Terminal junction box

Abstract

The utility model provides a terminal junction box, and relates to the technical field of high-voltage large-current connectors, the terminal junction box comprises a cover body, a box body and a conductive column, the cover body is provided with a connecting hole, the box body and the cover body are connected to define a containing cavity, at least part of the conductive column is contained in the connecting hole, and the conductive column is used for being electrically connected with a terminal on the side, away from the box body, of the cover body. The conductive column and the cover body are in sealing connection to seal the accommodating cavity. The conductive columns of the terminal junction box are electrically connected with the terminals and are in sealed connection with the cover body at the same time, so that the installation process of the terminal junction box is simplified, and the conductive performance and the sealing reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage and high-current connectors, in particular to a terminal junction box. Background Art

[0002] In electrical appliances, in order to ensure the low cost and high reliability of connectors, high-voltage cables are directly locked through OT terminals to achieve the conduction of high-voltage circuits. This locking method requires the design of a junction box. Usually, one end of the OT terminal is locked to the housing of the junction box with screws to connect the OT terminal to the conductive part, thereby achieving the conduction of the circuit. The junction box leads out the wiring through screws. There are gaps between the conductive base under the screws and the box structure, which is not waterproof. Manual sealing and gluing are required to achieve sealing, and it is not easy to disassemble. That is, the conductive function and sealing function of the junction box cannot be achieved simultaneously, and the installation steps of the junction box are relatively complicated and costly. Utility Model Content

[0003] The utility model aims to provide a terminal junction box, which solves the problem that the conductive function and the sealing function of the junction box cannot be realized synchronously.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a terminal junction box, comprising: a cover body having a connecting hole; a box body connected to the cover body to enclose a receiving cavity; a conductive column at least partially received in the connecting hole, the conductive column and the cover body being sealingly connected to seal the receiving cavity, the conductive column being used to electrically connect to the terminal on a side of the cover body away from the box body.

[0006] In one embodiment, a sealing ring is provided between the conductive column and the cover body, the sealing ring is sleeved on the conductive column, and the sealing ring is clamped between the cover body and the conductive column.

[0007] In one embodiment, the conductive column further includes a conductive column body and a base, the base is accommodated in the accommodating cavity, and the base is located at one end of the conductive column body.

[0008] In one embodiment, the cover body includes a cover body and an extension structure, the connection hole is arranged on the cover body, and the extension structure extends from the edge of the connection hole along the penetration direction of the connection hole toward a side away from the body.

[0009] In one embodiment, the base is provided with a groove, the groove surrounds the conductive column body, the sealing ring is accommodated in the groove, and the extension structure extends into the groove and is gap-matched with the side wall of the groove.

[0010] In one embodiment, one end of the conductive column body away from the base passes through the connecting hole, and when the extension structure contacts the bottom wall of the groove, in the axial direction of the conductive column body, the minimum distance between the end of the conductive column body passing through the connecting hole and the edge of the connecting hole is greater than or equal to 0.3 mm.

[0011] In one embodiment, the terminal junction box also includes a terminal and a fastener, wherein the fastener is located on a side of the cover body facing away from the box body, the fastener and the conductive column are detachably connected, and a mounting hole is provided at one end of the terminal, and one of the fastener and the conductive column passes through the mounting hole.

[0012] In one embodiment, the fastener includes a threaded column, and the conductive column includes a threaded hole threadedly matched with the threaded column, or the fastener includes a threaded hole, and the conductive column includes a threaded column threadedly matched with the threaded hole.

[0013] In one embodiment, a limiting groove is provided on a side of the cover body facing away from the box body, and at least part of the terminal is accommodated in the limiting groove, and the limiting groove is used to limit the terminal on a plane perpendicular to the penetration direction of the connecting hole.

