High voltage terminal bodies, cable assemblies and connectors

Abstract

To provide a terminal body for high-voltage connection, which can electrically connect a core of a wire and also can improve the conductivity and current-carrying performance of a wiring portion.SOLUTION: A terminal body 100 includes: an insertion portion 10 which includes a first insertion plate 11 and a second insertion plate 12; and a wiring portion 20 which includes a first wiring plate 21, a second wiring plate 22 and an alignment structure. A gap is formed between the first insertion plate and the second insertion plate, and the first insertion plate and the second insertion plate are enclosed together to form an insertion slot 101 configured for inserting a mating terminal. The first wiring plate and the second wiring plate are electrically connected with the first insertion plate and the second insertion plate, respectively. The first inner side surface of the first wiring plate is arranged facing the second inner side surface of the second wiring plate. The alignment structure includes a through hole 211 and a boss 221. The through hole is provided on the first wiring plate, and the boss is provided on the second inner side surface of the second wiring plate. The boss is accommodated in the through hole, and is electrically connected to a core of a wire together with the first outer side surface of the first wiring plate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of connection structures, and more particularly to terminal bodies, cable assemblies and connectors for high voltage connections. [Background technology]

[0002] The terminal body of an existing connector typically includes an insertion section and a wiring section electrically connected to the insertion section. The wiring section and the electrical wire are connected using ultrasonic welding. During use, an external terminal is inserted into the insertion section to electrically connect it. The mating terminal is then electrically connected to the electrical wire via the connector. The insertion section includes a first contact plate and a second contact plate. The external terminal can be inserted into the gap between the first and second contact plates and is directly electrically connected to the first and second contact plates via the shortest conductive path. A single-layer insertion plate can only be directly electrically connected to either the first or second insertion plate. The unconnected portion has a long conductive path, a small conductive area, and poor electrical conductivity. Furthermore, when the wiring section includes a first wiring plate connected to the first insertion plate and a second wiring plate connected to the second insertion plate, and the first wiring plate is attached to the second wiring plate, ultrasonic welding of the first wiring plate or the second wiring plate with the core of the electric wire may cause relative movement between the first connecting plate and the second connecting plate, which may disrupt the electrical connection between the first wiring plate and the second wiring plate. Summary of the Invention [Problem to be solved by the invention]

[0003] The object of the present invention is to provide a terminal body, cable assembly and connector for high voltage connection to solve the technical problems of poor structural stability and electrical conductivity of the wiring arrangement in the prior art. [Means for solving the problem]

[0004] The present invention provides an insert comprising a first insert plate and a second insert plate; and A wiring section including a first wiring plate, a second wiring plate, and an alignment structure. Including, a gap is formed between the first and second insert plates, and the first and second insert plates together surround an insertion slot configured to receive a mating terminal; This is achieved by providing a terminal body for high-voltage connection, wherein the first wiring plate is electrically connected to the first insertion plate, the second wiring plate is electrically connected to the second insertion plate, the first wiring plate has a first outer surface and a first inner surface, the second wiring plate has a second outer surface and a second inner surface, the first inner surface is disposed opposite the second inner surface, and the alignment structure has a through hole and a boss, the through hole is provided in the first wiring plate and the boss is provided on the second inner surface, the boss is received in the through hole and is configured to be electrically connected to the core of an electric wire together with the first outer surface.

[0005] In an embodiment of the first aspect, the upper surface of the boss and the first outer surface form a connection surface configured to connect the core of the electric wire, and the connection surface is flat.

[0006] In an embodiment of the first aspect, the boss is a boss formed by stamping the second wiring plate.

[0007] In an embodiment of the first aspect, the boss and the hole wall of the through hole are a clearance fit.

[0008] In an embodiment of the first aspect, the boss and the hole wall of the through hole are a transition fit.

[0009] In an embodiment of the first aspect, the first interior surface is fully attached and electrically connected to the second interior surface.

[0010] In an embodiment of the first aspect, the peripheral edge of the first wiring plate and the peripheral edge of the second wiring plate are aligned.

[0011] In an embodiment of the first aspect, the wiring portion has a flat (planar) shape.

[0012] In an embodiment of the first aspect, the thickness of the wiring portion is greater than the thickness of the first connecting plate or the second connecting plate.

[0013] In an embodiment of the first aspect, the wiring portion further comprises a connecting bridge connecting the first connecting plate and the second connecting plate, the connecting bridge is plastically deformable and the insertion of the first wiring plate and the second wiring plate can be achieved by bending the connecting bridge, and the terminal body is an integral piece (or is one-piece).

[0014] In an embodiment of the first aspect, the first insert plate and the second insert plate are arranged opposite each other, and the first insert plate and the first wiring plate are connected to each other via a bent portion, or the second insert plate and the second wiring plate are connected to each other via a bent portion.

[0015] In an embodiment of the first aspect, the wiring portion further includes a positioning structure, and the positioning structure includes a positioning groove and a positioning pillar, one of the positioning groove and the positioning pillar being disposed on the first inner surface, and the other of the positioning groove and the positioning pillar being disposed on the second inner surface, and the positioning pillar being fitted and inserted into the positioning groove to form an interference fit.

[0016] In an embodiment of the first aspect, a cross-sectional area of ​​the positioning groove is smaller than a cross-sectional area of ​​the through hole.

[0017] In an embodiment of the first aspect, the positioning pillar is a positioning pillar formed by cold riveting.

[0018] In a second aspect, the present invention provides a cable assembly with a high-voltage terminal body, further comprising an electric wire and the above-mentioned terminal body, wherein the core of the electric wire and the wiring portion of the terminal body are electrically connected.

[0019] In an embodiment of the second aspect, the core of the electric wire is welded to the wiring portion of the terminal body.

[0020] In an embodiment of the second aspect, the core of the electric wire is in contact with the first outer surface of the wiring portion.

