A fastening structure of a connector and a connector

Abstract

The application relates to the technical field of locking and fixing structures of connectors, in particular to a fastening structure of a connector and the connector. The fastening structure of the connector comprises a fixing shell and a mounting shell, the fixing shell is provided with a fixing cavity, the mounting shell is provided with a mounting cavity, the cavity openings of the fixing cavity and the mounting cavity are butted to form a limiting mounting cavity, a spring and a fastening screw are mounted in the limiting mounting cavity, the cavity bottom of the fixing cavity is provided with a top avoiding opening for avoiding the part between the end head of the fastening screw and a shoulder, the cavity bottom of the mounting cavity is provided with a bottom avoiding opening for avoiding a screw rod section, one end of the spring is abutted against the cavity wall of the limiting mounting cavity, the other end of the spring is pressed on the shoulder so that the shoulder is pressed on the cavity wall of the limiting mounting cavity when the screw rod section is not connected with a connecting hole of a matched component. The limiting mounting cavity is formed by the existing two-part shell of the connector, separate mold manufacturing parts can be avoided, and the production and manufacturing cost of the connector is reduced.

Description

Technical Field

[0001] This invention relates to the field of locking and fixing structures for connectors, and more specifically to a fastening structure for a connector and a connector. Background Technology

[0002] Fastening screws are often used to lock and fix connectors to corresponding components, and are widely used in various connectors. They mainly serve to lock and fix the connector to ensure reliable contact between the connector and the adapter component.

[0003] A cable connector disclosed in Chinese invention patent application CN118431808A includes an insulating body and cable assemblies installed within the insulating body. The cable assembly includes a terminal module, a cable connected to the terminal module, and a shielding component disposed on one side of the terminal module. The shielding component is electrically connected to the grounding terminal of the terminal module, forming the shielding structure of the cable assembly. The signal terminals of the terminal module are connected to the core wires of the cable. A conductive shell is provided on the upper side of the insulating body. The rear side of the conductive shell has a clearance opening to allow cable to pass through. The cable extension direction is defined as the front-to-back direction. The conductive shell encloses the insulating body and each cable assembly from four directions: front, top, left, and right, with the rear side being the cable exit direction. The conductive shell is electrically connected to the shielding structure of each cable assembly. A common ground terminal is installed within the insulating body, electrically connected to the conductive shell. The common ground terminal has a connecting pin for electrically connecting to the ground layer of a PCB board. The PCB board constitutes components that are adapted to connect with this connector. The conductive outer shell of the connector forms the fixed housing, while the insulating body forms the mounting housing for installing the terminal module. The mounting housing and the fixed housing are fixedly connected. The conductive outer shell has screw holes, and the PCB board has corresponding threaded holes, allowing the connector to be securely fixed to the PCB board using fastening screws.

[0004] Typically, fastening screws are delivered to users in two main ways relative to connectors: either they are delivered separately as individual parts (as is the case with the connector mentioned above), or they are pre-installed on the connector and delivered with the product. If the fastening screws are delivered separately, they need to be packaged separately, and users must remove them individually and locate their corresponding installation positions for assembly. This increases the screw installation process for the user, makes it easy to misplace the screws, and causes them to fall or be lost during disassembly. Pre-installing the screws on the connector and delivering them with the product eliminates these problems, providing greater convenience for the user.

[0005] For structures where screws are pre-installed on the connector, a design is needed to prevent the screws from falling out and to ensure they remain stably in their initial position. Such a structure can be referenced. Figure 1 , Figure 1 The connector in this example has a similar main structure to the aforementioned cable connector, and is used to connect the circuit board 200. The difference lies in the screw mounting structure. Figure 1 The connector has a screw mounting cavity 103 on its conductive housing 102. The screw mounting cavity 103 has a top opening and a bottom bottom. The fastening screw 101 includes a head, a threaded section, and a shoulder located between the threaded section and the head. The bottom of the screw mounting cavity 103 has a through hole for the threaded section of the fastening screw 101 to pass through. A spring 104 is installed inside the screw mounting cavity. The spring 104 is inserted from the opening, and its bottom end presses against the bottom of the screw mounting cavity 103. The fastening screw 101 is inserted from the opening, with its threaded section passing through the spring and extending out from the through hole at the bottom of the cavity. The shoulder of the fastening screw 101 presses against the top of the spring 104. A cover 105 is installed at the opening of the mounting cavity 103. The cover 105 has a side opening on the upper part of the shoulder to avoid the fastening screw 101. The cover 105 can be inserted from the radial side of the screw and then snapped downwards into the opening of the screw mounting cavity of the conductive housing 102. The cover 105 has a claw that engages with the slot on the conductive housing 102 to form a snap-fit, maintaining the position of the cover 105. The cover 105 blocks the shoulder of the fastening screw 101, compressing the spring 104. The elastic force of the spring 104 makes the shoulder press against the cover 105, keeping the fastening screw 101 stable and preventing it from coming out, forming a non-removable screw structure. A nut 201 is provided on the corresponding circuit board 200. When locking the connector to the circuit board 200, align the fastening screw 101 with the nut 201, press and tighten the screw to connect the screw and nut together.