[0014] In one embodiment, a convex strip is provided on the side wall of the limiting groove, and the extension direction of the convex strip is parallel to or inclined with the penetration direction of the connecting hole. In the penetration direction of the connecting hole, the convex strip gradually becomes thicker from the bottom wall of the limiting groove to the opening of the limiting groove.

[0015] In one embodiment, the terminal junction box further comprises a heat shrink tube, an end of the terminal facing away from the mounting hole is used to connect an electric wire, and the heat shrink tube is sleeved at the connection between the terminal and the electric wire.

[0016] The terminal junction box provided by the utility model includes a cover body, a box body and a conductive column. The cover body has a connecting hole. The box body and the cover body are connected to enclose and form a receiving cavity, so that the connecting hole becomes the opening of the receiving cavity; at least part of the conductive column is accommodated in the connecting hole, and the conductive column is used to electrically connect with the terminal on the side of the cover body away from the box body, so that the conductive column can connect with the inside and outside of the terminal junction box, so as to realize that the inside of the terminal junction box can be electrically connected with the outside of the terminal junction box, that is, the conductive function of the terminal junction box is realized. The conductive column and the cover body are sealed to seal the receiving cavity. Since the connection between the box body and the cover body is well sealed, a sealed connection is made between the conductive column and the cover body, so that the receiving cavity is completely sealed, thereby realizing the sealing function of the terminal junction box; at the same time, the conductive column can connect with the inside and outside of the terminal junction box, so as to realize that the inside of the terminal junction box can be electrically connected with the outside of the terminal junction box, so that the conductive column synchronously realizes the conductive function and sealing function of the junction box, which is conducive to simplifying the installation process of the terminal junction box and improving the conductive performance and sealing reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic structural diagram of a terminal junction box according to an implementation method;

[0019] Figure 2 is an exploded view of a terminal, a fastener, and a terminal block in one embodiment;

[0020] Figure 3 is an exploded view of a terminal, heat shrink tubing, and wires in one embodiment;

[0021] Figure 4 is an exploded view of a box body and a cover body of an embodiment;

[0022] Figure 5 is an exploded view of a box body, a conductive column and a sealing ring in an implementation manner;

[0023] Figure 6 A schematic cross-sectional view of a terminal junction box in a direction perpendicular to the extension direction of the terminal and a partial enlarged view of a limiting groove according to an embodiment;

[0024] Figure 7 is a schematic cross-sectional view of a terminal junction box in an embodiment parallel to an extension direction of the terminal;

[0025] Figure 8It is a schematic cross-sectional view of a terminal junction box according to another embodiment in a direction parallel to the extension direction of the terminal.

[0026] Description of reference numerals:

[0027] 10-box body, 11-rubber ring, 20-cover body, 21-cover body, 211-connecting hole, 22-limiting groove, 221-convex strip, 23-extension structure, 24-stud;

[0028] 30-conductive column, 31-conductive column body, 32-base, 321-groove;

[0029] 40-sealing ring, 50-terminal, 51-mounting hole, 52-heat shrink tube, 60-fastener, 70-wire. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] The utility model embodiment provides a terminal junction box, see Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The terminal 50 junction box includes a cover body 20 and a box body 10, and the cover body 20 has a connection hole 211. The box body 10 and the cover body 20 are connected to enclose a receiving cavity, so that the connection hole 211 becomes the opening of the receiving cavity. Optionally, the box body 10 and the cover body 20 are stacked and connected, and the upper and lower edges of the box body 10 and the cover body 20 are consistent. Glue is applied at the edge connection of the box body 10 and the cover body 20, or a rubber ring 11 is used at the edge connection of the box body 10 and the cover body 20 for solid sealing; so that the connection between the box body 10 and the cover body 20 forms a sealing interface. And threaded holes evenly spaced and distributed are opened on the edges of the box body 10 and the cover body 20, and the threaded holes of the box body 10 and the threaded holes of the cover body 20 are arranged one by one, and then fixed by studs 24, so that the box body 10 and the cover body 20 are tightly fixed, and the connection between the box body 10 and the cover body 20 is well sealed.

