Wire pressing structure and charging gun equipped with same

Abstract

The utility model relates to the technical field of charging equipment, and provides a wire pressing structure and a charging gun equipped with the same. The wire pressing structure is used for being connected with a gun shell of a charging gun and comprises a first wire pressing shell and a second wire pressing shell. The first wire pressing shell comprises a sleeve part and a wire pressing part arranged at one end of the sleeve part, and the sleeve part is provided with a barrel cavity penetrating in the axial direction of the sleeve part. The second wire pressing shell is detachably connected to the first wire pressing shell, a wire pressing cavity is defined by the second wire pressing shell and the wire pressing part, and the wire pressing cavity is communicated with the cylinder cavity. At least the outer contour of the projection of the sleeve part in the axial direction of the sleeve cavity is arranged in a special shape. According to the wire pressing structure provided by the invention, the special-shaped device on the wire pressing structure is matched with the gun shell of the charging gun, so that the wall thickness reduction and the step end part caused by prefabricated threads are eliminated, the uneven stress is relieved, and the assembly strength and reliability are improved; moreover, the connection reliability with the cable is improved.

Description

Technical Field

[0001] This application relates to the field of charging equipment technology, and in particular to a wire pressing structure and a charging gun equipped with it. Background Technology

[0002] The charging gun is a key component in the charging system of new energy vehicles, used to connect electric vehicles to charging piles and provide power to the vehicle's battery. The charging gun connects to the charging pile via a cable, therefore the assembly reliability of the cable is extremely important.

[0003] In related technologies, the charging gun typically has external threads on its casing, a clamp sleeve attached to the cable, and an internal thread on the clamp body. The clamp body passes through the cable and connects to the external threads on the cavity to achieve a locking and fixing function. However, to accommodate the threaded connection between the clamp body and the casing, pre-drilled threads are required on both the clamp body and the casing, inevitably resulting in thinner walls and stepped ends. This leads to uneven stress distribution, easily causing stress concentration and ultimately reducing the strength of the casing. Utility Model Content

[0004] Therefore, it is necessary to provide a wire pressing structure that utilizes its irregular shape to adapt to the charging gun housing, eliminating the wall thickness reduction and stepped ends caused by pre-made threads, thereby alleviating uneven stress, improving assembly strength and reliability; and improving the reliability of connection with cables.

[0005] A wire clamping structure is provided for connecting a charging gun housing and includes a first wire clamping shell and a second wire clamping shell. The first wire clamping shell includes a sleeve portion and a wire clamping portion disposed at one end of the sleeve portion. The sleeve portion has a cylindrical cavity extending through its own axial direction. The second wire clamping shell is detachably connected to the first wire clamping shell and together with the wire clamping portion forms a wire clamping cavity, which communicates with the cylindrical cavity. At least the outer contour of the sleeve portion along the axial direction of the cylindrical cavity is irregularly shaped.

[0006] Understandably, the sleeve can be directly fitted onto the outside of the cable, thus serving to house and constrain it. This, combined with the assembly of the pressure fitting and the second pressure housing, effectively increases the assembly area between the pressure fitting structure and the cable, improving connection reliability. Due to the irregular shape of the sleeve, not only is the contact area between the sleeve and the gun housing increased, but the irregular shape also limits the rotation of the sleeve relative to the gun housing around the cylinder axis, further improving the connection reliability between the pressure fitting structure and the gun housing. Simultaneously, this design eliminates the need for threaded structures in the fitting portion between the gun housing and the sleeve, thus not affecting the gun housing's wall thickness and eliminating stepped ends. This mitigates the uneven stress on the gun housing caused by stepped structures, increasing the structural strength of the gun housing and consequently improving assembly strength and reliability.

[0007] In some embodiments, the sleeve portion includes a cylinder surrounding a cavity and an irregularly shaped body surrounding the outer periphery of the cylinder, the irregularly shaped body having irregularly shaped protrusions protruding radially outward along the cavity.

[0008] In some embodiments, the sleeve portion and the pressure line portion are integrally formed, and the cylinder and the irregular body are integrally formed.

[0009] In some embodiments, the first pressure shell has an insertion groove on its outer periphery, and the groove opening is arranged along the axial direction of the cylinder cavity toward the side away from the second pressure shell. The insertion groove is used for insertion and engagement of the gun shell end.