[0006] The fastening screw mounting structure of the connector described above uses its fixed outer shell and the snap cover to form a limiting mounting cavity for mounting springs and screws, thereby maintaining the screw position. However, for this structure, the snap cover part needs to be injection molded separately, which makes the connector manufacturing cost high. Summary of the Invention

[0007] The purpose of this invention is to provide a fastening structure for a connector, so as to solve the problem that the current connectors use their fixed shell to form a limiting installation cavity for mounting springs and fastening screws to achieve pre-installation of fastening screws. This structure requires the fastening cover to be injection molded separately, which leads to the high manufacturing cost of the connector. The purpose of this invention is also to provide a connector to solve the above problems.

[0008] The technical solution of the fastening structure of the connector of the present invention is as follows: A fastening structure for a connector includes a fixed housing and a mounting housing for mounting a terminal module and fixed to the fixed housing. The fixed housing has a fixed cavity, and the mounting housing has a mounting cavity. The fixed cavity and the mounting cavity mate to form a limiting mounting cavity. The limiting mounting cavity is fitted with a spring and a fastening screw. The fastening screw includes an end, a screw section, and a shoulder located between the end and the screw section. The bottom of the fixed cavity has a top clearance opening to avoid the portion between the end of the fastening screw and the shoulder. The fixed cavity has a mounting opening for the shoulder to be inserted. The bottom of the mounting cavity has a bottom clearance opening to avoid the screw section. One end of the spring abuts against the cavity wall of the limiting mounting cavity, and the other end presses against the shoulder to press the shoulder against the cavity wall of the limiting mounting cavity when the screw section is not connected to the connection hole of the adapter component.

[0009] Beneficial Effects: The connector of this invention innovatively utilizes the two housing parts of the connector as the basis for setting the pre-assembled structure of the fastening screw. Cavities are provided on both the fixed housing and the mounting housing. During installation, the fastening screw can first be inserted into the fixed cavity of the fixed housing. The shoulder of the fastening screw can be inserted through the mounting opening of the fixed cavity. The top clearance opening of the fixed cavity can accommodate the portion between the shoulder and the end of the fastening screw, allowing the end of the fastening screw to extend out of the fixed cavity. The spring can first be inserted into the mounting cavity. Then, when the mounting housing and the fixed housing of the connector are fixed together, the screw section of the fastening screw passes through the spring in the mounting cavity. The bottom clearance opening at the bottom of the mounting cavity allows the screw section of the fastening screw to extend out. After the mounting housing and the fixed housing of the connector are fixed, the openings of the fixed cavity and the mounting cavity align to form a limiting mounting cavity. In this way, the spring and the fastening screw... The spring is installed in the limiting mounting cavity, with one end abutting against the cavity wall and the other end pressing against the shoulder of the fastening screw. This causes the shoulder of the fastening screw to press against the cavity wall, applying a spring force to the fastening screw and maintaining its position. The fastening screw will not come out naturally. When the connector is connected to the matching component, the connector's terminal module forms a conductive connection with the corresponding component. The bottom part of the mounting housing forming the mounting recess abuts against the surface of the matching component. The fastening screw corresponds to the connection hole of the matching component. By pressing and tightening the fastening screw, the spring is compressed, causing the screw section of the fastening screw to connect into the connection hole of the matching component, thus locking and fixing the connector and the matching component. This fastening screw installation structure utilizes the existing two-part housing of the connector to form the limiting mounting cavity, avoiding the need for separate mold manufacturing of parts and helping to reduce the production cost of the connector.

[0010] Furthermore, the shoulder is formed by a retaining ring, and the portion of the fastening screw located between the screw section and the end is provided with a retaining ring groove, and the retaining ring is installed in the retaining ring groove.

[0011] Furthermore, the side wall of the fixing cavity is provided with a side opening for installing the retaining ring into the retaining ring slot.

[0012] Furthermore, at least one of the top clearance and the bottom clearance forms a guide engagement with the fastening screw in its axial direction.

[0013] Furthermore, the mounting housing is provided with a positioning protrusion for inserting into the positioning mating hole on the adapter component. The positioning protrusion has a central hole that communicates with the bottom clearance opening to allow the screw section to extend out.

[0014] Furthermore, in its natural state, the end of the screw section does not protrude beyond the mounting housing.

[0015] Furthermore, the mounting housing and the fixed housing are docked and fixed, and the mounting housing and the fixed housing have mating surfaces that meet. The openings of the fixed cavity and the mounting cavity are located on the corresponding mating surfaces.