[0037] The terminal 50 junction box also includes a conductive column 30, at least part of which is accommodated in the connection hole 211. The conductive column 30 is used to electrically connect to the terminal 50 on the side of the cover 20 away from the box body 10, that is, the conductive column 30 can be partially accommodated in the connection hole 211, and / or, partially accommodated in the terminal 50 junction box, and / or, partially located outside the terminal 50 junction box and the connection hole 211, so that the conductive column 30 can connect the inside and outside of the terminal 50 junction box, so that the inside of the terminal 50 junction box can be electrically connected to the outside of the terminal 50 junction box, that is, the conductive function of the terminal 50 junction box is realized. In addition, one end of the conductive column 30 and the terminal 50 is electrically connected to the outside of the accommodating cavity, so that the electrical connection between the conductive column 30 and the terminal 50 has good ventilation performance. Since conduction will cause the temperature to rise, good ventilation performance is conducive to cooling the electrical connection between the conductive column 30 and the terminal 50, thereby helping to improve the service life of the terminal 50 junction box.

[0038] Optionally, terminal 50 is an OT terminal, which is a circular pre-insulated terminal. It is one of the cold-pressed terminal specifications and is an accessory product used to achieve electrical connection. Because one end of the terminal is circular and the other end is cylindrical, it looks like an OT terminal, so it is called an OT terminal in the industry. The cylindrical end of the OT terminal is used to connect to the wire 70, and the circular end and the connecting hole 211 are arranged relative to each other, so that the circular end and the conductive column 30 are electrically connected, that is, the terminal 50 junction box is electrically connected to the wire 70.

[0039] The conductive post 30 and the cover body 20 are sealed and connected to seal the accommodating cavity. Since the connection between the box body 10 and the cover body 20 is well sealed, a sealed connection is made between the conductive post 30 and the cover body 20, so that the accommodating cavity is completely sealed, thereby realizing the sealing function of the terminal 50 junction box. At the same time, the conductive post 30 can connect the inside and outside of the terminal 50 junction box, so that the inside of the terminal 50 junction box can be electrically connected to the outside of the terminal 50 junction box, so that the conductive post 30 simultaneously realizes the conductive function and the sealing function of the terminal 50 junction box, which is conducive to simplifying the installation process of the terminal 50 junction box and improving the conductive performance and sealing reliability.

[0040] Among them, the sealing connection method between the conductive column 30 and the cover body 20 includes but is not limited to using a sealing ring 40 between the conductive column 30 and the cover body 20, interference fit between the conductive column 30 and the cover body 20, etc., so that the gap between the conductive column 30 and the cover body 20 is filled, thereby achieving good sealing performance.

[0041] The terminal 50 junction box includes a cover body 20, a box body 10 and a conductive column 30, the cover body 20 has a connecting hole 211, the box body 10 and the cover body 20 are connected to enclose a receiving cavity, so that the connecting hole 211 becomes the opening of the receiving cavity; at least part of the conductive column 30 is accommodated in the connecting hole 211, and the conductive column 30 is used to electrically connect with the terminal 50 on the side of the cover body 20 away from the box body 10, so that the conductive column 30 can connect the inside and outside of the terminal 50 junction box, thereby realizing that the inside of the terminal 50 junction box can be electrically connected to the outside of the terminal 50 junction box, that is, the conductive function of the terminal 50 junction box is realized. The conductive post 30 and the cover body 20 are sealed and connected to seal the accommodating cavity. Since the connection between the box body 10 and the cover body 20 is well sealed, a sealed connection is made between the conductive post 30 and the cover body 20, so that the accommodating cavity is completely sealed, thereby realizing the sealing function of the terminal 50 junction box. At the same time, the conductive post 30 can connect the inside and outside of the terminal 50 junction box, so that the inside of the terminal 50 junction box can be electrically connected to the outside of the terminal 50 junction box, so that the conductive post 30 simultaneously realizes the conductive function and the sealing function of the junction box, which is conducive to simplifying the installation process of the terminal 50 junction box and improving the conductive performance and sealing reliability.

