Connector and shield therefor

Abstract

This utility model relates to the technical field of conductive connection devices, specifically to a connector and its shielding cover. The connector's shielding cover has at least one wire-passing hole. The opening of the wire-passing hole has a set of spring claws for engaging with a crimping sleeve. Each spring claw is spaced around the center line of the wire-passing hole in a circumferential direction. The spring claws extend along the center line of the wire-passing hole and have abutting portions for elastically pressing against the crimping sleeve. The abutting portions of each spring claw are located on at least two circumferences along the center line of the wire-passing hole. During crimping sleeve installation, each spring claw contacts different positions axially with the crimping sleeve, not simultaneously generating resistance, thereby reducing the resistance encountered during installation, resulting in gentler installation force and improved ease of operation for workers.

Description

Technical Field

[0001] This utility model relates to the field of conductive connection device technology, specifically to a connector and its shielding cover. Background Technology

[0002] High-voltage connectors are required for the connection between high-voltage systems such as motors, electronic controls, and DC-DC converters in new energy vehicles. High-voltage connectors need to prevent electromagnetic interference leakage during current transmission, so they usually have a shielding structure inside.

[0003] The basic structure of existing new energy vehicle electrical connectors can be found in the connector disclosed in Chinese Utility Model Patent No. CN213989365U. This connector includes a plug assembly, which is a plug connector. The plug assembly includes a plug housing, a plug core, pins, a plug shield, and a shielding ring. The pins form the contact element and are crimped with the core wire of the cable. The shielding ring is crimped with the shielding layer of the cable, forming a crimping sleeve. The pins are installed in the plug core, which forms the inner housing. The shield is fitted onto the inner housing, and the shielding ring extends into the shield. The plug housing forms the outer housing. The contact element, crimping sleeve, cable, inner housing, and shield are all installed in the outer housing. A locking cap is provided at the tail of the outer housing to generate a pushing force on the crimping sleeve to prevent it from slipping out. After the plug connector is plugged into the adapter socket connector, the head of the shield makes contact with the shielding structure of the adapter socket connector.

[0004] The shielding cover achieves elastic contact with the crimping sleeve through a spring claw at its tail end. For ease of understanding, it is combined with... Figure 1 , Figure 2 , Figure 3 This paper introduces the existing shielding structure. Figure 1 The shielding cover is suitable for connecting two-core connectors with two cables. The shielding cover 1 includes a cover body 11 and spring claws 12. The cover body 11 is used to fit on the corresponding inner shell 2. The inner shell 2 is used to install the contact and the cable extends into the inner shell. The tail end side wall of the cover body 11 is provided with inwardly bent spring claws 12. The shielding cover is integrally formed by bending sheet material. After bending, the spring claws 12 extend into the inner cavity of the cover body 11. There are two sets of spring claws. One set of spring claws corresponds to one cable. The spring claws 12 in the same set are spaced apart in the circumferential direction. The area enclosed by a circle of spring claws in the same set is for the cable to pass through. The contact section of the crimping sleeve 3 used to crimp the cable shielding layer extends into the space enclosed by a circle of spring claws 12. The spring claws press against the outer circumferential surface of the contact section of the crimping sleeve 3 to form contact, so that the cable shielding layer is connected to the shielding cover through the crimping sleeve.

[0005] Figure 2To achieve a flat, unbent state for the spring claw, the spring claw 12 is formed by punching and bending at the corresponding parts of the sheet. After punching, a slit 15 is formed between two adjacent parts that form the spring claw. Then, two bends are performed. The first bend is at the end bend 14 of the spring claw 12, and the second bend is at the root bend 13 of the spring claw 12. The root of the spring claw is integrally connected to the cover body, and the connection part is the root bend 13. The end of the spring claw is at the overhanging end. After the shielding cover is bent and formed, the spring claws of different parts of the sheet correspond to each other to form a circumferential distribution of each group of spring claws 12. After two bends, the spring claws become a state of extending inward into the cover body 11. The end bend 14 is bent so that the end edge is raised away from the center of the area enclosed by the same group of spring claws. The end bend 14 is the part of the spring claw 12 closest to the center of the area enclosed by the same group of spring claws. After the crimping sleeve 3 is inserted into the area enclosed by the same group of spring claws 12, the end bend 14 and the crimping sleeve 3 form a top pressure contact.

[0006] In the structure of a traditional shielding cover, the overhang lengths of each spring claw are equal and they are radially and centrally symmetrically distributed. The portion between the root bend and the end bend of the spring claw is defined as the main body segment, and the portion between the end bend and the very edge of the spring claw is defined as the end segment. The spring claw has a set overall length requirement, and the lengths of the main body segment and end segment also have requirements. These lengths refer to the overall overhang length of the spring claw, and the width of the end bend is also required to ensure reliable contact with the crimping sleeve. When forming the spring claw, considering the width of the end bend and the length of the end segment, a portion of the tip near the center of the spring claw needs to be cut off to create a flat-head structure.