[0010] In some embodiments, the inner side of the pressure wire portion and / or the inner side of the second pressure wire housing are provided with a plurality of spaced pressure protrusions.

[0011] In some embodiments, one of the pressure part and the second pressure shell is provided with a positioning post and the other is provided with a positioning groove, and the positioning post and the positioning groove are inserted into each other.

[0012] In some embodiments, one of the first and second wire pressing shells is provided with a locking hole, and the wire pressing structure further includes a locking member that passes through the locking hole and is detachably connected to the other for locking the second wire pressing shell to the first wire pressing shell.

[0013] In some embodiments, the locking hole includes a first locking hole and a second locking hole, which are arranged at an angle and spaced apart, and the first locking hole and the second locking hole are respectively provided with the locking member; wherein, the first locking hole is provided on the periphery of the pressure wire portion or the periphery of the second pressure wire shell, and the second locking hole is provided on the end of the second pressure wire shell.

[0014] This application also provides a charging gun, including a gun housing and the aforementioned wire pressing structure; the gun housing surrounds an assembly cavity, and at least a sleeve portion of the wire pressing structure is inserted into the assembly cavity and connected to the gun housing; wherein the cross-section of the assembly cavity is irregularly shaped to fit the sleeve portion.

[0015] It is understandable that using irregular shapes improves the assembly reliability of the pressure wire structure and the gun case. Furthermore, because the sleeve is inserted into the assembly cavity of the gun case, the area of ​​the pressure wire structure exposed on the outside is reduced, which reduces the interference of other structures on the pressure wire structure and further improves the assembly reliability.

[0016] In some embodiments, the assembly cavity includes a shaped section and a sealing section connected to one end of the shaped section away from the pressure wire structure. The shaped section is plugged into the pressure wire structure. The charging gun also includes a sealing ring that can be pressed between the sealing section and the cable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a partial schematic diagram of a charging gun provided in one embodiment of this application;

[0019] Figure 2 This is a first schematic diagram of a first pressure shell in a pressure structure provided in an embodiment of this application;

[0020] Figure 3 This is a second schematic diagram of the first pressure shell in a pressure structure provided in an embodiment of this application;

[0021] Figure 4 A third schematic diagram of the first pressure shell in a pressure structure provided in an embodiment of this application;

[0022] Figure 5 This is a top view of a pressure line structure provided in an embodiment of this application;

[0023] Figure 6 This is a first schematic diagram of the second pressure shell in a pressure structure provided in an embodiment of this application;

[0024] Figure 7 This is a second schematic diagram of the second pressure shell in a pressure structure provided in an embodiment of this application;

[0025] Figure 8 A partial cross-sectional view of a charging gun provided in an embodiment of this application;

[0026] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0027] Figure 10 A partial cross-sectional view of a charging gun provided in another embodiment of this application.

[0028] Reference numerals: 100, wire pressing structure; 110, first wire pressing shell; 111, sleeve part; 112, wire pressing part; 113, assembly protrusion; 120, second wire pressing shell; 121, second assembly surface; 130, pressing protrusion; 141, positioning post; 142, positioning groove; 151, locking hole; 200, cable; 300, gun shell; 310, assembly cavity; 311, sealing section; 312, irregular section; 320, notch; 400, sealing ring; 500, fastener; 1001, wire pressing cavity; 1110, cylindrical cavity; 1111, cylinder; 1112, irregular body; 1113, assembly plane; 1114, assembly hole; 1121, first assembly surface; 1131, insertion groove; 1511, first locking hole; 1512, second locking hole; 1521, first threaded hole. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when a component is referred to as being "fixed to" or "attached to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0034] like Figure 1 As shown, one embodiment of this application provides a wire clamping structure 100 for connecting with the gun housing 300 and the cable 200 in the charging gun, thereby ensuring the assembly reliability between the cable 200 and the gun housing 300, avoiding the problem of the cable 200 becoming loose due to dragging or other operations during the charging process, and thus improving the safety of use.

