Terminal additional locking device

Abstract

The invention discloses an additional terminal locking device, and relates to the field of terminal butt joint locking, the additional terminal locking device comprises a hanging assembly and a middle assembly, the hanging assembly comprises a first main body and a second main body, the second main body is used for connecting a terminal and is clamped on the periphery of the first main body, and the middle assembly is connected with the first main body; a terminal insertion area with a terminal hole and a locking area with a special-shaped locking hole are formed in the top surface of the first main body in parallel, a pre-locking groove and a final locking groove are formed in the inner wall of the top of the first main body, and the pre-locking groove and the final locking groove are formed in parallel in the first direction to form a pre-locking position and a final locking position; the middle assembly comprises a locking plate capable of sliding from a pre-locking position to a final locking position along the upper surface of the first main body, and the locking plate comprises a protruding hook body used for being matched with the special-shaped locking hole, a matching hole used for directly facing the terminal hole at the pre-locking position, and a lateral protruding table capable of sliding from the pre-locking groove to the final locking groove. Through cooperation of the hanging assembly and the middle assembly, all the components are highly integrated, the structure is compact, and the locking force is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of terminal mating locking, and more specifically to an additional terminal locking device. Background Technology

[0002] With the rapid iteration of automotive electronics technology, sealed connectors, as core electronic components, are facing increasingly stringent challenges in terms of both mechanical structure and performance indicators. Modern automotive design has placed higher-level integration requirements on sealed connectors, requiring not only breakthroughs in lightweight and miniaturization, but also the maintenance of stable electrical performance and long-term reliability under complex operating conditions (such as high-frequency vibration, extreme temperature and humidity).

[0003] Currently, there are two main technical approaches in the industry to ensure the reliability of male terminal connections in sealed connectors: one is to use a terminal locking reinforcement device, but its effect on improving terminal holding force is limited; the other is to use a terminal locking device, which can significantly improve holding force, but there are obvious technical bottlenecks. Additional locking devices require reserved installation space for the hook structure and unlocking mechanism, resulting in an increase in connector size, which runs counter to the industry's trend towards miniaturization. Summary of the Invention

[0004] This application provides an additional terminal locking device, which can solve the technical problems in the prior art where the reinforcement effect of the reinforcement means on the terminal side is extremely limited when reinforcing the terminal mating area, and the terminal locking device occupies a large space. This application provides an additional terminal locking device, including: A mounting assembly includes a first body and a second body for receiving a terminal and snapping onto the outer periphery of the first body. The top surface of the first body forms a terminal insertion area with a terminal hole and a locking area with an irregularly shaped locking hole. The inner wall of the top of the first body is provided with a pre-locking groove and a final locking groove. The pre-locking groove and the final locking groove are arranged side by side along a first direction to form a pre-lock position and a final locking position. The first direction is the direction from the terminal insertion area to the locking area. An intermediate component includes a locking plate that can slide along the upper surface of the first body from a pre-lock position to a final lock position. The locking plate includes a protruding hook for engaging with the irregular locking hole, a mating hole for facing the terminal hole in the pre-lock position, and a lateral protrusion that can slide from the pre-lock groove to the final lock groove.

[0005] In one embodiment, a step portion is formed on the top of the first body, the step portion including a low step surface and a high step surface, the terminal insertion area being located on the low step surface and the locking area being located on the high step surface.

[0006] In one embodiment, the locking plate is adapted to the shape of the stepped portion, and the length of the locking plate in the first direction is less than the length of the first body in the first direction, and the number of mating holes on the locking plate is equal to the number of terminal holes.

[0007] In one embodiment, the irregularly shaped locking hole extends axially through the first body. The irregularly shaped locking hole includes an upper channel area and a lower protruding area. The protruding area protrudes from the channel area along a second direction to form a suspension platform. The second direction is a direction that is horizontally perpendicular to the first direction.

[0008] In one embodiment, the protruding hook includes an extension extending longitudinally toward the direction of the first body and a hook portion located at the end of the extension for hooking the suspension table, and the hook portion is disposed toward the second direction.