[0042] In one implementation, see Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A sealing ring 40 is provided between the conductive column 30 and the cover body 20. The sealing ring 40 is sleeved on the conductive column 30. The sealing ring 40 is clamped between the cover body 20 and the conductive column 30. The sealing ring 40 is elastic, so that the sealing ring 40 can be deformed when clamped between the cover body 20 and the conductive column 30, thereby filling the gap between the cover body 20 and the conductive column 30, so that the accommodating cavity is completely sealed, thereby realizing the sealing function of the terminal 50 junction box.

[0043] Optionally, the sealing ring 40 may be located in the middle of the conductive column 30, and the sealing ring 40 abuts against the side wall of the conductive column 30 and the inner wall of the connecting hole 211. In this case, the thickness of the cover 20 is relatively large, that is, the length of the inner wall of the connecting hole 211 is relatively long, so that the sealing ring 40 is accommodated in the inner wall of the connecting hole 211 and abuts against the inner wall of the connecting hole 211. Alternatively, the sealing ring 40 may also be sandwiched between the cover 20 and the bottom wall of the box body 10, and sleeved on the conductive column 30, and the sealing ring 40 abuts against the side wall of the conductive column 30, the bottom wall of the box body 10 and the cover 20, respectively. In this case, at the edge of the connecting hole 211, the length of the accommodating cavity along the penetrating direction of the connecting hole 211 is relatively small, so that the sealing ring 40 abuts against the bottom wall of the box body 10 and the cover 20, respectively.

[0044] Optionally, the material of the sealing ring 40 includes but is not limited to silicone, butyl rubber, etc. Since one end of the conductive column 30 is electrically connected to the terminal 50, the terminal 50 junction box will produce conductive temperature rise and shutdown cooling, that is, frequent high and low temperature shocks. At the same time, the terminal 50 junction box will vibrate at the sealing interface, which will also cause the temperature to rise. Therefore, using a material with a temperature resistance of more than 100°C is beneficial to improving the service life of the sealing ring 40, thereby ensuring the sealing performance of the terminal 50 junction box, and also improving the service life of the terminal 50 junction box.

[0045] In one implementation, see Figure 5 , Figure 6 and Figure 7 The conductive column 30 also includes a conductive column body 31 and a base 32. The base 32 is accommodated in the accommodating cavity. The base 32 is located at one end of the conductive column body 31, so that the conductive column 30 contacts the box body 10 through the base 32, which is conducive to increasing the volume of the conductive column 30 in the accommodating cavity and facilitating the electrical connection of the conductive column 30 with other structures. Among them, the position of the sealing ring 40 can be spaced apart from the base 32 of the conductive column 30, or it can be located on the base 32 of the conductive column 30.

[0046] Optionally, a positioning groove for the base 32 is provided in the box body 10, and at least a portion of the base 32 is accommodated in the positioning groove, and the inner wall of the positioning groove limits the side wall of the base 32, so that when the conductive column 30 is placed in the positioning groove, the relative position of the conductive column 30 and the box body 10 remains fixed, and the position of the positioning groove and the connecting hole 211 are arranged relative to each other, so that when the conductive column 30 is placed in the positioning groove, the installation of the terminal 50 junction box can be realized, which is conducive to simplifying the installation process of the terminal 50 junction box.

[0047] Optionally, the sealing ring 40 is clamped between the cover body 20 and the base 32, that is, the sealing ring 40 is respectively abutted against the side wall of the conductive column body 31, the base 32 and the cover body 20, so that when the cover body 20 and the conductive column 30 are installed, the sealing ring 40 is pressed between the cover body 20 and the base 32, and the position of the sealing ring 40 remains unchanged, which is conducive to simplifying the installation process of the sealing ring 40, avoiding displacement of the sealing ring 40 during the installation process to affect the sealing effect or fall out, and ensuring the connection stability of the sealing ring 40 and the conductive column 30.