[0016] The technical solution of the connector of the present invention is as follows: A connector includes a terminal module and a fastening structure for the connector. The fastening structure includes a fixed housing and a mounting housing for mounting the terminal module and fixed to the fixed housing. The fixed housing has a fixed cavity, and the mounting housing has a mounting cavity. The fixed cavity and the mounting cavity mate to form a limiting mounting cavity. The limiting mounting cavity is fitted with a spring and a fastening screw. The fastening screw includes an end, a screw section, and a shoulder located between the end and the screw section. The bottom of the fixed cavity has a top clearance opening to avoid the portion between the end of the fastening screw and the shoulder. The fixed cavity has a mounting opening for the shoulder to be inserted. The bottom of the mounting cavity has a bottom clearance opening to avoid the screw section. One end of the spring abuts against the cavity wall of the limiting mounting cavity, and the other end presses against the shoulder to press the shoulder against the cavity wall of the limiting mounting cavity when the screw section is not connected to the connection hole of the adapter component.

[0017] Beneficial Effects: The connector of this invention innovatively utilizes the two housing parts of the connector as the basis for setting the pre-assembled structure of the fastening screw. Cavities are provided on both the fixed housing and the mounting housing. During installation, the fastening screw can first be inserted into the fixed cavity of the fixed housing. The shoulder of the fastening screw can be inserted through the mounting opening of the fixed cavity. The top clearance opening of the fixed cavity can accommodate the portion between the shoulder and the end of the fastening screw, allowing the end of the fastening screw to extend out of the fixed cavity. The spring can first be inserted into the mounting cavity. Then, when the mounting housing and the fixed housing of the connector are fixed together, the screw section of the fastening screw passes through the spring in the mounting cavity. The bottom clearance opening at the bottom of the mounting cavity allows the screw section of the fastening screw to extend out. After the mounting housing and the fixed housing of the connector are fixed, the openings of the fixed cavity and the mounting cavity align to form a limiting mounting cavity. In this way, the spring and the fastening screw... The spring is installed in the limiting mounting cavity, with one end abutting against the cavity wall and the other end pressing against the shoulder of the fastening screw. This causes the shoulder of the fastening screw to press against the cavity wall, applying a spring force to the fastening screw and maintaining its position. The fastening screw will not come out naturally. When the connector is connected to the matching component, the connector's terminal module forms a conductive connection with the corresponding component. The bottom part of the mounting housing forming the mounting recess abuts against the surface of the matching component. The fastening screw corresponds to the connection hole of the matching component. By pressing and tightening the fastening screw, the spring is compressed, causing the screw section of the fastening screw to connect into the connection hole of the matching component, thus locking and fixing the connector and the matching component. This fastening screw installation structure utilizes the existing two-part housing of the connector to form the limiting mounting cavity, avoiding the need for separate mold manufacturing of parts and helping to reduce the production cost of the connector.

[0018] Furthermore, the shoulder is formed by a retaining ring, and the portion of the fastening screw located between the screw section and the end is provided with a retaining ring groove, and the retaining ring is installed in the retaining ring groove.

[0019] Furthermore, the side wall of the fixing cavity is provided with a side opening for installing the retaining ring into the retaining ring slot.

[0020] Furthermore, at least one of the top clearance and the bottom clearance forms a guide engagement with the fastening screw in its axial direction.

[0021] Furthermore, the mounting housing is provided with a positioning protrusion for inserting into the positioning mating hole on the adapter component. The positioning protrusion has a central hole that communicates with the bottom clearance opening to allow the screw section to extend out.

[0022] Furthermore, in its natural state, the end of the screw section does not protrude beyond the mounting housing.

[0023] Furthermore, the mounting housing and the fixed housing are docked and fixed, and the mounting housing and the fixed housing have mating surfaces that meet. The openings of the fixed cavity and the mounting cavity are located on the corresponding mating surfaces.

[0024] Furthermore, the connector's mounting housing is a conductive housing, and the shielding structure of each terminal module is electrically connected to the mounting housing.

[0025] Furthermore, the mounting housing is located at the connection end of the connector for connecting with the adapter components. The terminal module is connected to a cable. The fixing housing of the connector has a cable harness structure for fixing the cable. Both the fixing housing and the mounting housing are conductive housings, and a conductive rubber ring is provided between the fixing housing and the mounting housing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the fastening screw mounting structure of the connector described in the background section; Figure 2 This is a schematic diagram of the structure of an embodiment of the connector of the present invention; Figure 3 for Figure 2 A cross-sectional view of the connector in the diagram; Figure 4 for Figure 2 A schematic diagram of the cable assembly in the diagram; Figure 5 for Figure 2 A schematic diagram of the fastening screw installation structure of the connector in the diagram.