[0009] In one embodiment, the top of the first body is provided with protruding edges protruding from the top surface of the stepped portion, the pre-locking groove and the final locking groove are provided inside the protruding edges, and the first body is provided with pre-locking grooves and final locking grooves on both sides along the second direction, the second direction being a direction that is horizontally perpendicular to the first direction.

[0010] In one embodiment, the pre-locking groove and the final locking groove have the same shape, and both the pre-locking groove and the final locking groove have inclined surfaces on their adjacent sides, and the lateral protrusion has a deformation amount.

[0011] In one embodiment, the second body is axially continuous, one end of the second body is used to connect to a terminal, and the other end of the second body is sleeved on the outside of the first body and snapped into the outer periphery of the first body.

[0012] In one embodiment, the outer periphery of the first body is provided with a locking member, the top of the locking member is fixedly connected to the outer periphery of the first body, the bottom of the locking member is provided with a downward protruding bar structure extending obliquely away from the first body, and the inner wall of the second body is provided with a locking groove for the downward protruding bar structure to be inserted at a relative position.

[0013] In one embodiment, the locking plate is further provided with an unlocking component, which includes a lever located on one side of the protruding hook and passing through the irregular locking hole to cooperate with an external prying lever for unlocking.

[0014] The beneficial effects of the technical solutions provided in this application include: 1. Improve locking reliability: By setting the hanging component to cooperate with the intermediate component, and using the sliding of the locking plate between the pre-lock position and the final lock position, the terminal is effectively prevented from accidentally coming out under vibration or external force, which significantly improves the connection reliability. When the final lock position is reached, the misalignment between the terminal hole and the mating hole can also form an additional lock for the terminal inserted into both. 2. High space utilization and compact structure: The terminal insertion area and locking area are arranged side by side on the top of the first main body, and the locking function is achieved by sliding the locking plate. This avoids setting up a complex locking mechanism on or around the terminal, which greatly saves installation space. It is especially suitable for high-density and miniaturized connector applications. At the same time, it can meet the requirements of 12V / 24V low voltage electrical systems, while being fully compatible with 48V medium voltage electrical systems and rigid cabling layouts. 3. Clear guidance and simple operation: The pre-locking groove and the final locking groove are arranged side by side in a specific direction, providing clear guidance for the movement of the locking plate. This ensures that the locking plate can slide accurately and smoothly from the pre-locking position to the final locking position, simplifying the assembly and locking operation process. In addition, the locking plate, through the cooperation of the side protrusion with the pre-locking groove and the final locking groove, ensures its stability during the sliding process, avoids deflection or jamming, and ensures the accurate execution of the locking action.

[0015] 4. High degree of functional integration: It integrates multiple functions such as terminal access, pre-locking, and final locking into one unit, realizing a complex and reliable locking mechanism within a limited space. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A split diagram of an additional terminal locking device provided in an embodiment of this application; Figure 2 A top view of the first main body in an additional terminal locking device provided in an embodiment of this application; Figure 3 This is a schematic diagram of the locking plate structure in an additional terminal locking device provided in an embodiment of this application; Figure 4 A detailed view of the first main body structure in an additional terminal locking device provided in an embodiment of this application; Figure 5 A cross-sectional view of the first main body and locking plate in an assembly state of an additional terminal locking device provided in an embodiment of this application; Figure 6A cross-sectional view of a terminal additional locking device after assembly, provided for an embodiment of this application; Figure 7 This is a schematic diagram illustrating the use of a toggle lever in an additional terminal locking device provided in an embodiment of this application.

[0018] In the diagram: 1. First main body; 101. Stepped portion; 102. Protruding edge; 103. Engaging component; 2. Terminal insertion area; 201. Terminal hole; 3. Locking area; 301. Irregular locking hole; 3011. Channel area; 3012. Protruding area; 3013. Suspension platform; 4. Pre-locking groove; 5. Final locking groove; 6. Locking plate; 7. Protruding hook body; 701. Extension portion; 702. Hook portion; 8. Mating hole; 9. Side protruding platform; 10. Second main body; 1001. Engaging groove; 11. Actuating rod; 12. Prying lever. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0020] This application provides an additional terminal locking device, which can solve the technical problem in the prior art that when reinforcing the terminal mating area, the strengthening effect of the strengthening means on the terminal side is extremely limited, and the terminal locking device occupies a large space.