[0007] Since each spring claw is the same size and has the same end bend, the end bends of all spring claws in the same group are on the same circumference and at the same height. The end bend is the part of the spring claw that abuts against the crimping sleeve. The distance between the end bend of each spring claw and the inner end of the crimping sleeve is... Figure 3 The E in the same case means that during the crimping process, the contacts on each of the spring claws in the same group contact the crimping sleeve at the same time. This will cause the reaction force from the spring claws to be concentrated in one position during the crimping process, resulting in a large force, making operation difficult and the force not gentle during crimping, making operation inconvenient. Utility Model Content

[0008] The purpose of this utility model is to provide a shielding cover for a connector to solve the problem that the shielding cover of the current connector is subject to greater resistance when the crimp sleeve is inserted into the area enclosed by the various spring claws in the same group, which affects the convenience of worker operation; the purpose of this utility model is also to provide a connector to solve the above problems.

[0009] The technical solution for the connector shielding cover of this utility model is as follows:

[0010] A connector shield has at least one wire passage hole. The opening of the wire passage hole has a set of spring claws for cooperating with a crimping sleeve. Each spring claw is spaced around the center line of the wire passage hole in a circumferential direction. The spring claws extend along the center line of the wire passage hole and have abutting parts for elastically pressing against the crimping sleeve. The abutting parts of each spring claw are located on at least two circumferences in the direction of the center line of the wire passage hole so as to contact different positions in the axial direction of the crimping sleeve when the crimping sleeve is installed.

[0011] Furthermore, the abutting parts are located on different circumferences and the specifications of the spring claws are different. The abutting part is the end bend of the spring claw. The end bend is used to bend the end section of the spring claw relative to its main body section. The root bend of the spring claw is connected to the shield body. The root bend is used to bend the main body section of the spring claw relative to the shield body. The root bend of each spring claw is the same distance from the center of the wire hole. The distance from the end bend to the root bend of spring claws of different specifications is different.

[0012] Furthermore, the spring claws in the same group are arranged symmetrically on the center when flattened, and the amount of material required for forming each spring claw is the same. The positions of the bent parts at the ends of spring claws of different specifications are different in the spring claw overhang direction.

[0013] Furthermore, the overhang lengths of the pawls of different specifications are different, and the extension lines of the two sides of the width direction of each pawl in the same group when unfolded intersect at a point.

[0014] Furthermore, within the same group of different specifications of spring claws, there are long spring claws and short spring claws. The overhang length of the long spring claw is greater than that of the short spring claw. In the same group, the spring claws adjacent to any short spring claw on both sides are long spring claws. The intersection of the extension lines of the adjacent side widths of the long spring claws on both sides is located on the side of the short spring claw between the adjacent long spring claws near the center of the area enclosed by all the spring claws in the same group.

[0015] Furthermore, the intersection of the two extended sides of any long spring claw in the width direction is located on the side away from the long spring claw at the center of the area enclosed by the various spring claws in the same group, and the intersection of the two extended sides of any short spring claw in the width direction is located on the side closer to the short spring claw at the center of the area enclosed by the various spring claws in the same group. When the spring claws are flattened, the slit between two adjacent spring claws gradually narrows from the root to the end of the spring claw.

[0016] Furthermore, the short pawls in the same set of pawls have at least two specifications, and the short pawls of different specifications have different lengths. The long pawls on both sides of any short pawl of a certain specification have the same specifications.

[0017] Furthermore, the end of the pawl has a flat or rounded head structure.

[0018] Furthermore, the spring claws used to contact the same circumference on the crimping sleeve are symmetrically arranged about the center of the wire hole.

[0019] Beneficial effects: This utility model modifies the elements of the connector shielding cover in the prior art by staggering the contact points of the various spring claws in the same group that mate with the crimp sleeve. At least two spring claws in the same group have contact points at different positions in the spring claw overhang direction, resulting in spring claws of different specifications. When the crimp sleeve is installed on the shielding cover, the crimp sleeve first forms a top-pressure contact with a portion of the spring claws, initially experiencing resistance from some of the spring claws. Then, this portion of the spring claws deforms, and as the crimp sleeve continues to be installed, this portion of the spring claws slides and rubs against the circumference of the crimp sleeve. The crimp sleeve then continues to form a top-pressure contact with the remaining spring claws. During the installation process, each spring claw forms contact with the crimp sleeve sequentially and at different positions in the axial direction of the crimp sleeve, rather than simultaneously generating resistance to the crimp sleeve. This reduces the resistance experienced during the installation of the crimp sleeve, resulting in gentler installation force and facilitating worker operation.