[0027] In the diagram: 101, fastening screw; 1011, end; 1012, retaining ring; 1013, screw section; 102, conductive housing; 103, screw mounting cavity; 104, spring; 105, cover; 200, circuit board; 201, nut; 202, positioning hole; 1, fixed housing; 2, mounting housing; 11, fixing ear; 111, side opening; 112, fixing recess; 21, mounting ear; 211, mounting recess; 22, positioning protrusion; 3, fixing connecting screw; 4, conductive rubber ring; 5, conductive strip; 6, terminal module; 61, insulator; 62, metal shielding sheet; 621, shielding contact; 63, signal terminal; 64, grounding terminal; 7, wire harness; 8, cable. Detailed Implementation

[0028] The basic concept of this invention is to use the two existing shell parts of the connector to form a limiting mounting cavity for mounting springs and fastening screws, which can avoid the need to make parts by opening a mold separately, and help reduce the production cost of the connector.

[0029] The technical solution of the present invention will be described in detail below with reference to specific embodiments.

[0030] Embodiments of the connector of the present invention: like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, for ease of understanding, the main structure of the connector will first be described. The connector in this embodiment is a cable connector, used to connect with a circuit board 200. The circuit board 200 constitutes an adapter component that connects with the connector. The cable connector is used to connect the cable 8 to the circuit board 200. The cable connector includes a mounting housing 2, a fixing housing 1, and various cable assemblies. Each cable assembly includes a terminal module 6 and a cable 8 connected to the terminal module 6. Multiple cable assemblies are arranged side-by-side. The mounting housing 2 has mounting cavities corresponding to each cable assembly. The terminal module 6 is inserted into the mounting cavity. Each cable assembly has a corresponding mounting cavity. The portion of the cable 8 outside the fixing housing 1 is parallel to the circuit board 200, while the portion inside the fixing housing 1 is bent towards the circuit board 200. The portion of the cable 8 inside the housing is angled to the circuit board 200 to accommodate the right-angle cable exit of the cable connector. The fixing housing 1 covers each terminal module 6 and is fixedly connected to the mounting housing 2.

[0031] Terminal module 6 includes an insulator 61 and signal terminals 63 and grounding terminals 64 fixed in the insulator 61. The terminals of the same cable assembly are arranged side-by-side. Signal terminals 63 are arranged in pairs to form differential pairs. Each cable assembly has multiple differential pairs, and grounding terminals 64 are provided on both sides of each differential pair. Two grounding terminals 64 are provided between adjacent differential pairs of the same cable assembly, forming a shield between the differential pairs. One end of the signal terminal 63 is connected to the core wire of the cable 8, and the other end has a contact cantilever extending from the insulator 61. The end of the contact cantilever has a bent structure to elastically abut against the corresponding signal transmission conductor layer of the circuit board 200, thereby achieving signal transmission. One end of the grounding terminal 64 is connected to the shielding layer of the cable 8, and the other end has a cantilever extending from the insulator 61. The cantilever structure of the grounding terminal 64 is consistent with that of the contact cantilever of the signal terminal 63. The cantilever of the grounding terminal 64 is used to elastically abut against the grounding layer conductor of the circuit board 200 to achieve grounding circuit continuity.

[0032] Terminal module 6 is provided with a shielding structure, which includes a metal shielding sheet 62 and a side shielding member fixed on both sides of the insulator 61 in the thickness direction. The thickness direction of the insulator 61 is consistent with the parallel direction of each cable assembly. The metal shielding sheet 62 is in conductive contact with the grounding terminal 64, and the metal shielding sheet 62 is fixedly connected to the side shielding member. The metal shielding sheet 62 and the side shielding member can form a shield between cable assemblies to improve crosstalk between differential pairs of different cable assemblies.

[0033] The end of the cable connector that forms contact and conduction with the circuit board 200 is the connection end. The mounting housing 2 is located at the connection end of the connector. The mounting housing 2 has a mounting end for mounting onto the circuit board 200. The mounting end of the mounting housing 2 is used to form the connection end of the cable connector. To accommodate the cable 8's exit configuration, the terminal module 6 is tilted relative to the circuit board 200. The portion of the cable 8 used to connect to the terminal module 6 is tilted, and the mounting cavity on the corresponding mounting housing 2 is tilted accordingly. The mounting housing 2 has multiple tilted through mounting cavities arranged side by side. The thickness direction of the mounting housing 2 is perpendicular to the circuit board 200. The mounting cavities tilt through both sides of the mounting housing 2's thickness direction. An inner step is provided inside the mounting cavity. The cable assembly is inserted into the mounting cavity from the side of the mounting housing 2 facing away from the circuit board 200. The shielding structure of the terminal module 6 abuts against the inner step to form a limit. The inner step can block the end of the side shielding component of the shielding structure. The contact cantilever of the signal terminal 63 extends into the space on the side of the mounting cavity near the mounting end of the mounting housing 2, located on the inner step. When the mounting housing 2 is attached to the circuit board 200, the end of the contact cantilever can contact the corresponding conductor layer on the circuit board 200.