[0035] Please see Figure 1 , Figure 2 , Figure 6 and Figure 9 In some embodiments, the wire clamping structure 100 includes a first wire clamping shell 110 and a second wire clamping shell 120, which are detachably connected to each other for constraining the cable 200. Specifically, the first wire clamping shell 110 includes a sleeve portion 111 and a wire clamping portion 112 disposed at one end of the sleeve portion 111. The sleeve portion 111 has a cylindrical cavity 1110 extending through its own axial direction. The second wire clamping shell 120 is detachably connected to the first wire clamping shell 110 and together with the wire clamping portion 112, forms a wire clamping cavity 1001, which communicates with the cylindrical cavity 1110. At least the outer contour of the sleeve portion 111 projected along the axial direction of the cylindrical cavity 1110 is irregularly shaped.

[0036] In practical use, the first clamping shell 110 is directly fitted onto the outside of the cable 200 using its sleeve portion 111, which first serves to store and constrain the cable 200. Then, the second clamping shell 120 is aligned with the clamping portion 112 and connected to the first clamping shell 110. The second clamping shell 120 and the clamping portion 112 work together to tighten the cable 200. After the clamping structure 100 is secured to the cable 200, the end of the cable 200 connected to the clamping structure 100 is inserted into the charging gun housing 300, fixing the clamping structure 100 to the housing 300. In this way, the cable 200 and the housing 300 are connected into a single structure.

[0037] In this process, the sleeve portion 111 increases the contact area between the wire clamping structure 100 and the cable 200, and between the wire clamping structure 100 and the gun housing 300, thereby improving the connection reliability. Specifically, the contact area between the wire clamping structure 100 and the cable 200 includes the inner wall of the sleeve portion 111 and the second wire clamping shell 120 and the wire clamping portion 112 that form the wire clamping cavity 1001; and the contact area between the wire clamping structure 100 and the gun housing 300 can be the outer wall of the sleeve portion 111 and the second wire clamping shell 120 and the wire clamping portion 112, or it can be only the outer wall of the sleeve portion 111. Meanwhile, compared to a direct cylindrical fit, the irregular shape of the sleeve portion 111 along the axial projection of the outer contour of the cavity 1110 not only increases the contact area between the sleeve portion 111 and the gun case 300, but also limits the rotation of the sleeve portion 111 relative to the gun case 300 around the axis of the cavity 1110, thereby improving the connection reliability between the crimping structure 100 and the gun case 300. Furthermore, this design eliminates the need for threaded structures in the fitting parts of the gun case 300 and the sleeve portion 111, thus not affecting the wall thickness of the gun case 300 and eliminating stepped ends. This mitigates the uneven stress distribution on the gun case 300 caused by stepped structures, improving the structural strength of the gun case 300 and enhancing assembly strength and reliability. In addition, the irregular shape of at least the sleeve portion 111 also increases the reliability of the crimping structure 100 when held by the operator.

[0038] Alternatively, after the second pressure shell 120 and the first pressure shell 110 are connected into an integral structure, the outer contour of the pressure structure 100 along the axial direction of the cylinder cavity 1110 may be irregularly shaped. Or, only the sleeve portion 111 may be irregularly shaped along the axial direction of the cylinder cavity 1110.

[0039] Please see Figure 1 , Figure 8 , Figure 9 and Figure 10In some other embodiments, this application also provides a charging gun, including a gun housing 300 and the aforementioned wire pressing structure 100. The gun housing 300 surrounds an assembly cavity 310, and at least a sleeve portion 111 of the wire pressing structure 100 is inserted into the assembly cavity 310 and connected to the gun housing 300. The assembly cavity 310 has a cross-section that is irregularly shaped to fit the sleeve portion 111.

[0040] It is understandable that because the gun casing in the relevant technology has external threads, the cable clamp body is actually assembled on the outside of the gun casing. This makes the cable clamp body prone to collision with the external structure. Moreover, the threaded connection method makes the cable clamp body prone to loosening and other problems, which in turn affects the reliability of the cable connection.

[0041] Therefore, in the embodiments of this application, it is precisely because of the irregular shape of at least the sleeve portion 111 and the insertion fit of the gun case 300 that at least a portion of the sleeve portion 111 can be accommodated inside the gun case 300, satisfying the semi-concealed assembly of the pressure wire structure 100 relative to the gun case 300, thereby reducing the area of ​​the pressure wire structure 100 exposed on the outside, reducing the interference of other structures on the pressure wire structure 100, and further improving the assembly reliability.