[0020] The technical solution of the connector of this utility model is as follows:

[0021] A connector includes an inner housing, a contact element installed in the inner housing, a shielding cover fitted outside the inner housing, and a crimping sleeve for crimping a cable shielding layer and contacting the shielding cover. The shielding cover has at least one cable passage hole, and the opening of the cable passage hole has a set of spring claws for cooperating with the crimping sleeve. Each spring claw is spaced around the center line of the cable passage hole in a circumferential direction. The spring claws extend along the center line of the cable passage hole and have abutting portions for elastically pressing against the crimping sleeve. The abutting portions of each spring claw are located on at least two circumferences in the direction of the center line of the cable passage hole so as to contact different positions in the axial direction of the crimping sleeve when the crimping sleeve is installed.

[0022] Furthermore, the abutting parts are located on different circumferences and the specifications of the spring claws are different. The abutting part is the end bend of the spring claw. The end bend is used to bend the end section of the spring claw relative to its main body section. The root bend of the spring claw is connected to the shield body. The root bend is used to bend the main body section of the spring claw relative to the shield body. The root bend of each spring claw is the same distance from the center of the wire hole. The distance from the end bend to the root bend of spring claws of different specifications is different.

[0023] Furthermore, the spring claws in the same group are arranged symmetrically on the center when flattened, and the amount of material required for forming each spring claw is the same. The positions of the bent parts at the ends of spring claws of different specifications are different in the spring claw overhang direction.

[0024] Furthermore, the overhang lengths of the pawls of different specifications are different, and the extension lines of the two sides of the width direction of each pawl in the same group when unfolded intersect at a point.

[0025] Furthermore, within the same group of different specifications of spring claws, there are long spring claws and short spring claws. The overhang length of the long spring claw is greater than that of the short spring claw. In the same group, the spring claws adjacent to any short spring claw on both sides are long spring claws. The intersection of the extension lines of the adjacent side widths of the long spring claws on both sides is located on the side of the short spring claw between the adjacent long spring claws near the center of the area enclosed by all the spring claws in the same group.

[0026] Furthermore, the intersection of the two extended sides of any long spring claw in the width direction is located on the side away from the long spring claw at the center of the area enclosed by the various spring claws in the same group, and the intersection of the two extended sides of any short spring claw in the width direction is located on the side closer to the short spring claw at the center of the area enclosed by the various spring claws in the same group. When the spring claws are flattened, the slit between two adjacent spring claws gradually narrows from the root to the end of the spring claw.

[0027] Furthermore, the short pawls in the same set of pawls have at least two specifications, and the short pawls of different specifications have different lengths. The long pawls on both sides of any short pawl of a certain specification have the same specifications.

[0028] Furthermore, the end of the pawl has a flat or rounded head structure.

[0029] Furthermore, the spring claws used to contact the same circumference on the crimping sleeve are symmetrically arranged about the center of the wire hole.

[0030] Beneficial effects: This utility model modifies the elements of the connector shielding cover in the prior art by staggering the contact points of the various spring claws in the same group that mate with the crimp sleeve. At least two spring claws in the same group have contact points at different positions in the spring claw overhang direction, resulting in spring claws of different specifications. When the crimp sleeve is installed on the shielding cover, the crimp sleeve first forms a top-pressure contact with a portion of the spring claws, initially experiencing resistance from some of the spring claws. Then, this portion of the spring claws deforms, and as the crimp sleeve continues to be installed, this portion of the spring claws slides and rubs against the circumference of the crimp sleeve. The crimp sleeve then continues to form a top-pressure contact with the remaining spring claws. During the installation process, each spring claw forms contact with the crimp sleeve sequentially and at different positions in the axial direction of the crimp sleeve, rather than simultaneously generating resistance to the crimp sleeve. This reduces the resistance experienced during the installation of the crimp sleeve, resulting in gentler installation force and facilitating worker operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the shielding cover in the background art;

[0032] Figure 2 for Figure 1 A schematic diagram showing the shielding cover's tail claw in a flattened state;

[0033] Figure 3 for Figure 1A schematic diagram of the mating structure of the shielding cover, the crimping sleeve, and the inner shell.

[0034] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the shielding cover of this utility model;

[0035] Figure 5 for Figure 4 A schematic diagram showing the shielding cover's tail claw in a flattened state;

[0036] Figure 6 for Figure 4 A schematic diagram of the mating structure of the shielding cover, the crimping sleeve, and the inner shell.

[0037] Figure 7 This is a schematic diagram of the shielding cover tail claw in a flattened state, according to Embodiment 2 of the present invention.

[0038] Figure 8 for Figure 7 A schematic diagram of the mating structure of the shielding cover, the crimping sleeve, and the inner shell.

[0039] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the shielding cover of this utility model;

[0040] Figure 10 for Figure 9 A schematic diagram showing the shielding cover's tail claw in a flattened state;

[0041] Figure 11 for Figure 9 A schematic diagram of the structure in which the shielding cover, the crimping sleeve, and the inner shell fit together.