[0034] The connector has a fastening structure for securing it to a circuit board. This fastening structure includes a fixed housing 1, a mounting housing 2, and mounting screws 101. The mounting housing 2 is flat with mounting cavities arranged side-by-side. The fixed housing 1 is a cover with an inner cavity to enclose the terminal modules 6 and allow the cables 8 to extend from the connector's tail end. The connector's connection end is defined as facing downwards, and the arrangement direction of the cable assemblies is the connector's length direction, which is the left-right direction. Correspondingly, the connector's width direction is the front-back direction. Mounting ears 21 are provided on both the front and rear side walls of the mounting housing 2, with two mounting ears 21 on each side. Fixing ears 11 are provided on both the front and rear side walls of the fixed housing 1, with two fixing ears 11 on each side. The vertical height of the mounting ears 21 is the same as the main body height of the mounting housing 2, while the vertical height of the fixing ears 11 is lower than the main body height of the fixed housing 1. The vertical dimension of the fixing ears 11 is larger than the vertical dimension of the mounting ears 21. The fixing ear 11 corresponds one-to-one with the mounting ear 21 and is pre-installed with a fastening screw 101. The fastening screw 101 is used to lock the connector to the circuit board 200 to maintain reliable contact and conductivity. The end 1011 of the fastening screw 101 can be used to press the fixing housing 1 to ensure reliable locking.

[0035] The fixing ear 11 of the fixed housing 1 is provided with a fixing cavity 112, and the mounting ear 21 of the mounting housing 2 is provided with a mounting cavity 211. Both the fixing cavity 112 and the mounting cavity 211 have an opening and a bottom. The opening of the fixing cavity 112 faces downward and the bottom is located at the top of the fixing ear 11, while the opening of the mounting cavity 211 faces upward and the bottom is located at the bottom of the mounting ear 21. The fixing cavity 112 and the opening of the mounting cavity 211 are joined to form a limiting mounting cavity. The limiting mounting cavity is equipped with a spring 104 and a fastening screw 101. The fastening screw 101 includes an end 1011, a screw section 1013, and a shoulder located between the end 1011 and the screw section 1013. The bottom of the fixing cavity 112 is provided with a top clearance opening to avoid the portion between the end 1011 and the shoulder of the fastening screw 101. The mounting cavity 211 is provided with a mounting port for inserting the shoulder of the fastening screw 101. The bottom of the mounting cavity 211 is provided with a bottom clearance opening to avoid the screw section 1013 of the fastening screw 101. One end of the spring 104 abuts against the cavity wall of the limiting mounting cavity, and the other end presses against the shoulder of the fastening screw 101, so that when the screw section 1013 of the fastening screw 101 is not connected to the connection hole of the adapter component, the shoulder of the fastening screw 101 is pressed against the cavity wall of the limiting mounting cavity.

[0036] The two housing parts of the connector serve as the basis for the pre-installed structure of the fastening screw 101. Cavities are provided on both the fixed housing 1 and the mounting housing 2. During installation, the fastening screw 101 can be first inserted into the fixing cavity 112 of the fixed housing 1. The shoulder of the fastening screw 101 can be inserted through the mounting port of the fixing cavity 112. The top clearance of the fixing cavity 112 can accommodate the portion between the shoulder of the fastening screw 101 and the end 1011, allowing the end 1011 of the fastening screw 101 to extend into the fixed housing. Outside the recess 112, the spring 104 can be first installed into the mounting recess 211. Then, when the mounting housing 2 of the connector is fixed together with the fixed housing 1, the screw section 1013 of the fastening screw 101 passes through the spring 104 inside the mounting recess 211. The screw section 1013 of the fastening screw 101 can extend out using the bottom clearance provided at the bottom of the mounting recess 211. After the mounting housing 2 of the connector is fixed to the fixed housing 1, the fixed recess 112 and the cavity opening of the mounting recess 211 align to form a limiting mounting cavity. The spring 104 and the fastening screw 101 are positioned and mounted in the limiting mounting cavity. One end of the spring 104 abuts against the cavity wall of the limiting mounting cavity, and the other end presses against the shoulder of the fastening screw 101. This causes the shoulder of the fastening screw 101 to press against the cavity wall of the limiting mounting cavity, applying a spring force to the fastening screw 101 to maintain its position. The fastening screw 101 will not come out in its natural state. When the connector is connected to the mating component, the connector's terminal module 6 forms a conductive connection with the corresponding component, and the mounting housing 2 forms a mounting recess. The bottom part of cavity 211 rests against the surface of the adapter component. The fastening screw 101 corresponds to the connection hole of the adapter component. By pressing and turning the fastening screw 101, the spring 104 is compressed, so that the screw section 1013 of the fastening screw 101 is connected to the connection hole of the adapter component, thereby realizing the locking and fixing of the connector and the adapter component. This mounting structure of the fastening screw 101 uses the two existing shells of the connector to form a limiting mounting cavity, which can avoid the separate molding and manufacturing of parts, and helps to reduce the production cost of the connector.