[0021] In a third aspect, the present application further provides a connector comprising a connection housing and the above-mentioned high-voltage connection terminal body, wherein the connection housing has a terminal cavity configured to receive the terminal body, and the terminal cavity is configured to fixedly mount the terminal body. [Effects of the Invention]

[0022] Compared with the prior art, the technical advantage of the present invention is that the first wiring plate of the high-voltage terminal body is electrically connected to the first insertion plate, and the second wiring plate is electrically connected to the second insertion plate. When the mating terminal is inserted into the insertion slot formed by the first insertion plate and the second insertion plate, the mating terminal is electrically connected to the insertion portion and to the core of the electric wire via the wiring portion. The wiring portion is also provided with an alignment structure. The alignment structure includes a through hole provided on the first inner surface and a boss provided on the second inner surface. The boss is received in the through hole and is used to electrically connect with the core of the electric wire together with the first outer circumferential surface. When the core of the electric wire is connected to the wiring portion, the electric wire is electrically connected to the first wiring plate via the first outer circumferential surface and also to the second wiring plate via the boss. Since the core of the electric wire can be electrically connected to both the first wiring plate and the second wiring plate simultaneously, the conductivity and current flow of the wiring portion are improved, and the dual arrangement of the first wiring plate and the second wiring plate improves the structural stability of the terminal body. [Brief explanation of the drawings]

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer and easier to understand, the present application will be described in more detail below with reference to the accompanying figures and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of illustrating the present invention and are not intended to limit the present invention. [Figure 1] 1 is a three-dimensional structural view of a terminal body provided by an embodiment of the present invention, viewed from an angle. [Figure 2] 2 is a three-dimensional structural view of the terminal body of FIG. 1 as seen from another viewing angle. [Figure 3] FIG. 2 is a cross-sectional view of the terminal body of FIG. [Figure 4] 1 is a diagram showing a three-dimensional structure of a connection terminal provided in one embodiment of the present invention. [Figure 5] FIG. 5 is a vertical cross-sectional view of the connection terminal of FIG. [Figure 6]FIG. 5 is a cross-sectional view of the connection terminal of FIG. 4. [Figure 7] FIG. 5 is an exploded perspective view of the connection terminal of FIG. 4. [Figure 8] 5 is a three-dimensional structural view of a limiting member of the connection terminal of FIG. 4. [Figure 9] FIG. 10 is a three-dimensional structural view of a connection terminal provided according to another embodiment of the present invention. [Figure 10] FIG. 10 is an exploded view of the connection terminal of FIG. [Figure 11] 10 is a three-dimensional structural view of the limiting member of the connection terminal of FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0024]

[0023] Hereinafter, embodiments of the present invention will be described in detail, and examples of the embodiments are illustrated in the accompanying drawings, in which constant or similar reference numerals always represent the same or similar components or components having the same or similar functionality. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be considered as any limitation of the present invention.

[0025] In this specification, the directions and positions indicated by terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "internal," "external," and the like are based on the directions and positions shown in the accompanying drawings, and are used only to explain the present invention, and should be understood as being used for convenience of explanation, rather than indicating or implying that the devices or elements shown must have a particular orientation, or be configured or operate in a particular orientation.

[0026] Furthermore, the terms "the first" and "the second" are for convenience of description and should not be construed as indicating or suggesting relative importance or implying the number of technical features shown. A feature qualified with "first" or "second" may expressly or implicitly indicate that one or more features are included. As used herein, "multiple / a plurality of" means two or more than two, unless otherwise expressly and specifically specified.

[0027] In this specification, unless otherwise expressly specified and limited, terms such as "mount," "connect with each other," "connect," and "fix" should be interpreted generally. For example, "connect" can be interpreted as being fixedly connected, detachably connected, or integrally connected, "connect" can be interpreted as being mechanically connected or electrically connected, and "connect" can also be interpreted as being directly connected or indirectly connected via an intermediary, or as being an internal communication between two components, or as being an interactive relationship between two components. For those skilled in the art, the specific meanings of the above terms in this specification can be interpreted according to specific conditions.

[0028] To make the objectives, technical solutions and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings and embodiments.

[0029] The present application provides a terminal body 100 that can be inserted into a mating terminal to achieve electrical connection with the mating terminal.

[0030] 1 and 2, the terminal body 100 may be a high-voltage connection terminal body 100, and the terminal body 100 includes an insertion portion 10 and a wiring portion 20.

[0031] The insert 10 includes a first insert plate 11 and a second insert plate 12. A gap is formed between the first insert plate 11 and the second insert plate 12, and the first insert plate 11 and the second insert plate 12 surround and together form an insert slot 101 into which a mating terminal is inserted. The insert slot 101 is a cavity with an opening, and the mating terminal extends from the opening into the cavity and interferes with the insert 10 to establish an electrical connection with the insert 10. In this embodiment, the first insert plate 11 and the second insert plate 12 are parallel and spaced apart. When the mating terminal is inserted into the insert slot 101, the mating terminal contacts both the first insert plate 11 and the second insert plate 12 and is electrically connected to both the first insert plate 11 and the second insert plate 12. The first insert plate 11 and the second insert plate 12 are the same size and are arranged opposite each other.

[0032] The wiring portion 20 has a planar shape and a connection surface to be connected to the core of the electric wire. After the core of the electric wire is connected to the connection surface, the wiring portion 20 is electrically connected to the electric wire, and the insertion portion 10 is electrically connected to the electric wire via the wiring portion 20.

[0033] 1 and 2, specifically, the wiring section 20 includes a first wiring plate 21, a second wiring plate 22, and a connecting bridge 23, and the connecting bridge 23 connects the first wiring plate 21 and the second wiring plate 22, and the first wiring plate 21 and the second wiring plate 22 are electrically connected via the connecting bridge 23. The first wiring plate 21 is electrically connected to the first insert plate 11, and the second wiring plate 22 is electrically connected to the second insert plate 12.

[0034] Optionally, the first wiring plate 21 and the first insert plate 11 can be mechanically and electrically connected via a bent portion 111, and the first wiring plate 21 and the first insert plate 11 can be arranged in a vertical staggered manner, with the first insert plate 11 having a horizontal position higher than the first wiring plate 21, and the bent portion 111 extending in the vertical direction. Also, the second wiring plate 22 and the second insert plate 12 can be located on the same horizontal plane and directly connected, and the second wiring plate 22 and the second insert plate 12 can be electrically connected.

[0035] In other embodiments, the second wiring plate 22 and the second insert plate 12 can be mechanically and electrically connected via the bent portion 111. The second wiring plate 22 and the second insert plate 12 are arranged in a staggered pattern in the vertical direction, the second insert plate 12 has a horizontal position higher than the second wiring plate 22, and the bent portion 111 extends in the vertical direction. Note that the first wiring plate 21 and the first insert plate 11 can be located on the same horizontal plane and directly connected, and the first wiring plate 21 and the first insert plate 11 are electrically connected.