[0021] Figure 1 A split diagram of a terminal additional locking device provided in an embodiment of this application is shown below. Figure 1 As shown, the additional terminal locking device in this application includes a hook assembly and an intermediate assembly. The hook assembly includes a first body 1 and a second body 10. The second body 10 is sleeved on the outer periphery of the first body 1 and snaps into the first body 1. The first body 1 is used to fix the inserted component, or it can be understood as fixing it to the board end connector. The second body 10 is used to access the terminal, or it can be understood as fixing it to the wire end connector. The accessed terminal protrudes from the second body 10 so that after the first body 1 and the second body 10 are fitted and snapped together, the terminal enters the first body 1, which facilitates the subsequent formation of an electrical path with the board end connector.

[0022] Figure 2 A top view of the first main body 1 in a terminal additional locking device provided in an embodiment of this application, as shown below. Figure 2As shown, the top surface of the first main body 1 forms a terminal insertion area 2 with a terminal hole 201 and a locking area 3 with an irregularly shaped locking hole 301. To facilitate the passage of the terminal and to limit its movement, the first main body 1 is a hollow structure with a sealed top and an open bottom. The terminal insertion area 2 and the locking area 3 are disposed on and penetrate the sealed top surface. The terminal insertion area 2 and the locking area 3 are arranged side by side. For ease of description, they are referred to as... Figure 2 Taking a perspective example, the first main body 1 is a cuboid structure with two long sides and two short sides. The terminal insertion area 2 and the locking area 3 are arranged side by side along the long side of the first main body 1.

[0023] Further details can be found here. Figure 2 The top inner wall of the first body 1 is provided with a pre-locking groove 4 and a final locking groove 5. The pre-locking groove 4 and the final locking groove 5 are arranged side by side along a first direction to form a pre-locking position and a final locking position. The first direction is the direction from the terminal insertion area 2 to the locking area 3. The pre-locking groove 4 and the final locking groove 5 are connected. When the intermediate component is located in the pre-locking groove 4, it is in the pre-locking position. When the intermediate component is located in the final locking groove 5, it is in the final locking position. At this time, it indicates that the locking is completed. The first direction here is the length direction of the first body 1 mentioned above. The "first direction" mentioned below is equivalent to "the length direction / long side direction of the first body 1".

[0024] Furthermore, Figure 3 This is a schematic diagram of the locking plate 6 in an additional terminal locking device provided in an embodiment of this application, as shown below. Figure 3 As shown, the intermediate component includes a locking plate 6 that can slide along the upper surface of the first body 1. The locking plate 6 is disposed on the sealing surface at the top of the first body 1. In a top view, the locking plate 6 is a rectangular plate with two long sides and two short sides. The length of the long side of the locking plate 6 is less than the length of the long side of the first body 1 so that the locking plate 6 can slide along the top of the first body 1 from the pre-lock position to the final lock position. However, the width of the locking plate 6 is adapted to the width of the first body 1 so that the locking plate 6 is just engaged with the upper surface of the first body 1.

[0025] The locking plate 6 includes a protruding hook 7, a mating hole 8, and a side protrusion 9. The protruding hook 7 is located at the bottom of the locking plate 6 and, in the assembled state, is embedded in the irregularly shaped locking hole 301. The shape of the protruding hook 7 matches the irregularly shaped locking hole 301 so that the protruding hook 7 hooks onto the inner wall of the irregularly shaped locking hole 301. The mating hole 8 penetrates through the locking plate 6, and the number of mating holes 8 on the locking plate 6 is equal to the number of terminal holes 201. In the pre-locked position, each locking plate 6 is directly opposite a terminal hole 201. Based on the above description, the terminal additional locking device in this application has a pre-locked position and a final locked position, which can also be understood as having a pre-locked state and a final locked state. In the pre-locked state... In the current state, the mating hole 8 and the terminal hole 201 form an axially penetrating terminal channel with flush inner walls. When the locking plate 6 slides along the upper surface of the first body 1 to the final locking position, the mating hole 8 is synchronously displaced by a certain angle relative to the terminal hole 201 and protrudes from the inner wall of the terminal hole 201 along the first direction. At this time, the terminal channel is stepped, which can form an additional lock for the inserted terminal. It should be noted that, in order to achieve this purpose, the diameter of the mating hole 8 and the terminal hole 201 needs to be slightly larger than the outer diameter of the terminal to facilitate the reservation of misalignment space. The side protrusion 9 is set on the long side of the locking plate 6 and protrudes from the locking plate 6. It also slides from the pre-locking groove 4 to the final locking groove 5 along with the locking plate 6.