[0037] In this embodiment, a recessed cavity is provided on the ear, which can reduce the size of the connector housing. In other embodiments, if the wall thickness of the fixed housing and the width of the mounting housing are large enough, the ear can be omitted, and the recessed cavity can be formed directly on the main body of the housing.

[0038] The fastening screw 101 has a tightening tool engagement structure on its end 1011. The outer diameter of the end 1011 is larger than the outer diameter of the screw section 1013, while the outer diameter of the portion between the screw section 1013 and the end 1011 is smaller than the outer diameter of the screw section 1013. A retaining ring groove is provided on the portion of the fastening screw 101 located between the screw section 1013 and the end 1011. A retaining ring 1012 is installed in the retaining ring groove, forming a shoulder for the fastening screw 101. The outer diameter of the retaining ring 1012 is larger than the outer diameter of the screw section 1013. The screw section 1013, the end 1011, and the portion between the screw section 1013 and the end 1011 together constitute the main body of the fastening screw 101. The retaining ring 1012 is separate from the main body and can be installed separately, facilitating the installation structure. The fixing cavity 112 is designed as a circular hole structure. The top clearance opening at the bottom of the fixing cavity 112 is formed by a circular through hole, and the inner diameter of the top clearance opening is smaller than the inner diameter of the fixing cavity 112. When installing the fastening screw 101 into the fixing cavity 112, the main body of the fastening screw 101 can be inserted into the fixing cavity 112 from top to bottom, with the screw section 1013 passing through the top clearance opening, and the retaining ring groove on the main body of the fastening screw 101 protruding from the fixing cavity 112. Then, the retaining ring 1012 is snapped on. The structure is simple and easy to install. In other embodiments, a side mounting port can be provided at the location of the fixing cavity. The side mounting port constitutes an installation port and communicates with the fixing cavity and the top clearance port. The opening width of the side mounting port is adapted to the radial dimension of the shoulder and the upper and lower sides of the shoulder of the fastening screw 101. The shoulder and the upper and lower sides of the shoulder of the fastening screw 101 can be avoided so that the fastening screw 101 can be directly installed into the fixing cavity and the top clearance port from one side in the front-back direction. At this time, the shoulder of the fastening screw 101 can be integrally formed with the main body. The fastening screw 101 can be held in position by the mounting cavity and the spring to prevent it from coming out of the side mounting port.

[0039] The side wall of the fixing cavity 112 is provided with a side opening 111 for installing the retaining ring 1012 into the retaining ring slot. The side opening 111 is located at the opening of the fixing cavity 112, allowing the retaining ring 1012 to be exposed when the end 1011 abuts against the fixing housing 1. The side opening 111 faces the front-to-back direction and is perpendicular to the axial direction of the fastening screw 101. The side opening 111 forms an installation port for the shoulder of the fastening screw 101 to be inserted. After the body of the fastening screw 101 is inserted into the fixing cavity 112 from top to bottom, the end 1011 rests on the top surface of the fixing lug 11. At this time, the retaining ring slot can be exposed from the side opening 111, and the retaining ring 1012 can be installed. This ensures the depth of the fixing cavity 112 and makes the distance between the retaining ring 1012 and the end 1011 less than the vertical depth of the fixing cavity 112, facilitating the installation of the retaining ring 1012. In other embodiments, when the end rests on the top surface of the fixing ear, the retaining ring groove can be exposed from the opening of the fixing cavity for retaining ring installation. In other embodiments, the side opening can be located in the middle of the fixing cavity in the vertical direction. In this case, the side opening is a rectangular opening and is separated from the opening of the fixing cavity. The screw body can be moved down a small distance to expose the retaining ring groove, and its size is sufficient to meet the side mounting requirements of the retaining ring.

[0040] The mounting cavity 211 has a circular hole structure, and the bottom clearance opening at the bottom of the mounting cavity 211 has a through hole structure. The inner diameter of the bottom clearance opening is smaller than the inner diameter of the mounting cavity 211. The inner diameter of the mounting cavity 211 is the same as the inner diameter of the fixing cavity 112 and is adapted to the spring 104. The spring 104 is installed in the limiting mounting cavity formed by the mounting cavity 211 and the fixing cavity 112, which can guide the deformation of the spring 104. The spring 104 is sleeved on the fastening screw 101. The inner diameters of the top clearance opening and the bottom clearance opening are adapted to the outer diameter of the screw section 1013. The bottom clearance opening and the fastening screw 101 form a guiding fit in the axial direction of the fastening screw 101, which is beneficial to maintaining the position of the fastening screw 101. In other embodiments, the fastening screw 101 may not be guided, and there may be a relatively large gap between the fastening screw 101 and the inner walls of the top clearance opening and the bottom clearance opening.