[0036] Among them, the bent portion 111 may be provided only between the first wiring plate 21 and the first insert plate 11. Alternatively, the bent portion 111 may be provided only between the second wiring plate 22 and the second insert plate 12. Alternatively, the bent portion 111 may be provided between the first wiring plate 21 and the first insert plate 11 and between the second wiring plate 22 and the second insert plate 12. Note that in this embodiment, referring to FIG. 1 , the bent portion 111 may be provided only between the first wiring plate 21 and the first insert plate 11.

[0037] In one embodiment, the thickness of the wiring portion 20 is greater than the thickness of the first wiring plate 21 or the second wiring plate 22. That is, the first wiring plate 21 and the second wiring plate 22 are not coplanar. Optionally, they may be fitted to each other via a step structure. In this embodiment, the first wiring plate 21 has a first outer surface facing upward and a first inner surface facing downward, and the second wiring plate 22 has a second outer surface facing downward and a second inner surface facing upward, with the first inner surface facing the second inner surface. Here, the periphery of the first wiring plate 21 and the periphery of the second wiring plate 22 are aligned, that is, the first wiring plate 21 and the second wiring plate 22 are the same size and are stacked one on top of the other. The core of the electric wire can be welded to the first wiring plate 21, or to the second wiring plate 22, or to both the first wiring plate 21 and the second wiring plate 22 by ultrasonic welding.

[0038] 1 and 3 , in one embodiment, the first wiring plate 21 has a through-hole 211 penetrating the first outer surface and the first inner surface. A boss 221 is provided on the second inner surface. The boss 221 penetrates the through-hole 211 and, together with the first outer surface, is configured to connect with the core of an electric wire. That is, the core of the electric wire is connected to the first wiring plate 21 via the first outer surface and to the second wiring plate 22 via the boss 221. This allows the core of the electric wire to be directly and electrically connected to both the first wiring plate 21 and the second wiring plate 22 simultaneously. This improves electrical conductivity and current flow, and the dual arrangement of the first wiring plate 21 and the second wiring plate 22 also improves structural stability. When a mating terminal is inserted into the insertion slot 101 formed by the first insertion plate 11 and the second insertion plate 12, the mating terminal is electrically connected to the insertion portion 10 and then to the core of the electric wire via the wiring portion 20. Among these, the boss 221 can be formed by stamping through the second wiring plate 22, so that the boss 221 can be formed quickly and materials and costs can be saved.

[0039] Preferably, the upper surface of boss 221 and the first outer surface are integrated to form a connection surface for connecting the core of the electric wire, and since the connection surface is flat, the core of the electric wire can be connected to boss 221 and the first outer surface on the same plane, thereby improving structural stability and reducing the occurrence of poor contact.

[0040] In the above embodiment, the first inner surface and the second inner surface may be spaced apart. In this case, the second wiring plate 22 is simply electrically connected to the core of the electric wire via the boss 221.

[0041] In this embodiment, at least a portion of the first wiring plate 21 contacts at least a portion of the second wiring plate 22. That is, at least a portion of the first inner surface contacts at least a portion of the second inner surface, and portions of the first wiring plate 21 and the second wiring plate 22 connect to the cores of the electric wires, thereby improving the electrical conductivity of the wiring unit 20 and preventing the first wiring plate 21 and the second wiring plate 22 from moving up and down relative to each other. Referring to FIGS. 1 and 3, preferably, the first inner surface is completely attached to and electrically connected to the second inner surface, further improving the electrical conductivity and enhancing structural stability to prevent deformation of the first wiring plate 21 and the second wiring plate 22.

[0042] In another embodiment, a portion of the first wiring plate 21 and a portion of the second wiring plate 22 are stacked and in contact with each other. That is, a portion of the first wiring plate 21 and a portion of the second wiring plate 22 are stacked one above the other, and at least a portion of the first inner surface and at least a portion of the second inner surface are in contact. This stacked arrangement facilitates contact and connection between the portion of the first wiring plate 21 and the portion of the second wiring plate 22, while also occupying less space than a non-stacked arrangement.

[0043] The through holes 211 may be provided in the central region of the first wiring plate 21, or may be provided in the peripheral portion of the first wiring plate 21 and intersect with its side end face, in the same way that the cross-sectional area of ​​the first wiring plate 21 is smaller than the cross-sectional area of ​​the second wiring portion 20. In this case, a convex strip similar to that of the crimped second wiring plate 22 is provided at the end of the second wiring plate 22, or a step structure is formed from the second wiring plate 22.

[0044] The first wiring plate 21 of the terminal body 100 used for high-voltage connections is electrically connected to the first insertion plate 11, and the second wiring plate 22 is electrically connected to the second insertion plate 12. When a mating terminal is inserted into the insertion slot 101 formed between the first insertion plate 11 and the second insertion plate 12, the mating terminal is electrically connected to the insertion portion 10 and to the core of the electric wire via the wiring portion 20. The wiring portion 20 is provided with an alignment structure. The alignment structure includes a through hole 211 formed on the first inner surface and a boss 221 formed on the second inner surface. The boss 221 is received in the through hole 211 and is used together with the first outer surface to electrically connect with the core of the electric wire. Therefore, when the core of the electric wire is connected to the wiring portion 20, it can be electrically connected not only to the first wiring plate 21 via the first outer surface but also to the second wiring plate 22 via the boss 221. The core of the electric wire can be electrically connected to both the first wiring plate 21 and the second wiring plate 22 at the same time, which improves the conductivity and current-carrying performance of the wiring portion 20. At the same time, the structural stability of the terminal body 100 is improved by the dual arrangement of the first wiring plate 21 and the second wiring plate 22.

[0045] In one embodiment, the boss 221 and the wall of the through hole 211 have a clearance fit, i.e., a clearance is generated between the side wall of the boss 221 and the side wall of the through hole 211. The cross section of the boss 221 is square, and the cross section of the through hole 211 is correspondingly square. Therefore, the boss 221 has four side walls, at least one of which is spaced apart from the side wall of the through hole 211, which reduces the requirement for machining accuracy of the boss 221 and the through hole 211 and makes it convenient to align the boss 221 and the through hole 211.