[0042] like Figure 10 As shown, when the outer contour of the pressure line structure 100 along the axial direction of the cylinder cavity 1110 is irregularly shaped, the pressure line structure 100 can be fully inserted into the assembly cavity 310 as a whole, which not only increases the assembly area, but also meets the requirements of a fully concealed device, further improving the assembly reliability.

[0043] Please see Figure 2 , Figure 4 , Figure 5 and Figure 9 In some embodiments, the sleeve portion 111 includes a cylinder 1111 surrounding a cavity 1110 and an irregularly shaped body 1112 surrounding the outer periphery of the cylinder 1111. It is understood that the cylinder 1111 is used to surround the cylindrical cavity 1110, facilitating compatibility with the cable 200 and ensuring the structural strength of the sleeve portion 111 itself. Furthermore, the irregularly shaped body 1112 allows the outer contour of the sleeve portion 111 to be irregularly shaped, facilitating assembly with the gun housing 300. Moreover, by dividing the sleeve portion 111 into the cylinder 1111 and the irregularly shaped body 1112, it is ensured that the fit between the sleeve portion 111 and the cable 200, and the fit between the sleeve portion 111 and the gun housing 300, do not interfere with each other, and it facilitates the use of irregularly shaped bodies 1112 of different shapes, improving operational flexibility.

[0044] Furthermore, the irregularly shaped body 1112 has an irregularly shaped protrusion that extends radially outward along the cylindrical cavity 1110. In other words, by utilizing the irregularly shaped protrusion, the sleeve portion 111 has a radially outward protruding portion. When the assembly cavity 310 is adapted to it, the irregularly shaped protrusion can also serve as a guide and positioning element during assembly, improving assembly reliability and preventing misalignment problems during assembly. Simultaneously, the irregularly shaped protrusion can also distribute assembly stress, reduce wear caused by long-term use, and extend the service life of the charging gun.

[0045] In some specific embodiments, the irregular body 1112 has two irregularly shaped protrusions arranged circumferentially along the cylindrical cavity 1110. The projected outer contours of the two irregularly shaped protrusions along the axial direction of the cylindrical cavity 1110 are both arc-shaped and smoothly transition at their facing points to ensure that the outer wall surface of the irregular body 1112 is smooth. The irregular body 1112 may be arranged in an arc shape at the smooth transition point between the two irregularly shaped protrusions to match the cylinder 1111.

[0046] Alternatively, the irregular body 1112 may also have an irregularly shaped groove recessed radially inward along the cylindrical cavity 1110, and a corresponding protrusion is provided on the assembly cavity 310. It is sufficient that the irregular shape allows for the assembly of the pressure wire structure 100 and the gun housing 300.

[0047] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the cylinder 1111 and the irregular body 1112 are integrally formed. That is, because the cylinder 1111 and the irregular body 1112 are integrally formed, the strength of their fit is guaranteed, which not only facilitates manufacturing but also avoids loosening or breakage of the connection due to long-term use or external forces. Furthermore, the integral forming design also helps reduce errors during assembly, improving the overall accuracy and stability of the charging gun.

[0048] Alternatively, the cylindrical body 1111 can be separately molded from the irregular body 1112 and then connected by snap-fit ​​or screws. This design facilitates the replacement of the irregular body 1112, especially when the irregular body 1112 is damaged or needs to be adapted to different gun housings 300, improving usability and extending service life.

[0049] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the sleeve portion 111 and the pressure crease portion 112 are integrally formed. This arrangement increases the connection strength between the sleeve portion 111 and the pressure crease portion 112 and reduces the risk of them coming loose. The sleeve portion 111 and the pressure crease portion 112 can be integrally injection molded. Of course, the aforementioned cylindrical body 1111 and irregularly shaped body 1112 can also be integrally injection molded.

[0050] Please see Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 In some embodiments, the first pressure housing 110 has an insertion groove 1131 on its outer periphery. The opening of the insertion groove 1131 is oriented axially away from the second pressure housing 120 along the cylindrical cavity 1110. The insertion groove 1131 is used for insertion and engagement with the end of the gun housing 300. That is, by utilizing the insertion and engagement between the end of the gun housing 300 and the insertion groove 1131, the assembly of the pressure structure 100 and the gun housing 300 can also be limited. On this basis, since at least a portion of the sleeve portion 111 is inserted into the assembly cavity 310 of the gun housing 300, the setting of the insertion groove 1131 causes a portion of the pressure structure 100 to still surround the outer side of the end of the gun housing 300, thus increasing the assembly area of ​​the pressure structure 100 and the gun housing 300 and further improving the assembly reliability.