[0042] In the diagram: 1. Shielding cover; 11. Cover body; 12. Spring claw; 13. Root bend; 14. End bend; 15. Cut; 2. Inner shell; 21. Contact mounting cavity; 3. Press sleeve. Detailed Implementation

[0043] The basic concept of the connector shield of this utility model is to make each spring claw abut against the crimping sleeve in turn, and to make contact at different positions in the axial direction of the crimping sleeve, so as not to generate resistance to the crimping sleeve at the same time. This can reduce the resistance encountered by the crimping sleeve during installation, and the installation force is gentle, which is conducive to the convenience of workers.

[0044] The technical solution of this utility model will be described in detail below with reference to specific embodiments.

[0045] Embodiment 1 of the connector shield of this utility model:

[0046] like Figure 4 , Figure 5 , Figure 6As shown, the connector's shield 1 includes a shield body 11 and at least one set of spring claws 12. The shield body 11 is used to fit onto the connector's inner housing 2, and the same set of spring claws 12 is used to abut against the crimping sleeve 3 of the crimped cable. The connector equipped with this shield 1 is a cable connector, which includes contacts, an inner housing 2, a shield 1, a crimping sleeve 3, and an outer housing. The outer housing and contacts are not shown in the figure. The connector's head and tail directions are consistent with the insertion direction. The head end is the insertion end, and the tail end is connected to the cable (not shown in the cable figure). The contact head has a insertion structure for inserting with the adapter connector, and the tail has a crimping structure for crimping the cable core wires. The crimping sleeve 3 is used to crimp the cable's shielding layer, and the contact is installed in the inner housing 2. The shield 1 is a cylindrical structure and fits outside the inner housing 2. The crimping sleeve 3 contacts the shield 1, and the cable's shielding layer is conductive to the shield 1 through the crimping sleeve 3.

[0047] After the cable is wired, the core wire of the cable is crimped and fixed to the contact, and the shielding layer of the cable is crimped and fixed to the crimping sleeve 3. The inner housing 2 is provided with a contact mounting cavity 21 for installing the contact. The core wire of the cable extends into the inner housing 2. The tail side wall of the shielding cover 1 is provided with a cable passage hole for the corresponding cable to pass through. The contact, crimping sleeve 3, cable, inner housing 2, and shielding cover 1 are installed as a whole in the outer housing. A locking cap is connected to the tail of the outer housing. The outer sheath of the cable at the tail of the outer housing is also covered with a sealing body. The sealing body is located on the side of the crimping sleeve 3 away from the connector head. The locking cap can press the sealing body, thereby generating a non-retractable force on the crimping sleeve 3 and maintaining its position. The crimping sleeve 3 contacts the tail of the shielding cover 1. After the connector is inserted with the adapter connector, the head of the shielding cover 1 contacts and conducts with the shielding structure of the adapter connector. The shielding cover 1 can play a role in wrapping and shielding the contact.

[0048] This connector is a dual-core connector for connecting two cables. The inner housing 2 of the connector contains two contacts, and a shield 1 covers these two contacts. The shield 1 has two cable passage holes at its tail. Correspondingly, two sets of spring claws 12 are provided on the shield 1, spaced apart. Each set of spring claws 12 is located around the edge of the opening of a corresponding cable passage hole. The root of the spring claw is integrally connected to the edge of the opening of the cable passage hole. Each spring claw 12 is spaced apart around the center line of the cable passage hole in a circumferential direction. The center line of the cable passage hole is collinear with the center line of the area enclosed by all the spring claws in the same set. Each set of spring claws 12 contacts a crimp sleeve 3 fixed on a cable. Multiple spring claws 12 are in the same set, and each set of spring claws 12 is used to engage with a corresponding crimp sleeve 3. The overhang direction of the spring claw 12 is consistent with the direction in which the crimp sleeve 3 is installed onto the shield 1, and the direction in which the crimp sleeve 3 is installed onto the shield 1 is consistent with the direction of the center line of the cable passage hole. The spring claw 12 has an abutting portion for elastically pressing against the crimp sleeve 3, and the same set of spring claws 12 is connected to the shielding layer of the corresponding cable through the corresponding crimp sleeve 3. In other embodiments, the connector may also be a single-core connector with only one contact, and correspondingly, there is only one set of spring claws on the shield; or the connector may be a multi-core connector with more cables.