[0048] In one implementation, see Figure 1 and Figure 3 The cover 20 includes a cover body 21 and an extension structure 23. The connection hole 211 is provided on the cover body 21. The extension structure 23 extends from the edge of the connection hole 211 along the penetration direction of the connection hole 211 toward the side away from the body, which is conducive to reducing the thickness of the cover 20, thereby reducing the manufacturing cost of the cover 20, and at the same time increasing the volume of the accommodating cavity, so that other structures can be accommodated in the terminal 50 junction box. Among them, the sealing ring 40 can be sandwiched between the conductive column body 31 and the extension structure 23, or between the base 32 and the extension structure 23.

[0049] Optionally, the sealing ring 40 is clamped between the extension structure 23 and the base 32. The extension structure 23 and the sealing ring 40 abut against each other, so that the extension structure 23 and the sealing ring 40 are squeezed against each other, thereby forming an effective sealing area. This prevents the sealing ring 40 from being displaced during the installation process to affect the sealing effect or fall out, thereby ensuring the connection stability between the sealing ring 40 and the conductive column 30.

[0050] Optionally, the cover body 20 is manufactured by injection molding, and the extension structure 23 is provided to facilitate accommodating defects in the manufacturing process of the cover body 20 and guiding the defect position so that the defect position is away from the stress-bearing surface, thereby improving the reliability and long-term stability of the seal.

[0051] Optionally, the base 32 is provided with a groove 321, the groove 321 surrounds the conductive column body 31, the sealing ring 40 is accommodated in the groove 321, the extension structure 23 extends into the groove 321 and cooperates with the side wall gap of the groove 321. By extending the extension structure 23 into the groove 321, the compression reliability of the extension structure 23 and the sealing ring 40 is enhanced, and the sealing effect is ensured; the extension structure 23 cooperates with the side wall gap of the groove 321, which is conducive to reducing the gap between the cover body 20 and the conductive column 30, and further enhancing the sealing performance between the cover body 20 and the conductive seat; the sealing ring 40 is squeezed by the extension structure 23 and the inner wall of the groove 321, which limits the compression deformation direction of the sealing ring 40, and further ensures the sealing effect between the cover body 20 and the conductive column 30.

[0052] In one implementation, see Figure 1 and Figure 3 The end of the conductive column body 31 away from the base 32 passes through the connecting hole 211, which is beneficial to the electrical connection between the conductive column 30 and the terminal 50, that is, the power output is maintained preferentially. At the same time, the connecting surface between the conductive column 30 and the terminal 50 can be higher than the upper surface of the cover body 20, which is beneficial to reduce the risk of crushing the cover body 20.

[0053] When the extension structure 23 contacts the bottom wall of the groove 321, in the axial direction of the conductive column body 31, the minimum distance between the end of the conductive column body 31 that passes through the connecting hole 211 and the edge of the connecting hole 211 is greater than or equal to 0.3 mm, that is, when the sealing ring 40 is not placed, the extension structure 23 contacts the bottom wall of the groove 321. At this time, in the axial direction of the conductive column body 31, the minimum distance between the end face of the end of the conductive column body 31 that protrudes from the connecting hole 211 and the edge of the connecting hole 211 is greater than or equal to 0.3 mm, so that space is reserved for the sealing ring 40 to be accommodated in the groove 321. Since the sealing ring 40 itself has a certain thickness, when the sealing ring 40 is placed in the groove 321, the thickness of the sealing ring 40 and the length of the conductive column body 31 that protrudes from the connecting hole 211 offset each other, which is conducive to keeping the conductive column 30 always passing through the connecting hole 211, that is, maintaining power output. At the same time, it is helpful to reduce the risk of crushing the cover body 20, and the electrical connection between the conductive column 30 and the terminal 50 has good ventilation performance, and the thermal impedance of the electrical connection is relatively small, which ensures the heat dissipation of the terminal 50 junction box.