[0026] Furthermore, Figure 4 A detailed structural diagram of the first main body 1 in a terminal additional locking device provided in this application embodiment is shown below. Figure 4 As shown, the top of the first main body 1 forms a stepped portion 101, which includes a lower step surface and a higher step surface. The terminal insertion area 2 is located on the lower step surface, and the locking area 3 is located on the higher step surface. The stepped portion 101 facilitates assembly and can distinguish the terminal insertion area 2 and the locking area 3 based on their different heights. It should be noted that the terminal insertion area 2 is mostly located on the lower step surface, but when there are too many terminal wire harnesses, an additional terminal hole 201 can be opened in the blank space of the locking area 3, and a mating hole 8 can be added to the locking plate 6 at the same time. This application does not limit the terminal hole 201 to be set in the locking area 3.

[0027] Further details can be found here. Figure 3 The locking plate 6 is adapted to the shape of the step portion 101 and also has a stepped structure. Both the locking plate 6 and the top surface of the first main body 1 have two horizontal surfaces and a longitudinal surface located in the middle. In the pre-locked state, the longitudinal surface of the locking plate 6 is spaced a certain distance from the longitudinal surface of the first main body 1, and the distance between the two longitudinal surfaces is equal to the distance between the center point of the pre-locking groove 4 and the center point of the final locking groove 5, so that in the final locking state, the longitudinal surface of the locking plate 6 fits against the longitudinal surface of the first main body 1, and the side protrusion 9 slides from the pre-locking groove 4 into the final locking groove 5.

[0028] Furthermore, Figure 5This application provides a cross-sectional view of the first body 1 and locking plate 6 in an assembled state of an additional terminal locking device. More precisely, it is a cross-sectional view of the first body 1 along its wide side in the assembled state of the first body 1 and locking plate 6. Figure 5 As shown, the irregularly shaped locking hole 301 includes an upper channel area 3011 and a lower protruding area 3012. The diameter of the protruding area 3012 is larger than the diameter of the channel area 3011, so that the protruding area 3012 protrudes from the channel area 3011 along a second direction to form a suspension platform 3013. The second direction is a direction that is horizontally perpendicular to the first direction, that is... Figure 1 From this perspective, in the width direction of the first main body 1, the suspension platform 3013 is also a stepped structure, which makes it easier to leave a suspension point for the protruding hook body 7.

[0029] Further details can be found here. Figure 5 The protruding hook 7 includes an extension 701 extending longitudinally toward the direction of the first body 1 and a hook portion 702 located at the end of the extension 701. The length of the extension 701 is equal to the height of the channel area 3011, so that after the first body 1 is assembled with the locking plate 6, the hook portion 702 faces the suspension table 3013. The suspension table 3013 faces the second direction, so the hook portion 702 also faces the second direction. In the pre-locked state, the hook portion 702 is already hooked onto the suspension table 3013. Since the locking plate 6 slides along the first direction, when the locking plate 6 slides, the hook portion 702 only moves laterally along the first direction on the suspension table 3013 and will not disengage from the suspension table 3013. The two remain locked together.

[0030] Further details can be found here. Figure 4 The top of the first main body 1 is provided with protruding edges 102 protruding from the top surface of the step portion 101. The height of the protruding edges 102 is greater than the thickness of the locking plate 6 so that the locking plate 6 is completely embedded in the protruding edges 102. The first main body 1 is provided with pre-locking grooves 4 and final locking grooves 5 on both sides along the second direction. That is, the first main body 1 is provided with pre-locking grooves 4 and final locking grooves 5 on both sides of the long side to ensure uniform locking between the first main body 1 and the locking plate 6 on both sides.