[0046] In another embodiment, the boss 221 and the through hole 211 can form an interference fit, i.e., the cross-sectional area of ​​the boss 221 is slightly larger than that of the through hole 211, and the boss 221 is inserted into the through hole 211 by slight extrusion deformation. This not only achieves a fixed connection between the first wiring plate 21 and the second wiring plate 22 and an electrical connection between the boss 221 and the core of the electric wire, but also limits the relative displacement between the first wiring plate 21 and the second wiring plate 22.

[0047] In another embodiment, the boss 221 and the through hole 211 have a transitional fit. The transitional fit means that there is a possibility of a clearance fit or an interference fit when the through hole 211 and the boss 221 are assembled. The tolerance range of the through hole 211 and the tolerance range of the boss 221 overlap with each other. In this way, the tolerance range of the boss 221 and the through hole 211 is further relaxed, and the requirement for processing accuracy is reduced.

[0048] However, to ensure electrical connection with the core of the electric wire, the boss 221 usually has a larger cross section. Due to limitations in stamping technology, it is difficult to ensure the accuracy of the boss 221 size, resulting in a large tolerance for the fit between the through hole 211 and the boss 221, making it impossible to meet the requirement for a tight fit. In this regard, in this embodiment, referring to FIGS. 1 and 3 , the terminal body 100 further includes a positioning mechanism. The positioning mechanism includes a positioning pillar 222 and a positioning groove 212. The positioning pillar 222 and the positioning groove 212 are provided on the first wiring plate 21 and the second wiring plate 22, respectively. In this embodiment, the positioning groove 212 is provided on the first inner surface of the first wiring plate 21, and the positioning pillar 222 protrudes from the second inner surface of the second wiring plate 22. In another embodiment, the positioning grooves 212 may be formed on the second inner surface of the second wiring plate 22, and the positioning pillars 222 may protrude from the first inner surface of the first wiring plate 21. The positioning pillars 222 are inserted into the positioning grooves 212 to form an interference fit. The aforementioned interference fit refers to the fact that the cross-sectional area of ​​the positioning pillars 222 is slightly larger than that of the positioning grooves 212, so that the positioning pillars 222 are pressed into the positioning grooves 212, causing slight deformation and engaging with the positioning grooves 212 through friction. This interference fit between the positioning pillars 222 and the positioning grooves 212 fixes the positions of the first wiring plate 21 and the second wiring plate 22, preventing separation between the first wiring plate 21 and the second wiring plate 22, and suppressing relative shaking between the first wiring plate 21 and the second wiring plate 22.

[0049] The cross-sectional area of ​​the positioning groove 212 is smaller than the cross-sectional area of ​​the through-hole 211 to facilitate processing of the positioning pillar 222, thereby achieving a tight fit between the positioning pillar 222 and the positioning groove 212. In particular, by forming the positioning pillar 222 using the room temperature riveting method of the second wiring plate 22, the positioning pillar 222 can be quickly formed and the size accuracy of the positioning pillar 222 can be ensured. In particular, the bottom of the positioning groove 212 does not have to be a through hole. In this embodiment, the bottom of the positioning groove 212 is a through hole to facilitate processing.

[0050] In the embodiment, a plurality of positioning grooves 212 are provided at intervals, and a plurality of positioning pillars 222 are provided, with each positioning pillar 222 fitted into one of the positioning grooves 212. The one-to-one connection between the plurality of positioning pillars 222 and the plurality of positioning grooves 212 realizes the positioning function of the first wiring plate 21 and the second wiring plate 22, and prevents the first wiring plate 21 and the second wiring plate 22 from shaking relative to each other.

[0051] In another embodiment, at least a portion of the first wiring plate 21 and at least a portion of the second wiring plate 22 are stacked and in contact with each other. Because the first inner surface and the second inner surface are partially in contact and connected, the boss 221 and the through hole 211 may not be provided, and the positioning pillar 222 and the positioning groove 212 may not be provided. The contact and connection between the first inner surface and the second inner surface improves the conductivity and current flow of the wiring portion 20. Also, in another embodiment, referring to FIG. 4 , the terminal body 100 may include only the positioning pillar 222 and the positioning groove 212. The positioning pillar 222 and the positioning groove 212 are intended to limit the relative movement of the first wiring plate 21 and the second wiring plate 22. Furthermore, when welding the wiring using ultrasonic welding technology, the positioning pillar 222 and the positioning groove 212 improve the structural stability of the wiring portion 20 and prevent damage to the wiring portion 20. Furthermore, at least a portion of the first wiring plate 21 and at least a portion of the second wiring plate 22 are stacked and in contact with each other, i.e., the first wiring plate 21 and the second wiring plate 22 are electrically connected, so that the core of the electric wire can be electrically connected to the first wiring plate 21 and the second wiring plate 22 simultaneously, thereby improving the conductivity and current-carrying performance of the wiring unit 20. Furthermore, by stacking the first wiring plate 21 and the second wiring plate 22, the space occupied by the wiring unit 20 can be reduced and the structural stability of the wiring unit 20 can be improved.

[0052] Preferably, the first insert plate 11, the first wiring plate 21, the connecting bridge 23, the second wiring plate 22, and the second insert plate 12 are sequentially connected to form an integral unit. The first wiring plate 21 and the second wiring plate 22 are connected by plastically deforming both the wiring portion 20 and the bending portion 111 and bending the connecting bridge 23. The horizontal and vertical offset between the first wiring plate 21 and the first insert plate 11 can be achieved by deforming the bending portion 111. During processing, the sheet material can be formed into a U-shape, including the first insert plate 11, the first wiring plate 21, the connecting bridge 23, the second wiring plate 22, and the second insert plate 12, respectively. The wiring portion 20 is bent to insert the boss 221 into the through-hole 211. Furthermore, by inserting the positioning pillars 222 into the positioning grooves 212, the wiring portion 20 can be processed, and then by bending the bending portions 111, the first insertion plate 11 and the second insertion plate 12 can be spaced apart, thereby processing the insertion portion 10. In this embodiment, the sheet material is made of a metal material, which achieves good conductivity and plastic deformability.