[0054] In one implementation, see Figure 1 , Figure 2 and Figure 3The terminal 50 junction box also includes a terminal 50 and a fastener 60. The fastener 60 is located on the side of the cover 20 away from the box body 10. The fastener 60 and the conductive column 30 are detachably connected. A mounting hole 51 is provided at one end of the terminal 50. One of the fastener 60 and the conductive column 30 passes through the mounting hole 51. By connecting the fastener 60 and the conductive column 30, the fastener 60 connects the terminal 50 and the conductive column 30, thereby realizing the conductive function of the terminal 50 junction box; and the fastener 60 presses the terminal 50 and the conductive column 30. The pressure of the fastener 60 on the terminal 50 is transmitted to the cover 20, which also presses the cover 20 and the conductive column 30, so that the cover 20 and the conductive column 30 are sealed and connected, so that the conductive function and the sealing function of the terminal 50 junction box are simultaneously realized only by the fixation of the fastener 60.

[0055] Terminal 50 can be an OT terminal. Optional, see Figure 7 The fastener 60 includes a threaded column, and the conductive column 30 includes a threaded hole that is threadedly matched with the threaded column; a through hole or a blind hole is provided on the conductive column body 31, and a threaded hole is provided on the inner wall of the through hole or the blind hole of the conductive column body 31, and the threaded column passes through the mounting hole 51, and the threaded hole and the threaded column are threadedly connected on the side of the terminal 50 close to the cover body 20, that is, the fastener 60 is a screw, and the conductive column body 31 is a nut, and the fastener 60 passes through the mounting hole 51 of the OT terminal and passes through the connection hole 211. Alternatively, please refer to Figure 8 The fastener 60 includes a threaded hole, and the conductive column 30 includes a threaded column threadedly matched with the threaded hole; the threaded column passes through the mounting hole 51, and the threaded hole and the threaded column are threadedly connected on the side of the terminal 50 away from the cover body 20, that is, the fastener 60 is a nut, and the conductive column body 31 is a screw, and the conductive column body 31 passes through the connecting hole 211 and passes through the mounting hole 51 of the OT terminal.

[0056] Optionally, the fastener 60 is a screw. Since the terminal 50 junction box needs to undergo large current discharge, the fastener 60 needs to use a screw of M6 or above. Correspondingly, the mounting hole 51 selected for the OT terminal must at least meet the hole diameter of the M6 ​​bolt. The mounting hole 51 should be neither too large nor too small. If the mounting hole 51 is too small, the bolt cannot be inserted. If the mounting hole 51 is too large, the contact area between the OT terminal and the screw and the conductive column 30 is reduced, affecting the conductive performance.

[0057] Optionally, the terminal 50 junction box further includes a heat shrink tube 52. The end of the terminal 50 away from the mounting hole 51 is used to connect the wire 70. The heat shrink tube 52 is sleeved at the connection between the terminal 50 and the wire 70, so that after the terminal 50 is crimped with the wire, the heat shrink tube 52 covers the connection between the terminal 50 and the wire harness, further improving the connection stability between the terminal 50 and the wire 70. Among them, since the heat shrink tube 52 is close to the fixed position of the fastener 60, it will be affected by the conductive temperature rise and shutdown cooling, so the heat shrink tube 52 is preferably selected from a material with a temperature resistance of more than 100°C.