[0049] In this embodiment, the abutting portions of at least two spring claws 12 in the same group are located at different positions in the cantilever direction of the spring claw 12, thus staggering the abutting portions of each spring claw 12 in the same group that are used to mate with the insert sleeve of the crimping sleeve 3. The abutting portions of at least two spring claws 12 in the same group are located at different positions in the cantilever direction of the spring claw 12, giving the spring claws 12 different specifications. The abutting portions of each spring claw 12 are located on at least two circumferences in the direction of the center line of the wire hole. This way, when the crimping sleeve 3 is installed on the shielding cover 1, each spring claw 12 in the same group contacts a different position in the axial direction of the crimping sleeve 3. First, the spring pawl 12 forms a top-pressing contact with a portion of the spring pawl 12, and is initially resisted by a portion of the spring pawl 12. Then, this portion of the spring pawl 12 deforms. As the crimping sleeve 3 continues to be installed, this portion of the spring pawl 12 slides and rubs against the circumferential surface of the crimping sleeve 3. The crimping sleeve 3 then continues to form a top-pressing contact with the remaining portion of the spring pawl 12. During the installation of the crimping sleeve 3, each spring pawl 12 abuts against the crimping sleeve 3 in turn, forming contact at different positions in the axial direction of the crimping sleeve 3. They do not generate resistance to the crimping sleeve 3 synchronously, thereby reducing the resistance experienced by the crimping sleeve 3 during installation. The installation force is gentle, which is beneficial to the convenience of worker operation.

[0050] The spring claw 12 is located on the rear sidewall of the cover body 11 and extends inward based on the rear sidewall of the cover body 11. The rear sidewall of the cover body 11 is perpendicular to the connector insertion direction. The spring claw 12 extends into the inner cavity of the cover body 11. The direction in which the crimp sleeve 3 is installed onto the shielding cover 1 is consistent with the direction of the shielding cover 1 from the rear to the head. The crimp sleeve 3 extends into the area enclosed by the same set of spring claws 12, and the outer peripheral surface of the crimp sleeve 3 abuts against the same set of spring claws 12. In other embodiments, the spring claws can also extend outward away from the head of the shielding cover. In this case, the crimp sleeve has a crimping section for crimping the cable shielding layer and a contact section for contacting the spring claws, which are segmented in the axial direction. The contact section of the crimp sleeve is fitted onto the same set of spring claws, and the same set of spring claws abuts against the inner peripheral surface of the contact section of the crimp sleeve.

[0051] The spring claw 12 is integrally connected to the shield body 11. The shield 1 is formed by integrally bending a sheet material. The spring claw 12 is formed by punching and bending at corresponding parts of the sheet material. After punching, a slit 15 is formed between two adjacent parts forming the spring claw 12. The spring claws 12 at different parts of the sheet material are formed correspondingly to each other. Figure 5 The diagram shows the circumferential distribution of each spring claw 12 in the same group. At this time, the spring claw 12 is in a straight state without bending. After bending, the slit 15 between two adjacent spring claws 12 forms a gap between the spring claws 12. Each spring claw 12 in the same group is located on the periphery of the corresponding cable.

[0052] In this embodiment, the spring claw 12 has a curved structure, with a root bending portion 13 and an end bending portion 14. The spring claw 12 is formed by punching and bending a corresponding part of a sheet. After punching, the portion between two adjacent cuts 15 of the sheet is used to form the spring claw 12. This portion is bent twice to form the spring claw 12. The first bend is at the end bending portion 14 at the end of the spring claw 12, and the second bend is at the root bending portion 13 at the root of the spring claw 12. The root of the spring claw 12 is integrally connected to the cover body 11, and the connection part is the root bending portion 13. The end of the spring claw 12 is at the overhanging end. The bending portion is the position where the angle is formed in the thickness direction plane. After the shielding cover 1 is bent and formed, the spring claws 12 at different parts of the sheet correspond to each other to form a circumferential distribution of the same group of spring claws 12. After two bends, the spring claws 12 become a state in which they extend inward into the cover body 11. The end bend portion 14 bends so that the end edge is raised away from the center of the area enclosed by the same group of spring claws 12. The end bend portion 14 is the part of the spring claw 12 closest to the center of the area enclosed by the same group of spring claws 12. After the crimping sleeve 3 is inserted into the area enclosed by the same group of spring claws 12, the end bend portion 14 and the crimping sleeve 3 form a top pressure contact.

[0053] The end bend 14 and the root bend 13 are... Figure 2At the straight line indicated by the corresponding punctuation mark, the portion of the spring claw 12 located between the end bend 14 and the root bend 13 is defined as the main body segment, and the portion of the spring claw 12 located between the root bend 13 and the end edge is defined as the end segment. The end bend 14 is used to bend the end segment of the spring claw 12 relative to its main body segment, and the root bend 13 is used to bend the main body segment of the spring claw 12 relative to the cover body 11. The end bend 14 of the spring claw 12 forms the abutment portion, which reduces friction when the crimping sleeve 3 is inserted. In other embodiments, the spring claw 12 may only have a root bend, with the end edge abutting the crimping sleeve.