[0053] 4 and 7 , to install the terminal body 100 and the restricting member 30, the terminal body 100 includes an installation structure on its insertion portion 10, and the restricting member 30 is connected to the terminal body 100 via the installation structure. The installation structures are respectively disposed on the first insertion plate 11 and the second insertion plate 12 for fixing the restricting member 30. The installation structures include at least one first restricting groove 102 disposed on the edge of the first insertion plate 11 and at least one second restricting groove 103 disposed on the edge of the second insertion plate 12. The first restricting groove 102 and the second restricting groove 103 are used to engage the restricting member 30. The restricting member 30 can be connected to the terminal body 100 via the installation structure. The restricting member 30 is used to limit the separation or opening between the first insertion plate 11 and the second insertion plate 12 and / or the approach or closing between the first insertion plate 11 and the second insertion plate 12. The limiting member 30 can be connected to the insertion section 10 via an installation structure. The first limiting groove 102 and the second limiting groove 103 provide a coupling position for the limiting member 30 and are used to limit the relative movement between the limiting member 30 and the insertion section 10.

[0054] In this embodiment, the first insert plate 11 has a first front end face facing forward, a first left end face facing left, and a first right end face facing right, and the second insert plate 12 has a second front end face facing forward, a second left end face facing left, and a second right end face facing right, and the ends of the first insert plate 11 refer to the first left end face and the first right end face. That is, a first limiting groove 102 is provided in at least one of the first left end face and the first right end face, and the ends of the second insert plate 12 refer to the second left end face and the second right end face, that is, a second limiting groove 103 is provided in at least one of the second left end face and the second right end face. 7 , in this embodiment, one first limiting groove 102 is provided on the first left end face, one first limiting groove 102 is provided on the first right end face, one second limiting groove 103 is provided on the second left end face, and one second limiting groove 103 is provided on the second right end face. The limiting member 30 can be connected to the first limiting groove 102 and the second limiting groove 103, and specifically, can engage with the first limiting groove 102 and the second limiting groove 103 to prevent the limiting member 30 from moving back and forth relative to the terminal body 100.

[0055] Due to the small size of the terminal body 100, the groove bottoms of the first limiting groove 102 and the second limiting groove 103 are generally formed as concave arc surfaces during the processing and manufacturing process. When the limiting member 30 is connected to the first limiting groove 102 and the second limiting groove 103, it cannot come into contact with the concave arc surfaces. For this reason, in this embodiment, see FIG. 7. Referring to FIG. 7, a first limiting lug 131 is provided at the groove bottom of the first limiting groove 102 in a convex shape. The extension length of the first limiting lug 131 is smaller than the groove depth of the first limiting groove 102. A second limiting lug 132 is provided at the groove bottom of the second limiting groove 103 in a convex shape. The extension length of the second limiting lug 132 is smaller than the groove depth of the second limiting groove 103. Both the first limiting lug 131 and the second limiting lug 132 are used for covering by the limiting member 30.

[0056] The first insert plate 11 is disposed in front of the first wiring plate 21. The first insert plate 11 has a first left end face facing left and a first right end face facing right, and is provided with two first limiting grooves 102, which are disposed in the first left end face and the first right end face, respectively. The second insert plate 12 is disposed in front of the second wiring plate 22, and the second insert plate 12 has a second left end face facing left and a second right end face facing right, and is provided with two second limiting grooves 103, which are disposed in the second left end face and the second right end face, respectively.

[0057] A convex limiting protrusion is provided on the front end surface of the insertion portion 10. Specifically, referring to FIGS. 4 and 5, the first insertion plate 11 also has a first front end surface facing forward, and the second insertion plate 12 also has a second front end surface facing forward. The first insertion plate 11 has a convex first limiting protrusion 141 on its first front end surface, or the second insertion plate 12 has a convex second limiting protrusion 142 on its second front end surface. Alternatively, the first insertion plate 11 has a convex first limiting protrusion 141 on its first front end surface, and the second insertion plate 12 has a convex second limiting protrusion 142 on its second front end surface. Both the first limiting protrusion 141 and the second limiting protrusion 142 are used for covering by the limiting member 30.

[0058] The present invention also provides a sheet material for manufacturing the terminal body 100 described in the above embodiment. The sheet material has a flat shape and is plastically deformable. It includes an insert portion 10 and a wiring portion 20. The insert portion 10 is provided with a spacer groove extending toward the connecting portion. The spacer groove separates the insert portion 10 into a first insert plate 11 and a second insert plate 12. The wiring portion 20 includes a first wiring plate 21, a second wiring plate 22, and a connecting bridge 23 corresponding to the spacer groove. The connecting bridge 23 is located between the first wiring plate 21 and the second wiring plate 22 and is plastically deformable. The first insert plate 11 extends continuously from the first wiring plate 21, and the second insert plate 12 extends continuously from the second wiring plate 22. During processing, the first wiring plate 21 and the second wiring plate 22 are attached by bending the connecting bridge 23, and the joint between the first insert plate 11 and the first wiring plate 21 or the joint between the second insert plate 12 and the wiring plate 22 is bent to form a bent portion 111, separating the first insert plate 11 and the second insert plate 12 and forming the insertion slot 101. In this embodiment, the joint between the first insert plate 11 and the first wiring plate 21 is bent to form the bent portion 111, and the end of the first insert plate 11 and the end of the second insert plate 12 are aligned after bending. This method of processing the terminal body 100 not only saves materials but also enables mass production and is convenient for rapid prototyping.

[0059] The present invention provides a connection terminal including the improved limiting member 30 of the above embodiment and a high-voltage connection terminal body 100. Here, the terminal body 100 has the same structure and performs the same function as the terminal body 100 described in the above embodiment, and will not be repeated here.

[0060] 8 and 11, the limiting member 30 includes a limiting structure and a mating structure. The mating structure is fixedly matched with an attachment structure provided on the terminal body 100. The limiting member 30 is fixed to the terminal body 100 via a connection between the mating structure and the attachment structure. The limiting structure is disposed across the gap between the first insertion plate 11 and the second insertion plate 12 to limit the opening between the first insertion plate 11 and the second insertion plate 12. The limiting structure avoids the opening of the cavity, allowing the mating terminal to be inserted into the cavity through the opening of the cavity, thereby realizing insertion of the mating terminal into the insertion slot 101.

