511), and the board-end terminal (52) is fixedly connected with a board-end wire (521).

2. The large-current connector with lockable connection according to claim 1, characterized in that: The terminal lock catch (8) is provided with a first positioning boss (85) at the bottom of its lock catch slide plate (81), and a second positioning boss (86) at the upper end of its lock catch vertical plate (82). A first positioning recess (73) and a second positioning recess (74) are provided in the lock catch installation groove (7). The first positioning boss (85) and the second positioning boss (86) are correspondingly snapped into the first positioning recess (73) and the second positioning recess (74). The sizes of the first positioning recess (73) and the second positioning recess (74) are respectively larger than those of the first positioning boss (85) and the second positioning boss (86). The first positioning boss (85) can move within the first positioning recess (73), and the second positioning boss (86) can move within the second positioning recess (74).

3. The large current connector with a lockable connection according to claim 1, characterized in that: The locking column (21) has a locking column plane (211), and the locking column plane (211) is in the same plane as the end face of the board-end module (2). The cam portion (32) can press on the locking column plane (211).

4. The large current connector with a lockable connection according to claim 1, characterized in that: The wire-end module (1) is provided with a fixing column (11) on its side. The knob switch (3) is provided with a fixing hole (30) that mates with the fixing column (11). The knob switch is installed on the fixing column (11) through its fixing hole (30) and can rotate around the fixing column (11). The outer end of the fixing column (11) is provided with a fixing column cap (4), and the fixing column cap (4) is used to limit the knob switch (3) to the rotating part of the fixing column (11). The fixing column cap (4) includes a cap portion (41) and a connecting portion (42). The knob switch (3) is provided with a fixing hole counterbore (301) along the periphery of the outer opening of the fixing hole (30). The cap portion (41) of the fixing column cap (4) is installed at the fixing hole counterbore (301). A cap connecting groove (111) is formed at the outer end of the fixing column (11), and the connecting portion (42) of the fixing column cap (4) is fixedly connected in the cap connecting groove (111).

5. A large current connector with a lockable connection according to claim 1, characterized in that: The knob switch (3) is provided with a hook force arm (33). The locking hook (31) is located at the outer end of the hook force arm (33). During the process of transitioning and extending from the hook force arm (33) to the locking hook (31), the cross-section of the hook force arm (33) gradually shrinks. The locking hook (31) forms a hook notch (34) on the knob switch (3), and the size of the hook notch (34) matches the size of the locking column (21).

6. The large current connector with lockable connection according to claim 1, characterized in that: The knob switch (3) is further provided with a first knob force arm (35) and a second knob force arm (36). The first knob force arm (35) forms a first knob force application notch (371) on the knob switch (3), the second knob force arm (36) forms a second knob force application notch (372) on the knob switch (3), and a third knob force application notch (373) is formed between the first knob force arm (35) and the second knob force arm (36).

7. A high-current connector with a lockable connection according to claim 1, characterized in that: A rotation limit convex column (38) is arranged inside the knob switch (3), and a rotation limit concave position (12) for cooperating with the rotation limit convex column (38) is arranged on the side of the wire end module (1). The rotation limit convex column (38) extends into the rotation limit concave position (12) and is limited by the side wall of the rotation limit concave position (12).

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