[0031] Furthermore, the pre-locking groove 4 and the final locking groove 5 have the same shape, and both sides of the pre-locking groove 4 and the final locking groove 5 that are close to each other are provided with inclined surfaces. The inclined surfaces can reduce the frictional force when the side protrusion 9 moves between the pre-locking groove 4 and the final locking groove 5. In one possible embodiment, the pre-locking groove 4 and the final locking groove 5 are both configured as triangular, with their sharp ends away from the locking plate 6 and their ends facing the locking plate 6 open. In order to further facilitate the side protrusion 9 to slide from the pre-locking groove 4 to the final locking groove 5, in one possible embodiment, the side protrusion 9 is made of a material with a certain amount of deformation, such as hard rubber, so as to ensure that it can deform and switch the locking groove while also having a certain supporting force to ensure the locking force.

[0032] In another possible implementation, the side protrusion 9 is not limited to any material, but its end face away from the pre-locking groove 4 and the final locking groove 5 is provided with an elastic reset member. The elastic reset member is disposed in the locking plate 6. When the side protrusion 9 is located in the pre-locking groove 4, the elastic reset member is in an extended state, keeping the side protrusion 9 protruding and located in the pre-locking groove 4. When the locking plate 6 slides, the side protrusion 9 retracts, and the elastic reset member is compressed. When the side protrusion 9 moves to the final locking groove 5, the elastic potential energy of the elastic reset member automatically pushes out the side protrusion 9, completing the locking.

[0033] Further details can be found here. Figure 1 The second body 10 is axially through. It should be noted that the second body 10 itself is an axially through square structure, but one end of it needs to be connected to the terminal end, that is, fixedly connected to the above-mentioned wire end connector. The connection end is blocked by the wire end connector, and the other end is sleeved on the outside of the first body 1 and is also snapped into the first body 1.

[0034] Further details can be found here. Figure 1 The first main body 1 has a locking member 103 on its outer periphery. The top of the locking member 103 is fixedly connected to the outer periphery of the first main body 1. The bottom of the locking member 103 has a downward protruding bar structure. The bottom of the locking member 103 has a downward protruding bar structure that extends obliquely in a direction away from the first main body 1.

[0035] Figure 6 This application provides a cross-sectional view of a terminal additional locking device after assembly, specifically a cross-sectional view of the long side of the first main body 1 after the terminal additional locking device is assembled, as shown below. Figure 6 As shown, the inner wall of the second body 10 is provided with a locking groove 1001 for embedding the downward-pointing barb structure. The downward-pointing barb structure is inclined downward and protrudes from the outer periphery of the first body 1, indicating that it has a certain amount of springback. The upper surface of the locking groove 1001 is set with an upward angle to facilitate the embedding of the downward-pointing barb structure. The lower surface of the locking groove 1001 is also inclined upward to adapt to the downward-pointing cross section of the lower surface of the downward-pointing barb structure.

[0036] In one possible implementation, the engaging member 103 and the downward-pointing barb structure are arranged in four groups. The four outer walls of the first body 1 are provided with a downward-pointing barb structure, and the four inner walls of the second body 10 are provided with an engaging groove 1001.

[0037] In summary, the terminal additional locking device of this application includes three main parts: a first body 1, a second body 10, and a locking plate 6. The first body 1 and the second body 10 are stably engaged and fitted together by the engaging member 103. The locking means between the first body 1 and the locking plate 6 include the engagement of the irregular locking hole 301 with the protruding hook 7 and the engagement of the side protrusion 9 with the pre-locking groove 4 / final locking groove 5. At the same time, when the side protrusion 9 slides to the final locking groove 5, the locking plate 6 and the first body 1 form a stepped locking structure for the terminal on the second body 10. The three parts complement each other and lock each other, forming a whole.

[0038] Further details can be found here. Figure 3 The locking plate 6 is also provided with an unlocking component for use with an external prying lever 12. The unlocking component is located on one side of the protruding hook 7. There may be multiple protruding hooks 7, but only one unlocking component is required. One unlocking component is provided on one side of one of the protruding hooks 7 and passes through the irregularly shaped locking hole 301 at the opposite position. Of course, one unlocking component can also be provided on one side of each protruding hook 7. This application does not impose any restrictions. The unlocking component is a columnar lever 11. Figure 7 This is a schematic diagram illustrating the usage of the toggle lever 11 in an additional terminal locking device provided in this application embodiment. Figure 7 As shown, since the irregular locking hole 301 penetrates the first column, one end of the prying lever 12 can be directly inserted into the gap between the lever 11 and the irregular locking hole 301. Then, by applying force in the unlocking direction, the locking plate 6 can be pried from the final lock position to the pre-lock position. Prying the lever 12 and prying to unlock are common methods in the field, and will not be described in detail here.