[0061] Specifically, see FIGS. 8 and 11. The limiting structure includes a first panel 31, a limiting plate 33, and a second panel 32. The matching limiting structure includes a first hook 341 and a second hook 342. The first panel 31 and the second panel 32 face each other and are spaced apart, and the limiting plate 33 is configured to connect the first panel 31 and the second panel 32, with the first hook 341 connected to the first panel 31 and the second hook 342 connected to the second panel 32. The first hook 341 and the second hook 342 are each hooked onto the mounting structure to limit the removal of the limiting member 30 from the terminal body 100. Referring to FIGS. 4 and 6, in this embodiment, two first hooks 341 are provided, connected to the left and right sides of the first panel 31, respectively. The first hook 341 is fitted into the first limiting groove 102, and the width of the first hook 341 matches the width of the first limiting groove 102, allowing the two side walls of the first limiting groove 102 to limit the movement of the first hook 341 in the front-to-rear direction. Two second hooks 342 are also provided, connected to the left and right sides of the second panel 32, respectively. The second hooks 342 are fitted into the second limiting groove 103, and can be inserted into the second limiting groove 103. The width of the second hook 342 matches the width of the second limiting groove 103, allowing the two side walls of the second limiting groove 103 to limit the movement of the second hook 342 in the front-to-rear direction. In this way, the first hook 341 and the second hook 342 limit the movement of the limiting member 30 in the front-to-rear direction.

[0062] 6, specifically, the first hook 341 can be hooked onto the first limiting lug 131, and the second hook 342 can be hooked onto the second limiting lug 132. Note that the above-mentioned "hooking" refers to the first hook 341 being bent into a C-shape to surround the first limiting lug 131, and the second hook 342 being bent into a C-shape to surround the second limiting lug 132. That is, the cross sections of the first hook 341 and the second hook 342 are both C-shaped, and the first hook 341 hooks onto the side of the first insertion plate 11 facing the second insertion plate 12, and the second hook 342 hooks onto the side of the second insertion plate 12 facing the first insertion plate 11, thereby restricting the up and down movement of the limiting member 30. Preferably, the first hook 341 can clamp the first limiting lug 131 via a C-shaped structure, and the second hook 342 can clamp the second limiting lug 132 via a C-shaped structure. The setting of the first limiting lug 131 provides a clamping support point for the first hook 341, and the setting of the second limiting lug 132 provides a clamping support point for the second hook 342. This clamping setting improves the connection stability between the limiting member 30 and the terminal body 100. During processing, the first hook 341 and the second hook 342 can be initially bent inward to form long strips that wrap around the first limiting lug 131 and the second limiting lug 132, respectively.

[0063] Referring to FIG. 5, the insert 10 is located between the first panel 31 and the second panel 32, i.e., the first panel 31 is attached to the side of the first insert plate 11 facing away from the second insert plate 12, and the second panel 32 is attached to the side of the second insert plate 12 facing away from the first insert plate 11, and the first panel 31 and the second panel 32 can restrict the insert 10 from opening.

[0064] During processing, the accuracy of the first limiting groove 102 and the first hook 341 cannot be guaranteed due to the small size of the terminal body 100 and the limiting member 30. To ensure that the first hook 341 can be hooked onto the first limiting lug 131, the width of the first limiting groove 102 is generally slightly larger than the width of the first hook 341. Therefore, referring to FIGS. 4 and 9 , the first left end face and the first right end face each have a first punching groove 104 formed by punching. The first punching groove 104 is located near the first limiting groove 102, specifically, behind the first limiting groove 102. When the first hook 341 is hooked onto the first limiting lug 131, the first punching groove 104 is formed behind the first limiting groove 102.

[0065] Under the punching action, the portion between the first limiting groove 102 and the first punching groove 104 is pressed toward the first limiting groove 102 by the punching pressure, thereby reducing the width of the first limiting groove 102. That is, the arrangement of the first punching groove 104 is used to reduce the width of the first limiting groove 102 so that the two groove walls of the first limiting groove 102 can clamp the first hook 341. The second left end face and the second right end face are each provided with a second punching groove 105, which is formed by punching and opens near the second limiting groove 103. Specifically, the second punching groove 105 is arranged behind the second limiting groove 103, and the arrangement of the second punching groove 105 is used to reduce the width of the second limiting groove 103. The effect of the second punched grooves 105 is similar to that of the first punched grooves 104, and therefore will not be repeated here.

[0066] 4, in one embodiment, the first panel 31, the limiting plate 33, and the second panel 32 together form a U-shape. During assembly, the terminal body 100 is inserted into the U-shaped groove of the limiting member 30, and the limiting plate 33 is located at the front end of the terminal body 100, i.e., the limiting plate 33 covers the opening of the insertion part 10 facing forward. In this case, the insertion part 10 has an opening facing left or right, and the mating terminal can be inserted into the cavity part from the left opening or the right opening, i.e., the mating terminal can be inserted into the insertion slot 101 from the left or right side.

[0067] 4 and 7, the limiting member 30 has fixing holes 301, and limiting protrusions provided at the front end of the insertion portion 10 are fitted into the fixing holes 301 for insertion. The cooperation of the insertion of the limiting protrusions and the fixing holes 301 enables the limiting member 30 to be positioned to prevent the limiting member 30 from shaking in the left-right direction. In this embodiment, there are two fixing holes 301, and the two fixing holes 301 fit the first limiting protrusion 141 and the second limiting protrusion 142, respectively. The first limiting protrusion 141 and the second limiting protrusion 142 are located at positions for installing the limiting member 30. When installing the limiting member 30, first, the first limiting protrusion 141 and the second limiting protrusion 142 are fitted into the two fixing holes 301, respectively, to connect the mating structure and the installation structure.

[0068] 5, preferably, the limiting plate 33 is spaced apart from the front end surface of the terminal body 100. That is, the distance between the limiting plate 33 and the mating structure is greater than the distance between the first front end surface and the first limiting groove 102, so that an installation margin is provided for the connection between the mating structure and the installation structure, and it is possible to prevent a situation in which the mating structure and the installation structure cannot be fitted together due to a processing error.