[0051] In this embodiment, at the junction of the sleeve portion 111 and the pressure portion 112, the pressure structure 100 has a mounting protrusion 113 protruding radially outward along the cylinder cavity 1110. The mounting protrusion 113 is recessed at one end of the cylinder cavity 1110 away from the pressure portion 112, forming an insertion groove 1131. The groove wall of the insertion groove 1131 is adapted to the end of the gun housing 300.

[0052] like Figure 2 and Figure 9 As shown, the end of the gun case 300 is further provided with a notch 320 that is recessed inward along its own radial direction. When the end of the gun case 300 is inserted into the insertion groove 1131, the outer wall of the gun case 300 is basically flush with the outer wall of the mounting protrusion 113. The outer diameter of the mounting protrusion 113 is basically the same as the outer diameter of the pressure part 112. Of course, in order to facilitate insertion and mating, a rounded corner can be provided at the end of the gun case 300 or at the opening of the insertion groove 1131 to serve as a guide for insertion.

[0053] In some specific embodiments, the cross-section of the mounting protrusion 113 is irregularly shaped to match the sleeve portion 111, and the cross-section of the cavity end is also irregularly shaped to match it. The mounting protrusion 113 is integrally injection molded with the sleeve portion 111 and the pressure line portion 112.

[0054] Please see Figure 3 , Figure 6 and Figure 9In some embodiments, multiple spaced-apart pressing protrusions 130 are provided on the inner side of the pressing portion 112 and the inner side of the second pressing shell 120. That is, the multiple pressing protrusions 130 increase the roughness of the pressing portion 112 and the second pressing shell 120 towards the cable 200, thereby increasing the friction during assembly with the cable 200 and further increasing connection reliability. In actual use, after the second pressing shell 120 is connected to the first pressing shell 110, each pressing protrusion 130 can press firmly against the outside of the cable 200, thus ensuring that the cable 200 can be securely fixed inside the gun housing 300. This not only improves the connection stability of the wire but also effectively prevents the wire from loosening or falling off during use.

[0055] The pressing protrusions 130 can be arranged in a square shape, or in a wave shape, spiral shape, etc., as long as they can increase the reliability of the connection with the cable 200.

[0056] Alternatively, only the inner side of the pressing part 112 may be provided with a plurality of spaced pressing protrusions 130, or only the inner side of the second pressing shell 120 may be provided with a plurality of spaced pressing protrusions 130.

[0057] It should be noted that the inner side of the wire clamping part 112 and the inner side of the second wire clamping shell 120 are both facing the cable 200.

[0058] Please see Figure 3 , Figure 6 and Figure 7 In some embodiments, one of the crimping portion 112 and the second crimping shell 120 is provided with a positioning post 141, and the other is provided with a positioning groove 142. The positioning post 141 and the positioning groove 142 are interlocked. That is, by utilizing the interlocking of the positioning post 141 and the positioning groove 142, rapid positioning and connection between the crimping portion 112 and the second crimping shell 120 are achieved, avoiding misalignment of the crimping portion 112 and the second crimping shell 120 during the connection process, further improving assembly efficiency, and thus ensuring the stability and reliability of the crimping structure 100.

[0059] Please see Figure 3 , Figure 6 , Figure 7 and Figure 9In some specific embodiments, the crimping cavity 1001 formed by the crimping portion 112 and the crimping shell 120 is cylindrically arranged to fit the cylindrical cavity 1110, with the crimping portion 112 and the crimping shell 120 each being half of a cylinder. Therefore, the crimping portion 112 has a first mounting surface 1121 on the side radially towards the second crimping shell 120 along the cylindrical cavity 1110, and the second crimping shell 120 has a second mounting surface 121 on the side radially towards the crimping portion 112 along the cylindrical cavity 1110. The first mounting surface 1121 has a recessed positioning groove 142, and the second mounting surface 121 has a protruding positioning post 141 to satisfy the insertion and engagement of the positioning post 141 and the positioning groove 142. Alternatively, the first mounting surface 1121 may have a protruding positioning post 141, and the second mounting surface 121 may have a recessed positioning groove 142. Furthermore, the number of positioning posts 141 can be one or two, and the number of positioning grooves 142 can be adapted accordingly. However, neither should be too numerous, otherwise stress concentration problems will occur, affecting the structural strength.