[0054] The spring claw 12 has set overall length and width requirements, and the lengths of the main body and end sections also have requirements. These lengths refer to the overall overhang direction of the spring claw 12. Furthermore, the width of the end bend 14 is also required to ensure reliable contact with the crimping sleeve 3. When forming the spring claw 12, considering the width of the end bend 14 and the length of the end section, a portion of the pointed tip near the center of the spring claw 12 needs to be cut off to form a flat-head structure. In other embodiments, the end of the spring claw can also be made into a round-head structure.

[0055] In this embodiment, the various parts of the sheet used to form each spring claw 12 are of the same size. To facilitate understanding of the dimensional relationship, Figure 5 The spring claws 12 are displayed in a flattened state, meaning the bent portions of the spring claws 12 are not bent, consistent with their state before bending after cutting. In this state, the two sides of the spring claws 12 in the thickness direction are flush with the inner and outer sides of the tail sidewall of the cover body 11. At this time, the spring claws 12 in the same group are centrally symmetrically arranged, and each spring claw 12 is the same size without bending, requiring the same amount of material to form each spring claw. The width of the root bending portion 13 of the spring claws 12 is the same, and the width of the end bending portion is the same, while the position of the end bending portion 14 on the spring claws 12 is different. The specifications of the spring claws 12 with the end bending portion 14 at different positions in the overhang direction of the spring claw 12 are different, and the distance from the end bending portion 14 to the root bending portion 13 of the spring claws 12 of different specifications is different, so as to form sequential contact during the installation of the crimping sleeve 3.

[0056] Each of the spring claws 12 that contacts the same circumference on the crimping sleeve 3 is symmetrically arranged about the center of the area enclosed by the spring claws 12 in the same group, so that the force is evenly distributed when the crimping sleeve 3 is inserted, keeping the crimping sleeve 3 centered. Half of the spring claws 12 in the same group are connected to the same circumferential position in the axial direction of the crimping sleeve 3, and the other half are connected to the other circumferential position in the axial direction of the crimping sleeve 3, with the contact parts of each spring claw located on two circumferences. In other embodiments, the spring claws that contact the same circumference on the crimping sleeve may not be centrally symmetrically arranged, and the crimping sleeve may be subjected to eccentric force during insertion, but this will not affect the overall contact effect after installation. In this embodiment, the spring claws 12 come in two specifications. The two specifications of spring claws 12 in the same group are alternately arranged along the circumference. Spring claws 12 of the same specification are centrally symmetrical about the center of this circumference, which is the center of the area enclosed by all the spring claws 12 in the same group. The root bending portion 13 of each spring claw 12 in the same group is equidistant from this center. The extension lines of the two sides of the width direction of each spring claw 12 in the same group in its flattened state intersect at a single point, which is the aforementioned center. When the crimping sleeve 3 is inserted, it first contacts half of the spring claws 12 in the same group. The slit 15 width between adjacent spring claws 12 is uniform, and the slit 15 width meets the requirements of the punching and cutting tool.

[0057] In this embodiment, the spring claw has two specifications. In other embodiments, the spring claw may have three or more specifications, and the bent ends of the spring claws of different specifications are positioned differently in the overhang direction of the spring claw, so that the bent ends of the spring claws in the same group are on three or more circumferences.

[0058] The two specifications of spring claws 12 have different positions of end bending parts 14, resulting in different end segment lengths. Figure 5 One specification of the spring pawl 12 has an end section length of A1, and another specification of the spring pawl 12 has an end section length of A2. A1 is less than A2. The spring pawl 12 corresponding to A1, after bending, becomes... Figure 6 The spring pawl 12 corresponding to size E1 and the spring pawl 12 corresponding to size A2, after being bent, are... Figure 6 The spring claw 12 corresponding to the medium size E2, E1 and E2 are the distances between the end bends 14 of the corresponding spring claw 12 and the inner end of the crimping sleeve 3. During the installation of the crimping sleeve 3, because the sizes of E1 and E2 are different, the contact time between the two specifications of spring claw 12 and the crimping sleeve 3 is also different, which can ensure that the force is gentle during the installation of the crimping sleeve 3.

[0059] However, this arrangement of the pawl 12 also has certain limitations. For example... Figure 6 As shown, the structure employs equal-length spring claws with different bending positions. For the longer end section of spring claw 12, i.e., a larger dimension A2, the deformation space of spring claw 12 will be insufficient, i.e., the dimension F will be insufficient. During actual assembly, the insertion of the crimp sleeve 3 will push spring claw 12 outward, i.e., spring claw 12 will deform outward, such as... Figure 6As shown, if the space is insufficient, that is, if the size F is too small, the spring claw 12 will directly press against the inner wall of the cover body 11, that is, the size F becomes 0. If the spring claw 12 continues to move outward, it will generate a force opposite to the direction of movement, which will press the pressing sleeve 3, resulting in a relatively large force when the pressing sleeve 3 is installed.