[0069] The limiting member 30 in the above embodiment can be an integral piece formed by bending a plastically deformable, flat (planar or oblong) material. The flat material is a long strip, with two extending ends having strip-like portions extending in the width direction. The two ends of the flat material are bent 90° to form a first panel 31 and a second panel 32 that are parallel to each other, and an intermediate portion perpendicular to the first panel 31 and the second panel 32 serves as the limiting plate 33. The strip-shaped material is bent inward to form the first hook 341 and the second hook 342. This arrangement not only saves material but also facilitates the processing and manufacturing of the limiting member 30. At the same time, the limiting plate 33 is an integral structure, and there are no solder joints between the limiting plate 33 and the first panel 31 and the second panel 32, which improves the structural stability of the limiting plate 33 and prevents damage to the limiting plate 33 from the solder joints due to excessive opening force of the first insert plate 11 and the second insert plate 12.

[0070] 9 and 10 , in another embodiment, two limiting plates 33 are provided. The first panel 31, the second panel 32, and the two limiting plates 33 are surrounded together to form a ring, and the two limiting plates 33 are respectively disposed on the left and right sides of the insertion portion 10. That is, the first panel 31, the limiting plate 33, the second panel 32, and the limiting plate 33 are sequentially connected to form a ring. In this case, the two limiting plates 33 avoid the opening of the cavity facing forward, allowing the mating terminal to be inserted into the cavity from the opening toward the back, thereby enabling the mating terminal and the insertion portion 10 to be inserted and mated.

[0071] 9, when the mating structure is located at the rear end of the limiting member 30, the limiting plate 33 is located at the front of the mating structure, and the front end surface of the limiting plate 33 can be flush with the front end surface of the insert 10, thereby protecting the limiting protrusion and preventing it from wearing out, limiting the front end of the insert 10, and further limiting the openings of the first insert plate 11 and the second insert plate 12. In addition, the rear end surface of the first hook 341 is flush with the rear end surface of the first panel 31, and the rear end surface of the second hook 342 is flush with the rear end surface of the second panel 32, which makes it easier to cut the flat sheet material forming the limiting member 30 and reduces processing costs.

[0072] The limiting member 30 of the above embodiment can be a single piece formed by bending a plastically deformable flat material. The flat material has a square zigzag shape and two serrations (or sawtooth shapes) and two recesses, which are arranged in a staggered pattern. Two sides of the serrations extend along the width of the strip-shaped material, and the flat material is bent along the width of the serrations, with the bends forming intersections between the serrations and the recesses. The two extended ends are aligned and welded to form a ring. In this case, the cross section of the limiting member 30 is square, the two serrations are the first panel 31 and the second panel 32, and the two recesses are the limiting plate 33. The strip-shaped material is bent inward to form the first hook 341 and the second hook 342. This configuration saves material and facilitates the processing and manufacturing of the limiting member 30.

[0073] The aforementioned terminal body 100 can be mated with multiple different restricting members 30. In this embodiment, the terminal body 100 is provided with two different restricting members 30 for mating connection, thereby satisfying the requirement that mating terminals can be inserted in two different directions. This terminal body 100 is highly adaptable and convenient for mass production. Conventional restricting members 30 are typically arranged to be mated with different terminal bodies 100 separately, and the inserting portion 10 is wrapped around the terminal body 100 to achieve the restricting effect. In this embodiment, the restricting member 30 uses less material, is a single piece, and does not need to be wrapped around the inserting portion 10, which is convenient for processing, saves material, and has strong structural stability.

[0074] Referring to FIGS. 4 and 9, to facilitate contact and connection between the mating terminal and the insertion portion 10, the connecting terminal further includes a resilient contact member 40 positioned between the first insertion plate 11 and the second insertion plate 12. The resilient contact member 40 can be connected to the first insertion plate 11 and electrically connected thereto, or the resilient contact member 40 can be connected to the second inner surface and electrically connected thereto. In this embodiment, referring to FIG. 6, the first insertion plate 11 and the second insertion plate 12 can also be connected by the resilient contact member 40. When the mating terminal is inserted into the insertion slot 101, it is inserted between the two resilient contact members 40, and the resilient contact member 40 elastically deforms to resiliently contact the upper and lower surfaces of the mating terminal, thereby achieving attachment to the mating terminal. The resilient contact member 40 is also electrically connected to the insertion portion 10, achieving electrical connection with the mating terminal through resilient contact and connection. In this way, the mating terminal is electrically connected to the insertion portion 10 via the elastic contact member 40, and the elastic contact can prevent poor contact during electrical connection.

[0075] 7 and 10 , the elastic contact member 40 may have a clamping hole 401, and the connection terminal may further include a clamping block 15. The clamping block 15 may protrude from the side of the first insertion plate 11 facing the second insertion plate 12, or may protrude from the side of the second insertion plate 12 facing the first insertion plate 11, and the clamping block 15 may be inserted into the clamping hole 401 to form an interference fit. In this embodiment, the first insertion plate 11 and the second insertion plate 12 are each provided with a clamping block 15, and two elastic contact members 40 are provided and engaged with the clamping blocks 15 via the clamping holes 401, thereby realizing detachable connection of the terminal body 100 and facilitating quick assembly of the connection terminal.

[0076] To achieve a quick connection between the connection terminal and the connector housing, the limiting member 30 also includes a clamping elastic piece 35. The clamping elastic piece 35 can be connected to the first panel 31, the second panel 32, or the limiting plate 33. In this embodiment, two clamping elastic pieces 35 are provided, which are connected to the first panel 31 and the second panel 32, respectively. The clamping elastic pieces 35 can engage with mating sockets on the connector housing through elastic deformation.

[0077] 8 and 11, to facilitate alignment of the connection terminal and the connector housing, the limiting member 30 further includes a guide assembly connected to the first panel 31, the second panel 32, or the limiting plate 33, and the guide assembly includes two guide protrusions 36, which can be disposed on the left and right sides of the clamp elastic piece 35, respectively, and the guide protrusions 36 extend in the front-to-rear direction. The connector housing is provided with a sliding rail therein, and the guide protrusions 36 are slidably connected to the sliding rail to guide the installation of the terminal body 100.

[0078] In this embodiment, two guide assemblies are provided, each connected to the first panel 31 and the second panel 32. The distance between the two guide protruding strips 36 provided on the first panel 31 is different from the distance between the two guide protruding strips 36 provided on the second panel 32. Correspondingly, the sliding rails in the mating sockets of the connector housing are also provided at different intervals, so that when installing a connection terminal, it is possible to determine whether the connection terminal has been assembled correctly by determining whether the guide assemblies are engaged with the sliding rails.