[0060] Please see Figure 1 , Figure 3 , Figure 6 and Figure 7 In some embodiments, the wire clamping structure 100 further includes a locking member for locking the second wire clamping shell 120 to the first wire clamping shell 110. That is, based on the aforementioned use of the positioning post 141 and positioning groove 142 to satisfy the positioning and assembly of the wire clamping part 112 and the second wire clamping shell 120, the locking member can also be used to lock the second wire clamping shell 120 relative to the first wire clamping shell 110, thereby satisfying the wire clamping requirements of the cable 200 and maintaining higher connection reliability.

[0061] The locking element can be a screw or a snap-fit ​​structure, as long as it can lock the first wire clamping shell 110 and the second wire clamping shell 120.

[0062] In some specific embodiments, one of the first wire clamping housing 110 and the second wire clamping housing 120 is provided with a locking hole 151. A locking member passes through the locking hole 151 and is detachably connected to the other, used to lock the second wire clamping housing 120 to the first wire clamping housing 110. That is, the locking member is a screw, which facilitates disassembly while ensuring connection strength. For example, the first wire clamping housing 110 may be provided with a locking hole 151, and the locking member passes through the first wire clamping housing 110 and is threadedly connected to the second wire clamping housing 120. Alternatively, the second wire clamping housing 120 may be provided with a locking hole 151, and the locking member passes through the locking hole 151 and is threadedly connected to the first wire clamping housing 110. The locking hole 151 is a round hole.

[0063] It is understandable that when one of the first pressure housing 110 and the second pressure housing 120 is provided with a locking hole 151, the other is provided with a threaded hole, which is conducive to threaded connection with the locking member.

[0064] Please continue reading. Figure 1 , Figure 3 , Figure 6 and Figure 7 In some embodiments, the locking hole 151 includes a first locking hole 1511 and a second locking hole 1512, which are arranged at an angle and spaced apart; that is, the axial direction of the first locking hole 1511 and the axial direction of the second locking hole 1512 are set at an angle. Both the first locking hole 1511 and the second locking hole 1512 are provided with corresponding locking elements. Specifically, the first locking hole 1511 is located on the periphery of the wire pressing portion 112 or the periphery of the second wire pressing shell 120, and the second locking hole 1512 is located at the end of the second wire pressing shell 120.

[0065] This configuration further enhances the connection reliability of the first wire clamping shell 110 and the second wire clamping shell 120, thereby increasing the squeezing effect on the cable 200 and improving the connection reliability with the cable 200. Taking the example that both the first locking hole 1511 and the second locking hole 1512 are located in the second wire clamping shell 120, the first locking hole 1511 is staggered from the positioning post 141, the wire clamping part 112 has a first threaded hole 1521 adapted to the first locking hole 1511 at the first assembly surface 1121, and the sleeve part 111 has a second threaded hole adapted to the second locking hole 1512 at one end of the sleeve part 1110 axially toward the wire clamping part 112. One locking member passes through the first locking hole 1511 and is threadedly connected to the hole wall of the first threaded hole 1521, and the other locking member passes through the second locking hole 1512 and is threadedly connected to the hole wall of the second threaded hole.

[0066] The first locking hole 1511 and the second locking hole 1512 are each provided in twos and arranged at intervals.

[0067] Please see Figure 2 , Figure 3 , Figure 9 and Figure 10 In actual use, the sleeve portion 111 is also provided with a mounting hole 1114 for connection with the gun housing 300. The fastener 500 passes through the gun housing 300 and is threadedly connected to the wall of the mounting hole 1114. The outer wall of the sleeve portion 111 has a mounting plane 1113, and the mounting hole 1114 is located at the mounting plane 1113. The mounting plane 1113 contacts and presses against the cavity wall of the mounting cavity 310 of the gun housing 300, improving connection reliability. Two fasteners 500 can be provided, spaced apart along the axial direction of the sleeve cavity 1110 to improve connection reliability; and the mutual constraint of the two fasteners 500 prevents the sleeve portion 111 from rotating relative to the gun housing 300.