[0041] The entire inner wall of the fixed cavity 112 and the entire inner wall of the mounting cavity 211 are both cavity walls of the limiting mounting cavity. The bottom end of the spring 104 presses against the bottom of the mounting cavity 211, and the top end presses the retaining ring 1012 against the bottom of the fixed cavity 112. In this way, in the natural state, the fastening screw 101 is pushed upward by the spring 104, so that the lower end of the fastening screw 101 will not protrude from the end face of the mounting end of the mounting housing 2. The end 1011 is compatible with the height difference between the top surface of the fixed ear 11 and the top surface of the main body of the fixed housing 1, reducing the height dimension of the connector when it is not connected to the circuit board 200.

[0042] The mounting ear 21 has a positioning protrusion 22 at the bottom clearance of the mounting cavity 211 for inserting a positioning mating hole 202 on the adapter component. The positioning protrusion 22 is annular and has a central hole that communicates with the bottom clearance. The inner diameter of the positioning protrusion 22 is the same as the inner diameter of the bottom clearance to allow the screw section 1013 to extend. The circuit board 200 has a positioning mating hole 202, and a nut 201 is provided at the end of the positioning mating hole 202 facing away from the connector. The nut 201 can be pre-installed on the circuit board 200 or soldered in place. The threaded hole of the nut 201 forms a connection hole. When the connector is connected to the circuit board 200, the positioning protrusion 22 is inserted into the positioning mating hole 202 to form a position, facilitating the connection operation. In other embodiments, the positioning protrusion may be omitted.

[0043] The end of the screw section 1013 of the fastening screw 101 does not protrude from the mounting housing 2. The end of the screw section 1013 is the lower end of the fastening screw 101. In its natural state, the lower end of the fastening screw 101 is located in the inner hole of the positioning protrusion 22 and does not protrude, which facilitates the stable placement of the connector. Of course, in other embodiments, the end of the screw section may have a portion protruding from the lower end face of the mounting housing.

[0044] The mounting housing 2 is mated and fixed to the fixed housing 1. The mounting housing 2 and the fixed housing 1 have mating surfaces that are flat. The upper end surface of the mounting housing 2 and the lower end surface of the fixed housing 1 are mating surfaces. After mating, the mounting housing 2 and the fixed housing 1 are fixed by fixing screws 3. The mating surface of the fixed housing 1 has threaded holes, and the mounting housing 2 has countersunk screw holes to accommodate the screw heads of the fixing screws 3, ensuring a flat bottom surface for the connector. The bottom surface of the fixing ear 11 and the top surface of the mounting ear 21 are parts of their respective mating surfaces. The openings of the fixing cavity 112 and the mounting cavity 211 are located on their respective mating surfaces. In other embodiments, the mounting housing and the fixed housing may only mate at the ear, with the other parts of the mounting housing enclosed within the fixed housing. The lower end surface of the fixed housing can rest against the circuit board.

[0045] When the connector is locked to the circuit board 200, press the fastening screw 101 and turn it. The spring 104 is compressed, and the fastening screw 101 and nut 201 are tightened. The housing 1 is pressed by the end 1011, or the mounting housing 2 is pressed by the spring 104 to keep the connector and circuit board 200 connected reliably.

[0046] The mounting housing 2 is a conductive housing. The shielding structure of each terminal module 6 is electrically connected to the mounting housing 2. The shielding structure is provided with a shielding contact part 621. After the terminal module 6 is installed on the mounting housing 2, it can form contact and conduction with the inner wall of the mounting cavity of the mounting housing 2 through the shielding contact part 621 to achieve common ground and improve the shielding effect.

[0047] The mounting housing 2 is located at the connection end of the connector for connecting to the adapter components. The terminal module 6 is connected to the cable 8. The fixed housing 1 has a cable harness structure to fix the cable 8. Both the fixed housing 1 and the mounting housing 2 are conductive housings. The fixed housing 1 is made of metal, while the mounting housing 2 can be made of conductive plastic. A conductive rubber ring 4 is provided between the fixed housing 1 and the mounting housing 2. The conductive rubber ring 4 is placed between the mating surfaces of the fixed housing 1 and the mounting housing 2 to form a shielded conduction, while also forming a seal.

[0048] Since the mounting housing 2 is set as a conductor, the shielding structure of the cable assembly is provided with a shielding contact portion 621 that makes conductive contact with the mounting housing 2 so that the mounting cavity of the mounting housing 2 forms a shielding cavity. Thus, the mounting cavity of the mounting housing 2 forms a shielding cavity to shield the differential pair. The contact cantilever of the signal terminal 63 is located inside the shielding cavity, forming a surrounding shield for the contact cantilever. The shielding effect is good and it is beneficial to improve the transmission rate of the cable connector.