[0079] The present application further provides a cable assembly including a high-voltage terminal body 100. The cable assembly includes an electric wire and the terminal body 100 described in the above embodiment, with the core of the electric wire electrically connected to the wiring portion 20 of the terminal body 100. The terminal body 100 has the same structure and functions as the terminal body 100 described in the above embodiment, and will not be described again here. In one embodiment, the electric connection with the wiring portion 20 can be achieved by welding the core of the electric wire to the wiring portion 20 using ultrasonic welding technology. Furthermore, since the electric wire core of the terminal body 100 and the wiring portion 20 are welded and connected using ultrasonic welding technology, structural stability is improved. In another embodiment, the electric wire core can be connected by contacting the first outer surface of the connecting portion to achieve electrical connection between the electric wire core and the terminal body. The above-mentioned contact and connection may be a fixed connection, a movable connection, or a detachable connection.

[0080] The present invention provides a connector including a connection housing for high-voltage connection and a terminal body 100, which is an improvement over the above-described embodiment. The connection housing is provided with a terminal cavity for accommodating the terminal body 100 so as to securely install the terminal body 100. Of these, the terminal body 100 has the same structure and fulfills the same function as the terminal body 100 described in the above-described embodiment, and will not be repeated here.

[0081] As mentioned above, the above embodiments are for illustrating the technical solutions of the present invention, but are not intended to be limiting. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art will understand that the technical solutions described in the above embodiments can still be modified, or some technical features in the technical solutions can be equivalently substituted, and these modifications or equivalent substitutions will not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions in the various embodiments of the present application, and all should be included in the protection scope of the present application. [Explanation of symbols]

[0082] 100... Terminal body 10 ... Insertion section 101 ... Insertion slot 102 ... First limiting groove 103 ... Second limit groove 104 ... First punching groove 105 ... Second punching groove 11 ... First insert plate 111 ... Bend 12 ... Second insert plate 131 ... First limit lag 132 ... Second limit lag 141 ... First limiting protrusion 142 ... Second limiting protrusion 15... Clamp block 20 … Wiring section 21 ... First wiring plate 211 ... through hole 212 ... Positioning groove 22 ... Second wiring plate 221 ... Boss 222 ... Positioning pillar 23 … Connecting Bridge 30...Restricting member 301…Fixing hole 31 ... First panel 32 … Second panel 33...Restriction plate 341 ... First Hook 342 ... Second Hook 35 ... Clamp elastic piece 36 ... Convex guide strip 40... Elastic contact member 401 ... Clamp hole

Claims

1. an insert comprising a first insert plate and a second insert plate; Wiring section comprising a first wiring plate, a second wiring plate, and an alignment structure Including, a gap is formed between the first insert plate and the second insert plate, the first insert plate and the second insert plate together surrounding each other to form an insertion slot configured to receive a mating terminal; a first wiring plate electrically connected to the first insertion plate, a second wiring plate electrically connected to the second insertion plate, the first wiring plate having a first outer surface and a first inner surface, the second wiring plate having a second outer surface and a second inner surface, the first inner surface being disposed opposite the second inner surface, and the alignment structure having a through hole and a boss, the through hole being provided in the first wiring plate and the boss being provided on the second inner surface, the boss being received in the through hole and configured to be electrically connected to a core of an electric wire together with the first outer surface.

2. 2. The high-voltage connecting terminal body according to claim 1, wherein the upper surface of the boss and the first outer surface form a connecting surface configured to connect the core of the electric wire, and the connecting surface is flat.

3. 2. The high-voltage connecting terminal body according to claim 1, wherein the boss is formed by stamping the second wiring plate.

4. The high-voltage connecting terminal body according to claim 1 , wherein the boss and the wall of the through hole are a clearance fit.

5. 2. The high voltage connection terminal body according to claim 1, wherein the boss and the wall of the through hole are fitted together.

6. 2. The high-voltage connecting terminal body according to claim 1, wherein said first inner surface is fully attached to and electrically connected with said second inner surface.

7. 2. The high-voltage connecting terminal body according to claim 1, wherein a peripheral edge of said first wiring plate and a peripheral edge of said second wiring plate are aligned.

8. The high-voltage connecting terminal body according to claim 1 , wherein the wiring portion has a flat planar shape.

9. 2. The high-voltage connecting terminal body according to claim 1, wherein the thickness of the wiring portion is greater than the thickness of the first wiring plate or the second wiring plate.

10. 2. The high-voltage connecting terminal body according to claim 1, wherein the wiring portion further comprises a connection bridge connecting the first wiring plate and the second wiring plate, the connection bridge being plastically deformable, and the insertion of the first wiring plate and the second wiring plate can be achieved by bending the connection bridge, and the insertion portion, the wiring portion and the connection bridge are an integral piece.

11. 2. The high-voltage connection terminal body according to claim 1, wherein the first insertion plate and the second insertion plate are arranged opposite each other, and the first insertion plate and the first wiring plate are connected to each other via a bent portion, or the second insertion plate and the second wiring plate are connected to each other via a bent portion.

12. 2. The high-voltage connection terminal body according to claim 1, wherein the wiring portion further comprises a positioning structure, the positioning structure comprising a positioning groove and a positioning pillar, one of the positioning groove and the positioning pillar being disposed on the first inner surface, the other of the positioning groove and the positioning pillar being disposed on the second inner surface, and the positioning pillar being fitted and inserted into the positioning groove to form an interference fit.

13. The high-voltage connection terminal body according to claim 12 , wherein a cross-sectional area of ​​the positioning groove is smaller than a cross-sectional area of ​​the through hole.

14. The high-voltage connecting terminal body according to claim 12, wherein the positioning pillar is a positioning pillar formed by cold riveting.

15. A cable assembly comprising a high-voltage terminal body including an electric wire and the terminal body according to any one of claims 1 to 14, wherein the core of the electric wire and the wiring portion of the terminal body are electrically connected.

16. The cable assembly according to claim 15, wherein the core of the wire is welded to the wiring portion of the terminal body.

17. 16. The cable assembly of claim 15, wherein the wire core contacts the first outer surface of the wiring portion.

18. A connector comprising a connection housing and a terminal body for high voltage connection according to any one of claims 1 to 14, wherein the connection housing comprises a terminal cavity configured to receive the terminal body, and the terminal cavity is configured to fixedly mount the terminal body.

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