[0068] Please see Figure 1 , Figure 9 and Figure 10In some embodiments, the assembly cavity 310 includes a shaped section 312 and a sealing section 311 connected to the shaped section 312. The sealing section 311 is located on the side of the shaped section 312 facing away from the wire pressing structure 100. The shaped section 312 is inserted into the wire pressing structure 100 (or simply the sleeve portion 111). The charging gun also includes a sealing ring 400, which can be pressed between the sealing section 311 and the cable 200. It is understood that since charging-related electronic components are also housed inside the gun housing 300, the sealing ring 400 is used to ensure the airtightness of the gun housing 300 and reduce damage to the electronic components. The outer periphery of the sealing ring 400 has rough textures to press against the cavity wall of the assembly cavity 310 at the sealing section 311, further improving the airtightness. In addition, the cross-section of the part of the gun housing 300 used to connect the cable 200 can also be shaped to facilitate operation by the operator.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A crimping structure, characterized in that, The gun housing (300) for connecting the charging gun, the wire clamping structure (100) includes: The first pressure shell (110) includes a sleeve portion (111) and a pressure portion (112) provided at one end of the sleeve portion (111). The sleeve portion (111) has a cylindrical cavity (1110) extending through itself along its axial direction. The second pressure shell (120) is detachably connected to the first pressure shell (110) and together with the pressure part (112) forms a pressure cavity (1001), which is connected to the cylindrical cavity (1110). Among them, at least the outer contour of the sleeve portion (111) along the axial direction of the cylinder cavity (1110) is irregularly shaped.

2. The pressure line structure according to claim 1, characterized in that, The sleeve portion (111) includes a cylinder (1111) surrounding a cylindrical cavity (1110) and an irregular body (1112) surrounding the outer periphery of the cylinder (1111), the irregular body (1112) having irregular protrusions that bulge outward along the radial direction of the cylindrical cavity (1110).

3. The pressure line structure according to claim 2, characterized in that, The sleeve portion (111) and the pressure portion (112) are integrally formed, and the cylinder (1111) and the irregular body (1112) are integrally formed.

4. The pressure line structure according to claim 1, characterized in that, The first pressure shell (110) has an insertion groove (1131) on its outer periphery. The groove opening of the insertion groove (1131) is arranged along the axial direction of the cylinder cavity (1110) towards the side away from the second pressure shell (120). The insertion groove (1131) is used for insertion and engagement of the gun shell end.

5. The pressure line structure according to claim 1, characterized in that, The inner side of the pressure part (112) and / or the inner side of the second pressure shell (120) are provided with a plurality of spaced pressure protrusions (130).

6. The pressure line structure according to claim 1, characterized in that, One of the pressure part (112) and the second pressure shell (120) is provided with a positioning post (141) and the other is provided with a positioning groove (142), and the positioning post (141) and the positioning groove (142) are inserted into each other.

7. The pressure line structure according to claim 1 or 6, characterized in that, One of the first wire pressing shell (110) and the second wire pressing shell (120) is provided with a locking hole (151). The wire pressing structure (100) also includes a locking member, which passes through the locking hole (151) and is detachably connected to the other for locking the second wire pressing shell (120) and the first wire pressing shell (110).

8. The pressure line structure according to claim 7, characterized in that, The locking hole (151) includes a first locking hole (1511) and a second locking hole (1512), which are arranged at an angle and at intervals. The first locking hole (1511) and the second locking hole (1512) are respectively provided with the locking element. The first locking hole (1511) is located on the periphery of the pressure wire portion (112) or the periphery of the second pressure wire shell (120), and the second locking hole (1512) is located at the end of the second pressure wire shell (120).

9. A charging gun, characterized in that, The charging gun includes: The gun casing (300) is surrounded by an assembly cavity (310). The pressure wire structure according to any one of claims 1 to 8, wherein at least the sleeve portion (111) of the pressure wire structure (100) is inserted into the assembly cavity (310) and connected to the gun shell (300); The cross-section of the assembly cavity (310) is irregularly shaped to match the sleeve portion (111).

10. The charging gun according to claim 9, characterized in that, The assembly cavity (310) includes a shaped section (312) and a sealing section (311) connected to the end of the shaped section (312) away from the pressure wire structure (100). The shaped section (312) is plugged into the pressure wire structure (100). The charging gun also includes a sealing ring (400), which can be pressed between the sealing section (311) and the cable (200).

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