[0058] In one implementation, see Figure 1 , Figure 6 and Figure 7 A limiting groove 22 is provided on the side of the cover body 20 facing away from the box body 10, and at least part of the terminal 50 is accommodated in the limiting groove 22. The limiting groove 22 is used to limit the terminal 50 on a plane perpendicular to the penetration direction of the connecting hole 211, so as to prevent the terminal 50 from rotating on the plane perpendicular to the penetration direction of the connecting hole 211, thereby ensuring the stability of the relative position of the terminal 50 and the cover body 20, ensuring the stability of the outlet position of the wire 70, and ensuring the stability of the position of the wire 70 pressing the cover body 20, thereby ensuring the reproducibility of the mass production position, that is, the consistency of quality.

[0059] Optionally, a convex strip 221 is provided on the side wall of the limiting groove 22, and the extension direction of the convex strip 221 is parallel to or inclined with the penetration direction of the connecting hole 211. In the penetration direction of the connecting hole 211, the convex strip 221 gradually becomes thicker from the bottom wall of the limiting groove 22 to the opening of the limiting groove 22, so that after the terminal 50 is installed in the limiting groove 22, the convex strip 221 limits the terminal 50 in the penetration direction of the connecting hole 211, preventing the terminal 50 from moving in the penetration direction of the connecting hole 211, so that the relative position of the terminal 50 and the cover body 20 remains unchanged in the space, thereby ensuring the stability of the relative position of the terminal 50 and the cover body 20.

[0060] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A terminal junction box, characterized in that: include: A cover body having a connecting hole; A box body connected to the cover body to enclose and form a receiving cavity; A conductive column is at least partially accommodated in the connecting hole. The conductive column is sealed and connected to the cover body to seal the accommodating cavity. The conductive column is used to electrically connect to the terminal on a side of the cover body away from the box body.

2. The terminal junction box according to claim 1, characterized in that: A sealing ring is provided between the conductive column and the cover body, the sealing ring is sleeved on the conductive column, and the sealing ring is clamped between the cover body and the conductive column.

3. The terminal junction box according to claim 2, characterized in that: The conductive column further comprises a conductive column body and a base. The base is accommodated in the accommodating cavity and is located at one end of the conductive column body.

4. The terminal junction box according to claim 3, characterized in that: The cover body comprises a cover body and an extension structure. The connection hole is arranged on the cover body. The extension structure extends from the edge of the connection hole along the penetrating direction of the connection hole toward a side away from the body.

5. The terminal junction box according to claim 4, characterized in that: The base is provided with a groove, the groove surrounds the conductive column body, the sealing ring is accommodated in the groove, and the extension structure extends into the groove and is gap-matched with the side wall of the groove.

6. The terminal junction box according to claim 5, characterized in that: One end of the conductive column body away from the base passes through the connecting hole, and when the extension structure contacts the bottom wall of the groove, in the axial direction of the conductive column body, the minimum distance between the end of the conductive column body passing through the connecting hole and the edge of the connecting hole is greater than or equal to 0.3 mm.

7. The terminal junction box according to any one of claims 1 to 5, characterized in that: The terminal junction box also includes a terminal and a fastener, wherein the fastener is located on a side of the cover body away from the box body, the fastener and the conductive column are detachably connected, and a mounting hole is provided at one end of the terminal, and one of the fastener and the conductive column passes through the mounting hole.

8. The terminal junction box according to claim 7, characterized in that: The fastener includes a threaded column, and the conductive column includes a threaded hole threadedly matched with the threaded column, or the fastener includes a threaded hole, and the conductive column includes a threaded column threadedly matched with the threaded hole.

9. The terminal junction box according to claim 8, characterized in that: A limiting groove is provided on one side of the cover body away from the box body, and at least part of the terminal is accommodated in the limiting groove. The limiting groove is used to limit the terminal on a plane perpendicular to the penetrating direction of the connecting hole.

10. The terminal junction box according to claim 9, characterized in that: A convex strip is provided on the side wall of the limiting groove, and the extension direction of the convex strip is parallel to or inclined with the penetration direction of the connecting hole. In the penetration direction of the connecting hole, the convex strip gradually becomes thicker from the bottom wall of the limiting groove to the opening of the limiting groove.

Images