[0039] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0040] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A terminal additional locking device, characterized in that, include: The mounting assembly includes a first body (1) and a second body (10) for receiving terminals and snapping onto the outer periphery of the first body (1). The top surface of the first body (1) forms a terminal insertion area (2) with terminal holes (201) and a locking area (3) with irregular locking holes (301). The inner wall of the top of the first body (1) is provided with a pre-locking groove (4) and a final locking groove (5). The pre-locking groove (4) and the final locking groove (5) are arranged side by side along a first direction to form a pre-locking position and a final locking position. The first direction is from the terminal insertion area (2) to the locking area (3). The intermediate component includes a locking plate (6) that can slide along the upper surface of the first body (1) from a pre-lock position to a final lock position. The locking plate (6) includes a protruding hook (7) for engaging with the irregular locking hole (301), a mating hole (8) for facing the terminal hole (201) in the pre-lock position, and a lateral protrusion (9) that can slide from the pre-lock groove (4) to the final lock groove (5).

2. The terminal additional locking device as described in claim 1, characterized in that: The first body (1) has a step portion (101) formed on the top. The step portion (101) includes a step low surface and a step high surface. The terminal insertion area (2) is located on the step low surface and the locking area (3) is located on the step high surface.

3. The terminal additional locking device as described in claim 2, characterized in that: The locking plate (6) is adapted to the shape of the step portion (101), and the length of the locking plate (6) in the first direction is less than the length of the first body (1) in the first direction. The number of mating holes (8) on the locking plate (6) is equal to the number of terminal holes (201).

4. The terminal additional locking device as described in claim 1, characterized in that: The irregular locking hole (301) axially penetrates the first body (1). The irregular locking hole (301) includes a channel area (3011) located above and a protruding area (3012) located below. The protruding area (3012) protrudes from the channel area (3011) along a second direction to form a suspension platform (3013). The second direction is a direction that is horizontally perpendicular to the first direction.

5. The terminal additional locking device as described in claim 4, characterized in that: The protruding hook (7) includes an extension (701) extending longitudinally toward the first body (1) and a hook (702) located at the end of the extension (701) for hooking the suspension platform (3013), and the hook (702) is arranged toward the second direction.

6. The terminal additional locking device as described in claim 2, characterized in that: The first main body (1) has protruding edges (102) protruding from the top surface of the step portion (101) around its top periphery. The pre-locking groove (4) and the final locking groove (5) are located inside the protruding edge (102). The first main body (1) has pre-locking grooves (4) and final locking grooves (5) on both sides along the second direction. The second direction is a direction that is horizontally perpendicular to the first direction.

7. The terminal additional locking device as described in claim 6, characterized in that: The pre-locking groove (4) and the final locking groove (5) have the same shape, and the side of the pre-locking groove (4) and the final locking groove (5) that are close to each other are provided with inclined surfaces, and the side protrusion (9) has a deformation amount.

8. The terminal additional locking device as described in claim 1, characterized in that: The second body (10) is axially through, one end of the second body (10) is used to connect to the terminal, and the other end of the second body (10) is sleeved on the outside of the first body (1) and snapped into the outer periphery of the first body (1).

9. A terminal additional locking device as described in claim 8, characterized in that: The first body (1) has a locking member (103) on its outer periphery. The top of the locking member (103) is fixedly connected to the outer periphery of the first body (1). The bottom of the locking member (103) has a downward protruding bar structure that extends obliquely away from the first body (1). The inner wall of the second body (10) has a locking groove (1001) for the insertion of the downward protruding bar structure at a relative position.

10. A terminal additional locking device as described in claim 1, characterized in that: The locking plate (6) is also provided with an unlocking component, which includes a lever (11) located on one side of the protruding hook body (7) and passing through the irregular locking hole (301) to cooperate with the external prying lever (12) for unlocking.

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