[0060] Embodiment 2 of the connector shield of this utility model:

[0061] This embodiment can further improve the situation where the shield 1 in the above embodiment experiences excessive force when the crimping sleeve 3 is inserted. The difference between the shield 1 in this embodiment and the shield 1 in the above embodiment lies in the length of the spring claw 12. Figure 7 , Figure 8 As shown, the spring claws 12 of the shielding cover 1 are cut into unequal length structures. There are two specifications of spring claws 12, and the overhang lengths of spring claws 12 of different specifications are different. The extension lines of the two sides of the width direction of each spring claw 12 in the same group in the flat state intersect at a point. The distance between the root bending part 13 of each spring claw 12 and this point is the same. The distance between the end bending part 14 and the root bending part 13 of spring claws 12 of different specifications is different.

[0062] The two types of spring claws 12 are of equal quantity and are arranged alternately along the circumference. The longer spring claws are the same size as the spring claws 12 of the shield 1 in the above embodiment, while the shorter spring claws are shorter. The lengths of the end segments of the spring claws 12 are set to be equal, that is, the dimension B1 of the end segment of the first bend on the short spring claw is equal to the dimension B2 of the end segment of the first bend on the long spring claw. This ensures that the contact points of the long spring claws, short spring claws and the crimping sleeve 3 are at different heights, and also ensures that there is sufficient distance between the end of each spring claw 12 and the inner wall of the shield body 11.

[0063] Figure 8 C1 and C2 are the distances between the bent end 14 of the corresponding spring claw 12 and the inner end of the crimping sleeve 3. C1 and C2 are not equal, which ensures that the contact time between the two types of spring claws 12 and the crimping sleeve 3 is also different. This can ensure that the crimping sleeve 3 is subjected to gentle force during the insertion process.

[0064] The above-mentioned cutting method also has certain limitations. Since the spring claws 12 in the same group are of different lengths, in order to meet the size requirements of the spring claws 12, a relatively large part of the material near the center area needs to be removed during forming, resulting in waste. In order to meet the formability requirements, the area of ​​the tail side wall of the corresponding cover body 11 needs to be large enough, which makes the size of the shielding cover 1 larger. The cover body 11 of the shielding cover 1 is fitted outside the inner shell 2 with the contact mounting cavity 21, making the connector larger in size.

[0065] Embodiment 3 of the connector shield of this utility model:

[0066] This embodiment further improves the problem of material waste and large size of the shield 1 during the forming process of the shield 1 in the above embodiment 2. The shield 1 in this embodiment differs from the shield 1 in the above embodiment in the cutting form of the spring claw 12, such as... Figure 9 , Figure 10 , Figure 11 As shown, there are long and short spring claws in the same group of spring claws 12. The overhang length of the long spring claw is greater than that of the short spring claw. The spring claws 12 adjacent to any short spring claw in the same group are long spring claws. The intersection of the extension lines of the adjacent side edges of the long spring claws on both sides is located on the side of the short spring claw between the adjacent long spring claws near the center of the area enclosed by all the spring claws 12 in the same group. The root bending part 13 of each spring claw 12 in the same group is the same distance from the center of the area enclosed by all the spring claws 12 in the same group. The area enclosed by the extended lines of the adjacent sides of the long spring claws on both sides is used to form the short spring claw between them. By intersecting the extended lines of the two on the center side, the material area required to form the short spring claw is reduced while the material area required to form the long spring claw is increased. Conversely, the material of the short spring claw that originally needed to be removed near the center area is used as part of the material required to form the long spring claw. While ensuring the width and length of the end section of the long spring claw, it is brought closer to the center, making full use of the material and reducing waste. In this way, while meeting the length requirements of the long and short spring claws, the distance between the root bending part 13 of the spring claw 12 and the center can be shortened. While ensuring that the root bending part 13 of each spring claw 12 in the same group is the same distance from the center, the material area required to form the spring claw 12 is reduced, thereby reducing the size of the shield 1. The shield 1 body 11 is fitted outside the inner shell 2 with the contact mounting cavity 21, thereby reducing the volume of the connector.

[0067] The intersection of the extended sides of the width direction of any long spring claw is located on the side away from the center of the area enclosed by all the spring claws 12 in the same group. The intersection of the extended sides of the width direction of any short spring claw is located on the side closer to the center of the area enclosed by all the spring claws 12 in the same group. Before the spring claw 12 is bent, the slit 15 between two adjacent spring claws 12 gradually narrows from the root to the end of the spring claw 12. The minimum width of the slit 15 meets the punching requirements of the tool. The width of the bent portion 13 at the root of the long spring claw is greater than that of the bent portion 13 at the root of the short spring claw.

[0068] The short spring claws in the same group of spring claws 12 have at least two specifications, and the lengths of the short spring claws of different specifications are different. The long spring claws on both sides of any short spring claw of any specification are of the same specification. In this embodiment, there are two specifications of short spring claws. Any two spring claws in the same group of spring claws 12 are symmetrically arranged on both sides of the center of the area enclosed by each spring claw 12. That is, the spring claws 12 of the same specification are symmetrical about the center, forming contact points at different positions in the axial direction of the crimping sleeve 3, and the force is uniform when the crimping sleeve 3 is inserted.