[0049] The cable connector's mounting housing 1 has a vertically oriented fixed end and a wiring end. The wiring end has a wire harness structure for securing each cable 8, which is a wire harness frame 7, ensuring that each cable 8 exits parallel to the circuit board 200. The fixed end of the mounting housing 1 is fixedly connected to the mounting housing 2. The fixed end of the mounting housing 1 is snapped onto the end face of the mounting housing 2 facing away from the mounting end. The fixed housing 1 is located on the side of the mounting housing 2 furthest from the mounting end, and the fixed housing 1 and the mounting housing 2 have mating surfaces, namely the end face of the fixed end of the fixed housing 1 and the end face of the mounting housing 2 facing away from the mounting end. Simultaneously, a conductive strip 5 is provided on the end face of the mounting end of the mounting housing 2. The conductive strip 5 is elastic and can contact the grounding conductor on the circuit board 200, thus establishing a grounding circuit between the mounting housing 2 and the circuit board 200. This contact can be maintained by tightening the fastening screw 101.

[0050] The retaining ring 1012 and spring 104 of the fastening screw 101 are standard parts. The main body of the fastening screw 101 can be manufactured by modifying standard parts or by creating new molds, and the process is mature. This structure can ensure that the screw does not come out after being pre-installed on the product, and it can also keep the screw in its initial relatively fixed position in its natural state. When removing or unloading, the screw can naturally return to its initial position. The screw is under axial force, which is not easy to skew, and it is convenient for installation and removal. Furthermore, standard parts are used as much as possible, the parts are easy to process and assemble, the cost is low, and it has strong scalability and low parts cost.

[0051] Embodiments of the fastening structure of the connector of the present invention: The fastening structure of the connector in this embodiment is the same as that of the connector in the above-described embodiment, and will not be described again here.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A fastening structure for a connector, characterized in that, The device includes a fixed housing (1) and a mounting housing (2) for mounting a terminal module (6) and fixed to the fixed housing. The fixed housing has a fixed cavity (112), and the mounting housing has a mounting cavity (211). The fixed cavity and the mounting cavity are connected to form a limiting mounting cavity. The limiting mounting cavity is equipped with a spring (104) and a fastening screw (101). The fastening screw includes an end (1011), a screw section (1013), and a shoulder located between the end and the screw section. The bottom of the fixed cavity has a top clearance opening to avoid the portion between the end of the fastening screw and the shoulder. The fixed cavity has a mounting opening for the shoulder to be inserted. The bottom of the mounting cavity has a bottom clearance opening to avoid the screw section. One end of the spring abuts against the cavity wall of the limiting mounting cavity, and the other end presses against the shoulder so that the shoulder is pressed against the cavity wall of the limiting mounting cavity when the screw section is not connected to the connection hole of the adapter component.

2. The fastening structure of the connector according to claim 1, characterized in that, The shoulder is formed by the retaining ring (1012). The portion of the fastening screw (101) located between the screw section (1013) and the end (1011) is provided with a retaining ring (1012) slot, and the retaining ring (1012) is installed in the retaining ring (1012) slot.

3. The fastening structure of the connector according to claim 2, characterized in that, The side wall of the fixed cavity (112) is provided with a side opening (111) for installing the retaining ring (1012) into the retaining ring (1012) slot.

4. The fastening structure of the connector according to claim 1, 2, or 3, characterized in that, At least one of the top clearance and the bottom clearance forms a guide engagement with the fastening screw (101) in its axial direction.

5. The fastening structure of the connector according to claim 1, 2, or 3, characterized in that, The mounting housing (2) is provided with a positioning protrusion (22) for inserting a positioning mating hole (202) on the adapter component. The positioning protrusion (22) is provided with a central hole and the central hole communicates with the bottom clearance opening so that the screw section (1013) can extend out.

6. The fastening structure of the connector according to claim 1, 2, or 3, characterized in that, In its natural state, the end of the screw section (1013) of the fastening screw (101) does not protrude from the mounting housing (2).

7. The fastening structure of the connector according to claim 1, 2, or 3, characterized in that, The mounting housing (2) is fixed to the fixed housing (1). The mounting housing (2) and the fixed housing (1) have mating surfaces that are in contact with each other. The opening of the fixed cavity (112) and the opening of the mounting cavity (211) are located on the corresponding mating surfaces.

8. A connector, characterized in that, It includes a terminal module (6) and a fastening structure for the connector as described in any one of claims 1-7.

9. The connector according to claim 8, characterized in that, The mounting housing (2) of the connector is a conductive housing, and the shielding structure of each terminal module (6) is electrically connected to the mounting housing (2).

10. The connector according to claim 9, characterized in that, The mounting housing (2) is located at the connection end of the connector for connecting with the adapter components. The terminal module (6) is connected to the cable (8). The fixing housing (1) of the connector is provided with a cable bundle structure for fixing the cable (8). Both the fixing housing (1) and the mounting housing (2) are conductive housings. A conductive rubber ring (4) is provided between the fixing housing (1) and the mounting housing (2).

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