[0069] The length of the end segment of the long spring claw is D3, the length of the end segment of one type of short spring claw is D1, and the length of the end segment of another type of short spring claw is D2. The ends of each spring claw 12 are rounded, which ensures that the length of the end segment meets the requirements while making full use of the material in the central area.

[0070] The number of spring claws 12 in the same group is unlimited, as are the individual numbers and lengths of different types of spring claws 12, and can be designed according to requirements. The arrangement of the spring claws 12 in this shielding cover 1 ensures that the reaction force is gentle when the crimping sleeve 3 is installed, while making full use of the material, reducing waste, and ensuring that short spring claws reach sufficient length within feasible limits.

[0071] Embodiments of the connector of this utility model:

[0072] The connector includes an inner housing, contacts installed in the inner housing, a shielding cover fitted outside the inner housing, and a crimping sleeve for crimping the cable shielding layer and contacting the shielding cover. The shielding cover is the same as the shielding cover of the connector described in any of the above embodiments, and will not be described again here.

[0073] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shielding cover for a connector, characterized in that, The shield (1) is provided with at least one wire hole. The opening of the wire hole is provided with a set of spring claws (12) for engaging with the crimping sleeve (3). Each spring claw is spaced around the center line of the wire hole in the circumferential direction. The spring claw extends along the center line of the wire hole and has a contact part for elastically pressing against the crimping sleeve (3). The contact part of each spring claw (12) is located on at least two circumferences in the direction of the center line of the wire hole so that it can contact different positions in the axial direction of the crimping sleeve when the crimping sleeve (3) is installed.

2. The shielding cover of the connector according to claim 1, characterized in that, The abutting parts are located on different circumferences of the spring claws (12) with different specifications. The abutting part is the end bend (14) of the spring claw (12). The end bend (14) is used to bend the end section of the spring claw (12) relative to its main body section. The root bend (13) of the spring claw (12) is connected to the shield body (11) of the shield cover (1). The root bend (13) is used to bend the main body section of the spring claw (12) relative to the shield body (11). The root bend (13) of each spring claw (12) is the same distance from the center of the wire hole. The distance from the end bend (14) to the root bend (13) of spring claws (12) with different specifications is different.

3. The shielding cover of the connector according to claim 2, characterized in that, The spring claws (12) in the same group are arranged symmetrically on the center when flattened. The amount of material required for forming each spring claw (12) is the same. The position of the end bending part (14) of spring claws (12) of different specifications is different in the overhang direction of spring claw (12).

4. The shielding cover of the connector according to claim 2, characterized in that, Different specifications of spring claws (12) have different overhang lengths. When the spring claws (12) in the same group are unfolded, the extension lines of the two sides of the width direction intersect at one point.

5. The shielding cover of the connector according to claim 2, characterized in that, Among the different specifications of spring claws (12) in the same group, there are long spring claws (12) and short spring claws (12). The overhang length of the long spring claw (12) is greater than that of the short spring claw (12). The spring claws (12) on both sides of any short spring claw (12) in the same group are long spring claws (12). The intersection of the side extension lines of the adjacent long spring claws (12) in the width direction is located on the side of the short spring claw (12) between the adjacent long spring claws (12) near the center of the area enclosed by the spring claws (12) in the same group.

6. The shielding cover of the connector according to claim 5, characterized in that, The intersection of the two sides of the width direction of any long spring claw (12) is located on the side away from the long spring claw (12) of the center of the area enclosed by the spring claws (12) of the same group. The intersection of the two sides of the width direction of any short spring claw (12) is located on the side closer to the short spring claw (12) of the center of the area enclosed by the spring claws (12) of the same group. When the spring claw (12) is flattened, the slit (15) between two adjacent spring claws (12) gradually narrows from the root to the end of the spring claw (12).

7. The shielding cover of the connector according to claim 5, characterized in that, The short pawls (12) in the same group of pawls (12) have at least two specifications. The lengths of the short pawls (12) of different specifications are different. The long pawls (12) on the adjacent sides of any short pawl (12) of any specification are the same.

8. The shielding cover of the connector according to any one of claims 1-7, characterized in that, The end of the pawl (12) is flat or round.

9. The shielding cover of the connector according to any one of claims 1-7, characterized in that, Each spring claw (12) used to contact the same circumference on the crimp sleeve (3) is symmetrically arranged about the center of the wire hole.

10. A connector, characterized in that, It includes an inner housing (2), a contact installed in the inner housing (2), a shield (1) sleeved outside the inner housing (2), and a crimping sleeve (3) for crimping the cable shielding layer and contacting the shield, wherein the shield (1) is the shield of the connector described in any one of claims 1-9.

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